My MGB is registered now as a '64 in California. In it's last life
in Oregon, it was registered as a '66, and had a Smiths PCV valve
somewhat crudely plumbed into the manifold--a small pipe nipple
drilled and tapped into the manifold, a piece of steel angle to hold
it up. I don't know if a '64 in CA at the time would have had to
have been retrofit for a PCV. When I got it, the car had the early
valve cover and front air cleaner for the non-PCV breather/vent hose
in place, but not the front tappet chest cover for a road-draft
crankcase vent. I am now running an alloy valvecover without a vent
tube (chrome cap has small vent hole.)
The angel on one shoulder is telling me not to mess with the way it's
set up for the sake of the environment, but the guy with the
pitchfork on the other one wants to return to greater originality...
Question is, how much venting does a pre-PCV engine need at the valve
cover? Would I need to add a fitting there, as it had originally, or
would a vent tube at the tappet chest be sufficient?
Chris Attias
'64 MGB
'84 Alfa Romeo GTV-6
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