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post #10 of Old 11-07-2013
Dave Montgomery
Join Date: Sep 2012
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Re: Yanmar 2GM20F mixing elbow Pearson 31-2

Neo, I was only mad when I priced out the OEM part from Yanmar!! :-). Your concerns are valid but compensated for. Yes there is an internal pipe which extends downward from where the raw water exhaust enters at the top. This takes the raw water down past where the exhaust enters. One would figure though that even with out that internal pipe the vertical nature would take the water past the exhaust entrance. As in my post, the system has worked very well so far with about 20 hours of use. Much better engine temps, way more water getting through and far less engine exhaust congestion. Somebody mentioned engine back pressure being negatively altered but my understanding is the more exhaust flow the more GO!!
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