Turbocharging A 911 SC
 

G'day Team...

I have a few questions regarding turbocharging a 911 SC:

1. Where is the best position for the turbocharger oil drain, back into the engine?

2. Is it necessary to have a scavenge pump to pump the oil back to the engine from the turbocharger, since the turbocharger is low compared to the height of the engine?

3. Has anyone modified (removed material from) the standard CIS pistons to reduce the compression ratio (for use as turbo pistons)?

4. What is the best position for knock sensor(s)?


Regards

Mike (just getting into this Porsche engine debacle)

go to technical section (outside of engine building forum) and do a search. You'll find one very long and active threads along with many other. It will cover old installations to more modern theories with photos. Worth the time if even considering such an adventure.

Re: Turbocharging A 911 SC
 

The aftermarket turbo crowd is gravity draining the oil back into the lowest point on the left chain housing/cover. Works fine with the turbo raised up slightly. The scavenge capacity of the engine oil pump will provide enough suction to keep recirculating the oil ;)

Lots of posts/pics in the Tech Section... do a search for "gravity drain".

Some have put a "banjoe" on the drain plug

I have a huge thread on my project I will look for it and provide the link

http://forums.pelicanparts.com/showthread.php?postid=2904230#post2904230

Here it is and bumped it for you

Great thread ! No more additions ???

Mine drains into the drivers side cam cover and I have turbo, flat-top pistons.