924Board.org

stv951 · Joined: 06 Mar 2005 Posts: 100

Hello guys,

I am currently building a 924 for Auto cross and track use. No regulation limitations, just a fan car (underpowered for sure

)that I want to be the ultimate on handling
Car is 80 completely stock
I have many many parts from 944s and 951s hanging around, and I am willing to use those.

I am thinking of putting a complete set of arms and wishbones front and rear from a 944 (83) I have bought for parts
I am then thinking of brand new shocks for the intended use.
What do you guys suggest ?
KONI ? Bilstein or LEDA ?
What would bolt on directly to the 944 arms ?
I also have a spare set of 968 Club Sport anti roll bars from my 951 in the garage. Is it easy to install these ?
I am planning to install (5 lug wheels) slick or semi slick tyres, so I will also need some camber plates for the extra camber that the tyres will need.
I have the following sets of wheels
14 4 lug stock (no way)
15 931 (5 lug)
16 928 S flat dish optional on 931s
16 BBS Split rims
17 7" Cup 1s
I think that 15s are gonna be fine with Toyo R888s for the anemic 125 PS the engine currently produces.

Any ideas and recommendations are more than welcome

Cedric · Joined: 27 Aug 2004 Posts: 2809 Location: Sweden

Do you wanna be fast or FAST?

There is a guy over here which is really good in race technology. He has worked with le mans cars, formula cars and currently working in WTCC. He developed a kit based on the leda dampers. Every car that has this kit goes like h*** and puts out awesome lap times. Although it costs a bit they do perform. Does it sound interesting ?
_________________
1980 924 Turbo
www.instagram.com/garagecedric/

stv951 · Joined: 06 Mar 2005 Posts: 100

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

Sounds like you're heading in the right direction...suspension & tires! Leda setup is definitely top shelf both in performance and cost, so if it's spare no expense, probably a good way to go. Are you looking at a double- or single-adjustable setup?

As for the wheels, you might want to reconsider using the 16" flat dish rims...I believe they're forged and probably the lightest of everything you list there. The 15" stock 931 rims are (obviously) smaller which is better for acceleration, so it could be a toss-up between the two.

On the subject of lightening, if you're switching over to a 944/951-based 5-lug setup, why not go with the aluminum control arms and trailing arms from a later 944 or a 951? They will save some weight for sure.

The 968 ARBs should be a direct bolt on to either the 944 or the 951 suspension.

For what you are hoping to do, I would think a priority would be reducing weight, something you didn't mention above. This topic is adequately covered elsewhere, so if you're comfortable using search, you should be able to find lots of info.

How about putting your location in your profile so we know what part of the world you're in? And also, the make and model of your car in your sig.
_________________
erstwhile owner of just about every 924 variant ever made

924RACR · Posted: Sun Nov 08, 2009 11:18 pm Post subject:

+1 on the LEDA suspension, if you can swing the cash! If not, I'd suggest the Konis due to the adjustability - very nice to have in an autox car.
_________________
Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

Dutch924-racer · Joined: 23 Jul 2007 Posts: 1081 Location: The Netherlands

Bilstein coil-over set (951 cup) far the best for the money!!

Koni yellow is more for 'fast' street use.
_________________
937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller

flosho · Posted: Mon Nov 09, 2009 1:14 am Post subject:

Ground-Control coilovers and camber plates. Some sways and turbo phone dials and you're all set.
_________________
[This Space For Rent]

stv951 · Joined: 06 Mar 2005 Posts: 100

So we have many options here
Leda
Bilstein escort
Koni yellows
Ground control
Can you please state approximate prices as comparison ?

What is the recommended size of anti roll bars ?
Will 16" tele dials fit ?

924RACR · Posted: Mon Nov 09, 2009 3:27 am Post subject:

stv951 · Joined: 06 Mar 2005 Posts: 100

sorry, I forgot
I am in Greece (Europe that is...)
I have the following cars
1x924 red 1980
1x931 white S2 1981
1x931 platinum S2 1981 no engine
1x944 parts car 1983
1x944 1983 black auto
1x951S 60k miles 350 PS IMMACULATE-I LOVE THIS ONE
1x987 2,7 Tipt
1xCayman S 2006
1x996 Turbo S 2005 White 8k miles pristine condition
1xFerrari 308 GTB on carbs red 1977

I can post pix if anyone is interested but I still dont know how in this site

stv951 · Joined: 06 Mar 2005 Posts: 100

Dutch924-racer · Joined: 23 Jul 2007 Posts: 1081 Location: The Netherlands

Why built a track car from a 924 if you have a 951??? Take the 951, less work !!!
_________________
937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller

9xx · Joined: 18 Jun 2006 Posts: 627 Location: Jarvenpaa, Finland

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

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

As light as possible, as close to the ground as possible. 15" will get you lower. Since the geometrics of the chassi is way off - compensate with hard springs. Try MOTON or Öhlins for superior dampers. LEDA is likely as good as. Reduce unsprung mass; rotors, calipers, wheels, dampers, springs, roll-bars, trailing arms... Reduce friction in the bushings - be carefull with polyethene. Get a wider track by using the late 944 A-arms and trailing arms, maybe even with early offset wheels..?

OT: You crazy Greeks

http://www.youtube.com/watch?v=CXWQP6JhMqQ
http://www.youtube.com/watch?v=j_nsisiemWc

Getting fed-up going fast..?

EDIT: For Autocross it might be a better idea to keep a softer - more forgiving suspension set-up, higher ridehight and a faster steering. It depends on the quality of the roads of course.
_________________
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