Imo000

That's where I put my Paxton SC.

soontobered84

Otto,
PM KillaV. He has a rear mounted turbo that he has had for several years on his S4. He can tell you the ins and outs of what you'll be dealing with

Otto Mechanic

No doubt, and to be honest I haven't yet given it serious study. That's the real reason I opted to abandon the 928 as a track machine in favor of the 944. There's been a lot more race engineering on the 944 than 928 so going with the 928 meant swimming upstream and, frankly, I'm just too old for that ****

But when one of these threads comes up I always read it and it always makes me pine for that stunted 928 parts car sitting in my shop collecting dust. I had great plans for it...

Otto Mechanic

That seems the most practical choice for the AT 928. There are several successful SC installations I've read about, but I think the SC is mostly a street rod solution. You'll notice how few SC designs show up in road racing, which is what I enjoy. They have reliability/longevity issues on the track that are hard to discount.

The car I'm working with will never be a street machine, it has no interior and the body work suffered dramatically from spending 20 years in a backyard in S. Florida. It's not going be a head turner, so it's the track or nothing. They shoot horses, don't they?

Otto Mechanic

Thanks, I'll send a ping. The S4 platform has a whole lot more attention when it comes to turbos, I've been in touch with several folks, including Herr Kuhn, on that subject. Unfortunately no one has been wiling to share their experiences with someone attempting to port them to the S3 so far, however I haven't bugged KillaV yet

MarkRobinson

Reliability has been great with turbo'd 928's. Fun stuff.

My race car will get converted this fall: looking forward to that.

Mark

Adamant1971

Hey Mark, do have any pics of the turbo and underside plumbing?

MarkRobinson

sure, email me and I'll send you some: MRobinsonPCA@gmail.com

cpayne

Please focus your efforts on the 85 turbo project and Coil overs before working on the race car. I'm looking forward to testing your turbo workand install the coil overs.

ptuomov

This might be useful in oiling a remote ball bearing turbos:

Bill Ball

As shown here:

http://norcal928.org/DIYSC/

Imo000

Hehehe, that brings back memories! thanks for posting the link for the build Bill.

One note: The intercooler project didn't work out, even the double core one was too much of a restriction (pressure) drop to worth the sacrifice. So it has been in the original, non intercooler form pretty much since the supercharger was installed about 11+ years ago.

MarkRobinson

Of course Charles, here's a photo from yesterday as I was there for four hours:

Mark

cpayne

Thanks for the update