Bearing clearance issues... Help Please
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Joined: Apr 2007
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From: JunkYard
Bearing clearance issues... Help Please Ok so I started assembling my rebuilt 5.3 clearances. Looked ok so I re-cleaned everything installed the Main bearings then lubed them and the crank ... Crank was polished and Is withen factory spec. I used ACL duraglide Std Bearings. Tourqued everything to spec and turned the crank a revelotion or two between steps to make sure it was good. By the time it was all torued down it stoped spinning... I take it apart 1 cap at a time to see if I am having an issue at 1 specific cap... No such luck...
#1 bearing looks like it had something under the coating.
It lightly scored the crank. I am gonna see if They will warranty the bearings And try and switch them for something else like Clevites.... I am gonna take the crank down and have it looked at agian
Any one Have any Idea's or possible suggestions???
#1 bearing looks like it had something under the coating.
It lightly scored the crank. I am gonna see if They will warranty the bearings And try and switch them for something else like Clevites.... I am gonna take the crank down and have it looked at agian
Any one Have any Idea's or possible suggestions???
Thread Starter
Joined: Apr 2007
Posts: 9,716
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From: JunkYard
Well I mic'd The bearing journals on the crank and checked for out of round and taper. I also checked the stack up on the bearing thickness and the bore size... All withen spec.
I also use plasti gauge to verify that I don't have a bearing that is not seating properly or something... I have actually caught that on other motors since I verified with Plasti Gauge...
I also use plasti gauge to verify that I don't have a bearing that is not seating properly or something... I have actually caught that on other motors since I verified with Plasti Gauge...
From the sound of your description, it sounds like you are running out of clearance or it is definitely too tight. If the crank is within spec, then the bearings seem to be suspect. Is it worth trying the olde bearing just to see if you encounter a similar problem?
Thread Starter
Joined: Apr 2007
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From: JunkYard
I called my suppler and had them order me another set. I told him I was having trouble with them. I think my cost is only like $30-$40 on the mains. Either way. I am going to also try and go to my buddy's shop so I can chuck up the crank and check it for run out. I am thinking these particular bearings are just to tight. I have Used these same brand of bearings in other types of enginge rebuilds and have never had any problems untill now.
I guess If worst comes to worst and I can't remedy this with another set. I will try another brand. I would just hate to have to order them through a GM dealer because there so expensive through them... At the very worst I guess I could just take it back and have The crank turned. Sucks because Everything is already ballanced to the new pistons and what not...
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Verdad Gallardo Thread Starter
Joined: Apr 2007
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From: JunkYard
Well, I have another set of bearings coming so I will Double/tripple check that this time.... Any one have an actuall picture I can refrence???
Thanks dude!!! I didn't even think about that possibillity. It could certianlly cause a similar issuse...
Thread Starter
Joined: Apr 2007
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From: JunkYard
Its all wraped up and tucked away right now. I am thinking I lined them all up with the numbers on the same side. #5 is supposed to go 180 with the long side of the cap edges facing forward right??? The #5 would be on the other side from 1-4 right???
Thread Starter
Joined: Apr 2007
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From: JunkYard
I am thinking for some reason I accedentally had all the numbers on the cap facing one side not reliseing the that would put the rear cap facing in the wrong direction... 
