I have a dilema, the in side of the fuel pump is 12mm ID but the hose from the tank is only 7-8mm, will this case the pump to strain of the flow from the tank is not great enough ?

It's an injection pump with upto 7 bar pressure

its what i,m using,seems to cope ok

As Conrod says, will be fine, mine is fed by 8mm copper tube. HTH Ray

Cheers,

i had read simlar on an old forum for an xr4i car, but they were still building so i don't know what happened !!!

6.4 bore tube will flow enough for 300 bhp at 3 bar - how powerful is your engine going to be?

Running about BHP 120ish, but most of the fuel is returned to the tank anyway