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post #2 of Old 12-16-2005
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Yanmar 2GM20F

I have a 300td mercedes and that has five cylinders and you would think it is going to jump out of the car at an idle but when at higher rpm it settles down to what you would expect. I''m not sure that my 2gm20 idles as rough as your engine but it only has two cylinders and I expect it to be rougher than a 5 cylinder engine. Like your engine, when at a higher rpm my yanmar settles down to a "quiet" roar.
I think it is interesting that the electronically controlled diesel engines are so quiet,say a 5 cylinder dodge sprinter engine, but that''s new technology for you and we sure don''t want any new electronics in our sailboat engines that we might have to work on out on the pond.
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