Phill, Why won't dropping the needles help your situation? Have you changed the displacement? And/ or the exhaust back pressure? Are your existing needles worn?
Lloyd [EMAIL PROTECTED] wrote: >Hi people, >I've just had my 750/4 rejetted and find that here are some issues still >outstanding... > >At idle the mixture is fine. >At WFO the mixture is fine. >At half - three/fourths the mixture is fine. >At partial (just cracked to half) it's rich to all blazes. > >Are there sources for different profile needles? Is there an option for >altering the cutaway to reduce the fuel flow at just cracked to half? > >Alternately, what's the go for computer controlled injection? > >BTW, the graphs show 55hp at the wheel at 8,000 and still pointing up. I >didn't want to run it past the red. I'm told that the Dynojet dynos >inflate the hp figures by about 17%, so the Rickman is 65hp if run on a >Dynojet. >Is that good for a '73? > >Regards, Phill > >
