Member
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Join Date: Dec 2019
Location: SW Washington
Posts: 595
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Member
Join Date: Dec 2019
Location: SW Washington
Posts: 595
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I tend to pull the motor if I have to do a head gasket on a high mileage 3.4.
By time you get the heads off all you have left in the rig is the block with AC pump, oil cooler, engine mounts, starter, and bolted to the tranny.
My reasons:
Most often the oil pan seal is leaking. To pull the heads your 3/4 there so I just go all the way.
Most often I want to address the rear main. Might as well.
I've always done both head gaskets. Might as well.
I find it easier to do the work with the engine on a stand. The exhaust manifolds are easier (replacing studs), the oil pan seal is easy, cleaning is easy, ect.....
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Owned 82, 83, 87 pickup, 98, 99 SR5 4runner
Currently own a 98 SR5, 5spd, 4x4, e-locker, no sunroof. 2012 LTD with the normal options.
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