Quote:
Originally Posted by gottarollwithit
Just talked to my machine shop. While I might be able to resurface the head and run it, this would require removal of the prechambers, then likely shimming them up. Mechanistically, the shop would probably run a big fly cutter across the heads deck. No way to cut around the prechambers.
Also, supposedly these heads tend to develop a wavy surface after a lot of miles, so a simple gasket swap without resurfacing might not work.
Anybody confirm this?
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Having done MANY of these, I would NEVER put a head back on without giving it a rebuild. The cost for parts and the labor (even if doing it yourself) is not worth it without putting a rebuilt head back on. The valve guides wear, as well as the seals, so they should be replaced whenever the head is off. If the head has never been off, you can go with the standard thickness prechamber seals (done it many times), as long as no more than ten thousandths is removed from the head. If more, thicker seals are available. Yes the prechambers have to be removed. It is best to remove them with the head bolted to the block. Even though some say it is okay to reuse the old head bolts, again, it is not worth the $ to use the old head bolts, and find that they have stretched beyond their limit AFTER you get into torquing them down......Rich