Running without AOS?

[The Radium King]

i've also read that too much vacuum removes benficial oil mist from within the crankcase, so how would one size an external vacuum pump?

[blue2000s]

Originally Posted by The Radium King

i've also read that too much vacuum removes benficial oil mist from within the crankcase, so how would one size an external vacuum pump?

That's a new one to me. I'd be surprised if you could have too much vacuum.

To Sparker's suggestion of the vaccum pump, cars that spend alot of time at WOT or cars with positive intake pressure (turbo) need to use a pump for ventilation.

[sparker]

We've ran up to 25 inches of vac in a motor before, just makes it produce more and more power.

Sam

[The Radium King]

another question i have is regarding whether porsche has upgraded the stock aos in any manner. i've seen an aos part number that ends in '04' so can i presume that it is on it's 4th redesign. has anyone checked to see if the aos failures that occur have been with old ones, new ones, etc. it may be that just going with the latest aos solves all the problems.

[sparker]

Interesting point - would like to hear from people with failed ones as to which 'version' they had.

Sam