[TR] TR3 Engine Breather Pipe, thanks to all

[David Brister]

I recently fitted a TR3 Breather pipe to my TR4A having been advised by 
quite a few people that that would help cure the oil leak from my rear crank 
bearing. It increased with speed so that at 80mph in 50 miles or so it 
disgorged perhaps a pint and a half onto the underside of the chassis, 
(particularly on the right side) and onto the rear bumper and boot lid 
bottom. The theory being that crankcase overpressure due to blowback past 
the rings was forcing oil out of the scroll seal at the back, and the TR4A 
venting system was grossly inadequate particularly for an engine with 70k 
miles or more.
Have now had the opportunity to test the new breather mod and  now report a 
very dramatic improvement at 80+mph. Have'nt measured figures yet but after 
100 miles at motorway speed the sump has needed no oil adding and the back 
of the car has stayed completely clean.
So thank you all who chimed in with their experiences and advice, you know 
who you are.
Hope this may be useful to someone.
This list does what the  UK BBC was originally chartered to do, viz: Inform, 
Entertain and Educate. I look forward to many more years of I E and E with 
it!

David Brister
1967 TR4A 


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