Which size injectors for turbo SBF and fuel pump question ...

Jacob

Jacob

Forum Member
Ok,im building my first turbo car and will have everything I need in less than 4 more months---> On3Performance 70mm turbo kit,Wideband,fuel injectors and a Megasquirt standalone to tune everything..
Its a stock block so I plan on 500RWHP max and im sure the 24lb injectors aren't enough so what size injectors will I need?I don't wanna go bigger than I need but big enough to run a safe tune..
Also what about my fuel pump (Walbro 190lph),will it be good enough for what I want?Not sure if it helps but heres what the car has as of right now..



Stock block 302 (std bore),Edelbrock Performer 5.0 aluminum heads (ported),Trickflow stage 1 cam, crane 1.7 roller rockers,HD valve springs,Typhoon upper and lower intake (ported), Accufab polished 70mm tb and egr spacer, Pro-m intake/80mm velocity maf. Anderson motorsports 6 inch power stack air filter,Ford Racing 24lb injectors, Kirban adjustable fuel pressure regulator, Walbro 190lph fuel pump..
 
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Im running 60lb injectors and a walbro 400lph intank pump my car went lean up top with a 255lph so the 190 will not cut it neither will those 24lb injectors
 
Crap,checked this with my stupid phone and didn't see the reply 90Super...I know the injectors won't work and wasn't sure about the pump..Going to go with a set of 60lb injectors and 340LPH fuel pump ..I'll get a new Aeromotive pump and see if I can find some used 60lb injectors....
 
I'm in the the research stage myself, along different lines though. My thought is, 80lbs injectors, E-85 and a pump....What pump, I haven't figured out yet.
 
StockNotch said:
I'm in the the research stage myself, along different lines though. My thought is, 80lbs injectors, E-85 and a pump....What pump, I haven't figured out yet.
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if your not going all out, E-85 i think is a bad choice.....its hard to find, its got to be tested, all your fuel components must be comparable with it.

80# injectors wont give you much on e85 so im guessing the set up is a 302 car on low boost.

ur better off with a pump gas 93 tune if ur on a mild set up. pull up to any pump, fill it up for less then race gas prices, Still put the 500 horse down ur looking for.

my old set up was 42 pound injectors, Pro m mass air, stock on 3 turbo system on 9 pounds. Lideo tuned it and we were a few hp under 500.
 
i have a pro 750 in my car for a pump. little loud, but it gets the job done and i could push it to the 1500 hp mark when i want.
 
StockNotch said:
I'm in the the research stage myself, along different lines though. My thought is, 80lbs injectors, E-85 and a pump....What pump, I haven't figured out yet.
Click to expand...

80lb Injectors on E85 should be good for around 700hp. I like the weldon stuff....especially the A1100 inline unit. Its quiet and bullet proof.

Don't buy into the testing of the fuel. I, along with others have been pouring this stuff in and just running. I used to check all the time, but noticed no difference between E70 and E85. E70 will run richer than E85 is the only difference. Just make sure to be conservative on timing as once you cross the point of too much timing the motor will eat itself on E85.

My brothers car is a 93 pump gas car that is non-intercooled and it made 520rwhp on Lidio's dyno.

The decision needs to be how much HP do you want. 93 has its place, but if you want to make more than 500 then E85 is the solution.
 
98 Camaro said:
80lb Injectors on E85 should be good for around 700hp. I like the weldon stuff....especially the A1100 inline unit. Its quiet and bullet proof.

Don't buy into the testing of the fuel. I, along with others have been pouring this stuff in and just running. I used to check all the time, but noticed no difference between E70 and E85. E70 will run richer than E85 is the only difference. Just make sure to be conservative on timing as once you cross the point of too much timing the motor will eat itself on E85.

My brothers car is a 93 pump gas car that is non-intercooled and it made 520rwhp on Lidio's dyno.

The decision needs to be how much HP do you want. 93 has its place, but if you want to make more than 500 then E85 is the solution.
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I'm no stranger when it comes to E85 itself, the last car ran it for a long time. I am more curious as to the pump to run in order to support the fuel/power level.
 
StockNotch said:
I'm no stranger when it comes to E85 itself, the last car ran it for a long time. I am more curious as to the pump to run in order to support the fuel/power level.
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Weldon A1100 or 2015 or 2025. The a1100 is quiet, the 2015/25 are loud but can be controlled with a voltage box.
 
I'll be going with the Walbro 405 (F90000262) when I do my turbo setup this winter with 60# injectors.
 
Instead of trying to use what others with "similar setups" have used, why not be certain and calculate what size injectors (and pump) you need?

--Joe
 
soap said:
Instead of trying to use what others with "similar setups" have used, why not be certain and calculate what size injectors (and pump) you need?

--Joe
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Because its a simple answer considering the amount of people that have successfully ran this setup. 42s can be stretched to make 500hp on gas with a turbo. A 255 will also move enough fuel provided its a strong pump and you have adequate voltage going to it.
 
SuperStang90 said:
Because its a simple answer considering the amount of people that have successfully ran this setup. 42s can be stretched to make 500hp on gas with a turbo. A 255 will also move enough fuel provided its a strong pump and you have adequate voltage going to it.
Click to expand...

I always refer back to the quote "Trust but verify".

Do your own calcs to verify what others have told you. I would never blindly trust what others have done, it's not rocket science to be 100% certain.

--Joe
 
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