George D

hot-j,

Thanks, but unless that *** comes with the setup...I'm moving on.

G

Thom

The crankcase breather must be routed to the inlet pre turbo otherwise there will always be too much pressure in the crankcase.

V2Rocket

where does that even go?
never seen it or the hose it connects to before.

bw993

The pressure relief valve is off the AOS hose and came stock on some '89 951 S models. It was also used in the 968 turbo RS in Europe. It supposedly was to relieve excess pressure from the crank, if the AOS hose down stream became blocked.

George D

Thanks, we'll check to make sure.

G

V2Rocket

Any interest in trying an external crank vacuum pump?
http://www.enginelabs.com/engine-tec...up-horsepower/

Paulyy

Interesting, but seems like that is a bandaid fix if there is an issue with a part

jerome951

Not really the intent of the crankcase vacuum systems. Just as the article states, it frees up some hp due to better ring sealing and less windage.

Common in the drag race community but not sure if safe to use in extended-duration road course racing.