Re: What parts "typically" replaced in engine rebuild ?

Posted by Owen_Dyneto On 2009/7/11 8:06:11

This is really a question for someone like Jack Vines, but I'll take a shot at it. A quality engine rebuild on that era engine should typically include at least the following machine shop services: block boiled, magnafluxed for cracks, and decked, oil passages cleaned, cylinders bored and honed; main bearing saddles resized and line-honed; connecting rods straightened and big-end resized, heads resurfaced, valve guides replaced or installed, valve seats ground and hardened exhaust seats installed, valves resurfaced or replaced, lifter bores checked and oversized if necessary for OS lifters, rocker and rocker arms checked and arms resurfaced if needed, crankshaft straightened if needed and ground US if needed (or just polished), cam polished at a minimum, and finally a complete engine balance job on rotating and reciprocating parts. Final assembly should be oil pressure-checked.

Unless you've asked for a bargain job, replacement parts could be pistons, rings, wrist pins and wrist pin bushings, valves (possibly springs), stem seals and valve guides and seats where needed, main, rod and cam bearings, timing chain and possibily timing gears, possibly an oil pump, rod bolts possibly replaced, gaskets, seals welch plugs, etc.

Obviously the needs both in shop services and parts depends in part on the conditon of what is found and the quality of replacement parts vs. the condition of the original parts, and the wishes of the owner. Each individual job will vary to some extent. I'm really going out on a limb here but I'd plan for parts at $2000 and labor about $2500 for New Jersey prices.