Look at the pictures again, it wasn't a cylinder failure.
Pistons, sleeves, ROD BEARINGS, AND MAIN BEARINGS were perfectly fine.
Pistons, sleeves, ROD BEARINGS, AND MAIN BEARINGS were perfectly fine.
I'm going with a billet crank due to it's larger rod bearings.freak failure, I have to believe that. dont waste money on a forged crank just make sure it is balanced. the tell it was bad had to be noticible.....any gut that something was off?
david
It was an OEM motor built by Honda...i would have hoped that with a built engine the crank had been x-rayed/fluxed to verify. then again, if the part came off the production line anything is possible.
Everything was stock. Motor, pully, harmonic balancer, etc...Hi Stuntman--
I never did see an answer to the question of whether you had a lightweight crank pulley or if you had the oem or any other harmonic damper installed. Just curious.
the drive belts were very likely too tight
I've seen failures on stepper motor shafts from having the drive belt too tight which puts a side load on the shaft eventually snapping it of as it rotates. You would certainly get rotationally induced fatigue if the crank was somehow getting stress perpendicular to the rotational axis (rather than around the axis where the rod force would go). But it seems that would likely result in it being unbalanced as well.