Originally Posted by mike240
I need to replace my 258/4.2 carb motor in 90 Wrangler. Would like to know some experiences with those that have bought rebuilt crate motors. Rhino wants $1841, how are they? 4wd.com sells ATKs but I know nothing of them either.
any experiences would be helpful. I do not want to V8 it or put in other crazy mods. It ran great for 112k all original and that would fine for another 112K.
Is it a rod knock or piston slap that you are hearing? What is your oil pressure (hot)? If it is good when the engine is hot you may not have excess clearances in the bearings, but piston slap caused by poor clearances in the wrist pin area of the pistons. If you do not do high rev driving and it is piston slap that motor might have a bunch of miles left in it.
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