In the last 18 months, I've built two TR engines so I'm speaking from actual hands on experience.
TR4A had the PCV but not the TR4 or earlier models. Manifold should have 37544 cast into it
The earlier models had a breather which is on the left hand side of the block - a sort of convoluted piece of 1" steel tubing.
Just check to see that is as clear as it can be
My other thought is that the oil pressure relief valve has stuck, a common occurrence on a TR engine causing the oil pressure to rise. What sort of reading are you getting on the guage. You should be getting no more than 65/75 psi at 2000 rpm. Not that I'd believe the gauge though so a master gauge is a good idea.
Arwyn
Last edited by Arwyn Williams; 02/12/24 08:36 PM.
