Thứ Ba, 1 tháng 11, 2016

Weight Reduction part 31

T-37 11-27-2013 08:03 PM

[quote="rockthebox50;41031181"]3 Questions

1. Has anyone swapped the 08+ plastic intake manifold into a 02-07 wrx/sti?

-I'd like to do this while swapping for Composite TGV's to remove more weight from the front, especially since it is elevated weight above the axles.

2. Is there a TMIC that is lighter than any of the OEM one's, I've only had the spearco which is obviously heavy.

3. Would replacing the OEM up-pipe and headers also be worthy for weight off the front end?

- I'm not sure of the weight difference when comparing OEM to aftermarket of those parts

Thanks for any information![/quote]

1. Yes. Search for user: mccannix.

2. As far as I'm aware, all of the aftermarket options are heavier than OEM.

3. Yes.
bue car 11-27-2013 10:31 PM

Meh not worth it, 06-07 wrx has plastic end tanks, yes.
TCh 11-30-2013 12:34 AM

Thought I'd share what I've done so far to remove 220 lbs from a bugeye wagon with minimal impact on usage:

Item Weight savings Cost Cost/lb Notes
"Tire, jack, tools" 31 0.00 0.00 Super easy and reversable
U Subframe 28 0.00 0.00 "Removed, with bolts and front splash pan"
Remove trunk board/carpet/pad 16 0.00 0.00
Transverse floor brace under rear seat 7 0.00 0.00 Easy
Frontmost Driveshaft protection plate 4 0.00 0.00 Slight reduction in protection
Engine compartment brackets etc 3 0.00 0.00 "Consolidated, especially around DRL/O2 junctions"
Air inlet snorkel 2.5 0.00 0.00 Pain to remove
L Rear tow hook with bolts 2 0.00 0.00 Still have R Rear
Front brake shields & bolts 1.5 0.00 0.00 Slight reduction in protection but better cooling
Glove box door brace w/ 4 screws 1.5 0.00 0.00 Minor pain
Drivers side under-dash plate 1.5 0.00 0.00
Hood liner 1 0.00 0.00 No brainer
Muffler heat shield 1 0.00 0.00
Downpipe heatshields 1 0.00 0.00
Wagon center cargo attachments 1 0.00 0.00
Misc nuts and bolts 1 0.00 0.00
DRL modules 0.75 0.00 0.00
Shorai lfx36a3-bs12 battery 30.5 300.00 9.84 "Slight reduction in CCA/AH, old was 35 lbs, new is 4.6, plus removed terminals"
Oswald front bumper beam 22 265.00 12.05 Nicely made, better strength than JDM
Oswald rear bumper beam 21 275.00 13.10
Gutted Uppipe 2 50.00 25.00
Invidia downpipe 11 280.00 25.45 Performance plus weight
Volk TE37 wheels 21 740.00 35.24 Rotating mass plus overall weight
Aluminum Under Pulley 5 200.00 40.00 Difficult to get correct belts
OEM Intake (net replace with SPT) 2.5 100.00 40.00 Minor performance gain
SPT Turbo heatshield 1.5 65.00 43.33 Replaced stock
Splitter 4 0.00 200.00 "Net, replaced scoop with JDM"
TOTAL 220.25 $2,275.00
RavensFan7 11-30-2013 06:35 AM

^Nice!

[quote="TCh;41040784"]
Shorai lfx36a3-bs12 battery 30.5 300.00 9.84 "Slight reduction in CCA/AH, old was 35 lbs, new is 4.6, plus removed terminals"
[/quote]

How do you like this battery?

Is it in the stock location?

One of these Shorai batteries is my next big weight reduction and I just hope it can last in the stock location (engine heat, ect.)
TCh 11-30-2013 04:05 PM

The battery is the most cost-effective pure weight savings I've done - saved a good 30 lbs over the battery that came in the car, should be 26-27 lbs over what I've usually seen listed as stock battery weight (31 lbs).

We're in a cooler climate in NW Washington, so-far no winter issues. Spec's are decent anyhow, with 540 CCA.

Installed in stock location, with a Braille mounting kit (you can get as good for $7 at an auto parts store, 7" mounting studs plus a shorter plastic bracket), and I bought an M6 to SAE Top Post Battery Terminal Adapter. I used one terminal on the + side for better fitment, attached the wires directly to the battery on the - side.
JDwhiteWRX 12-01-2013 04:32 AM

I got my 4 point cage in today and removed another ~3kg, car should be around 1252kg now.

[IMG]http://i220.photobucket.com/albums/dd209/sivadleoj/cage-1.jpg[/IMG]
gtasti 12-02-2013 06:55 AM

Any idea on how to remove spot welds guys
In tight locations trying to remove the jack mounting bracket
mephistomarius 12-06-2013 12:35 PM

caddy was there any light on the dash after removing all your airbag stuffs?
Fender137 12-06-2013 12:44 PM

[QUOTE=JDwhiteWRX;41044959]I got my 4 point cage in today and removed another ~3kg, car should be around 1252kg now.

I like you're style ;)
68Cadillac 12-10-2013 09:04 AM

[quote=mephistomarius;41076528]caddy was there any light on the dash after removing all your airbag stuffs?[/quote]

[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4926.jpg[/IMG]
Remove gauge cluster from dash

[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4928.jpg[/IMG]
Find ABS dummy light location

[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4929.jpg[/IMG]
Apply opaque tape to back side of gauge. Color in Tinkerbell fairy book.

[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_4932.jpg[/IMG]
Reinstall. Turn on and test. No ABS Light!

Alternatively you could just remove the bulb from the gauge cluster that lights up behind the ABS letters. I choose not to do that. That requires further disassembly of the gauge cluster. The tape solution was easier.
A-man07 12-11-2013 07:11 AM

So after burning through 4 Braille AGM batteries, about 1 per year even with trickle charging, and having them die each winter, I decided to purchase a Shorai LFX36L3-BS12 Extreme Rate Lithium Iron Powersports Battery for my 07 Sti. This is the "big" Shorai which weighs about 5 lbs and promises over 500 CCA. It was $260 through Amazon and I bought the Shorai charger as well. Will install it this weekend and see how it goes.
Str8Gone 12-11-2013 04:28 PM

Anymore weight reduction to be had here??

[IMG]http://i267.photobucket.com/albums/ii282/04dubrex/029_zpsfc7d91ed.jpg[/IMG]
bue car 12-11-2013 04:34 PM

Yep... 06 WRX TMIC, plastic manifold, plastic turbo coolant tank, loose the 'bling' hardware, loose the pulley cover, loose the ABS...tip of the iceberg.

You asked... not saying I would run some of those plastic mods myself.







Why so serious? :derp:













hahaha
Str8Gone 12-11-2013 09:07 PM

Ive been thinking about the abs delete kit, too much $ right now. doubt a stock tmic would be ok for my 18g. The alt. cover and hardware dont weigh any more than stock if not less. great ideas though. going back to alum DS when I get a new clutch.
Recoil 12-11-2013 09:23 PM

[quote="Str8Gone;41106223"]Ive been thinking about the abs delete kit, too much $ right now. doubt a stock tmic would be ok for my 18g. The alt. cover and hardware dont weigh any more than stock if not less. great ideas though. going back to alum DS when I get a new clutch.[/quote]

I use an 04-07 STI on my 18gxtr. 331awhp, no problems and room to spare.
Millhouse_5 12-11-2013 10:43 PM

I'm still working on getting a LiPo battery installed in place of the standard lead acid. Whole system would be maybe 2-3 pounds total. Would have nowhere near the lead acid capacity, but just as much current capability if I do it right. Great for a track car or weekend driver.

I did some preliminary testing today but as I expected 50 amps just didn't cut it for starting the car. I'll need to step up my game with some bigger batteries to take this further.
DamnThatRevLimiter 12-13-2013 08:52 PM

[url]http://www.importtuner.com/tech/impp_1004_increasing_performance_efficiency_style/viewall.html[/url]

Hopefully the link works. They improved power and gas mileage and reduced the weight .
DamnThatRevLimiter 12-13-2013 09:08 PM

So I have seen a few people post about weight distribution . It made me think , if the chassis is about a 60F/40R ; and we were to do some speculation on just removing weight on the front by how much could we effect the distribution ? So i guess for conversation sake lets figure this out for a 2004 STI, and getting as close to 50/50 as possible.I know that corner balancing and adding a bunch of weight to the back would do it. Maybe there is a formula or something to help those ones out, it makes me wonder also but I am not a math wiz, or a human spell check. So if we start with a stock 2004 STI, battery to the back, no front bumper beam,no ac,u-brace removed etc. What would the balance change to?
DamnThatRevLimiter 12-14-2013 09:09 AM

Found this guess we should drive backwards, lol
[url]http://link.springer.com/article/10.1007%2Fs12239-008-0037-2[/url]
To expand from the earlier post is , just finding the numbers behind this subpart of reduction.
If we took 90 or so pounds just off the front how much would that change the distrobution?
A-man07 12-14-2013 11:29 AM

[quote=A-man07;41101845]So after burning through 4 Braille AGM batteries, about 1 per year even with trickle charging, and having them die each winter, I decided to purchase a Shorai LFX36L3-BS12 Extreme Rate Lithium Iron Powersports Battery for my 07 Sti. This is the "big" Shorai which weighs about 5 lbs and promises over 500 CCA. It was $260 through Amazon and I bought the Shorai charger as well. Will install it this weekend and see how it goes.[/quote]

So I got the Shorai installed. It comes with everything except terminal posts appropriate for an automobile which I had from my AGM batteries. It started the car immediately and much more smoothly that any of the Brailles I've had. Very impressed with this 5 lb dynamo. Looks like AGM is on its last legs.
bue car 12-14-2013 11:34 AM

Good to hear
68Cadillac 12-14-2013 04:03 PM

[quote=DamnThatRevLimiter;41119753]If we took 90 or so pounds just off the front how much would that change the distribution?[/quote]

Using my [URL="http://forums.nasioc.com/forums/showpost.php?p=26342362&postcount=9"]2004 Wagon in STX trim[/URL]

If you removed 90 lbs from the front the distribution would change from:

1878/1424 - 56.9%/43.1%
to
1788/1424 - 55.7%/44.3%

This is assuming the weight removed is right above the tire contact patch. In the real world, weight removed in front of the tire contact patch would affect the distribution more than the weight actually removed. Leverage and all that.

To get perfect 50/50 you'd have to remove 454lb off the front and/or start shifting stuff rearward (e.g. battery to trunk).
DamnThatRevLimiter 12-16-2013 08:31 AM

[url]http://bugeyegarage.wordpress.com/2011/03/06/track-bugeye-chan-mans-wrx-sti-type-ra-spec-c/[/url]

The car is 2480 ! The lightest I have heard of is in the 26xx range .
Does anyone know more on that car ? It is awesome !
68Cadillac 12-16-2013 12:12 PM

[quote=DamnThatRevLimiter;41127814]
The car is 2480 ! The lightest I have heard of is in the 26xx range .
Does anyone know more on that car ? It is awesome ![/quote]
There's a bunch of mods he's done that might be out of reach for many. Looks like full carbonfiber/fiberglass doors. Gutted doors. Front doors don't have "glass" Rear doors and rear window run Lexan. CF trunk. Paired down, custom, wiring harness. Gutted B pillars, if you're running a safety cage, you don't need all the material inside the B pillars.
JDwhiteWRX 12-16-2013 05:49 PM

I pulled the dash out of mine yesterday, could not believe how heavy that thing is. I think you could shave a lot off the back of that thing and it would still be functional.
theogt 12-18-2013 12:49 PM

[quote=68Cadillac;30515881]Lost a bit more.




Because my Green Brackets of Death are long gone having the mounting tab on the upper coolant tank bugged me. So..

[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2428.jpg[/IMG]
It's 2 pounds even (empty) and without the cap.


Cup-o-Coolant


In process.

[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2434.jpg[/IMG]
****. All that effort and only lost [B]3/16 lbs[/B]. :diaf:[/quote]

How much for a plastic model
blkhawk91 12-19-2013 03:12 AM

[quote=DoinkMobb;3092345]Ah...the old sound deadening tar. That was a fun little project.

The easy part was taking out the carpet and seats and little plastic caps to hold everything in place. The hard part was squatting on the floor of my car and chiseling and scraping for horus and hours.
I had a flat head screwdriver, a paint scraper and a mallet as my tools. Some sections chipped off in a million little pieces while other sections sorta peeled off. All in all, I estimated that I took out about 20 lbs of tar.

I did the same exact thing when I had a neon. was not worth it. Eventually I ended up getting my heat gun and would heat up the deadening, the get the paint scraper and scrape it up. I was getting pretty good at it towards the end after days and days and many headaches.
RavensFan7 12-19-2013 04:32 AM

Gotta use dry ice for the sound deadening...makes it fairly easy to remove.
JDwhiteWRX 12-19-2013 06:52 AM

[quote=RavensFan7;41145182]Gotta use dry ice for the sound deadening...makes it fairly easy to remove.[/quote]

x100

super easy job.
RavensFan7 12-19-2013 07:05 AM

Big pieces like this, instead of slowly chipping away for hours:
[IMG]http://i855.photobucket.com/albums/ab118/Mk7421/1382118057_zps61b2b106.jpg[/IMG]
Still need to do the drivers side in my car then all mine is out...hoping to do that this weekend when it warms up again.
68Cadillac 12-19-2013 12:16 PM

[quote=68Cadillac;30709342]
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2515.jpg[/IMG]
Overall I removed:
[B]24.0[/B] lbs of sound padding,
[B]8.6[/B] lbs of sound deadening tar,
[B]1.6[/B] lbs of carpet padding, and
[B]0.1[/B] lbs of all of the above but in dust form. This is an estimate. If you've ever tried to take it all out you know that some of it breaks up into tiny little bits of sound deadening or padding "dust". You just end up vacuuming it out.

So the grand total ended up weighing [B][SIZE="3"]34.3 lbs[/SIZE][/B]. Sweet Neil deGrasse Tyson, that's a lot of mass removed!

If I was able to get the stuff blocked by the HVAC it would have ended up weighing ~35.4 lbs[/quote]
When I did mine I used dry ice too. That is: frozen carbon-dioxide. Find a local super market that carries the stuff. 10lb if your fast, 20lb and you won't have to rush. Let it sit on an area 'til you hear it start popping then give it a few taps with a dead blow hammer. No need to go all coal-miner on it. Just a few whacks and the tar will come off in large sheets. Then push the dry ice to the next area and wait. I found it best to have two piles of dry ice chunks going. One you're hammering on. And one cooling the next area.

And get plenty of ventilation. Don't black out from breathing in 98% CO2 and land your face in the ice.

If you live in a cold area of the world you could also just park your car outside in sub freezing temps and start hammering it out after an hour or two.
RavensFan7 12-19-2013 12:29 PM

Yup to all that^^

One thing I found to make it easier, crush up the dry ice as fine as you can.
Mine comes in pellet form, so I put some in a ziplock bag and mash it up with a rubber mallet. Once it's almost a sand-like consistency, just pour it over the sound deadening, and spread it around.
[IMG]http://i855.photobucket.com/albums/ab118/Mk7421/1382189986_zpsddcc0f63.jpg[/IMG]
There's some larger chunks in this pic, but you can still see some of the fine stuff I mashed up.

I was scared I was gonna crack my rusty old floor hitting it with a hammer, so I just chiseled away with a mallet and flathead. Even then, its very minimal effort to chisel away since its frozen solid.

20 lbs is a pretty good estimate and would definitely be enough.....you just gotta do it all in one day because it will evaporate overnight....ask me how I know... ;)
(Or buy less at a time, and do it in parts over various days)
bue car 12-19-2013 02:10 PM

I use a heat gun, way cheaper. **** spending money on dry ice.

[URL=http://s146.photobucket.com/user/thyfacelessgod/media/95%20L/Picture114.jpg.html][IMG]http://i146.photobucket.com/albums/r255/thyfacelessgod/95%20L/Picture114.jpg[/IMG][/URL]

[URL=http://s146.photobucket.com/user/thyfacelessgod/media/95%20L/Cleanfloors2.jpg.html][IMG]http://i146.photobucket.com/albums/r255/thyfacelessgod/95%20L/Cleanfloors2.jpg[/IMG][/URL]

[URL=http://s146.photobucket.com/user/thyfacelessgod/media/95%20L/Cleanfloors4.jpg.html][IMG]http://i146.photobucket.com/albums/r255/thyfacelessgod/95%20L/Cleanfloors4.jpg[/IMG][/URL]

You can eat off it it's so clean.

[URL=http://s146.photobucket.com/user/thyfacelessgod/media/95%20L/Cleanfloor.jpg.html][IMG]http://i146.photobucket.com/albums/r255/thyfacelessgod/95%20L/Cleanfloor.jpg[/IMG][/URL]
RavensFan7 12-19-2013 03:01 PM

Edit: :lol: I was just about to say in my reply, "damn! You can eat off that its so clean!".

Did that take long?

When I did my trunk, the sound deadening back there was SATURATED with oil (spilled in trunk a while ago) and it had to be scraped off.....took a while.

...and I get my dry ice for $8 per 5 lbs :p
Not [i]too[/i] bad....and I broke the car up into sections, and have been doing them one at a time:

-trunk & under backseats
-passenger side floor (front and back)
-driver side floor (front and back)

So, I've only spent $16....another $8 and I'm done.....but yea I feel ya, electric heat gun = free
Lol
JDwhiteWRX 12-19-2013 06:37 PM

[quote=bue car;41147533]I use a heat gun, way cheaper. **** spending money on dry ice.

You can eat off it it's so clean.

[/quote]

Nice job, did you use some kind of solvent too? if so what kind?

I need to clean mine up a little before I paint it, 99% was done with dry ice but there are a few spots to clean up.
RavensFan7 12-19-2013 06:43 PM

Yea I meant to say something in my last post but.....Bravo! That is amazing.
blubug_768 12-20-2013 09:40 PM

The only part I had problems with was the little chunk under the windshield on the passenger side... its still there in fact.
arco 12-22-2013 04:51 AM

FYI for the weight watchers out there, I have this custom painted SGM CF trunk for sale. It weighs only 7lbs! Save 17 lbs off this mod by replacing it with yours(wing is sold)

[IMG]http://imageshack.us/a/img854/2691/2a25c001.jpg[/IMG]

[IMG]http://imageshack.us/a/img828/8818/5635b698.jpg[/IMG]

here's the link
[url]http://forums.nasioc.com/forums/showthread.php?t=2583342[/url]
gtasti 12-22-2013 07:07 AM

Anyone know what the sensor on the center of the dash in the very front piece ?
niblick 12-22-2013 10:44 AM

[quote="gtasti;41159798"]Anyone know what the sensor on the center of the dash in the very front piece ?[/quote]

Do you have a pic?
bue car 12-22-2013 01:14 PM

I think a headlight sensor for other models, not a us option? my guess
gtasti 12-23-2013 08:34 AM

My car came from Texas so I thought was for head lights too
68Cadillac 01-10-2014 12:21 AM

[quote=68Cadillac;30515881]
[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/SubaruParts/IMG_2428.jpg[/IMG]
It's 2 pounds even (empty) and without the cap.[/quote]
Aluminum upper coolant tank is ~907g (2 lb) without cap

[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/Factory%20Five%20Racing%20818R/IMG_0089.jpg[/IMG]
The plastic upper coolant tank is 349 grams without cap

Run the plastic one
bue car 01-10-2014 12:34 AM

nice numbers!
68Cadillac 01-10-2014 12:45 AM

[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/Factory%20Five%20Racing%20818R/IMG_0115.jpg[/IMG]
2006 WRX Secondary Air Pump Injection system 4.871 kg! I forgot to put the extra bolts on with it. You can see them in the baggie on the left of the photo next to the primer cans. I cannot believe how much this system weighs. Plus all the extra wiring to run this.

Funny thing is my 1968 Cadillac Coupe deVille ran a system just like this. A belt driven pump delivered positive pressure air to the heads and exhaust. It was the first emissions equipment Cadillac ever installed on any of it's cars.
bue car 01-10-2014 12:49 AM

Smog pump! Fun as **** when they seize!
myoussef0 01-10-2014 09:42 AM

If any of you end up buying a lightweight subframe I'd be willing to buy the stock one if it's in good condition.
bue car 01-10-2014 12:07 PM

where you located? i have my oem one with hardware
rex n effect 01-11-2014 12:06 AM

[quote=68Cadillac;41252348][IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/Factory%20Five%20Racing%20818R/IMG_0115.jpg[/IMG]
2006 WRX Secondary Air Pump Injection system 4.871 kg! I forgot to put the extra bolts on with it. You can see them in the baggie on the left of the photo next to the primer cans. I cannot believe how much this system weighs. Plus all the extra wiring to run this.

Funny thing is my 1968 Cadillac Coupe deVille ran a system just like this. A belt driven pump delivered positive pressure air to the heads and exhaust. It was the first emissions equipment Cadillac ever installed on any of it's cars.[/quote]

where was that!? Does it come in an '02?
bue car 01-11-2014 12:58 AM

^ nope
gtasti 01-11-2014 10:24 AM

[quote=68Cadillac;41252263]Aluminum upper coolant tank is ~907g (2 lb) without cap

[IMG]http://i162.photobucket.com/albums/t278/RasmusHansen/Factory%20Five%20Racing%20818R/IMG_0089.jpg[/IMG]
The plastic upper coolant tank is 349 grams without cap

Run the plastic one[/quote]

This I like
68Cadillac 01-11-2014 11:40 AM

[quote=68Cadillac;41252348]2006 WRX Secondary Air Pump Injection system 4.871 kg! I[/quote]

[quote=rex n effect;41258560]where was that!? Does it come in an '02?[/quote]

I'd like to write Subaru began to install this system on 2006 and up WRX's. I can't find a source on that; might be wrong.

[IMG]http://i.imgur.com/T24bBdi.png[/IMG]
The system is located underneath the intercooler on top of the motor nearest the transmission.
bue car 01-11-2014 09:03 PM

07+ sti have them too. except the 07 for sure only goes to the drive hear, the pass side is blocked from the factory. so pipe #3 does not exist on there
Serkan 01-14-2014 02:44 AM

Does anyone know the weight savings by cutting out the spare tire well in the trunk and replacing with aluminum sheet metal ?

You cannot tell how much saving it would be without cutting it so I need an answer from who has done it.


Btw going with plastic intake manifold, composite tgv deletes and plastic expansion tank saves a lot of weight on top of the engine. This is one of those places you want to shave weight the most.
A-man07 01-14-2014 05:22 AM

[quote=Serkan;41274372]Does anyone know the weight savings by cutting out the spare tire well in the trunk and replacing with aluminum sheet metal ?

You cannot tell how much saving it would be without cutting it so I need an answer from who has done it.


Btw going with plastic intake manifold, composite tgv deletes and plastic expansion tank saves a lot of weight on top of the engine. This is one of those places you want to shave weight the most.[/quote]

If you want to dig through this thread, [url]http://www.iwsti.com/forums/other-vehicles/154064-team-rd-27-gc8-sti-race-car-wiring-oil-pan-post-662-a.html[/url] Ben did that on his GC race car years back.

I found the post in that thread: [url]http://www.iwsti.com/forums/2391474-post292.html[/url]

He says 45lb weight savings but I bet it's closer to 35-40 lbs. In a GD it could be more.
RavensFan7 01-14-2014 06:50 AM

^^Good info there....also some here:

[url]http://www.rs25.com/forums/f105/t151578-diy-spare-tire-holder-delete.html[/url]
gtasti 01-14-2014 07:06 AM

I was thinking of cutting mine out this yr

In stead of aluminum put plexi glass
Serkan 01-14-2014 11:37 AM

Thanks guys. I remember reading that thread on iwsti and couldn't find it again. Weight savings in range of 30lbs-45lbs is significant enough for me to tackle the project.
Serkan 01-14-2014 11:41 AM

[quote=gtasti;41274633]I was thinking of cutting mine out this yr

In stead of aluminum put plexi glass[/quote]

At least use polycarbonate (lexan).

Plexiglass will break even if you don't load anything on it. The heat from the exhaust and cold will make the plexiglass crack in no time.

And lexan (1/4" thick) is not lighter than 1/8" aluminum sheet.
bue car 01-14-2014 12:29 PM

good info!

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