fuel injector size question

rustang94

Member

Dec 2, 2003

281

0

16

Milwaukee WI.

Aug 17, 2004

#1

• Aug 17, 2004

• #1

I'm going to be getting a 8/9 psi procharger p-1sc with a two core intercooler ( in about a year ). I got all the info in a big folder from them the other day and they don't have any kits that come with bigger injectors. Or have any info on what size to use. Any suggestions? I would like to get the mass-air and injectors now, unless it will be overkill till the supercharger.
thanks

 

Joes95GT

New Member

Jan 23, 2003

3,132

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Delaware

Aug 17, 2004

#2

• Aug 17, 2004

• #2

rustang94 said:

I'm going to be getting a 8/9 psi procharger p-1sc with a two core intercooler ( in about a year ). I got all the info in a big folder from them the other day and they don't have any kits that come with bigger injectors. Or have any info on what size to use. Any suggestions? I would like to get the mass-air and injectors now, unless it will be overkill till the supercharger.
thanks

Click to expand...

What else is done to the car?

If the car is stock, or has very little mods, I'd go with a 36 or 42 lb/hr injector with no FMU.

Joe

 

rustang94

Member

Dec 2, 2003

281

0

16

Milwaukee WI.

Aug 17, 2004

#3

• Aug 17, 2004

• #3

I have a ford performance solutions block 306 with
ross racing pistons
lighten rods and crank
gt-40p heads
1.6 ford rr
gt-40 intake
65mm throttle body
mac cold air
under drive pulleys
aode with shift kit
rear end with 3.55s
fuel pressure regulator
155 fuel pump

 

R.J.

Member

Aug 20, 2003

813

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16

Warwick, Rhode Island

Aug 17, 2004

#4

• Aug 17, 2004

• #4

Not to get to technical, because experience will probably teach more, but Summit Racing had a tech article on fuel injector size, that had these equations;
for a blown V8; .06875 x HP you want to produce = Fuel inj size to handle it
Exp. .06875 x 523hp = 36lb So Summit says 36 lb injectors can handle up to 523hp! Again this is just the math way of doing it.

for N/A V8; replace .06875 with .05625 and do the same.

 

rustang94

Member

Dec 2, 2003

281

0

16

Milwaukee WI.

Aug 17, 2004

#5

• Aug 17, 2004

• #5

Thanks. Looks like I'm going to have to wait till I get the procharger to get my mass and injectors.

 

Joes95GT

New Member

Jan 23, 2003

3,132

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Delaware

Aug 17, 2004

#6

• Aug 17, 2004

• #6

I'd go with 42's. For the most part, you have a blown 5.0 Explorer motor. 42's will do you well. With it being intercooled, I'd say you're going to have somewhere in the neighborhood of 420 RWHP which equates to ~500 FWHP.

Joe

 

rustang94

Member

Dec 2, 2003

281

0

16

Milwaukee WI.

Aug 17, 2004

#7

• Aug 17, 2004

• #7

I'm definatly getting it dyno tuned once its installed ( to be safe )

 

Joes95GT

New Member

Jan 23, 2003

3,132

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Delaware

Aug 17, 2004

#8

• Aug 17, 2004

• #8

rustang94 said:

I'm definatly getting it dyno tuned once its installed ( to be safe )

Click to expand...

Good idea.

Joe