Hawaii-Mike wrote:
H2RTuner wrote:
Just more info.
The simple fix is what we did, fit an S series oil pump, with the H2 wheel. The bike went the complete race on just at 7/8ths tank of oil, NO PREMIX. No performance issues.
Wow interesting, I didn't know an S series pump will bolt up to an H2 or H1. Nice tip!
This is what my bike had with it when purchased. It is an S model pump with the H2 wheel on it. It did pump just fine but leaked. Maybe I should have tried rebuilding it. I did buy the kit.
What I did instead was buy a ready to run updated H2-3 pump as per the service bulletin below. And the pair of H1 pumps with lines. So now I have four pumps total, three are redundant. Call it a character flaw if you like. I won’t argue.
Bulletin#: 73 H-18
Date: Nov. 17, 1972
Bike(s) affected: H2
Subject: Modified oil pump
Action taken:
Graph to correspond with carburetor changes in service bulletin part number 73 H-19, the oil pump has been modified for slightly reduced flow. Old pump, part #16082-033, labeled "H2-1" or "H2-2" is not to be used. New pump, part #16082-042, "H2-3" is to be used. This is a factory installation from H2E-16078.
The triples resource page is so handy. I set the pump dead on balls (it’s an industry term) to the marks.
And I picked up my painted parts today. He matched the original side cover I have perfectly.
Mark
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