main crank bearings
Thread Starter
Burning Brakes
Joined: Aug 2002
Posts: 926
Likes: 2
From: chandler az
main crank bearings
Can the bearings be replaced with the engine still in the car? Is there enough room to get a torque wrench in there? The transmission guy says that he can move the crankshaft forward and backwards with a prybar and that the thrust bearing needs replaced.
Drifting
Joined: Dec 2002
Posts: 1,861
Likes: 4
From: Houston TX
Re: main crank bearings (brookman)
Can the bearings be replaced with the engine still in the car? Is there enough room to get a torque wrench in there? The transmission guy says that he can move the crankshaft forward and backwards with a prybar and that the thrust bearing needs replaced.
Racer
Joined: Mar 2001
Posts: 269
Likes: 1
From: woodstock, Ga
Re: main crank bearings (CorvetteZ51Racer)
its done all the time, loosen the main caps and let the crank drop a few thousanths and do one main at a time. Start the top bearing from the oppositse side of the tang and roll the crank to help it into place, you can also get a small tool to fit in the oil hole to help roll it into place, just some gentle coaching and a slight turn of the crank usually gets them into place. Not very hard to do, just need to be clean, do the same with the thrust the only way to change the thrust clearence is the cut the crank filet or worst case though not recommended is to take some material of the thrust side of the bearing,,, again this is not a desirabe method...invision the process of puting in a two piece main seal... be sure the crank is in good shape othersise its a waste of time. I have yet to see a marginal crank last very long before the bearing is wiped out again.... maybe others have had a different experience??? I dont see any reason to drop the trans? maybe I'm missing some thing
Drifting
Joined: Dec 2002
Posts: 1,861
Likes: 4
From: Houston TX
Re: main crank bearings (frank moran)
I dont see any reason to drop the trans? maybe I'm missing some thing
[Modified by CorvetteZ51Racer, 9:16 PM 4/19/2003]
Racer
Joined: Mar 2001
Posts: 269
Likes: 1
From: woodstock, Ga
Re: main crank bearings (scorp508)
agree, dirty and messy and not the best method, droping the crank out the bottom is also not a best method, in the end you may wish you pulled the engine where you can keep it all clean if you have a lift and the engine needs nothing else it may be an alternative.etc.... ps I meant that the bearings need to be rolled up from the tang side in the block....putting bearings in from down below is not too bad but usually you have more problems then a bearing can solve, unless its just a fresh up???
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Drifting
Joined: Dec 2002
Posts: 1,861
Likes: 4
From: Houston TX
Re: main crank bearings (brookman)
Was having what I thought was rattling in the torque converter. Apparently it was the crank moving front to back. Sound possible?
Thread Starter
Burning Brakes
Joined: Aug 2002
Posts: 926
Likes: 2
From: chandler az
Re: main crank bearings (CorvetteZ51Racer)
I was thinking along those same lines. My oil pressure is close to what a newer engine would be. 60psi at idle cold 38 psi warmed up. We are replacing the transmission again next Sat. I will have him show me what he said he had seen.