Chuck, it's not completely sealed, there are 2 holes in it already. This may not be enough but Len says it's not creating extra pressure into the crankcase and he designed and poured it.
I've not been able to run a pcv as it sucked oil through it. That was in the valley pan, not sure if would be any different if it was in a valve cover. Also the problem only occurs at 3000rpm and above when I have higher vacuum, so would having a pcv make a difference?
I don't think the rings sealed completely and that may not be helping. The builder has agreed to rehone and fit new rings and try again, all at his expense.
I will ask him if it's possible to drill extra holes while it's apart just incase.
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69 Firebird
472, Bullet SFT, KRE 85cc, Victor, 850xp, TH400, TSP 9.5" 4800, 3.90 10 bolt, Viking DA rears, QA1 single fronts, 3558lbs. best to date 11.14@120
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