My H2B has the stock fuel tap, which I would like to keep. I have never ridden an H2 before this bike, so I really didn't know what to expect, and nothing to compare it to except my H1 from 40 years ago. With either the stock carbs or the TM34s I have on it now, and my large, midrange pipes on it, it makes sudden, exciting power at 5k but seems to sign off at 6500 rpm. This becomes a bit sucky on the freeway or any decent straight road, where going much over 100 it just does not want to pull anymore. I just accepted it as how these bikes are, and that my midrange pipes are hurting the top end, but that was sort of intentional, I never wanted to beat this motor too hard. I had noticed a sort of slow down on occasion, like a sieze, but it wasn't, it would just stop pulling at random, usually after I had beaten it a bit. I had a think about it and wondered if the fuel tap was a restriction because of vacuum loss, and the carb bowl levels were getting low, so I tried riding with it on prime. Oh yes, much better, revs on up, and just keeps going past 6500 easily. So I can ride it on prime, but I then lose the reserve function, which I do use, and this bike certainly likes it's fuel. I know some run the Pingel tap, but I would like to keep the stock tap if possible. Any ideas? I don't think a vacuum check valve is a good idea, and I don't want to forget to shut the fuel off with an open flow tap.
_________________ 1974 Kawasaki H2B 750, 1981 Yamaha XV750 Cafe, 1986 Kawasaki KDX200, 2003 Honda XR100, 2004 SDG140. 2006 Ninja 500R Turbo intercooled fuel injected.
|