Wounded_Fighter Posted June 5 Share Posted June 5 Fired the parts cannon Parts cannon fired back. New crank, bearings, etc. Tq to spec 80ftlb, in tq order. Harmonic balancer bolt over-torques before crank will spin. ( no pistons or anything else on yet ) Plastiguage set at 0.003 all the way down the crank. Stumped. Thoughts? Help...? Link to comment Share on other sites More sharing options...
Spinnakerblue89 Posted June 5 Share Posted June 5 Just food for thought, are you certain it isn't an electrical or sensorial problem? What exactly happens when you try to start the truck, walk us through the things you see and hear, please. Link to comment Share on other sites More sharing options...
Wounded_Fighter Posted June 5 Author Share Posted June 5 Fairly certain it's not electrical 😉 Link to comment Share on other sites More sharing options...
Eagle_SX4 Posted June 5 Share Posted June 5 I don't have much experience with engine building. However it would help to find out which bearing(s) is causing the issue. Loosen all the caps and then torque one cap at a time and check rotation and figure out if it is just one bearing causing the issue or all of them. Link to comment Share on other sites More sharing options...
AZJeff Posted June 6 Share Posted June 6 20 hours ago, Eagle_SX4 said: I don't have much experience with engine building. However it would help to find out which bearing(s) is causing the issue. Loosen all the caps and then torque one cap at a time and check rotation and figure out if it is just one bearing causing the issue or all of them. EXCELLENT SUGGESTION. BTW, I assume the OP has slathered all the crank journals with assembly lube or, at the least, motor oil. Link to comment Share on other sites More sharing options...
speeding_infraction Posted June 6 Share Posted June 6 https://www.enginelabs.com/engine-tech/engine/explaining-under-and-oversized-engine-bearings-with-king-bearings/ Make sure your bearings are all the right size. Link to comment Share on other sites More sharing options...
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