Shinchan
Member
- Joined
- Jun 28, 2018
- Location
- Lafayette, CO
Well, my Megasquirt/B20 project has come to a grinding halt. One of my exhaust valves sheared off at the lower retaining groove (I'm guessing it was defective, there is no sign of a broken valve guide) and dropped down into the block. Piston shattered the valve, but not before it made a pretty sizeable gouge in the piston. I haven't even assessed the head yet.
I'm trying to figure out next steps. Once I clean out the debris and carbon, I can get a good look at the piston. The block only has 5k on the rebuild, so I'm pretty frustrated.
So the question is, run it or replace the piston? I just put the engine in, so I'd rather not pull it. Is it possible to swap a piston from underneath, or am I just going to need to bite the bullet and pull the engine?
I'm trying to figure out next steps. Once I clean out the debris and carbon, I can get a good look at the piston. The block only has 5k on the rebuild, so I'm pretty frustrated.
So the question is, run it or replace the piston? I just put the engine in, so I'd rather not pull it. Is it possible to swap a piston from underneath, or am I just going to need to bite the bullet and pull the engine?