Supercharging

jyl · jyl's Garage

Have seen various sources for supercharging 3.0, 3.2 and 3.6 motors. E.g. Supercharging of Knoxville, etc. Seem to have impressive bang/buck (=HP/$). Anyone have experience with such conversions?

carnut169 · carnut169's Garage

Jyl- welcome to the board. The best answer to your question is to perform a search under "supercharging", or "supercharger". There have been countless posts on this subject.

expat · 01-19-2002, 10:14 PM

jly,

If you want I can send you a spread sheet that I am creating that has a few details you MAY be interested in... AND...you maybe could help add to the info by providing me any info you may have.

Email me if you want to help/want to look at what I've got so far.

Cheers
Mark

markbj@hotmail.com

Jack Olsen · 01-19-2002, 11:14 PM

The thing I'd like to know is what the intended use of the car is. If it's a street-driven car, then Supercharging is a really attractive option.

What engine are you thinking about supercharging?

jyl · jyl's Garage

Thanks for the welcome - I'm trying to sort out which model to buy, hence am looking into "more power" options. Most likely I'll decide to look for a later 3.2 but I'm still thinking it over.

jyl · jyl's Garage

Oh, I'm sorry I forgot the first part of the question. Yes, it would be a street-driven car, not a daily driver (being in the SF Bay Area, I take mass transit much of the time) but the car would have to do occasional commute duty (unfortunately that often means stop-and-go freeway) in addition to weekend / pleasure trips.

Joe Bob · Joe Bob's Garage

Check out the V8 conversion threads....

Jack Olsen · 01-23-2002, 03:44 PM

Since you're in California, keep in mind that unless you buy a 73 or older 911, you're going to have to get it smogged, which (I believe) pretty much rules out the kinds of mods you're talking about. Somebody correct me if S.o.K.'s supercharger setups are CARB approved. I know TPC has talked about getting the approval, but I don't think they've done it.

But you're doing the purchase the right way -- research first, then buy.

If you feel you might be at all susceptible to tracking the car (and once you've done it, it's a little like crack cocaine), then also consider your mods in relation to that. Supercharging hits a dead end under protracted use, unless you've done significant work to strengthen the engine (or started with a Turbo case).

Joe Bob · Joe Bob's Garage

Knoxville claims that they are CARB approved on the 3.2 Carrera applications and up.....nothing earlier. So let's out the SCWDP guys....

carnut169 · carnut169's Garage

Just get a 930 to start with.

PeteBrown · 01-24-2002, 06:37 AM

I visited my local wrench, Steinel's Autowerks in Cleveland, and they are in the process of fine tuning a recent installation of a TPC supercharger on a '95 993. Eric said as a result of tuning it to run on pump gas, it dynoed at 310 hp at the wheels for an increase of 86 hp.

He said it was a good kit but needed one additional support for the belt pulley system.

Wayne 962 · Wayne 962's Garage

Does Knoxville have a website?

-Wayne

GeorgeM · GeorgeM's Garage

SoK does not advertise a website.

I've been looking into the supercharging option for my 3.2. I run 6-8 DE events a year, the rest of my driving is weekend nice weather type stuff on the street. I have enough cash in my car that I'll never get back enough of it to make selling it now and getting a turbo financially reasonable (I'd like to have them both, but that will never pass the wife test). I think I need to keep it for a while to get some more enjoyment out of my cash invested.

I emailed tham at SoKporsche@aol.com and got the info I requested from Paul Burch. He sent me a page long email along with a PDF document describing their three kits for the 3.2, the Paxton kit and high and low pressure Auto-Rotor kits.

I emailed TPC, but have yet to hear from them two weeks later.

I'm unable to access my webspace out here on the ship to attach a link and I'm having no luck attaching the file, so I'll try to email it to Wayne and he can try to make it happen. If anyone else wants it, email me at the navy address below and I'll send it to you.

Sean Hamilton · Sean Hamilton's Garage

Quote:

Originally posted by JackOlsen
Supercharging hits a dead end under protracted use, unless you've done significant work to strengthen the engine (or started with a Turbo case).

What does that mean - "Supercharging hits a dead end"?

WydRyd · 05-15-2002, 06:31 PM

If you S'C a 3.2, you already have the bottom end of the 930 turbo engine (same crank, rods, bolts etc). It is a very strong base to build upon. That's why I turbo'd my 3.2 Carrera

Obviously if you intend to run high boost (over 10psi), you're going to have to tear down the engine and fit stronger rod bolts, possibly head studs and reduce C/R), but for up to 10psi boost the base 3.2 Carrera engine is a solid platform.

Good luck...

island911 · 05-15-2002, 08:44 PM

I would choose the pre '81 SC. You will be starting with a lower C/R and a stronger bottom end than the 3.2. Those early SC's also have the bigger intakes.

WydRyd · 05-15-2002, 09:05 PM

True, but doesn't the SC have the K-Jetronic CIS also?

For a forced induction setup, you'd inheret the same defficiencies (sp?) as the 930's intake above a certain HP level, which is why 'serious' 930 engine builders trash the CIS stuff and go to the later Carrera Intake and Digital EFI.

Then again it depends on how much HP this guy wants I guess.