[TR] TR4A PCV Valve

[David Brister]

Jerry,

My TR4A developed a serious leak from the crankshaft rear seal last year. 
Expert advice from the usual gurus suggested that as the engine became a bit 
more worn (in my case around the 60,000 mile mark) the crankcase would be 
getting pressurised from blowback past the piston rings. It was suggested 
that for starters I fitted the old TR3 or 4.   breather pipe to the 
crankcase.
This I did, not without difficulty, and the leak was reduced to negligible 
amounts.
I left the old PVC stuff in place to keep the correct look on top of the 
rocker cover. I don't think it makes any difference now to  the pressure in 
the c/case. I don't know about the emission regulations where you live but 
here in France I don't think they exist for cars of the 60's!

HTH,

David Brister
1967 TR4A
CTC 77785 O