Time to upgrade fuel system?
Thread Starter
Instructor
Joined: May 2012
Posts: 166
Likes: 0
From: Charleston WV
Time to upgrade fuel system?
Hey guys.. I am currently running 28 lb injectors and stock pump (71k miles).. I have full bolt on's and a 150 shot through a plate system from nitrous outlet.. I am now adding a cam package from Tick.. 233 236 619 578 on a 112.. I know that will put me past the stock system abilities.. Would you guys recomend a BAP??.. a Walbro??.. Both?? And as far as injectors go.. Since its a wet system I only need to support my N/A numbers right?? Since the fuel is added through the N2O system when in use.. Maybe I am on crack lol.. if I need them would you go 42?? or would you go to 60??
Last edited by srooper1980; Dec 27, 2013 at 10:39 AM.
Racer
Joined: Apr 2010
Posts: 389
Likes: 25
There are calculators available (on line) which will help size injectors. 28# injector will carry around 350 hp, 42# injector will support around 535 hp, and a 60# injector will support around 750 hp. The assumptions are 43.5 psi fuel pressure, 8 injectors, 80% DC max and a .5 BSFC.
These are target numbers and not necessarily spot on. As noted, wrong section but good luck.
FWIW, I swapped 24# injectors for 42# injectors in a SBC stroker marine motor and kept the same fuel system with success. No pump mods.
These are target numbers and not necessarily spot on. As noted, wrong section but good luck.
FWIW, I swapped 24# injectors for 42# injectors in a SBC stroker marine motor and kept the same fuel system with success. No pump mods.
