resurrected

Can a drive tighten up without scattering?

fbc25el

I would also check the fuel tank vent hose for a kink or blockage.

F-2 Speedy

iTrader: (6)

What EFI is it ? if its TB have you swapped them ?

splashandburn

ive eliminated that by running off an external 5 gallon tank with the exact same results A cracked plug is possible but not likely That motor went back in first and there's plenty of room.

splashandburn

I thought about that but I think with the HP I'm pushing it would have exploded by now

splashandburn

They're 500 efi's that were punched out to 540's. I have not tried swapping TB's yet . . .

splashandburn

They're 500 efi's that were punched out to 540's. I have not tried swapping TB's yet . . .

F-2 Speedy

iTrader: (6)

I was thinking they were carb style efi, MEFI 3 , 4 ? who tuned it ?

splashandburn

I believe they're MEFI 3. Tuned by the builder. We used the exact same program that was used before the top ends were done. Tuning was originally done on the dyno and then fine tuned in the boat using welded bungs in the headers.

J. Hordubay

what are you running on inlet side of prochargers, ive seen them suck filters partially closed and create a big restriction. happened to a friends 35 cig, wouldn't do it on dyno, but did it in boat