Fahrvergnuugen

So I have an amazing widebody '82 911. I just wish it were a turbo. The car currently has a 3.2 from an '86 swapped in mated with a 915 trans. The engine is very very sweet... completly rebuilt - every last nut and bolt is brand new.

<img src="http://darklotus.dyndns.org/media/forum_pics/pauls_cars/911/13.jpg" alt=" - " />

How different are the turbo motors? I'm assuming the internals are all different to handle boost... Is it a comon thing to turbo a motor like mine? Or would I be farther ahead to just find a turbo motor for sale and swap it in [or in that case, just find a 930 and sell this car].

I'm completly in love with my 911, but as always, I'm after the "go faster"

ccoleymd

First of all, I'm jealous! Tell me about how the car performs with the 3.2 compared with the 3.0? How hard and expensive was it to buy and install a 3.2?
I have a 82 911SC and also wnat more HP! I am considering buying a 930 or someone just told me that I could supercharge my engine for ~$3k. I don't know much about this, but would love to learn more if you know, or maybe this is an idea for you!
Thanks.
Chris
82 911SC

Fahrvergnuugen

This is an excellent idea....
I am doing research so I'll keep you posted if I come accross anything.

The 3.2 certainly does pull harder, but this engine has had a bit of work done to it.

A930Rocket

To supercharge a 911 is more like $5k for the kit from Supercharger of Knoxville I think and then add labor. Cha-ching goes the register. You can only boost it so much and have to watch your compression also.

Fahvergnuugen: Your motor looks great. I'd be torn between keeping it "as is" and turboing it. If the rest of the car looks as good as the motor, you can sell it and make a pretty good dent towards buying a 930. Late 70's-80's are good ones and don't be afraid of a ROW model. They have more HP, bigger fuel lines, fuel head and can cost less.

Always get a PPI before you buy one as looks can be deceiving, as any repair can cost serious money. But then again, you'll want more HP after awhile and it can cost serious money also.

Just a few thoughts.

Jim

Fahrvergnuugen

Well, I would probably build my own "kit" i just need to know what you need besides pulleys, brackets and piping. I can get a screw compressor at cost and then machine the necessary brackets.

But is it as simple as just stuffing air into the engine? How much boost can the stock internals handle?

I know on VW's VR6 motor, you can run 10lbs of boost no problem... any higher than that and you should lower compression and get tougher pistons.

btw here is an exploded pic of the screw compressor
<img src="http://www.bahnbrenner.com/bbmservices/01_screwcompressor_feature_.jpg" alt=" - " />

Geoffrey

Your stock engine comes with 9.5:1 compression. I would think that you could safely run 5-7lbs of boost as long as you have the proper fuel and timing set. Obviously you can remove the stock ECU and replace it with an aftermarket unit that is fully programmable, but you may also be able to have someone burn a chip based on some dyno time.

Alternatively, you might be able to install an adjustable rising rate fuel pressure regulator to increase the fuel under boost conditions. You may also be able to buy a MSD ingnition that has a retard feature for boost conditions. Obviously this route is not as good as the above.

A930Rocket

I thought about it for my '81 ROW SC and they said the rings/ring lands do not hold up to the pressure. They advertise in Panos and Excellence the Carrera Whipple and Paxton SC's I think, so it must be a bolt on system, albeit with custom made brackets, hoses, etc.

If you have the time and patience, it could work out. You just don't want to find out the hard way what does and doesn't work.

I doubt S/C Of Knoxville would give it away as proprietary info. Cal them and ask for some happy customers names for comments as you are interesed in their system. Once you have th enames, call them for specifics, i.e. info, manuals, diagrams, etc.

Just a few thoughts.

Jim