ak diesel driver
6.5 driver
anyone ever see the 3 center main bearings spin on a higher mileage 6.5 without doing any damage to any other bearings?
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bearing ?
- Thread starter ak diesel driver
- Start date
3500GMC
What T F, over
Seen this in a BBC. Crank had too much runout- or at least 'developed' the runout somewheres along the line..
bison
Well-Known Member
Never seen any 6.5 spin a bearing,had one lock up after shutdown,lost all the oil trough a popped cooler line.
3500GMC
What T F, over
My original 93 6.5 died at 212k miles with #1&2 rod bearings spun.
Mains were full of shrapnel, didn't spin any, just roughed up the bearings.
Mains were full of shrapnel, didn't spin any, just roughed up the bearings.
great white
Well-Known Member
Nope.
I've seen spun rod bearings, but never mains.
I've seen spun rod bearings, but never mains.
littleboy
Can't quit now
Yep.... either your crank needs trued or your block needs line bored to true it.
great white
Well-Known Member
Is this the diesel depot take out?
ak diesel driver
6.5 driver
nope had (I'm assuming by the odometer) 175k
ak diesel driver
6.5 driver
well the other bearings looked fine, no appreciable wear
- Staff
- #11
Were these the origanal bearings or had they been replaced? I have seen this happen with sealed power bearings before within 500 miles of being freshened up.
ak diesel driver
6.5 driver
not sure but I do know the engine has been opened up before because the pickup on the oil pump was tack welded. Didn't look at the brand of bearing.
- Staff
- #13
Check the brand. I've used sealed power twice now as most parts stores have gone to them, and both engines lost the main bearings in the first 500 miles(one a 4.0L JEEP and the other a 305 chevy). Talked to a local machine shop and he said this is very common with them.
ak diesel driver
6.5 driver
pulled one of the other main bearings off and it was a GM bearing. Also I was wrong earlier I'd said it was opened up before but the oil pump turned out to be off the other engine that was in the shop
3500GMC
What T F, over
Do you take one bolt out a day or what?
Oh the drama!
Oh the drama!
ak diesel driver
6.5 driver
friend of mine owns a shop and it was in a 6.5 he took out, I just pulled the main cap today to look at it
racer55
Member
Any lifters come apart allowing the oil to dump back into the pan before it gets to the crank?
ak diesel driver
6.5 driver
not that was obvious