Little 20R is a trooper! Can't hardly kill it. Make sure all your coolant lines are in good shape though, overheating the R series is the easiest way to find out the limitations. I drove my '83 about 3 miles with NO water in the system. After blowing the hose I was curious what it could take. The last 1/4 was the final nail in the coffin. I'm sure you won't go this far, but the stock internals are good for 7000RPM all day long, but 7500 is a short fuse. That's info for that missed shift.
Sirdeuce: thanks for all the helpful info!!! I got a question for you on reading the plugs.. When I initially pulled the plugs all of them had carbon build up on them.. (not a big deal just tuning and timing I'm thinking?) However the Cylinder 2 plug had a little oil on it. Is this cause for any concern??
My plan is to pull the engine put it on a stand and give it a once over. I was thinking even though the engine is "supposedly new" I would go ahead and replace the re-main seal, oil pan and valve cover gaskets.. Of course will I'm in there I'll check the bottom end and valve adjustment. Do you think I should be concerned about that oily plug on cylinder 2? Since I'll have the engine out I'm thinking it would be a good time to pull the head and have a look if I need to?
Also bear in mind I plan on running this 20r on Propane so......
