| JDwhiteWRX | 03-14-2012 05:39 AM |
Ok made some progress today, I was thinking I was going to drop about 6kg with the rear spec c doors but when I weighed them after doing the trimming and gutting they were only 5kg lighter. So the gutted spec c door was 19kg and after gutting it was down to 13kg.
So I removed my stock rear door and it was a whopping 22kg, so thats a 9kg saving with just one door :) looks like spec c rear doors are 3kg lighter than stock.
Here are some weights from the spec c rear door:
Intrusion bar 1.5kg
Glass alone 2.8kg
Complete door 19kg
material chopped out and removed 6kg
Once gutted I made brackets to hold the window in position, these took a bit of fiddling to get the window to sit tight on the seal with the door shut. I guessed the position first before mounting it on the car and then made adjustments once they were on.
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010054.jpg[/IMG]
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010055.jpg[/IMG]
I used my old trunk scuff plate to make covers were the window winders were. I also put some duct tape over the back of the speaker mesh to keep the noise down.
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010049-3.jpg[/IMG]
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010069.jpg[/IMG]
The colour matches perfect
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010065.jpg[/IMG]
So JDM :lol:
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010067.jpg[/IMG]
So I removed my stock rear door and it was a whopping 22kg, so thats a 9kg saving with just one door :) looks like spec c rear doors are 3kg lighter than stock.
Here are some weights from the spec c rear door:
Intrusion bar 1.5kg
Glass alone 2.8kg
Complete door 19kg
material chopped out and removed 6kg
Once gutted I made brackets to hold the window in position, these took a bit of fiddling to get the window to sit tight on the seal with the door shut. I guessed the position first before mounting it on the car and then made adjustments once they were on.
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010054.jpg[/IMG]
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010055.jpg[/IMG]
I used my old trunk scuff plate to make covers were the window winders were. I also put some duct tape over the back of the speaker mesh to keep the noise down.
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010049-3.jpg[/IMG]
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010069.jpg[/IMG]
The colour matches perfect
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010065.jpg[/IMG]
So JDM :lol:
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010067.jpg[/IMG]
| 68Cadillac | 03-14-2012 01:54 PM |
[quote=JDwhiteWRX;36625370]so thats a 9kg saving with just one door[/quote]
Nice.
Nice.
| JDwhiteWRX | 03-15-2012 04:29 AM |
Got the front door on today, I didn't remove anything except the wiring which I am not even sure why there was any considering everything is manual.
The front door was around 4kg lighter than my stock wrx door, the spec c mirrors are 80g lighter than my wrx mirror. I still need to swap in my door handle without a key barrel for added savings.
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010079-2.jpg[/IMG]
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010081-1.jpg[/IMG]
The front door was around 4kg lighter than my stock wrx door, the spec c mirrors are 80g lighter than my wrx mirror. I still need to swap in my door handle without a key barrel for added savings.
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010079-2.jpg[/IMG]
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010081-1.jpg[/IMG]
| gtasti | 03-15-2012 05:08 PM |
no more power locks how can u live like that :D
| yebokmj | 03-15-2012 08:33 PM |
Light weight means nothing in your car to steal :P
| DamnThatRevLimiter | 03-16-2012 01:15 PM |
[quote=JDwhiteWRX;36634363]Got the front door on today, I didn't remove anything except the wiring which I am not even sure why there was any considering everything is manual.
The front door was around 4kg lighter than my stock wrx door, the spec c mirrors are 920g lighter than my wrx mirror. I still need to swap in my door handle without a key barrel for added savings.
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010079-2.jpg[/IMG]
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010081-1.jpg[/IMG][/quote]
Nice job , you said the front dorr was 4kg lighter than stock, what was the stock weight for reference?
The front door was around 4kg lighter than my stock wrx door, the spec c mirrors are 920g lighter than my wrx mirror. I still need to swap in my door handle without a key barrel for added savings.
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010079-2.jpg[/IMG]
[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/P1010081-1.jpg[/IMG][/quote]
Nice job , you said the front dorr was 4kg lighter than stock, what was the stock weight for reference?
| bue car | 03-16-2012 01:23 PM |
haha i always think how many jdm lovers are cringing at the thought you got a rear door and just went to town cutting it :p
| JDwhiteWRX | 03-17-2012 04:31 AM |
[quote=DamnThatRevLimiter;36646131]Nice job , you said the front dorr was 4kg lighter than stock, what was the stock weight for reference?[/quote]
stock door is 27.5kg including trim and mirror, no speakers.
stock door is 27.5kg including trim and mirror, no speakers.
| JDwhiteWRX | 03-25-2012 03:31 AM |
I finally finished putting all four spec c doors on the car now, the total weight saving was around 27kg (59lbs).
All the doors went on easy except the drivers door which I did last. I swapped my original door handle into the spec c door so my key would work in the lock but there was a sensor on the back of the lock which was wired into the harness. Once the door was on the car would not start and I had no power to the stereo.
Turns out the factory immobiliser needs that sensor connected up to run but I was able to earth the correct pin down behind the kick panel and bypass it with the help of a friend reading me the circuit diagram over the phone, so the car is running again.
I need to get this car weighed again soon, my new goal is a sub 1200kg GD.
All the doors went on easy except the drivers door which I did last. I swapped my original door handle into the spec c door so my key would work in the lock but there was a sensor on the back of the lock which was wired into the harness. Once the door was on the car would not start and I had no power to the stereo.
Turns out the factory immobiliser needs that sensor connected up to run but I was able to earth the correct pin down behind the kick panel and bypass it with the help of a friend reading me the circuit diagram over the phone, so the car is running again.
I need to get this car weighed again soon, my new goal is a sub 1200kg GD.
| u2_m4r1n3 | 03-25-2012 01:39 PM |
Nice. Good job, that's pretty awesome.
I think you can get down there, just going to take some more work ;) use lexan on all the rear windows, cf roof... Cf seats... Etc, etc :D
I think you can get down there, just going to take some more work ;) use lexan on all the rear windows, cf roof... Cf seats... Etc, etc :D
| JDwhiteWRX | 04-03-2012 06:53 PM |
I got the car weighed yesterday, its now at 1272kg (2804 lbs), not as light as I was hoping but still a good 60kg lighter than the last time I weighed about a year ago.
| Splinter | 04-08-2012 02:13 AM |
[IMG]http://a3.sphotos.ak.fbcdn.net/hphotos-ak-ash3/s720x720/547934_10150729358319609_511244608_8989961_1915682287_n.jpg[/IMG]
I'll weigh it tomorrow :banana:
I'll weigh it tomorrow :banana:
| gtasti | 04-08-2012 10:23 AM |
thats a nice mani
| bue car | 04-08-2012 12:27 PM |
very nice
| NICO TURBINE | 04-08-2012 12:50 PM |
910KG 2002LB to start with ! end product a 2300lb 500whp 94pump gas 600whp race gas Monster :devil:
[img]http://farm6.staticflickr.com/5312/7057276043_3b139e0562_b.jpg[/img]
[img]http://farm6.staticflickr.com/5312/7057276043_3b139e0562_b.jpg[/img]
| XanRules | 04-08-2012 01:26 PM |
[quote="NICO TURBINE"]2002LB to start with ! end product a 2300lb
[/quote]
Why are you adding 298lbs?
[/quote]
Why are you adding 298lbs?
| Psychoreo | 04-08-2012 01:27 PM |
[quote="XanRules"]
Why are you adding 298lbs?[/quote]
Six speed and the supporting gizmos for 500whp?
Why are you adding 298lbs?[/quote]
Six speed and the supporting gizmos for 500whp?
| NICO TURBINE | 04-08-2012 03:33 PM |
^ what he siad, ej22t block ver 8 heads full race twin scroll, sti 6mt, 16inch rims, and diff.
| Splinter | 04-08-2012 08:38 PM |
Cool project but how is that weight reduction when you're adding 300lbs...
| u2_m4r1n3 | 04-08-2012 10:49 PM |
I'm sure he's just implying he has a high hp application and is still less weight than most, if not all, cars in this thread.
But I agree... That's not a weight loss post.
But I agree... That's not a weight loss post.
| Hold_Fast | 04-09-2012 06:40 AM |
[quote=Splinter;36827366][IMG]http://a3.sphotos.ak.fbcdn.net/hphotos-ak-ash3/s720x720/547934_10150729358319609_511244608_8989961_1915682287_n.jpg[/IMG]
I'll weigh it tomorrow :banana:[/quote]
Very nice. Stainless lines with tube nuts and sleeves? If so, where did you get em' from?
I'll weigh it tomorrow :banana:[/quote]
Very nice. Stainless lines with tube nuts and sleeves? If so, where did you get em' from?
| Splinter | 04-09-2012 10:25 AM |
[quote=Hold_Fast;36834236]Very nice. Stainless lines with tube nuts and sleeves? If so, where did you get em' from?[/quote]
Aluminum not stainless, I did my last fuel system with stainless and it was a nightmare doing the bends.
I just bought a roll of tubing and made a flaring tool.
Aluminum not stainless, I did my last fuel system with stainless and it was a nightmare doing the bends.
I just bought a roll of tubing and made a flaring tool.
| Deuce Cam | 04-11-2012 04:57 PM |
[quote=NICO TURBINE;36829189]910KG 2002LB to start with ! end product a 2300lb 500whp 94pump gas 600whp race gas Monster :devil:
[img]http://farm6.staticflickr.com/5312/7057276043_3b139e0562_b.jpg[/img][/quote]
This is just awesome. Enough so that I even left your pic in the quote.
[img]http://farm6.staticflickr.com/5312/7057276043_3b139e0562_b.jpg[/img][/quote]
This is just awesome. Enough so that I even left your pic in the quote.
| Danny5 | 05-23-2012 12:39 PM |
Dang it, I need updates! How is the weight loss coming???
| bue car | 05-23-2012 12:51 PM |
i totally forgot to weigh the gc windows!
| vicious_fishes | 05-25-2012 09:25 AM |
so i removed one of my radiator fans. now the other appears to be permanently on.
iirc this is a side-effect of deleting one yes? i swear i've read about that somewhere...
iirc this is a side-effect of deleting one yes? i swear i've read about that somewhere...
| uv_blue | 05-25-2012 09:54 AM |
added spec c type ra doors they saved 7 pounds each in front and 5 each in rear, thats with spec c type ra mirrors and i swapped my tweter from the sti doors to the new ones, also added spec c type ra aluminum trunk with optional wing and spec c type ra aluminum hood didnt weigh these as i didnt have stock parts to compare against anyway can possibly take them off to weigh thou if its that big of a deal, also im too lazy to post pics so u can see them here [url]http://forums.nasioc.com/forums/showthread.php?t=2345544&highlight=junkyard[/url]
| gtasti | 05-25-2012 09:53 PM |
[quote=uv_blue;37223901]added spec c type ra doors they saved 7 pounds each in front and 5 each in rear, thats with spec c type ra mirrors and i swapped my tweter from the sti doors to the new ones, also added spec c type ra aluminum trunk with optional wing and spec c type ra aluminum hood didnt weigh these as i didnt have stock parts to compare against anyway can possibly take them off to weigh thou if its that big of a deal, also im too lazy to post pics so u can see them here [URL]http://forums.nasioc.com/forums/showthread.php?t=2345544&highlight=junkyard[/URL][/quote]
where the hell did you get ur trunk from i want one ?
where the hell did you get ur trunk from i want one ?
| bue car | 05-26-2012 01:59 PM |
949 is selling a new one on here.. check scic
| gtasti | 05-27-2012 01:15 AM |
that sold long time ago unless he got another one
and he was asking way to much
and he was asking way to much
| bue car | 05-27-2012 11:17 AM |
amazing it sold. :lol:
| vicious_fishes | 06-02-2012 01:18 AM |
so i've got an angle grinder and a spare afternoon.
what can/should i slice off? >:D
what can/should i slice off? >:D
| 68Cadillac | 06-02-2012 03:54 PM |
[quote=vicious_fishes;37280203]so i've got an angle grinder and a spare afternoon.
what can/should i slice off? >:D[/quote]
Front Rail Fangs
[quote=68Cadillac;30503989]
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2416.jpg[/IMG]
Just finished removing the [B]Rail Fang[/B]. I don't know what else to call it. Useless weight: gone.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2418.jpg[/IMG]
OMGWTFBBQ!
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2420.jpg[/IMG]
The official weigh-in on the shop food scale. For both sides that's [B]3.25 lbs[/B]!
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2422.jpg[/IMG]
Then I got to thinking about the captured nut bracket just behind the Rail Fang that's no longer in use for the same reason. It's welded to the front anti-sway bar mounting horn on the front x-brace/engine cradle.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2423.jpg[/IMG]
This guy was a bitch to get off. The welds are in funny locations making it difficult to get the grinder in. I eventually had to cut it in two to make the job easier.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2424.jpg[/IMG]
Weigh-in. For both that's 1.125 lbs.[/quote]
what can/should i slice off? >:D[/quote]
Front Rail Fangs
[quote=68Cadillac;30503989]
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2416.jpg[/IMG]
Just finished removing the [B]Rail Fang[/B]. I don't know what else to call it. Useless weight: gone.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2418.jpg[/IMG]
OMGWTFBBQ!
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2420.jpg[/IMG]
The official weigh-in on the shop food scale. For both sides that's [B]3.25 lbs[/B]!
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2422.jpg[/IMG]
Then I got to thinking about the captured nut bracket just behind the Rail Fang that's no longer in use for the same reason. It's welded to the front anti-sway bar mounting horn on the front x-brace/engine cradle.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2423.jpg[/IMG]
This guy was a bitch to get off. The welds are in funny locations making it difficult to get the grinder in. I eventually had to cut it in two to make the job easier.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2424.jpg[/IMG]
Weigh-in. For both that's 1.125 lbs.[/quote]
| 68Cadillac | 06-20-2012 04:35 PM |
Finally welded (GMAW / MIG) the intake runner to the TGV bodies.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4760.jpg[/IMG]
Practiced bunches to get it correct. This is my fourth scrap piece. The first three are in the trash.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4769.jpg[/IMG]
Wrote every setting down so I could replicate my efforts.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4744.jpg[/IMG]
Prepping the work
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4745.jpg[/IMG]
Beveled and SS wire brushed
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4758.jpg[/IMG]
Reinstalled everything and it ran great for 120 miles then it blew out one of the JB weld plugs I used to fill the holes where the TGV mechanicals used to go before I ground it all off. Looks like it only had 2 mm of wall thickness to bond to after I finished with the grinder.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4726.jpg[/IMG]
**** me? No, **** you car.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4765.jpg[/IMG]
So I pulled it all off and plug welded all four of those holes. And the whole things haS held for over 600 miles. Some of those miles included towing a pop up camper trailer from Las Vegas, NV to Flagstaff, AZ.
All to save 2256 grams (4.97 lb) of weight. :diaf:
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4760.jpg[/IMG]
Practiced bunches to get it correct. This is my fourth scrap piece. The first three are in the trash.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4769.jpg[/IMG]
Wrote every setting down so I could replicate my efforts.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4744.jpg[/IMG]
Prepping the work
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4745.jpg[/IMG]
Beveled and SS wire brushed
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4758.jpg[/IMG]
Reinstalled everything and it ran great for 120 miles then it blew out one of the JB weld plugs I used to fill the holes where the TGV mechanicals used to go before I ground it all off. Looks like it only had 2 mm of wall thickness to bond to after I finished with the grinder.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4726.jpg[/IMG]
**** me? No, **** you car.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4765.jpg[/IMG]
So I pulled it all off and plug welded all four of those holes. And the whole things haS held for over 600 miles. Some of those miles included towing a pop up camper trailer from Las Vegas, NV to Flagstaff, AZ.
All to save 2256 grams (4.97 lb) of weight. :diaf:
| 68Cadillac | 06-20-2012 05:14 PM |
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4727.jpg[/IMG]
Cut some extra plastic tabs off the radiator and fans. [COLOR="Red"]72 grams.[/COLOR]
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4730.jpg[/IMG]
Removed the mesh and emblem from the front of the bumper insert
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4731.jpg[/IMG]
[COLOR="Red"]Saved 179 grams.[/COLOR]
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4746.jpg[/IMG]
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4728.jpg[/IMG]
Deleted the PCV system. 475 grams to start. 22 g off camera. Yes I tared out the front grill. The hoses wouldn't cooperate and stay put on the scale without it.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4749.jpg[/IMG]
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4751.jpg[/IMG]
Replaced with 129 grams of K&N filters.[COLOR="Red"] Saved 346 grams.[/COLOR]
Altogether saved 597 grams from the modifications in this post. (1.32 lb for us Yanks)
Cut some extra plastic tabs off the radiator and fans. [COLOR="Red"]72 grams.[/COLOR]
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4730.jpg[/IMG]
Removed the mesh and emblem from the front of the bumper insert
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4731.jpg[/IMG]
[COLOR="Red"]Saved 179 grams.[/COLOR]
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4746.jpg[/IMG]
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4728.jpg[/IMG]
Deleted the PCV system. 475 grams to start. 22 g off camera. Yes I tared out the front grill. The hoses wouldn't cooperate and stay put on the scale without it.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4749.jpg[/IMG]
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4751.jpg[/IMG]
Replaced with 129 grams of K&N filters.[COLOR="Red"] Saved 346 grams.[/COLOR]
Altogether saved 597 grams from the modifications in this post. (1.32 lb for us Yanks)
| bue car | 06-20-2012 07:19 PM |
looking good.
| Nekronaut | 06-20-2012 07:40 PM |
i'm curious about balance after removing the spare. I would like to do this (seeing as its a really quick way to drop a few pounds), but how does this effect the front/rear balance of the car?
| Psychoreo | 06-20-2012 07:46 PM |
[quote="Nekronaut"]i'm curious about balance after removing the spare. I would like to do this (seeing as its a really quick way to drop a few pounds), but how does this effect the front/rear balance of the car?[/quote]
I haven't had the spare in my car in months.
I haven't had the spare in my car in months.
| u2_m4r1n3 | 06-23-2012 06:31 PM |
It's about 25-30 lbs off with all spare kit removed. Not totally significant overall, but definitely a difference in feel. As the rear end is already lighter than the front, definitely try attacking the front. I'd definitely do a battery relocation.
| gtasti | 06-23-2012 08:00 PM |
Dss carbon shaft and the tomei ti exhaust coming soon
That should save me a few lbs
That should save me a few lbs
| tachrev | 06-29-2012 09:37 AM |
68Caddy, Still running the turbo coolant reservoir(bolts to the intake)? Does your radiator have a cap?
Take that off, hook the two hoses together, and weigh!
It might be a little more work to bleed the coolant system, but that doesn't look like something that will scare you
Take that off, hook the two hoses together, and weigh!
It might be a little more work to bleed the coolant system, but that doesn't look like something that will scare you
| WRX 2002 | 07-02-2012 07:49 PM |
[quote=tachrev;37488517]68Caddy, Still running the turbo coolant reservoir(bolts to the intake)? Does your radiator have a cap?
Take that off, hook the two hoses together, and weigh!
It might be a little more work to bleed the coolant system, but that doesn't look like something that will scare you[/quote]
Not sure that would be good idea as it cools to turbo off after turning the engine off. If you still have the metal one you could replace with the plastic version from Subaru. It weighs less and is more reliable.
Take that off, hook the two hoses together, and weigh!
It might be a little more work to bleed the coolant system, but that doesn't look like something that will scare you[/quote]
Not sure that would be good idea as it cools to turbo off after turning the engine off. If you still have the metal one you could replace with the plastic version from Subaru. It weighs less and is more reliable.
| 68Cadillac | 07-03-2012 09:11 PM |
[quote=tachrev;37488517]68Caddy, Still running the turbo coolant reservoir(bolts to the intake)? Does your radiator have a cap?
Take that off, hook the two hoses together, and weigh![/quote]
In a previous post in this thread I posted it's weight. I've always assumed that the up coolant reservoir was vital to getting and keeping air out of the cooling system. Air will get back in there no matter how well you bleed the system, according to Carroll Smith's books. So you need to have a system that continually removes the air that does get in. And the Upper Res is vital to that. I suppose I could weigh one of the plastic ones and see if there's any savings to be had there.
[quote=68Cadillac;30515881]Lost a bit more.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2428.jpg[/IMG]
It's 2 pounds even (empty) and without the cap.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2434.jpg[/IMG]
****. All that effort and only lost [B]3/16 lbs[/B].[/quote]
Looks like the OEM weighs: 907 grams
My modified one weighs: 822 grams
Take that off, hook the two hoses together, and weigh![/quote]
In a previous post in this thread I posted it's weight. I've always assumed that the up coolant reservoir was vital to getting and keeping air out of the cooling system. Air will get back in there no matter how well you bleed the system, according to Carroll Smith's books. So you need to have a system that continually removes the air that does get in. And the Upper Res is vital to that. I suppose I could weigh one of the plastic ones and see if there's any savings to be had there.
[quote=68Cadillac;30515881]Lost a bit more.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2428.jpg[/IMG]
It's 2 pounds even (empty) and without the cap.
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2434.jpg[/IMG]
****. All that effort and only lost [B]3/16 lbs[/B].[/quote]
Looks like the OEM weighs: 907 grams
My modified one weighs: 822 grams
| sc00by4life | 07-03-2012 09:15 PM |
[quote="68Cadillac"]
In a previous post in this thread I posted it's weight. I've always assumed that the up coolant reservoir was vital to getting and keeping air out of the cooling system. Air will get back in there no matter how well you bleed the system, according to Carroll Smith's books. So you need to have a system that continually removes the air that does get in. And the Upper Res is vital to that. I suppose I could weigh one of the plastic ones and see if there's any savings to be had there.
[/quote]
It's more critical for pulling coolant up through the turbo.
In a previous post in this thread I posted it's weight. I've always assumed that the up coolant reservoir was vital to getting and keeping air out of the cooling system. Air will get back in there no matter how well you bleed the system, according to Carroll Smith's books. So you need to have a system that continually removes the air that does get in. And the Upper Res is vital to that. I suppose I could weigh one of the plastic ones and see if there's any savings to be had there.
[/quote]
It's more critical for pulling coolant up through the turbo.
| 68Cadillac | 07-03-2012 09:20 PM |
[quote=sc00by4life;37515368]It's more critical for pulling coolant up through the turbo.[/quote]
Huh? The coolant system works on pressure not vacuum.
Huh? The coolant system works on pressure not vacuum.
| bue car | 07-03-2012 09:29 PM |
[quote=68Cadillac;37515406]Huh? The coolant system works on pressure not vacuum.[/quote]
With the motor off, there is a siphon effect in play that keeps the coolant moving after you turn the car off.
With the motor off, there is a siphon effect in play that keeps the coolant moving after you turn the car off.
| Str8Gone | 07-03-2012 09:36 PM |
Just installed some AMS lightweight goodies - tubular front bumper beam and the race battery kit. Huge improvement in every aspect of performace :D
| sc00by4life | 07-03-2012 09:41 PM |
[quote="68Cadillac"]
Huh? The coolant system works on pressure not vacuum.[/quote]
I'm talking about the turbo. After the car shuts off the cooling system goes into vacuum. That's how coolant keeps cycling through the turbos after the motor is shut off....
Huh? The coolant system works on pressure not vacuum.[/quote]
I'm talking about the turbo. After the car shuts off the cooling system goes into vacuum. That's how coolant keeps cycling through the turbos after the motor is shut off....
| 68Cadillac | 07-03-2012 10:07 PM |
[quote=bue car;37515460]With the motor off, there is a siphon effect in play that keeps the coolant moving after you turn the car off.[/quote]
No kidding? Learned something new. Thanks.
No kidding? Learned something new. Thanks.
| tachrev | 07-05-2012 09:50 AM |
Here's how I see it:
[B]Turbo Cooling after Shutdown:[/B] The siphon effect should still happen, even without the tank. There is still plenty of coolant in the system for this.
The tank does not cause or stop the siphon action. The fact that the coolant in the turbo is hotter than the coolant in the rest of the system does this. It's called conduction, I believe.
Also, there are LOTS of liquid cooled turbo setups, factory and otherwise, out there that do not have a tank near the turbo.
[B]Air Pockets:[/B] After getting all the air out of the system, you should be fine.
If you have a working radiator cap and your coolant overflow is not empty, you should get no new air pockets in the system.
When you shut the car off and the coolant cools, it contracts. Coolant from the overflow will be drawn in to fill the void.
When it heats back up and expands, it will be pushed back into the coolant overflow. That is how a sealed system works.
I've checked mine after it cools off and the coolant is always right at the top of the radiator.
I felt the the coolant tank was mostly there to be a high point in the system to make filling/bleeding easier.
Now I am no engineer, just a car guy. I removed mine and I don't worry about it.
If your not comfortable doing so, no worries. Just wanted to point out my reasoning.
I saw you did a lot of other things people might consider crazy to remove weight. Just another one to think about.
[B]Turbo Cooling after Shutdown:[/B] The siphon effect should still happen, even without the tank. There is still plenty of coolant in the system for this.
The tank does not cause or stop the siphon action. The fact that the coolant in the turbo is hotter than the coolant in the rest of the system does this. It's called conduction, I believe.
Also, there are LOTS of liquid cooled turbo setups, factory and otherwise, out there that do not have a tank near the turbo.
[B]Air Pockets:[/B] After getting all the air out of the system, you should be fine.
If you have a working radiator cap and your coolant overflow is not empty, you should get no new air pockets in the system.
When you shut the car off and the coolant cools, it contracts. Coolant from the overflow will be drawn in to fill the void.
When it heats back up and expands, it will be pushed back into the coolant overflow. That is how a sealed system works.
I've checked mine after it cools off and the coolant is always right at the top of the radiator.
I felt the the coolant tank was mostly there to be a high point in the system to make filling/bleeding easier.
Now I am no engineer, just a car guy. I removed mine and I don't worry about it.
If your not comfortable doing so, no worries. Just wanted to point out my reasoning.
I saw you did a lot of other things people might consider crazy to remove weight. Just another one to think about.
| Web Foot STi | 07-05-2012 10:54 AM |
The cooling our turbos get after engine shut down is called thermosiphon. It's a convection heat transfer mechanism. The hot fluid expands and the density drops. This is why hot air (fluid) rises. Cooler fluid is moves down to replace the rising hot fluid by gravity.
It was used in the model T. No water pump. Nothing new under the sun. Speaking of sun, you can see air convection on a hot day with the "heat" rising off of a road. The current's are so strong that there is optical distortion looking through them.
Yes, I'm a dumb mechanical engineer.
It was used in the model T. No water pump. Nothing new under the sun. Speaking of sun, you can see air convection on a hot day with the "heat" rising off of a road. The current's are so strong that there is optical distortion looking through them.
Yes, I'm a dumb mechanical engineer.
| tachrev | 07-05-2012 11:14 AM |
[quote=Web Foot STi;37523282]The cooling our turbos get after engine shut down is called thermosiphon. It's a convection heat transfer mechanism. The hot fluid expands and the density drops. This is why hot air (fluid) rises. Cooler fluid is moves down to replace the rising hot fluid by gravity.
It was used in the model T. No water pump. Nothing new under the sun. Speaking of sun, you can see air convection on a hot day with the "heat" rising off of a road. The current's are so strong that there is optical distortion looking through them.
Yes, I'm a dumb mechanical engineer.[/quote]
I knew there was a technical term for it (as there is for everything).
It was used in the model T. No water pump. Nothing new under the sun. Speaking of sun, you can see air convection on a hot day with the "heat" rising off of a road. The current's are so strong that there is optical distortion looking through them.
Yes, I'm a dumb mechanical engineer.[/quote]
I knew there was a technical term for it (as there is for everything).
| bue car | 07-05-2012 12:48 PM |
The tank may be a precaution used for the longevity of the oem turbo, to avoid turbo failures for the everyday person.
| Web Foot STi | 07-05-2012 03:06 PM |
I thought about it a little more. Since thermosiphon is driven by the fluid's density gradient and gravity there needs to be a height difference between the top of the turbo and the top of the radiator top tank. Most cars have the turbo(s) mounted low in the engine compartment. Subaru has the turbo mounted relatively high, and the radiator relatively low for better aerodynamics. There isn't much head to drive the flow without the aux header tank. I'm sure Subaru would love to leave cost of that tank out if it was not needed.
If the top tank/aux tank was below the turbo there would be nothing driving the fluid loop and simply cook off at the turbo outlet.
If the top tank/aux tank was below the turbo there would be nothing driving the fluid loop and simply cook off at the turbo outlet.
| A1337STI | 08-13-2012 05:44 PM |
Thought I'd join the fun of this thread, My car used to be lighter than most of the target goals...
I'v read the first 8 or so pages and the last 2.. i need to go back and read all the middle ...
My car is a 1993 Subaru Impreza. For 3 years i rallied it as a production car 1.8L FWD. the last time i had it on car scales, wet (with a full tank of gas) she weighed :
[B]2450 [/B] It was in log booked Trim, but not passing tech trim. car was wet, with a full tank of gas, a full sized spare tire, and the stock scissor jack.
Since the weigh in i've added 2 fire extinguishers, first aid kit, spill kit, and rattle gun.
a year later I added a few more roll cage bars (new 09 rules) . and since then i've done a full RS 2.5 swap . the 93 owners manual says the awd version is 175 lbs more which would be 2625 + all the other stuff i listed.
So i think my car is around 2700 lbs and I've been raciing it in a production trim (plastic piller trim, stock doors, windows, battery, etc)
I'm going to begin a weight savings operation for my car. I do comute in my car on a very frequent basis, but i'm not overly converned with keeping it "comfy" its not comfy at all ... I want to modify my trunk & hood by cutting out all the extra metal that gives it stregnth (no more standing on the hood or trunk) and possibly even the C pillers (I've got a roll cage and no back seats ... why not? )
gut the doors
replace glass with lexan (except the windshield)
light weight battery
???? Ideas ? I'd like to replace the bumper beams (or remove them) but being that its a rally car , crashes are common and usually (hopefully) you smash your front end (first) ... though maybe i can use a roll cage pipe that would be stronger and lighter?
ideas? :)
I'v read the first 8 or so pages and the last 2.. i need to go back and read all the middle ...
My car is a 1993 Subaru Impreza. For 3 years i rallied it as a production car 1.8L FWD. the last time i had it on car scales, wet (with a full tank of gas) she weighed :
[B]2450 [/B] It was in log booked Trim, but not passing tech trim. car was wet, with a full tank of gas, a full sized spare tire, and the stock scissor jack.
Since the weigh in i've added 2 fire extinguishers, first aid kit, spill kit, and rattle gun.
a year later I added a few more roll cage bars (new 09 rules) . and since then i've done a full RS 2.5 swap . the 93 owners manual says the awd version is 175 lbs more which would be 2625 + all the other stuff i listed.
So i think my car is around 2700 lbs and I've been raciing it in a production trim (plastic piller trim, stock doors, windows, battery, etc)
I'm going to begin a weight savings operation for my car. I do comute in my car on a very frequent basis, but i'm not overly converned with keeping it "comfy" its not comfy at all ... I want to modify my trunk & hood by cutting out all the extra metal that gives it stregnth (no more standing on the hood or trunk) and possibly even the C pillers (I've got a roll cage and no back seats ... why not? )
gut the doors
replace glass with lexan (except the windshield)
light weight battery
???? Ideas ? I'd like to replace the bumper beams (or remove them) but being that its a rally car , crashes are common and usually (hopefully) you smash your front end (first) ... though maybe i can use a roll cage pipe that would be stronger and lighter?
ideas? :)
| u2_m4r1n3 | 08-13-2012 06:01 PM |
Custom front bumper. Exactly like you said, stronger and lighter.
| bue car | 08-13-2012 06:11 PM |
hi buddy :D
| Gancherov | 08-15-2012 03:19 AM |
I did both front and rear with 1.75inch diameter DOM steel, same as my rollbar. saves ~20 pounds over the stock bumper beams and costs all of $20 to make if you have a welder and bender handy.
front beam after ~35mph impact into a boulder
[IMG]http://www.glebserbin.com/photos/1182730216_Z7MmA-M.jpg[/IMG]
[IMG]http://www.glebserbin.com/photos/1182727692_fBbQZ-M.jpg[/IMG]
Decided to do a tube front end after the accident, this front end ripped a diamond plate bumper off a taco truck and simply bounced off with almost no damage to my car. I replaced one headlight and straightened the fender a bit (free headlight, 1 hour labor), the taco truck needed a new diamond plate bumper because i mashed it up and ripped it off the welds that held it to the frame ($1200).
[IMG]http://www.glebserbin.com/photos/i-rxNbNkM/0/M/i-rxNbNkM-M.jpg[/IMG]
[IMG]http://www.glebserbin.com/photos/i-x4RJ9S7/0/M/i-x4RJ9S7-M.jpg[/IMG]
Rear beam:
[IMG]http://www.glebserbin.com/photos/i-fsfK5Vf/0/M/i-fsfK5Vf-M.jpg[/IMG]
[IMG]http://www.glebserbin.com/photos/i-GWpQP7j/0/M/i-GWpQP7j-M.jpg[/IMG]
front beam after ~35mph impact into a boulder
[IMG]http://www.glebserbin.com/photos/1182730216_Z7MmA-M.jpg[/IMG]
[IMG]http://www.glebserbin.com/photos/1182727692_fBbQZ-M.jpg[/IMG]
Decided to do a tube front end after the accident, this front end ripped a diamond plate bumper off a taco truck and simply bounced off with almost no damage to my car. I replaced one headlight and straightened the fender a bit (free headlight, 1 hour labor), the taco truck needed a new diamond plate bumper because i mashed it up and ripped it off the welds that held it to the frame ($1200).
[IMG]http://www.glebserbin.com/photos/i-rxNbNkM/0/M/i-rxNbNkM-M.jpg[/IMG]
[IMG]http://www.glebserbin.com/photos/i-x4RJ9S7/0/M/i-x4RJ9S7-M.jpg[/IMG]
Rear beam:
[IMG]http://www.glebserbin.com/photos/i-fsfK5Vf/0/M/i-fsfK5Vf-M.jpg[/IMG]
[IMG]http://www.glebserbin.com/photos/i-GWpQP7j/0/M/i-GWpQP7j-M.jpg[/IMG]
| JDwhiteWRX | 08-15-2012 04:38 AM |
Nice job with the tube front, looks great!
| A1337STI | 08-15-2012 06:49 PM |
Got a very small start last night. tore out 15 pounds of "stuff"
i still had some A,B & C piller trim in the car (was running in a production class)
and i tore off the rear door cards . i was kinda surprised it added up to 15 lbs. Eager to tear into the rear doors but i need to wait for some professional / (knows wtf he's doing) type help :lol:
I really like the idea of using a roll cage tube for the front bumper beam, and the same with the rear...
hmm
i still had some A,B & C piller trim in the car (was running in a production class)
and i tore off the rear door cards . i was kinda surprised it added up to 15 lbs. Eager to tear into the rear doors but i need to wait for some professional / (knows wtf he's doing) type help :lol:
I really like the idea of using a roll cage tube for the front bumper beam, and the same with the rear...
hmm
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