Just curious, my 951 never broke in 3rd gear when I had it, but it was a mere 360rwhp/345rwtq. At what level does it get fishy at 80 with 245's on the back?

Mark

 

Depends on the ambient temps and tire compound.

I've spun and hit a curb with SO3's because it was 10°F and I being careful and didn't even get on it at all.

 

lol, is very common, I had to switch to 275's in the back to avoid breaking the tires loose in 3rd.

 

Sounds like the infamous right foot defect to me. I think this problem raised it's ugly head for Porsche during development, so they built the NA cars instead.

 

your are getting too much camber and toe change's in the rear , i would go to a stiffer rear supension, reducing the amt. of squat . 245's are bit too small in the back anyway.

 

I have 1/4 degree camber in the rear, but am making about 440rwhp/tq. It was about 44 this am, I'm sure that helped as well.

I don't plan to keep this car long enough for wheels/tires: the newer one I'll get requires different offsets due to brake updates by Porsche.

 

Yeah but that 1/4 deg. does not include full squat under accell. i'm sure it is a lot more than you think .

 

I have custom Eibach springs and Koni's set on 3/4, it really doesn't squat much, and 928's dont squat at all like 944/951's: 928 rear suspension is completely different, inspired by a Porsche-design competition back in the '70's, FWIW.

My ''88 turbo S was all over the place with squat, really needed coil-over rears to replace the torsion bars...but never got to it before someone else had to offer me stupid-money for the car....I still miss it.

Mark.

 

ZING!!

 

Mine spins in 5th all the time... is this normal???

 

Only if theres ice hockey players swinging their sticks at you, screaming something about you just running over their puck.

 

And now for the numbers:
488rwtq with good tires and dry asphalt. See post #9 here for the details.

 

Mark - open or LSD?

 

I had traction problems on my car with 275s , I still have the same size but, went out and bought a pair of nitto drag radials NT555R. Not only I have never felt the car move forward in first and second spinning so hard these things work great in corners as well.

 

I knew it open differential