Possible excessive crankcase pressure.
#18
Rainman
Rennlist Member
Rennlist Member
http://ww2.justanswer.com/uploads/po...052311_944.gif
It's 48/49. Trust me, it's not relevant, but my car didn't have this factory piece, now it does. Who knows, if this $15 part helps, I'm grateful.
G
It's 48/49. Trust me, it's not relevant, but my car didn't have this factory piece, now it does. Who knows, if this $15 part helps, I'm grateful.
G
never seen it or the hose it connects to before.
#19
Rennlist Member
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.
#20
Drifting
Thread Starter
#21
Rainman
Rennlist Member
Rennlist Member
Any interest in trying an external crank vacuum pump?
http://www.enginelabs.com/engine-tec...up-horsepower/
http://www.enginelabs.com/engine-tec...up-horsepower/
#22
Professional Hoon
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Join Date: Jan 2010
Location: Melbourne, Australia
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Any interest in trying an external crank vacuum pump?
http://www.enginelabs.com/engine-tec...up-horsepower/
http://www.enginelabs.com/engine-tec...up-horsepower/
#23
Drifting
Common in the drag race community but not sure if safe to use in extended-duration road course racing.