V6 rod bearings

You don't have to replace all of them unless you want to. 1st thing I would do is pull the pan and take a look. If it's only one or two sets, I would just replace them and be done with it. The main concerns me some though. If it's bad go ahead and pull the motor. As far as the crankshaft, as long as its still got enough meat left for the next step in bearing size, I would just have it reconditioned.

 

I myself would go for the the crank and matched bearings. Most likely you wouldn't have to worry about it again.

 

Conventional wisdom says that, with a cast crank, by the time you hear the rod bearings knock, the journals have been damaged. But conventional wisdom is not always right.

I trust your judgement that you're really hearing rod bearing knock.

I'm not a big fan of working under the car, looking up. Since I'd be working on my own schedule, I'd likely pull the engine and inspect it looking down at it. Considering that this is a CJ, and the motor comes out and goes in without a lot of hassle.

 

Unless things have changed, I expect you can get a crank kit for the same price as having your crank reconditioned plus bearings. Typically you'd mic the crank and get a kit one size under that, just so your core is acceptable.

 

Considering what all you’ve got going on I’d probably just pull the motor and go with the reconditioned crank and matching bearings. I’d probably still Plastigage the bearings though since your current problem is a tolerance issue.
"Never time to do it right but always time to do it over." ~Crusty old Engineer I used to work with.

 

Since so much about the motor is "unknown", I'd pull it and do the crank and bearings; then you know exactly what you have and be done with it.

 

Suck it up and do it right
Do it once the right way then you don't have to do it again soon
You know this, sounds like you just need someone to reinforce that
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don't scratch the paint...

 

:toetap:

it's not out yet ??????

 

you could prolly stand it up on end with blocks underneath for support or just turn it upside down I suppose, with carb etc removed

 

Might as well do a full rebuild since the engine is gonna be out...

 

don't forget to pull the temp sender.


and oil pressure line