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That is basically correct. If you just dump the gas at idle, it will bog, but you can go most of the way, but at 3 grand it is already advancing and turning at a rate to allow the full shot of gas to be burned. However, in my experience, that only applies to a stock motor, if you've modded the ports, exhaust, ignition, etc. all those things affect it as well. My street port could dump it right off.
I'd go with thr larger pump, as long as you get a regulator that is rated for 1-15 psi or so, you will be good. Then start in the range of jetting I gave and adjust individually from there.
ok waitn on rain to stop here :{ but i will get those out an the diacharge valve is the one u can see when u thak the floats out right an if so it wull draw n but not out an has no number on it eather i have looked
unscrew the head and then pull em out with your fingers, or use a pair of needle nose. A good regulator is a must. (-: If discharge valve is "closed" it means it has no hole in the outside housing. It will have a zero on it if it's "closed"
pump jets are the screws in front of the idle mixture screws, the big headed ones, under those.discharge valve is in the bottom of the bowl. Fuel injection pump will probably work, but you have to have a good regulator to use it.
ok it might not b the right one where r the pump jets at so i not getn the wrong number an i have a 180 main an shouldf have a 160 a/c tomarrow an where is the discharge valve an i need to jump to a 300 nidle an seat an i doint think the fuel pump pushes thats much but i think i have a fuel injected pump that will need to know asap thanks
Ok, good baseline for a stock 12a....... 65f9 idle, 170 to 185 main, 150 to 175 air correctors, f11 emulsion tubes, 36mm choke tubes (venturis), 45 to 50 pump jets, 0 (closed) discharge valve and a 300 needle and seat, run 3 psi fuel pressure with a pump that flows 160 to 250 lph.
Your 200 main is too big, your drowning it at the high end. I didn't realise pump jets even went to 150, but if that isn't a typo, your triple the size you need and drowning it again.
cool, lemme look up my different settings and I'll post a baseline for ya tomorrow. Do you have a handfull of jets above and below your current ones to tune with?