turbo or supercharger on older motors?

[bb]

Has anyone added a turbo or supercharger to an older motor, 2.2 - 2.7?
Or has anyon heard of someone who did it, or failed miserably while attempting it.

Why can't it be done?

[Adam]

bb,

There's no earthly reason why it shouldn't work. I've been mulling over it for about 12 months now and I'd love to try it. Using a 2.7 is dicey, as the crankcases weren't up to high levels of real heat (my car has tougher spec cases, though) They frequently pulled headstuds with thermal reactors fitted and a turbo is likely to get a lot hotter than a reactor.

The compression is low enough to sustain a moderate boost figure of around 5-6 psi. Find a decent heat sheild, plumb in an intercooler and let her rip! I don't see why a moderately boosted turbo 2.7 shouldn't produce 250bhp.

If you did start with a 2.7, I'd make sure the motor was nice and fresh!

Good Luck

------------------
Adam Chaplin
1976 Porsche 911 2.7 Euro
My 911 Website
Pelican Gallery Page
Porsche Owners Gallery Page

[This message has been edited by Adam Chaplin (edited 08-31-2001).]

[911pcars]

Turbocharging is probably the best bang for the buck, but as Adam suggests, make sure the engine is up to the task.

If you add 75-100 hp/50-100 ftlbs torque to an engine, regardless of cams, intake, exh. etc., engine life is compromised. The base 130 hp, 2 liter, 911T engine is relatively unstressed and lasts a long time. The same engine with 300 hp, 250 ft.lbs torque will not last as long.

Moderate amounts of boost should be fine on a healthy engine.

Sherwood Lee
http://members.rennlist.org/911pcars

[bb]

what about some of the "non porsche" turbo's that I have heard some people are putting into their 914's? has anyone here done something like this or heard of it being done? I don't want a race car but was just wondering if this would be an inexpensive way to put some more zip into my 2.2 that I have just rebuilt.