Hi,
I've been reading the messages about crankcase ventilation, PCV valves,
holes in oil fill caps, and am now completely confused. I have a 1275
(12CD-DA-H 9590) and simply have a hose coming from the oil separator that
goes up to a nozzle sticking out of the air cleaner housing. It looks to
me as if in the middle of the intake manifold there is a bolt plugging a
hole where a PCV valve might have gone, but I've never paid attention to it
because I assumed the hose goes up to the nozzle on the air cleaner.
I don't have any problem with my valve cover gasket leaking, or leaks from
the timing chain cover. But I read the "How to Build a Leakproof Engine"
by Les Myer in the Pdljmpr archives, and it seemed to indicate that a PCV
was needed to keep sucking the oil in. I do leak oil out the rear, and
wonder if this is due to not having a PCV valve? I'd certainly be willing
to put a PCV valve on if it would keep oil from coming out the rear.
The oil filler cap on my 1275 has a small hole in it, but the one on my
1098 doesn't have the hole. Is it best to keep the hole open (to let air
in), or is it best to use the one off my 1098, so that I'll suck air in
through the rear and keep oil in? I can't figure out when one should use
the cap with the hole and when to use one without the hole. Is it a
difference between 1098 and 1275 engines?
My car is put together out of many different parts. The car is a HAN6L
14277, so it looks to me like it originally had a 948 engine. Perhaps that
is why I have air cleaners with nozzles sticking out of them, since I don't
think the 948 had PCV valves. Correct?
So, should I keep the setup I have, or would a PCV valve help keep the oil
in? Does a PCV valve hurt performance in any way?
Thanks,
Ric Otte
62 Sprite Mk II
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