highpowerdad
Petty Officer 2nd Class
- Joined
- Feb 5, 2020
- Messages
- 101
I picked up a VP 2006 5.7 GI motor with the intention of putting it in a project boat…it is in great shape, however… the engine coupler is “wobbling”. When I measure the runout of the coupler HOUSING (not the spline, but the outer metal housing, on the diameter, at the aft most edge, measured to a common reference point as I rotated the engine), I get .040” of radial movement, so .020” from “concentric” IF I take angle measurements, I get a change of about 0.3 degrees on the aft face of the coupler as I rotate the crank, so, again, an error of about 0.15 degrees from the normal, which, doing the trig, is the same .020” change, so it is a “Wobble”.
This doesn’t seem right, but I have no reference point as to what is good and bad…
SO, is this, ok? Will it cause vibrations, damage bearings? Is this possibly a bad coupler or, worse, a bent engine crankshaft? This engine was pulled from a boat that was in a road accident. The boat was not hit but came off of its trailer when the trailer went off the road into a ditch, the gimbal ring was broken from transom at the top pivot, I assume from the inertia. I had also assumed that with the U-joints and the rubber coupler in line, the engine crankshaft was protected, now I am not so sure. Any insight is appreciated.
Thanks
Scott R.
This doesn’t seem right, but I have no reference point as to what is good and bad…
SO, is this, ok? Will it cause vibrations, damage bearings? Is this possibly a bad coupler or, worse, a bent engine crankshaft? This engine was pulled from a boat that was in a road accident. The boat was not hit but came off of its trailer when the trailer went off the road into a ditch, the gimbal ring was broken from transom at the top pivot, I assume from the inertia. I had also assumed that with the U-joints and the rubber coupler in line, the engine crankshaft was protected, now I am not so sure. Any insight is appreciated.
Thanks
Scott R.