If you found the perfect car to track but it was a C4- woud you consider it?

Is it done or just not worth the hassle?

 

Check the archives. There was a long discussion a few months back on tracking C4s.

 

Search is your friend...

Short answer - don't try to disable the awd... best to look for a C2 if you do not care for awd.

As to taking a C4 to the track, a few folks here have done so without issues... also search on that.

 

As I understand it there is no way to disable the front wheels on a C4, short of removing the AWD system and replacing it with a C2 transmission. A big job, and very expensive.

On the 993s they used a different AWD setup that makes it fairly easy.

Kirk

 

Thanks.

 

Avoid it like the plague if you want a rwd.

As has been pointed out there have been several discussions here and at Pelican about this.

Joel Reiser wrote a very informative 2 part article which is in Panorama
April & May 2007

 

Joel's article is kind of a band-aid approach to the conversion - not how I'd do it. It can be done: you need a G50 transmission, you need a C2 ABS brain, and some fabrication abilities to mount the shifter, and cut off the front CV from the hubs. It's really not that hard, but it takes a decent amount of dough to get the big pieces and pay someone to do the labor if you can't do it yourself. The ONLY reason I would recommend to do it, is if you owned a C4 Widebody - you could then keep the factory widebody but have the weight savings of no AWD. If you are looking at a narrow bodied C4, why bother? There are so many C2's out there. Don't buy it if two wheel drive is what you're after, or keep it as is and enjoy it.

 

Also, it's not quite the perfect track car if you feel you need to disable the AWD!! Find another one!!

 

Is it possible to do a adjustable awd system on the C4? bit like the 959's setup?

Rob

 

I think you mean make a system similar to the C4RS where you can manually adjust the locking torque of the differentials? It's not hard to set up using basic hydraulic master cylinders hooked up to the slave cylinders on the transmission. I don't really know why you would want that on a "road" car. In a dirt track for a rally it seems useful to have a "static" differential lock setting because the traction loss is pretty constant. The electronically controlled C4 PDAS system is great because it continously varies the locking torque to favor the current driving situation of that moment. Having a manually adjustable system might be ideal for a certain corner on a road course where a certain amount of tire slip occurs, but not the next... and not the time when you drop a wheel into the dirt and accelerate... the PDAS is able to adjust for the many different situations which occur for different corners or even same corner taken differently, which to me seems to be a much more favorable situation than a manually locking setup.

 

Isn't that what he did? except he replaced the 964 trans w/ a 993 trans.

Did you even read the article?
Hard to believe given your comments.

 

Hi Bill - no need to be rude! I should have been more specific: his "band-aid" is in reference to the way he bypassed the PDAS by simply plugging off the PDAS solenoid pump lines which means they still try to actuate the pump, but will not be able to; this will trigger a PDAS fault for a slave cylinder that is "not plausible" which will also disable the ABS. As I said, that is not how I would do it and not how I'd recommend doing it. It seems like a better idea to remove all of the PDAS equipment and splice in the C2 ABS brain and there you go, a complete conversion that keeps the ABS functional. From what I remember reading the articles, that's not how he did it.

 

As long as we are on the topic. (are we ? well maybe not but all the right people are now in this thread)

Do you think its possible to put the 993 6 speed C4 transmission into a 964? Or would it be a huge job?

 

It's genetic, can't help it


yes, it is at least straight forward.

try to get a copy of Reiser's article that I mentioned above.
He goes through all the necessary steps.

 

I read reisers article, although I have to admit it has been a while now.
He was going from a 964 C4 to a 993 C2, I was wondering about the 964 C4 to the 993 C4 swap.

kirk