are shortblock bearings re-useable?
04-21-2009, 11:23 PM
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are shortblock bearings re-useable? i'm about to pull apart my ls6 for a quick hone and re-ring job. blown #7 ring.
i'd like to re-ring all 8 while i'm at it, and gap all of them a little bigger.
i already pulled #7 out to see the ring damage.. fortunately the cylinder wall is still perfect.
1.) Can i pull the rods and mains apart to clean the block and re-use the same bearings, putting it back together since the engine was good and has under 50k?
Some say never re-use a bearing. Others say you can. ?
2.) Should i just order a set of std. repacement rod/main bearings and slap them in... and clearances should be within spec when i mic the bearing clearance?
3.)Adding ARP main studs/rod bolts?
I've read that since an lsx has a cracked beam rod design you can replace the rod bolts and be good without having to resize the rod, like on an older sbc/bbc?
thanks.
i'd like to re-ring all 8 while i'm at it, and gap all of them a little bigger.
i already pulled #7 out to see the ring damage.. fortunately the cylinder wall is still perfect.
1.) Can i pull the rods and mains apart to clean the block and re-use the same bearings, putting it back together since the engine was good and has under 50k?
Some say never re-use a bearing. Others say you can. ?
2.) Should i just order a set of std. repacement rod/main bearings and slap them in... and clearances should be within spec when i mic the bearing clearance?
3.)Adding ARP main studs/rod bolts?
I've read that since an lsx has a cracked beam rod design you can replace the rod bolts and be good without having to resize the rod, like on an older sbc/bbc?
thanks.
Last edited by Ryan72; 04-21-2009 at 11:29 PM.
04-22-2009, 12:14 PM
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+1 for re-ring, might as well since bearings are cheap and youre allready in there...good for piece of mind + it'd be more of a paid to take out after running and having to replace them anyways.
04-22-2009, 07:41 PM
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you can reuse them but why would you? I wouldn't even think of it unless the engine was just built..i mean like 50 miles ago. If you have it apart just replace them and be done with it.
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04-23-2009, 12:04 AM
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I just started a new thread trying to find an answer to this question...
Are standard sized rod and main bearings a selective fit, like older engines?
not sure if this pertains to ls1s, but I've read:
GM likes to use what is called a selective fit bearing and they vary in size anywhere from .0001"-.0009"
The only thing you could do at that point is to have the crank reground and then buy new bearings to match which would be .010", .020", or .030"
Can i just slap in a set of std. bearings, plasti-gauge the bottom end, and call it a day?
Are standard sized rod and main bearings a selective fit, like older engines?
not sure if this pertains to ls1s, but I've read:
GM likes to use what is called a selective fit bearing and they vary in size anywhere from .0001"-.0009"
The only thing you could do at that point is to have the crank reground and then buy new bearings to match which would be .010", .020", or .030"
Can i just slap in a set of std. bearings, plasti-gauge the bottom end, and call it a day?
04-23-2009, 08:54 AM
#10
If you've ever compared plastigauge to a dial bore gage and micrometer measurement, you wouldn't be using plastigauge on a performance engine. An old 76 Chevy pickup for chasing parts, yes. Performance engine, NO. There is too much variance between the plastigauge measurements and the proper measurements.
