how to tell if there is a spun bearing
03-06-2006, 01:12 PM
#1
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how to tell if there is a spun bearing How can I see if there is a spun bearing? The block is not in a car and the heads are off. If I turn it will I hear anything? And if I start taking the pistons out and take the crank out can I reuse all of the bearings and parts as long as I keep everything in order? I bought this short block and he says it has a spun bearing but really has no idea where so I want to look around.
Another question is if I want to have the block hot tanked do I need to remove the crank and pistons? and everything?
Any suggestions would be greatly appreciated. Thanks.
Another question is if I want to have the block hot tanked do I need to remove the crank and pistons? and everything?
Any suggestions would be greatly appreciated. Thanks.
03-06-2006, 01:52 PM
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Might be mistaken, but you're gonna need to definately look at the bottom end. For the cost of it...I'd just go ahead and buy new bearings depending on how much wear is on the old ones. I mean why not since you're already gonna be in there.
As for hot tanking, everything needs to come out....pistons, rods, crank, bearings....everything.
As for hot tanking, everything needs to come out....pistons, rods, crank, bearings....everything.
03-06-2006, 01:56 PM
#4
Originally Posted by Fireball
pull the rod caps off, a spun bearing will be pretty obvious when you look at them.
Don't reuse any of the bearings upon reassembly.
Don't reuse any of the bearings upon reassembly.
03-06-2006, 02:28 PM
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the connecting rods themselves? Why do I have to replace those? I know there are some performance gains but since im not going for anything major powered wont they work just fine?
03-06-2006, 02:38 PM
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assuming the bearings are all fine *crosses fingers and prays to God* what size bearings do I need? Jegs doesnt really specify "ls1 rod bearings". And do the bearings just set right in or do they need to be pressed in? I guess I might as well change all of the bearings and do the cam bearings as well.
03-06-2006, 02:40 PM
#7
Originally Posted by 92zcamaroperson
the connecting rods themselves? Why do I have to replace those? I know there are some performance gains but since im not going for anything major powered wont they work just fine?
if you're not doing high RPM (higher then stock), and you're not running a major power adder, then yes, they will work just fine.
however, if theres any doubt that the rod bearings could have spun, have the crank and rods checked by a shop.
if they find something bad, they saved yuo money in the long run.
if they say everything is good, you can slap it back together with new bearings and be assured its correct.....
having it checked is not very expensive, and if the motor is out, and there is any doubt, its money well spent IMO.
dont be afraid of the bottom end, theres no magic in the bolts. they're just bolts, like the topend of the motor...
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03-06-2006, 02:43 PM
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Originally Posted by 92zcamaroperson
assuming the bearings are all fine *crosses fingers and prays to God* what size bearings do I need? Jegs doesnt really specify "ls1 rod bearings". And do the bearings just set right in or do they need to be pressed in? I guess I might as well change all of the bearings and do the cam bearings as well.
Definately have the rods and crank checked if there seems to be a spun bearing though.
03-06-2006, 02:53 PM
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im deffinetly changing the cam. Should I take the whole block in or can I just take the crank and rods in for inspection? I was wanting to spin to about 6200 and set the limiter at 6500. Id be putting arp rod bolts in and main bolts. BTW I cant seem to find main bolts on jegs just main studs.
03-06-2006, 03:57 PM
#12
it sounds to me like you need to consider taking your entire shortblock to someone and let them work with it.
just judging by your questions, i gather you don't know a lot about engines, which could lead to problems in the long run if you try to tackle this yourself.
just judging by your questions, i gather you don't know a lot about engines, which could lead to problems in the long run if you try to tackle this yourself.
03-06-2006, 04:15 PM
#13
Originally Posted by s346k
it sounds to me like you need to consider taking your entire shortblock to someone and let them work with it.
just judging by your questions, i gather you don't know a lot about engines, which could lead to problems in the long run if you try to tackle this yourself.
just judging by your questions, i gather you don't know a lot about engines, which could lead to problems in the long run if you try to tackle this yourself.
03-06-2006, 05:03 PM
#14
yeah, we've all made dumb mistakes rebuilding a motor at one point or another. i've just caught mine before they ended up costing me more $$$$.
this is just a bad motor to mess up on, it ain't like rebuilding a gen 1 sbc. this dog is much more money hungry.
this is just a bad motor to mess up on, it ain't like rebuilding a gen 1 sbc. this dog is much more money hungry.
03-06-2006, 07:07 PM
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Originally Posted by s346k
it sounds to me like you need to consider taking your entire shortblock to someone and let them work with it.
just judging by your questions, i gather you don't know a lot about engines, which could lead to problems in the long run if you try to tackle this yourself.
just judging by your questions, i gather you don't know a lot about engines, which could lead to problems in the long run if you try to tackle this yourself.
holy sh$t 