220 is good
I thought u were talking CR. LOL
I thought u were talking CR. LOL
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Longblocks and planning
- Thread starter Speedmaster
- Start date
I have one low cylinder at 205, the rest are 215-220. I suspect I have sticking rings and/or sticking valve on one cylinder.
220 is excellent, especially for an engine with 300k+ miles on it. On the NSX, 215+ (virtually brand-new engine compression) is a very healthy and well-maintained engine; 195-215 is good; 180-195 is fair, and below 180 is within Honda's "OK" spec, but usually a sign of poor maintenance (lack of oil changes) and/or forced induction/nitrous in its past. Btw, these are sea level numbers. When Acura tested my car after the HG repair, they got 185 across the board at 5,500 ft altitude. Converted, that is 212 at sea level, which tracked with the car's history, as my NSX had an oil change at every 5,000 miles since 1992.
The way to rule out rings is to put a tablespoon of motor oil in your low cylinder and re-run the test. If it's back up around 215-220, you know it's the rings. If it is still 205, it's the valves either sticking or out of adjustment.
The way to rule out rings is to put a tablespoon of motor oil in your low cylinder and re-run the test. If it's back up around 215-220, you know it's the rings. If it is still 205, it's the valves either sticking or out of adjustment.
Thanks Honcho. Your stat range was what I was looking for.
Too bad for me...I bought a fresh motor and transmission before I got the results. Now, I need to figure out if I want to separate the heads in case I have a future need.
Or, I can just wheel the oror into a corner of my garage for safekeeping.
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