I'm pretty sure my my #1 rod bearing has been spun.

I'll be rebuilding the motor sometime in the future, however, I was looking for a 'quick fix' if possible.

Could I drop the oil pan, drop the rod, piston and reinstall new rod bolts along with new bearings for the bad rod/piston ?

Any other ideas ?

 

bite the bullet and just do the rebuild

 

spinning bearins sux. my friend did that in his crx and his avenger both in like the same week.

 

How do you know #1 spun? You might be able to pull the #1 rod end cap. If rod and crank look ok, replace the bearing. But normally a real rod bearing spin will freeze the motor, wreck the rod and mess up the crank. It would take a full tear down rebuild if that happened.

 

By the sound its making (higher pitch metallic rap) and the frequency that sound occurs. If it was a main bearing, it would make a deeper sound.

I adjusted the valves to make sure they weren't loose. Did a leakdown
as well. BTW, its an H22A motor


[Modified by Mover, 11:58 PM 7/13/2002]

 

But why #1 as compared to #2,3,4? I'm sure it's not a spun bearing as the engine would only run a minute in that condition. Could be piston slap, worn out piston pin or most likely a rod bearing going bad. You need to fix it now before more damage is done. Drop the pan and check your rod bearings first.

 

If it was piston slap, I would have noticed it coming on. ie I know it would be worse when the motor is cold as compared to hot, but thats not
the case here. Its consistent cold or hot.

I'm guessing its # 1.... thats where I've tracked the sound to be originating from.

Like you said, a piston pin or rod bearing is probably going bad.
If I could take care of it by going thru the oil pan alone, that would be a bonus.


[Modified by Mover, 11:36 AM 7/14/2002]

 

With the engine running, pull spark plug wires one at a time. If it is a bad rod bearing or pin, the noise will go away when you pull the right wire. I once had this problem, isolated the bad cylinder, pulled the rod cap and the bearing fell out in 4 pieces (thanks to running nitrous). Replaced bearing and was good as new.

 

Thanks for the info.....do I have enought room to pull out the rest of the rod and piston from down there ?

 

NO...and if you could, you would never get it back in