1990-1993 964 Carrera Cup race car

[AlexHs3]

I'm trying to gather as much information I can on the first gen Carrera Cup race cars. Yet again, I've been lead to this forum and it's good depth of knowledge. I was once a member a very long time ago.

I work as a physics developer for a race simulator software company and we're looking at the possibility of developing a (simulated) 964 Carrera Cup for a customer. I'm in the early stages of gathering information. Anything I can collate at this stage is useful. Below is what I've gathered:

265ps
1st & 2nd gear longer
G50/10 gearbox
3600 cc
11.8:1 cr
40/40 diff
springs 4x as stiff as standard
ABS
anti-roll bars 24mm front, 18mm rear
ride height 55mm lower than standard
camber -3* front and rear, but adjustable
wheels 17"
8 inch front, 9.5 inch rear
Brakes from 1991 turbo
1120kg without fuel

cd: 0.32
FAs: 1.79m^2
CD X s = 0.57m^2
Lift: negligible

I'd really like to know anything in addition to the above. Any dimensions, weights or measurements would be ideal. For example, weight distribution, brake disc sizes, caliper types, master cylinder diameters, etc etc. I'm not even sure of the wheelbase. Is there a workshop manual that I could be pointed to? Or does anybody on this forum own one of the cars?

Thanks in advance,

Alex

[mbintx]

Try Rennlist...

[myfisch]

Hey Alex,

most Sspec depends on year.

If you have detailed questions, i can help.

The later cars from 92" are not so far from Euro Spec RS.

Special Suspension with monoballs all around and Special springs and Shocks also top Mounts.

Regards

[hda]

Originally Posted by AlexHs3

I'm trying to gather as much information I can on the first gen Carrera Cup race cars. Yet again, I've been lead to this forum and it's good depth of knowledge. I was once a member a very long time ago.

I work as a physics developer for a race simulator software company and we're looking at the possibility of developing a (simulated) 964 Carrera Cup for a customer. I'm in the early stages of gathering information. Anything I can collate at this stage is useful. Below is what I've gathered:




I'd really like to know anything in addition to the above. Any dimensions, weights or measurements would be ideal. For example, weight distribution, brake disc sizes, caliper types, master cylinder diameters, etc etc. I'm not even sure of the wheelbase. Is there a workshop manual that I could be pointed to? Or does anybody on this forum own one of the cars?

Thanks in advance,

Alex

From a video game perspective - it's basically a Carrera 2 louder and "more reactive".
Brakes are the same - there are extra welding points on the chassis and a free flowing exhaust.
.

[AlexHs3]

Thank you very much for your replies.

Originally Posted by myfisch

Hey Alex,

most Sspec depends on year.

If you have detailed questions, i can help.

The later cars from 92" are not so far from Euro Spec RS.

Special Suspension with monoballs all around and Special springs and Shocks also top Mounts.

Regards

Thanks for your offer. Would you be able to tell me any of the following:

What's the typical weight distribution front/rear? Even for the road car would be useful.

What spring rates and/or wheel rates are?


Thanks,

Alex

[Bill Verburg]

Originally Posted by AlexHs3

Thank you very much for your replies.




Thanks for your offer. Would you be able to tell me any of the following:

What's the typical weight distribution front/rear? Even for the road car would be useful.

What spring rates and/or wheel rates are?


Thanks,

Alex

For a Cup typical corner weights are
505 500
787 782
total 2574
that's w/ 150#driver, unknown fuel load, probably close to empty as it was post race

street C2
571 609
922 910
3012 w/ 180# driver and light fuel load

street spring rates lb/in are, wheel rates unknown but I would love to see that info
C2&4 '89-91 158f/189r
C2&4 '92-94 169f/189r
M030 150-200f/225-275r
RS 250-308f/375-508r
Cup200-600f/240-800r

[hichamaziz]

hi dear Try Rennlist

[myfisch]

If there a specialized questions, i will try to help. I have several Cup cars in Service and restored some of them to factory spec. there will come up one for sale from 91" with LeMans and 24h Hours Daytona history.

Regards

[AlexHs3]

Hello all.

Work resumes on this. Such is the nature of the industry we seem to chop and change a fair bit.
Everything posted so far has been very helpful, thank you.

Some of the next things I'd like to know may prove to be unattainable, but I'll try anyway.

- An engine dyno graph
- Roll centre heights
- A base setup, with toe & caster angles.
- Brake system measurements, such as master cylinder sizes and caliper piston dimensions
- Damper dynos?

[tjb616]

Not the most technical question, but I was looking for the length of the Cup car wheel studs as I have a set of the 9.5" rears and OEM PMS spacers I was looking to put on my car. Certainly I can find studs that would work, but the correct length would be a nice touch.

Anyone have that they can share?