924Board.org

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

Stock 924 na flywheel? 20lbs

Lightened 924 na flywheel? 17lbs

Stock 924 na trailing arm (loaded with drum brake parts)? 42lbs

86 944 na aluminum trailing arm (loaded with disc brake parts)? 46lbs

All measured by my bathroom scale, so accuracy is not guaranteed.

I forgot to measure the weight difference between the 23mm and 28mm torsion bars, but they were significant.

I'll try to see if there is a noticeable weight difference between the loaded axles (with CV joints and grease, etc).
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

That's funny, I thought those Al arms felt heavier.
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Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

They certainly did when one fell off the bench and landed on my foot!
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Ah yes. . ."nothing ever fell off the floor". . .

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Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

Yeah, but trying assemble one of these on the floor would result in much longer lasting pain than a simple bruised foot/ego

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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

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

I scrapped all the insulation off the inside of the car Weight diff ???4lbs
changed out the front and rear bumpers and shocks to euro bumpers and metal pieces difference about 50 lbs
Race seats would save a lot of weight.
I don't remember the weight of the horsehair pad in the trunk and the rear seat combo. I know I listed them all here in the past.
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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

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

Yep, the car has no front bumper, just the CGT nose. I actually should fix that somehow. Might just have to mock something up for safety's sake.

Most of the sound deadening is gone and the carpets are long gone.

No rear seat

Race seats, bolted directly to the stock mounting points.

Fiberglass nose, hood, front and rear quarters with a stock rear bumper.

Next step is to build a lighter sunroof panel and add lexan rear windows.

Still street legal though, just not street comfortable

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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

RC · Joined: 25 Mar 2007 Posts: 2637 Location: Australia

Be interesting to know the individual weights of the steel Vs ally arms, including the different stub axles and drive shafts required. Basically so we know the TOTAL weight difference between a steel arm 5 lug disc set up and an ally one. Don`t believe there would be much overall difference really.

Has anyone got any figures or some parts and bathroom scales to contribute to this thread?

Joes924Racer · Posted: Tue Mar 23, 2010 10:33 am Post subject:

Remember dont ever let them see you sweat..
Sound deadening and light weight seats really knock off a chunk of weight.. Getting a rear lexan hatch would would be the tits. for weight savings.

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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

ic932 · Joined: 11 Feb 2005 Posts: 1104 Location: UK

[quote="ic932"]nice comparison between the various 944 model years....

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86' 944 top, 88 944S left, 90 944S2 right.

86 944 15.4kgs
88 944S 16.7kgs
90 944S2 15.3kgs

Anyone got a 924NA assembly to compare weights?

gegge · Joined: 27 Jul 2007 Posts: 1124 Location: Sweden

If the 944 caliper and rotor weight 15,4kg I come to the conclusion that the alu traling arm is 5,5kg. (46 lbs=20,9kg)
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Carl Fredrik Torkildsen

924 turbo -81 Carrera GT RESTOMOD
924 turbo -80 Dolomite De Luxe
924 -85 DP kit, BBS RS, M030 and tuned engine
924s -86 Black on black turbo with Fuchs

Cedric · Joined: 27 Aug 2004 Posts: 2806 Location: Sweden

I have some parts like starter etc weigthed, can take a look at the list I have in the garage. Most recent is the flywheel on the s2 engine, according to the scales its about 5kg, 11lbs. Is there any lighter OEM flywheel ? But the pressure plate isnt as light

.

cookie cutter 7x15 wheel is 6.9kg, 15.2lbs. 16kg (if i remeber correct)including toyo r888 205/50 15.
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1980 924 Turbo
www.instagram.com/garagecedric/

morghen · Joined: 21 Jan 2005 Posts: 9095 Location: Romania

the ALU trailing arms are MUCH lighter than the 5x130 steel trailing arms.
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Supercharger and EFI kits
https://www.the924.com

gegge · Joined: 27 Jul 2007 Posts: 1124 Location: Sweden

The all-alu pressure plate is 3,1kg incl throwout bearing compared with stock at 6,3kg. Remember that this is weight distributed at least 100mm from the center, a major improvement since the stored energy is weight*radius^2!
I´ve got a billet S2 flywheel and it is 5,5kg and I can´t figure out why. The exact same dimensions and it has been machined to be lighter with holes. I was advised not to take of more material.
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Carl Fredrik Torkildsen

924 turbo -81 Carrera GT RESTOMOD
924 turbo -80 Dolomite De Luxe
924 -85 DP kit, BBS RS, M030 and tuned engine
924s -86 Black on black turbo with Fuchs

gegge · Joined: 27 Jul 2007 Posts: 1124 Location: Sweden