924Board.org

[FelixP]

Hi all,

I've been trying to get my head around this. I have a ROW 1988 924S. It has the late offset alu suspension. My project idea is to make a "back date" 924, so I want to take the latest 924 and the benefits that brings but go for styling cues more in line with the 70's cars.

I am going to lower the car and have purchased some early offset split rims that I want to fit. Of course, they poke out the narrow arches with the early offset.

Before lowering the car I was hoping to source the parts to swap it over to early offset and do the lot in one go.

So what do I need for the front? Early A arms, hubs, spindles & struts? What about the rear?

Thanks for any help!
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1982 924 Turbo with Carrera GT kit, TMIC & DITC

[Carrera RSR]

Fit 924 turbo front and rear steel arms. You'll need the shorter drive shafts. Should give you additional 15-20mm for the early offset wheels
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1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252

[FelixP]

Would early 944 hubs be the same? They're easier to come by. Rears aren't too bad, it's the fronts which are an issue.
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1982 924 Turbo with Carrera GT kit, TMIC & DITC

[Rasta Monsta]

Early and late 924 front control arms have the same geometry. The only difference is sway bar mounts.
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Toofah King Bad

• WeiBe (1987 924S 2.5t) - 931 S3

[FelixP]

So I would just need early hubs to pull the front wheels in?
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1982 924 Turbo with Carrera GT kit, TMIC & DITC

[morghen]

[Rasta Monsta]

[ideola]

924S does not have late offset at all. Don't confuse the fact that it has alu rear trailing arms with the offset. "early" offset refers to "early" 944 series, NOT "early" 924.

The problem is that "early" and "late" offset are quite misleading as descriptors because the fender widths differ between the narrow body 924/931/924S and the 944. To illustrate, standard offset on the narrow body is 52.3/53mm, while standard offset on the early (pre 85.5) 944 is 23.3mm. The early 944 and the 924/931/924S all share the EXACT SAME control arm / hub / spindle / strut geometry. But the wider fenders on the 944 mean that a lower offset wheel is required to fill the arches.

As for the rear setup, the 924S's alu rear trailing arms end up with identical offset to the 924/931 (5-lug) and early 944 steel trailing arms when used with the OEM 22mm spacer. (Incidentally, the 86 951 shared this oddball rear trailing arm / hub set up yielding an "early" offset). All subsequent 944s when to the "late" offset rear hubs, as well as the "late" offset front alu a-arm / hub / spindle / strut assembly.

So, the great thing about all of this is that the narrow body cars can use "late" offset wheels up to about 8" wide / 62mm offset with essentially little modification (perhaps some fender rolling depending on the exact setup). But you cannot use "early" offset 944 wheels (i.e. less than 30mm offset) on the narrow body because the wheels will stick out too far and rub on the fender.
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erstwhile owner of just about every 924 variant ever made

[FelixP]

Thanks Ideola, that clears it up!

That's a shame since I really like the wheels but I imagine putting et23 6.5in wide wheels on is not a good idea then. Even with negative camber and some narrower tyres it's going to ruin the handling/stress the bearings too much?




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1982 924 Turbo with Carrera GT kit, TMIC & DITC

[morghen]

Dont give up. I ran HEAVY steel 35mm spacers on the fronts with 9" wheels and 225 tires for many years and i had no bearing wear. I took that setup to the Nurburgring, on the Nurburgring, back home and then 4 more years of GT-ing, even ran 260km/h with that setup. Bearings are strong.

Read what i wrote you, stop playing silly and look for some narrower 911 hubs or try to get a narrower lip for those wheels.
Also you could spend your money here and get the right hubs off the bat:

http://www.design911.co.uk/fu/prod126691/Front-Wheel-Hub-Porsche-944---968---9products/

Measure the actual hub, substract the amount you want the wheel to go towards inside and give them a call.
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Supercharger and EFI kits
https://www.the924.com

[Cedric]

It wont ruin anything, just the geometry a bit, which makes the steering a bit heavier. We are many who run 7"et 23 up front on the narrow body. It works fine, but require maxed camber up front, around - 2.9 degrees. Which is fine for track but could be a bit to much if you do alot of road miles.

Its so easy to change camber, up front at least, try it out and see how it looks. On you pic it looks like even less than et23, but maybe the eye gets tricked.
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1980 924 Turbo
www.instagram.com/garagecedric/

[Cedric]

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1980 924 Turbo
www.instagram.com/garagecedric/

[Carrera RSR]

Felix, I'm running 7x16 ET23 so your 7x15 ET23 should just nip under the wings with lowering and neg camber. If purely for looks you may want to consider a 195 or indeed 185 width front tyre but don't go too stretched.
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1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252

[morghen]

Also, wach this guy nip 8" wheels ET28 under the narrow fenders

https://porsche924.co.uk/forum/viewtopic.php?f=24&t=15930&start=140
_________________
Supercharger and EFI kits
https://www.the924.com

[FelixP]

Worked out fine! Thanks for the help!






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1982 924 Turbo with Carrera GT kit, TMIC & DITC