Thread: 4BD1T Turbo Sizing and Performance Prediction.

Originally Posted by Ancient Mariner

check your getting full travel on pump.

Would this be the cam on top of the pump, does this need adjusting? Both motors I have are in the same spot for idle and what I guess is open throttle.

Originally Posted by Dougal

Either or both!

Did the intercooler, no difference what so ever

Get someone to hold down the go pedal or use a stick. Check at the pump end if you can get any extra movement .If you are not getting full movement you are wasting your time playing with the fuel screw

That could be my next move, will have to back the throttle stop bolt off first then see if there is any more adjustment in the cable. Had my bro in law floor it and it was hard up on the stop, but that doesn't mean it was foot to the floor.
Adjusted the stop screw on my other motor, there was a heap more to go on the cam. Is this some sort of governor?

Originally Posted by Vern

Did the intercooler, no difference what so ever

Not even hotter EGT and smoke? But yeah, that's minor. We now know your IC isn't blocked up.

If it were just fuel delivery then you wouldn't be able to pull 650C and get some smoke.

Was kind of getting dark so didn't look to hard for smoke, didn't notice anything unusual, only went for a spin around the block, felt the same, was running out of puff, would take of OK then wouldn't get much better.

Originally Posted by Ancient Mariner

Get someone to hold down the go pedal or use a stick. Check at the pump end if you can get any extra movement .If you are not getting full movement you are wasting your time playing with the fuel screw

Ok feels like the pedal could go another 10mm until it actually touches the floor, not sure if it is supposed to or not. Guessing this will give me about 5mm more throttle cable?

Maybe mods should move this to a new thread? Going off course