Well, some books suggest the CS was an attempt to boost 968 sales that were far from good back in the period by offering a discounted version of the car with less equipment. It is possible that extras like the LSD were left out by many original owners speccing their car on the cheap.
As time goes by ...

Didn't realize I was limited in the amount of photos per post. The splitter is in the last series of photos.


I see, thanks.
A long time ago I was told by a 968 turbo S owner (that Reiner knows well) that this splitter had been designed "soft" on purpose to "bend" at high speeds to increase ...

I can't see a splitter between the batwing and the bumper...?

Yes, stock valves here.

How much boost and how far high up have you pushed your engine yet?

Thanks. Whether for the sky or the fields in bloom I just had to stop. I drove like a granny on the way home, staring at the fabulous clouds... Between the staggering weather and the smooth jet-like performance of the car it was one of these rare driving moments where everything was perfect, and ...

It is beginning to dawn on me that what I took for a loss of traction mixed with the smooth/progressive nature of how the OS Giken LSD worked was in fact valve float kicking in at around 5500 rpm when running more than 18 psi of boost. Stock 16v springs were not going to perform otherwise I suppose ...

Thank you for reminding these basics of engine design.
I don't see the point in building an oversized engine if we can't put the power to the ground, at least on a track car that is supposed to perform in lap times. If a destroked engine can make the same power, and that would be with the same peak ...

Breizhtetics wrote: Thu Feb 12, 2026 1:32 amwhat should be the the optimal static compression ratio and boost to still get more than 700hp at 7000rpm ?

Well, how long is a piece of string...

Welcome and good luck with your project. It is quite a long way to get there but well worth it IMO.

If I remember right Duke made near 950 N.m on his last dyno run before heading to World Time Attack in Sydney where the block broke as suggested by photos showing the girdle had "pulled" one or two ...