Possible To Reuse Main Bearings?

[PHATR32]

hey guys,

i was wondering if it was possible to reuse the old bearings in the bottom end of an engine. I.e if the beaings are in good condition, and the crank has been taken out, can it be just returned and torqued down?

what if i were get new bearings, can they just be installed?

a search showed up nothing,

thanks,

steve

[wrxhoon]

hey guys,

i was wondering if it was possible to reuse the old bearings in the bottom end of an engine. I.e if the beaings are in good condition, and the crank has been taken out, can it be just returned and torqued down?

what if i were get new bearings, can they just be installed?

a search showed up nothing,

thanks,

steve

Yes you can as long as you re-install them in the same journal that they came from .

If I was you , I would check the crank , measure the big end and main journals and measure the run out, if all O.K replace all the bearings ( they are very cheap).

[Duncan]

exactly. I just replaced mine when the motor was out $200 for rings and bearings from ACL.

[PHATR32]

thanks for that. visually the crank doesnt look too bad, it isnt scored or scratched etc, but ill still get it measured up.

steve

[2KR34]

thanks for that. visually the crank doesnt look too bad, it isnt scored or scratched etc, but ill still get it measured up.

steve

Think of the bearing and crank journal like a brake disc and pads, the bearing and journal will wear in some places unevenly thus will have lows and highs on both the journal and bearing surfaces, the perfect job is to machine the journals perfectly flat and use new bearings giving a uniform mating surface which gives maximum strength and oil distribution. If you have the crank out of the block then you may as well have it measured and likely linished which will return the flat surface if only slightly out so new bearings would be the go. If the wear is uneven or below limits then they will recommend grinding the crank and then you will need oversized bearings to make up for the undersized crank journal. Your machine shop will give you the advise and may be able to supply the bearings.

Good luck with the rebuild, Mark.