Alaskarotorhead

the carb is a 4150 (I think 600CFM)it's a basic perormance replacement for a smallblock V8.
the biggest thing was to lock the secondaries to open
mechanically.But this made me really lean when I steped on it,so on went the 50cc(stock is 30cc)accelerator pump.This got me back to correct mix when I punched it;this is where all the poular 2 barrel carbs for
rotary's fall short...They can't supply the fuel when you stomp the gas at 1500 or 2000 rpm,a holley pumps fuel
(in my case 50cc's or a double pumper 60cc)as soon as you open the throttle.I'm not saying that they're superior because holley has the opposite drawback,
they could never flow as much as a down draft.Anyway
holleys can be worked with,it just takes patience and understanding of what each part does to
see what needs to be changed to make it run right.


Nick

nimrodTT

Cool, but I'm not that impressed. IMSA cars back in 1980 ran bp 12As with the modded Nikkis to make just as much power, and with only a few changes to the carb. Racing Beat claimed 235hp SAE with just primary venturies bored to .980", 160 primary fuel jets, and 190 secondary fuel jets.