Scooterotica

I'm building a fast touring P-200 E. Here's the spec. Worb 5 Mushroom long stroke crank, Pinasco kit, German Market TM 27 carb, MBD reed, SIP carb manifold, Macsi boost bottle, SiP fast flow tap and JL Right hander.

Do I need to fit a fuel pump? If so, can I plumb it to the same brass bung that the Macsi boost bottle is attached to via a "Y". I would use a Mikuni vacuum operated diaphram pump if I needed one. I am not using a extended range tank.

I can't see why not providing the vacuum pulse is strong enough to pump the fuel through. The only way to tell is to suck it and see... The carb will be set higher than the fuel level in the tank when low which leads to starvation so a pump is a must but if it over fuels you will need to fit a restrictor in the fuel line.

wack 63 wrote:I can't see why not providing the vacuum pulse is strong enough to pump the fuel through. The only way to tell is to suck it and see... The carb will be set higher than the fuel level in the tank when low which leads to starvation so a pump is a must but if it over fuels you will need to fit a restrictor in the fuel line.

Thanks for the answer. I thought I needed a pump and I found the decade old instructions for the Macsi last night. I can use both from one bung. If as you say the pulses are hot enough.