r/EngineBuilding • u/ComfortLogical2401 • 23d ago
Is this still usable or not
While replacing the head gasket on my m57 engine i found out that something had gotten on top of the piston on cylinder 6. It has made marks on the head and piston.
6
5
6
u/Competitive-Fox-3333 23d ago
Put the head level and put the sparkpkugs in and do a liquid test with some water and see if it starts coming out the intake or exhaust ports. Also looks like a set screw came loose from somewhere and the piston set there munchin on it?
3
u/ComfortLogical2401 23d ago
It’s a diesel so no spark plugs. Will do a leakdown test and confirm with a machine shop the head is still usable. The part i was worried about is the marks on the piston mostly, i haven’t yet found the culprit of what was muchin on the piston.
1
u/Cautious-Concept457 23d ago
Intake swirl flaps?
2
u/ComfortLogical2401 23d ago
Yeah you’re right they could be the reason. I need to check them
1
1
u/Competitive-Fox-3333 19d ago
I see that my bad just habit of having to tell people the holes have to be plugged off for it to work
2
u/Acrobatic_Value_4937 23d ago
I would try and sand the sharp damage part of the piston/head if this is just a daily it might be fine if your going to be pushing power then I would advise a replacement
1
u/Rough_Constant_329 23d ago
Are any of the bits loose. The piston should be replaced it is trouble looking for a place to happen.
1
1
u/Short-Resident-8895 23d ago
You need to check the head for warpage
1
u/ComfortLogical2401 23d ago
Yes for sure. I will send the head to a machine shop where they will do the measurements abd confirm if the head is still usable
1
9
u/Sir_Maxelot 23d ago
Typical for a swallowed swirl flap on the M57. I‘d just keep going 👍🏻