diagnosing

[OlderThanMe]

*edit* oops, forgot to finish the title..."diagnosing crank bearing wear"

I have looked in my haynes manual but there are no diagrams for the connecting rod/crankshaft bearings. The Haynes manual for Mom's Honda Odyssey shows different wear on bearings and I am afraid of what I see.

This is my #3 bearing and it looks like what the honda manual said is a warped crankshaft. Most of the other bearings aren't bad but this one is pretty bad. If the crank is warped then I don't want to put this motor back together with it. I would rather get the LD28 crank and wait to put a motor together. My question is what else can cause this kind of wear? there are signs of dry starting but I am not as worried about that right now as this wear.

 

Thanks

OTM in despair...

[kcelectronics]

Is that shell from the rod end (top) or from the cap (bottom)? if it is the upper bearing it could also be Detonation damage?

[OlderThanMe]

Well the carbs were pig rich so I don't think it is detonation. That is the bottom end bearing half If I recall correctly. you can see the top end half in the corner and it is not too bad. I'll go find some of my other pics.

here is the #3 part of the crank:

this is the other half of the bearing.

and the connecting rod without a bearing

This is one side of the piston:

and the part# on the bearing

[JMortensen]

Any good machine shop can straighten a crank. If you want the stroker do the stroker, but it isn't necessary to replace this crankshaft.

[OlderThanMe]

I just don't want to spend any extra cash on a crank I won't be using long term...the crank is still in the engine right now. I may get it straightened and rebuild this block as a backup or for a different car though. We'll see what I can come up with for parts.