I know I crossed a line somewhere, I'm a Triumph guy helping a friend with a AH100M,
The initial problem was low compression in #3, we pulled the head and oil pan and removed the piston. Found the upper two rings lined up together and a groove was lightly scared into the cylinder wall. After a quick hone to remove the groove and a new set of rings for the cylinder; we reinstalled the piston and closed up the oil pan.
We added synthetic oil 20/50 and then started the engine. oil pressure blew out the spin on filter. The guage showed 100+ oil pressure. We took the regulator apart and cleaned, reassembled and the same results. We replaced the reg piston and spring, same results.
Any ideas of what were missing?
The initial problem was low compression in #3, we pulled the head and oil pan and removed the piston. Found the upper two rings lined up together and a groove was lightly scared into the cylinder wall. After a quick hone to remove the groove and a new set of rings for the cylinder; we reinstalled the piston and closed up the oil pan.
We added synthetic oil 20/50 and then started the engine. oil pressure blew out the spin on filter. The guage showed 100+ oil pressure. We took the regulator apart and cleaned, reassembled and the same results. We replaced the reg piston and spring, same results.
Any ideas of what were missing?