924Board.org

924-76 · Joined: 05 Jun 2006 Posts: 1489 Location: Ontario, Canada

Does it worth it to put fiberglass body part to lighten a street car? (Fenders, front spoiler and hood)
I’m mainly using the car as a summer/weekend car, in other word, it is not a daily drive but a fun car/boy toy.

This question is mostly address to those who put fiberglass body part on there car.
Basically, I want to know if you have a significant gain in acceleration/performance.
I don’t want to send 1K on fiberglass and no getting more fun out of the ride.

Thanks
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1976 924 N/A ROW SOLD
1980 931S
1981 931 Part car RIP

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

You might save a total of 100 pounds, and that's just an optimistic wild guess, not scientific. Rule of thumb is that 10 pounds is the equivalent of gaining 1 HP, so you be the judge.

But you must also weigh (pun intended) the downsides of fiberglass on a street driven car. Most aftermarket fiberglass parts are meant for race cars, and don't take into account stupid drivers in parking lots or your neighbors and friends who will want to come by and admire your new found speed and performance, and promptly lean on your flimsy fiberglass parts, cracking them.
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erstwhile owner of just about every 924 variant ever made

Scorpio · Posted: Wed Jun 17, 2009 9:56 am Post subject:

a fibreglass bonnet would be awesome....ide prefer the crush resistance of a steel one in a crash anyday over the fibreglass

front fender wise fibreglass ones are ALOT lighter then steel
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1979 NA
MS1..EFI..
GARRETT T25 TURBO
BILSTEIN SHOCKS
GT BASED CUSTOM BODYKIT

Brisbane , Australia
Think mean think fast
all youll see is
my Porsches Arse!!!

Rocco R16V · Joined: 03 May 2009 Posts: 497 Location: PNW

J1NX3D · Joined: 06 Feb 2003 Posts: 1333 Location: New Zealand

my 931 already had fg guards and bonnet*. i loved them tbh. most noticeable thing about the weigh reduction of the bonnet was the gas struts lifting the bonnet for you. The car always felt light and responsive.

*hood for you hoodlums
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'86 944

Vince Ponz · Joined: 02 Nov 2002 Posts: 3581 Location: Florida

You could save about 40 lbs at the min if you replace the front and rear bumpers and shocks.
shocks about 2 1/2 lbs vs euro mounts 8 oz = 8 lbs
front and rear bumper weight savings total about 20 lbs
rubber bumpers about 2 1/2 lbs ea 10 lbs

Things you may want to change rear sound mat, fold down portion of rear seat[easily replaced back], rear rug, small spare, lighter rims, etc.

I have a front bumper with all the parts here in Fl. Sorry for the repeat posting.
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"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock

Vince Ponz · Joined: 02 Nov 2002 Posts: 3581 Location: Florida

oops
_________________
"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock

924-76 · Joined: 05 Jun 2006 Posts: 1489 Location: Ontario, Canada

Thanks guys for your input.

Ideola : Thanks for the rule of thumb, 1 HP/ 10 lbs.
Vince : Thanks for the info, but I’m already on original euro fiberglass bumper.

I see you guys all pointing me in the same direction, do the bonnet (hood) but be carfull about the fenders.

So, I will do the bonnet this fall or next spring and I’ll see how that goes before I take a decision on the fenders.

I will also look into replacing the pop-up light. I like the look but they are just to f@#%ing heavy,
any suggestion, other than the GT conversion?
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1976 924 N/A ROW SOLD
1980 931S
1981 931 Part car RIP

pocketscience · Posted: Thu Jun 18, 2009 9:26 am Post subject:

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

Deutsch-9 makes the best fixed headlight conversion on the market. It's not cheap, but the fit & finish is as good as factory by all accounts.
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erstwhile owner of just about every 924 variant ever made

pocketscience · Posted: Thu Jun 18, 2009 10:45 am Post subject:

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

Sorry, I was on my Palm earlier and didn't have access to the link. These are the ones you want:
http://www.deutschnine.com/mm5/merchant.mvc?Screen=PROD&Store_Code=porsche-transaxle&Product_Code=D9-924-GTS&Category_Code=porsche-transaxle-924-aero-dynamics

Personally, I am holding out for the dual-projector version they are rumored to be working on.
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erstwhile owner of just about every 924 variant ever made

pocketscience · Posted: Thu Jun 18, 2009 3:28 pm Post subject:

924-76 · Joined: 05 Jun 2006 Posts: 1489 Location: Ontario, Canada

Thanks Dan, those looks great but they are a bit too expensive.

Does anyone have any idea how they attach the lexan to the bucket,
I don’t see any screws or other attachment hardware.
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1976 924 N/A ROW SOLD
1980 931S
1981 931 Part car RIP

tuurbo · Posted: Sun Jun 21, 2009 11:39 pm Post subject:

There is a cutout template you can use to fabricate backdrops yourself. Also, there are eBay cheapos you can use.

The one's Dan is citing are pretty high quality kits. The dual projector is really the cats ass.

I've been wondering about modifying the template to suit a dual projector system.
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1980 924 turbo, MSD, Meth. Inj, otherwise stock.