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  1. bearboley

    1500 max rpm? nhc 250

    In my part of the world we call it funnin a bit. I think tiny110 took it as such. You have to admit it would wake it up for a bit till it burnt a hole. A few post back I did tell him to shim the governor spring to increase the rpm's. I should have looked in the book as I to have a set of cummins...
  2. bearboley

    1500 max rpm? nhc 250

    I am sure I told you a before in this thread that you shim the spring in the back of the pump to increase rpm and fuel pressure at the same time. Its very easy to do even you could do it I think. Stack about a quarter inch of shimes under that spring , on the right side of the pump should be a...
  3. bearboley

    1500 max rpm? nhc 250

    Why get insulting when someone was trying to help you out?
  4. bearboley

    1500 max rpm? nhc 250

    Did you shim the spring in the back of the pump to increase pump pressure? Those shims also control high rpm. The more shims the higher the rpm's and pum pressurre.
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