24 lb.injectors?

T

Topdowncruise

New Member

Apr 7, 2005

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Canada

Jul 26, 2005

#1

• Jul 26, 2005

• #1

I'm wondering if I can avoid changing from the stock 19 lb.injectors to 24 lb.which would also require a new MAF.I have Ford Racing 303y aluminum heads,cobra intake (both not yet installed)and am about to purchase a BBK 65 mm throttle body and their unequal shorty headers.It is strictly a street car.The only mods completed so far are a Magnaflow catback and 3.55 gears.With all of the planned mods,will I be over the horsepower limit of my stock injectors and fuel pump?

 

D

Daggar

New Member

Jul 19, 2004

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Jul 26, 2005

#2

• Jul 26, 2005

• #2

I saw no mention of a cam. Without it, your 19s should be fine for now. Once you settle on a new one then you will likely need to swap out injectors and meter.

 

T

Topdowncruise

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Apr 7, 2005

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Jul 26, 2005

#3

• Jul 26, 2005

• #3

I still have the stock cam and don't plan to change it.If I don't need 24 lb injectors would I at least have to get a larger capacity fuel pump and an adjustable fuel regulator to increase the pressure?

 

S

Sicarius428

Active Member

Jan 6, 2004

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Jul 26, 2005

#4

• Jul 26, 2005

• #4

19s should be fine. If you don't have an adjustable fuel pressure regulator you might have some leaning at the high end... might want to pick one up.
Kevin

 

D

Daggar

New Member

Jul 19, 2004

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Jul 26, 2005

#5

• Jul 26, 2005

• #5

Your fuel pump will deliver what you need at stock fuel pressures. If you find yourself in a situation where you're having to ramp up fuel pressures then you may need a slightly larger pump. I doubt you will be in that situation though.

 

RaceDvr50

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Jul 26, 2005

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Coon Rapids

Jul 26, 2005

#6

• Jul 26, 2005

• #6

I'd go with the adjustable and I'd bump your pressure to about 42lbs, that should give you a little more fuel, higher if you start to see your plugs running any color other than dark brown to black. That is a substantial gain in air flow potential and it will end up running you a little lean at stock pressure.

 

T

Topdowncruise

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Apr 7, 2005

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Jul 26, 2005

#7

• Jul 26, 2005

• #7

It sounds like I can stick with the 19's with a fuel pressure regulator with bumped up pressure over stock.Is this with or without needing a bigger capacity fuel pump?

 

RaceDvr50

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Jul 26, 2005

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Coon Rapids

Jul 27, 2005

#8

• Jul 27, 2005

• #8

I can't say for sure on that one. That was one of the first things I did was when my factory fuel pump died I replaced it with I think it's a 110 liter per fuel pump. I think their are a lot of guys out there who are still running the factory pump into the 300+ horsepower range but it sure wouldn't hurt as long as you match it to your build. Some guys always think bigger is better and lose sight of matching parts in their project.

 

7

7upstang

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Sep 20, 2004

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Calgary, Alberta

Jul 27, 2005

#9

• Jul 27, 2005

• #9

Cam or no, replace your fuel pump. The 88LPH stock pump is barely adequate as it is. If you go with heads and intake, you'll need a stronger pump for sure. It's cheap insurance against blown head gaskets and other problems.