RMS quick question
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Senior Member
Joined: Mar 2011
Posts: 590
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From: Sykesville, MD
Year: 1990
Model: Cherokee
Engine: 4.0 L
I have a '90 renix xj laredo with a np231 etc...do I have a 2-piece rear main seal? or one? and will swapping a '93 motor into it change it from 2-1 or 1-2??
CF Veteran
Joined: Oct 2011
Posts: 4,440
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From: Seal Beach, CA
Year: 1996
Model: Cherokee
Engine: 4.0 HO Straight Six
From what I understand, all 4.0s are a 2 piece. Don't quote me on that though. I had to do my rear main when i first got my xj back in september of last year and I couldn't for the life of me find a 1 piece. And I don't think that swap will make a difference, it should still be two pieces. But once again, don't quote me on that. I only have my personal experience of trying to find a 1 piece and not being able to
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