Jaxon

If I give my 951 too much gas in first, second, or third my tires spin uncontrollably. <img border="0" alt="[burnout]" title="" src="graemlins/burnout.gif" />

Any suggestions on how to resolve? <img border="0" title="" alt="[Wink]" src="wink.gif" />

ian

Yes, give the car to me so you don't have to deal with such a nasty problem....

Q? do you have a limited slip?

Jaxon

No I don't.

I always wondered why I might need that.

I guess now I know.

It's kind of funny really. So much power that you can't keep the wheels on the road.

special tool

Wacha running for boost?

Jaxon

18 pounds of boost.

ian

at stock boost the non-limited slip cars are traction limited at elevated levels first gear is uselss...

Hopefully in a few months I'll have an LSD on the car and will finaly be able to launch it out of corners....

Jaxon

IAN, You are adding LSD?

guardsred951S

I think 16 PSI in first will just get you traction with 275's and LSD. 18 PSI won't and second and third are iffy.

Here's a few things to consider:

1. Tire Compound - a softer comound will be more sticky and resist wheel spin
2. Temperature - cold temps = wheel spin because it's easier for the tires to break adhesion with the road. I run 15 PSI and I can get wheelspin in first and even second on dry pavement with LSD.
3. Tire Pressure - less PSI = more tire touching the ground - more traction. Don't deflate them too much though....it's not good for radial tires.
4. Tire size - obviously, big honkin drag slicks will have better gip

I personally love the spin in first because anyone beside you just freaks when your tires snap loose at a couple mph and you go a little sideways.... not too much though!

But if your getting spin in second and third - you need more traction. But not too much though because you could break something in the drivetrain.

<img border="0" alt="[bigbye]" title="" src="graemlins/xyxwave.gif" />

Jaxon

guardsred951S:

I'm actually getting a real kick out of it. Passengers can't believe it when it happens in second and third.

Thanks for the input on how I can combat it...if I ever grow tired of it.

ian

</font><blockquote><font size="1" face="Verdana,Tahoma,Arial,Helvetica,Geneva">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva">Originally posted by Jaxon:
<strong>IAN, You are adding LSD?</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva">Yep, looking at what my options are as far as LSD's are concerned at the moment, there is not too much out there, and all are expensive, but hopefully I'll get it worked out.

W/ a k27, MAP, and 17 PSI of boost (where I'm going to try and run it) traction with the open diff would be miserable.

Jake951

Same problem here every winter. High-performance tires (in my case Bridgestone S-03's) just don't grip well in the cold. One solution would be to use an all-season tire for the cold weather, or even snow tires! Personally I don't drive my 951 enough in the winter to justify that, however.

Jaxon

Ian-
That's actually the configuration I'm running at 18 psi. I also have a Tial 46mm wastegate.

I drive it all of the time...unless there is snow on the ground. Cold does affect the traction.

IanM

LSD came stock on my '89 951. I'm glad I have it, and I must say wheelspin really isn't a problem except in first gear. Even then, I have to be trying to break traction, unless the roads are wet. When really giving it on the track, I have to baby the throttle on corner exits in second or third, but by no means is it difficult to control. And this with a car which with all my latest mods is pushing about 340rwhp.

sybelix

Yo guys; we are spinning wheels even with fifth gear..

Well we have snow and ice here in Finland..

The other day I was driving something like 70 mph,
hit the gas with fifth, and suddenly I had plenty to do in the cockpit <img border="0" title="" alt="[Wink]" src="wink.gif" />

And I do have LSD..

Alan C.

Take it to BodyMotion for your next rebuild. The problem should only last a few hours !!!!!!!!!!!!