heinrich

Was there oil in your throttle body?

Bill Ball

When I had the SC installed, I had the cam cover breather and the filler neck breather routed separately to atmosphere. At very high speed I would get tons of oil ejection out the filler neck breather hose but NONE out of cam cover breather. I don't think this is specific to SC'd cars. Even w/o the SC installed, I blow a lot of oil out at speeds 140-165MPH. So, I'm more interested in dealing with the oil filler than the cam covers. Tony and Louie have designed baffles to be inserted in the filler neck. I'm not yet convinced that these baffles help as the airflow out the filler breather at high engine speed is enough to carry the oil vapor right around any diversions and through any mesh condensing material.

heinrich

Very interesting data point Bill!! That's a first ... we've always heard it was the cam cover. Hmm..... Sabe Y-pipe, interesting.

cfc928gt

There was a little oil but there isn't any residue built up like the ends of the runners.

89 928 turbo

H-

I think that this is pretty typical in a HS run....I am running CC venting out the covers and the oil filler separately into two different catch cans, then venting to atmosphere....I think that under these high loads, Bill's comments are valid....in part because there is a ton of pressure coming out everywhere....the oil filler is like a high speed hair dryer....although, on Tom's car the amount of oil was less to nearly none when he organized it into his catch....keeping the oil level down just a tad also seems to make a lot of difference. I am measuring the amount of oil generated from my system (at 10-12lbs) into two different catches to see if there is a difference......am planning to measure pressure next set of dyno runs and will see what it looks like.

Lizard928

I have a fair amount of oil ejection from my engine as well. And this is the main reason I am going with a dry sump system as I dont see any other way that it can be properly controlled.