If you don't want oil out the rear seal, think "suction" rather than just
venting. Collecting the restricted vents to a PCV to the intake manifold
will dry it up best.
Glen
> I've been advised about crankcase venting on my 1970 vintage 1275
> (12/DA/H29827) . I believe this year was before the air pump emissions
> junk
> cluttered everything up. My plan is to run a vented oil cap (Oil cap has a
> 1/4
> inch hole on the inside and air passes freely so I think this is an oem
> vented
> cap?. I will connect the carb "Y" pipe to the Timing cover canister vent
> on
> the front of the engine. Is this sufficient crankcase ventilation? My
> biggest
> concern is crankcase pressure pushing oil through the rear main seal.This
> is a
> freshly rebuilt engine. I've toyed with the idea of drilling out a non
> vented
> oil fill cap and installing a rubber grommet and pcv valve for increased
> venting. Are my concerns unfounded? Thanks.
>
>
> 1960 Bugeye
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