How many compression rings do pistons in marine engines normally have?
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Answer:
Most often 2 to no more than 4. Outboards tend to have more different designs but I've seen a lot of different positions for the rings. If you are taking a mechanics test, there are "wiper" rings and compression rings so be careful when ask how many and be able to identify them.
Rob at Yahoo! Answers Visit the source
Other answers
Outboard 2-3 Gas inboard 3 Diesel 5 some very.
45 auto
The compression ring is actually a set of rings installed on the bottom groove of the piston. It will be a scraper ring then a expansion ring then another scraper ring. After reading what I have said here. I see That i misread the question. i actually was thinking oil ring not compression ring. My mistake.OOPS
jim s
2 stroke outboard? 4 stroke outboard? I/O? Diesel? Usually 2 I believe, but can vary depending on the type of motor.
clawless
For small inboard boats, it's traditionally been 2-3.
benthic_man
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