As Robert has said, there are nuances to any machine work for any one engine assembly.
We are going through those nuances step-by-step in this thread that is slowly evolving:
http://www.forums.IHPartsAmerica.com/gas-engine-tech/1143-sonjamotor-lives.html
We are attempting to address every small detail and nuance regarding engine machine work and assembly using that thread.
And the same type info is being developed in this thread:
http://www.forums.IHPartsAmerica.com/gas-engine-tech/2468-152-rebuild.html
And this is not intended to be high end/blueprint stuff, but common attention to detail that anyone can do by simply following directions and avoiding shortcuts.
Nearly all standard machine shop practices and assembly details are common between the I-4 and sv engine series.
Yes...some rebuild components for IH stuff May be a bit more costly than for chryfordolet...but that is based upon the near complete lack of demand for those parts in the commercial engine building world today. But so what...this is special interest stuff! If ya wanna play with "normal" then start buying up '82 Ford, '83 dodge, and '78 chev pickups!
Ihon has worked very hard over the last year to bring in virtually every internal engine component for these motors and have the stuff on the shelf. We are having crankshafts reground nearly every day and can supply with proper bearing sets for whatever dimension the crank was ground to! We have new (sv) and regrind (I-4 and sv) cams in stock in many popular specs.
Cylinder head work for any ihc ohv head is commonly done in any automotive machine shop, nothing special there...all parts available.
The issues we discuss regarding valve train lubrication/valve train issues are always caused by lack of proper engine maintenance over the years and botched attempts at bring engine to life that have set non=-rotated for way too long.
Any myth regarding "cost" to build these engines is just that...a myth. Machine work costs in the commercial arena are machine work costs, and that depends upon the local market. It cost no more to bore an IH sv block than it costs to bore a 327 chev. It costs no more to have a sbc crank ground than it costs to have a 392 crank ground! It's virtually never necessary to replace the timing gears in an IH motor unless they have been damaged from improper removal. The timing set in a chryfordrolet needs to replaced every time the ignition and valve timing gets "weird"!
We can go on and on...but the bottom line is...this stuff we play with is "special interest", it ain't throwaway government motors shit.
