fuel injector size
Thread Starter
Evolved Member
iTrader: (37)
Joined: Feb 2008
Posts: 957
Likes: 0
From: San Diego, CA
fuel injector size
My future build plans are red, kelford 272, meth injection (only because I don't can't get race fuel where I live), and the mods in my sig. Along with ported 65m tb, ported intake manifold, and ported exhaust manifold.
With all that said, what size injectors should I run. My tuner said I should get 680s or 780s. I wanted to get more input. And I was getting PTE injectors, are they any good?
Would I benefit from a double pumper?
With all that said, what size injectors should I run. My tuner said I should get 680s or 780s. I wanted to get more input. And I was getting PTE injectors, are they any good?
Would I benefit from a double pumper?
Last edited by ch53avitech; Dec 29, 2008 at 07:47 AM.
780s
double pumper is not needed unless you are shooting 500whp+
What are you building for? Road Race, Drag Race or just a nice DD...
double pumper is not needed unless you are shooting 500whp+
What are you building for? Road Race, Drag Race or just a nice DD...
Last edited by cpoku; Dec 29, 2008 at 07:52 AM. Reason: added question
The 780`s will be O.K. for the Red plus meth. But, they`d be only marginally sufficient for the Red and 93 octane at the higher boost levels(26 PSI+). I would do the PT&E 880`s for the Red. These will provide sufficient headroom should you ever want to run a high boost non-Meth ECU map(race gas). If you eventually run corn gas, then you`ll want 1000`s, or a 1200`s, as well as a double pumper. The single Walbro is good for a bit more than 525 WHP(non-oxygenated fuels).
Last edited by sparky; Dec 29, 2008 at 08:17 AM.
Trending Topics
Thread Starter
Evolved Member
iTrader: (37)
Joined: Feb 2008
Posts: 957
Likes: 0
From: San Diego, CA
The FIC injectors have a very nice spray pattern compared to the others. I'd suggest you look at FIC's website www.fuelinjectorclinic.com for the pictures of the comparison.
I agree with the previous poster who said get (at least) the 1000s and do it once. With the 1000s, you'll be at 70% or so of injector duty cycle, and that gives you plenty of headroom to allow the injectors to do what they are supposed to. Above 80 or 90% IDC, you have less control of the injector's flow characteristics, and that is to be avoided. I've run 1000s with the Red on gas, and hit about 70%. If you're going E85, you'll need at least 30% more fuel, and that calculates out to 1150s or 1200s.
FIC also flow matches their sets of injectors to less than 1% variance, and provides flow sheets with your set, so you know exactly what you're dealing with. That's a nice benefit.
I agree with the previous poster who said get (at least) the 1000s and do it once. With the 1000s, you'll be at 70% or so of injector duty cycle, and that gives you plenty of headroom to allow the injectors to do what they are supposed to. Above 80 or 90% IDC, you have less control of the injector's flow characteristics, and that is to be avoided. I've run 1000s with the Red on gas, and hit about 70%. If you're going E85, you'll need at least 30% more fuel, and that calculates out to 1150s or 1200s.
FIC also flow matches their sets of injectors to less than 1% variance, and provides flow sheets with your set, so you know exactly what you're dealing with. That's a nice benefit.
Thread Starter
Evolved Member
iTrader: (37)
Joined: Feb 2008
Posts: 957
Likes: 0
From: San Diego, CA
The FIC injectors have a very nice spray pattern compared to the others. I'd suggest you look at FIC's website www.fuelinjectorclinic.com for the pictures of the comparison.
I agree with the previous poster who said get (at least) the 1000s and do it once. With the 1000s, you'll be at 70% or so of injector duty cycle, and that gives you plenty of headroom to allow the injectors to do what they are supposed to. Above 80 or 90% IDC, you have less control of the injector's flow characteristics, and that is to be avoided. I've run 1000s with the Red on gas, and hit about 70%. If you're going E85, you'll need at least 30% more fuel, and that calculates out to 1150s or 1200s.
FIC also flow matches their sets of injectors to less than 1% variance, and provides flow sheets with your set, so you know exactly what you're dealing with. That's a nice benefit.
I agree with the previous poster who said get (at least) the 1000s and do it once. With the 1000s, you'll be at 70% or so of injector duty cycle, and that gives you plenty of headroom to allow the injectors to do what they are supposed to. Above 80 or 90% IDC, you have less control of the injector's flow characteristics, and that is to be avoided. I've run 1000s with the Red on gas, and hit about 70%. If you're going E85, you'll need at least 30% more fuel, and that calculates out to 1150s or 1200s.
FIC also flow matches their sets of injectors to less than 1% variance, and provides flow sheets with your set, so you know exactly what you're dealing with. That's a nice benefit.