Cylinder Rattle/Noise
#22
Registered User
Thread Starter
Join Date: May 2003
Location: Ashburn
Posts: 294
Likes: 0
Received 0 Likes
on
0 Posts
#24
Registered User
Thread Starter
Join Date: May 2003
Location: Ashburn
Posts: 294
Likes: 0
Received 0 Likes
on
0 Posts
All four connector rod bearings were replaced. #1 was completely spun, #3 was on the way. The crankshaft was scored, but the clearances were still in the "acceptable" range.
Everything was cleaned up and running fine.
On my way to work this morning I believe one spun again. The "knock" is back. What am I looking at to get a new engine (cost, time, etc...)?
Thanks
Everything was cleaned up and running fine.
On my way to work this morning I believe one spun again. The "knock" is back. What am I looking at to get a new engine (cost, time, etc...)?
Thanks
#25
Moderator
Did they micro polish the crank? Sounds like they did not. So your bearing was within clearance, until the crank tore it apart due to micro imperfections.
If not, don't expect your engine bearings to last more than a week or two.
If not, don't expect your engine bearings to last more than a week or two.
#26
Did they crack test the crank? I've seen instances where there are cracks across the journal that open up under load/head and shave the bearing material away. The engine guys should use a magnaflux of similar to check.
If the crank was scored they should have ground it down to the first undersize to get the clearances back in spec. Ideally a nitride between grinding and polishing to bring up the surface hardness.
If the crank was scored they should have ground it down to the first undersize to get the clearances back in spec. Ideally a nitride between grinding and polishing to bring up the surface hardness.
Thread
Thread Starter
Forum
Replies
Last Post