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Old 10-21-2013
Dave Montgomery Dave Montgomery is offline
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Re: Yanmar 2GM20F mixing elbow Pearson 31-2

Here is what I did with my 3gm30. Took it out this past weekend for three days of motoring and sailing and the engine has never "seemed" to run as good! Smoother and way more cooling water and exhaust getting through. This was a cheap solution to the mixing elbow issue. It will be interesting to see how long it will last. The ports are significantly larger for both exhaust and water. Somebody questioned whether this might be a problem because of engine designed back pressure??? Well all I know is my F250 diesel wants the biggest exhaust I can get on it...
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