- Thread starter
- #51
sacrileger
Proven Member
- 288
- 43
- Jun 26, 2016
-
Orillia,
ON_Canada
Don't feel bad! It's happened to a lot of people then just don't post about it haha. Pull the head internals off and inspect everything. I'm willing to bet your valve guides are cracked too.
Yup, 4 guides cracked. One guide cracked in three places and was deformed. I find it impossible that this could be done by rotating the engine by hand or clipping the valves against the block as I was putting the head on. By looking at the pistons in post #16 and all that black oil over the piston head, I think some of it was preexisting. Some of the cracks did not look fresh..there was black oil and carbon in it.