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crankshaft thrust bearing for scat crank
Posted: March 3rd, 2011, 5:10 pm
by rammit11
hi, just talked to my engine builder and find out that the 4.0 thrust bearings are not working on the scat crank. Has anyone else run into this ? would the 4.2 thrust bearing work in a 4.0 block?
Re: crankshaft thrust bearing for scat crank
Posted: March 3rd, 2011, 7:19 pm
by IH 392
The main bearing MUST match the BLOCK, the crank shaft is irrelevant, how is it "not working"??
Re: crankshaft thrust bearing for scat crank
Posted: March 3rd, 2011, 7:32 pm
by SilverXJ
Make sure he is putting it in the correct spot. Not at the rear, but on the #3
Re: crankshaft thrust bearing for scat crank
Posted: March 4th, 2011, 2:54 am
by Cheromaniac
SilverXJ wrote:Make sure he is putting it in the correct spot. Not at the rear, but on the #3
Exactly. Any mechanic who's not familiar with the Jeep inline six might mistakenly install the thrust bearing shell on the no. 7 (rear) main bearing instead of no.3.
Re: crankshaft thrust bearing for scat crank
Posted: March 4th, 2011, 2:38 pm
by rammit11
thanks guys , cheromaniasc and silver, you both are correct as to what happened. Talked to my guy today and he realized the problem and moved the thrust to the right place so now everything is right in spec.