Today i was making a templet of the stock s5 non-turbo ports on some plexi glass and while doing the the secondairs i noticed that the outter oil seal overlaps the ports at the very end (or beginning ) of an intake stroke. It does completly overlap, but looked like 50ish% overlaps the ports



Is this a stock port configuration? It didnt look like the ports were modified but i could be wrong.



Are all series engines like this?



-Jacob

 

I Had this same question about a week ago, it was pointed out to me, that if you insert the outer oil seal and look at the actual scraper ( the part the contacts the housing, inner diameter of the outer ring) it has about 1/16th of an inch of clearence.

 

The outer edge of the runner will pass over the port edge, but the inner edge should not.

 

Ok thats what i see, just the outer and not completly



Thanks

 

look at your oil control ring, it contacts onlin on the inner lip. Look closely at you iron housings and you will sell the wear line.