911wings

Is there anyone who manufactures a reasonably priced turbo kit for the 964, and is it possible to take 965 parts and adapt them. i understand that the compresion (sp) would be off so low boost what have to be used.

Bill Gregory

Not a silly question at all, as we all long for more horsepower. Any turbo kit, if done correctly, will have new pistons to lower the compression. Frankly, if you want to turbo charge, just sell what you have and buy the real thing. Look at the differences, which include significant engine differences, suspension and brakes.

As an alternative, you might want to invesigate supercharging (one company in Tenn has installed them on 964's). Even with supercharging, you should upgrade, at a minimum, your brakes (caliper, caliper adaptor, rotor) to either 993 or Big Reds. Big Reds would require 17" wheels, 993's may need a thin spacer in front.

If I were adding blown air to the engine, I'd replace the rod bolts with ARP or Raceware bolts. The rod bolts were reduced in size starting with the 3.2L engines. When the heads come off, smart money replaces them on engines that will see high revs at the track. Similarly, since a blown engine puts more stress on components not designed for the additional pressures, swapping out the stock rod bolts eliminates one potential failure point.

The August 1999 Panorama has an article by Joel Reiser on engine options on our 964 (and 993, 996) engines, which you may want to track down. There are alternatives that will make a hp difference. For example, there's current threads about a Sportec 964 mod, and 9M has some good 964 discussion on their web site.

90C2_Cab

I found a company in southern cal that offers such a thing. I spoke to Todd the owner, he advised at a minimum new valve guides if you have 50k miles or better and low compression pistons(yours can be machined) but, not absolutely necessary. The actual hardware was around 6 grand. This included the turbo, intake manifold, exhaust pipe(uses stock manifolds), injectors, software for the Motronic, wastegate and a few incedentals. this kit is essentially the stage 1 upgrade minus the top end work. should make about 375hp. The wesite does not show this available as a kit, but, it is available. http://www.geocities.com/protomotive/964descr.htm

I'm real close to pulling the trigger, real close

--Eric

GP964

Same here Eric, I've know Todd for 3-4 years now and after playing with exhaust/header systems, custom chips and intakes, I'm almost to the point of giving Todd the green signal for the turbo on my 90 C2.
GP