C4 or C2?
#32
Drifting
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
The Front Diff. (C4 only) takes an extra 30 minutes to drain and fill with a quart of Delvac, + another beer for me.
#33
Nordschleife Master
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
That's a nice comparison (same driver/different 964). In track driving terms I would say those differences are quite significant. More so in racing terms. After 10 laps the RSA would be 20 to 30 seconds ahead of the C4 depending on the track.
#34
Racer
Join Date: Nov 2010
Location: Annapolis, MD / Media, PA
Posts: 456
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Not everyone builds a track car out of their 964.
I think the only numbers missing is the 0 to 60 and the 1/4 mile times.
It's nice to have accurate data to compare the 2 versions.
I think the only numbers missing is the 0 to 60 and the 1/4 mile times.
It's nice to have accurate data to compare the 2 versions.
#37
Three Wheelin'
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Seriously - this system was developed on the 959. They spared no expense figuring out how to make it right.
All I've had on it in 5 years have been routine fluid changes. I have all the service records for my car almost back to the beginning, and no evidence that it ever gave the PO's a lick of trouble.
Buy the best car you find, irrespective of C2 vs. C4.
All I've had on it in 5 years have been routine fluid changes. I have all the service records for my car almost back to the beginning, and no evidence that it ever gave the PO's a lick of trouble.
Buy the best car you find, irrespective of C2 vs. C4.
#38
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
My buddy an RSA.
We run the blue run group. I am by no means a race car driver!
At Tremblant I am 1 second quicker when it's dry...We have no idea in the wet because he doesn't get on track.
![evilgrin](https://rennlist.com/forums/graemlins/evilgrin.gif)
I'd say
![order](https://rennlist.com/forums/graemlins/order.gif)
#41
Pro
Join Date: Jan 2005
Location: St. Albert, Alberta, Canada
Posts: 696
Likes: 0
Received 2 Likes
on
2 Posts
![Thumbs down](https://rennlist.com/forums/images/icons/icon13.gif)
of course testing fate, as soon as i post in this thread i find a problem.
the transmission seals for both differential locks are leaking. transverse not so bad but the longitudinal is about a drip every 3 seconds. 2 foot wide puddle in middle of garage![ooops](https://rennlist.com/forums/graemlins/icon501.gif)
Now to start a new thread and find out the correct part numbers for those seals (search revealed nothing about tranny seals, just the lock cylinders which ARE expensive).
the transmission seals for both differential locks are leaking. transverse not so bad but the longitudinal is about a drip every 3 seconds. 2 foot wide puddle in middle of garage
![ooops](https://rennlist.com/forums/graemlins/icon501.gif)
Now to start a new thread and find out the correct part numbers for those seals (search revealed nothing about tranny seals, just the lock cylinders which ARE expensive).
#43
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I was chatting with the porsche shop in my neighborhood about my C4 and he had nothing bad to say about the awd systems - he says he doesn't see the 964 C4s being any more troublesome/maintenance heavy than the C2s he sees in the shop, which was definitely good to hear. The awd is great in the wet - which is often in seattle and I've yet to have a problem with it in a bit under a year of ownership.
I guess the only thing that be a ding against the C4 (aside from any subjective thoughts on which one drives "better") is that a clutch replacement in the C4 is ideally an engine out procedure, whereas the C2 can be done with the engine in. I have read a few threads though of people doing their clutch with the engine in by just loosening the engine from the mounts and lowering it a bit for clearance. Would be a silly reason not to get a C4 though, being that by the time you need to replace the clutch, there are plenty of things that would be easier serviced with the engine out anyways.
I guess the only thing that be a ding against the C4 (aside from any subjective thoughts on which one drives "better") is that a clutch replacement in the C4 is ideally an engine out procedure, whereas the C2 can be done with the engine in. I have read a few threads though of people doing their clutch with the engine in by just loosening the engine from the mounts and lowering it a bit for clearance. Would be a silly reason not to get a C4 though, being that by the time you need to replace the clutch, there are plenty of things that would be easier serviced with the engine out anyways.