Last week I had post regarding my friend's 86 Toy P/U with a 22R. I had some time this week to remove the head to find the valves had touched pistons. Not by much, but enough to mark them. Apparently one of the chain guides broke, which caused the chain to skip a sprocket.
Now we're debating whether to buy a rebuild engine, or fix this one. I figure we'll have to replace the guide, new chain, new oil pump (while we got the front cover off), some minor head work, etc. It may be more labor intensive than an engine swap, but less money.
A friend who owns a shop, said he could get me a rebuilt 22R for $750, with a $50 Core, and a 1yr/12K mi. warranty. Others want $850-$1250 for a rebuilt 22R.
JW