rebuilt engine wont turn - JeepForum.com
 
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post #1 of 4 Old 10-10-2004, 10:42 AM Thread Starter
mickeymountain
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Question rebuilt engine wont turn

I rebuilt an f head 134 (bored to .60, rebuilt the valve train, milled crank, new pistons, bearings etc.) I got it started and drove it around town for a couple days and it ran fine. Yesterday I got in it to finish breaking it in, so I got on the highway and was doing about 50 mph after a couple miles the engine started rattling and stalled out (power just went to hell) I pulled over and let it idle and it picked back up for about 10 seconds then the same thing only this time when I pulled over it died and I cannot get the engine to turn even with a breaker bar. Took the oil pan off and the pistons and cylinders look fine all the valves look ok I pulled the caps off the rods and mains and they look fine. I was wondering if the flywheel or pressure plate might have come loose I torqued the pressure plate to between 20 and 30 lbs., or could it be something else Im really stumped and dont want to pull the motor if i dont have to.

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post #2 of 4 Old 10-10-2004, 12:24 PM
jstltreat
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Sounds to me like you possibly spun a rod bearing and it welded to the crank. You possibly installed the incorrect bearings if the crank has been turned. Wish you luck.
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post #3 of 4 Old 10-10-2004, 08:57 PM
Cerveza
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Quote:
Originally Posted by jstltreat
Sounds to me like you possibly spun a rod bearing and it welded to the crank. You possibly installed the incorrect bearings if the crank has been turned. Wish you luck.
Ditto................................
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post #4 of 4 Old 10-11-2004, 05:06 PM Thread Starter
mickeymountain
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thanks for info

You guys were right it was a welded bearing, except it was the rear main not a rod. thanx
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