24# injectors

91ghp5.0

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May 25, 2005

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#1

• Nov 3, 2005

• #1

ok so i found a good deal on some 24 # injectors. my righ tnow i have a B cam w/ longtubes and boltons. the CAI, MAF, and cobra upper/lower manifolds will be going on soon (christmas??). eventually i'd like to do afr 165's. will the 24's be necessary? and w/o the heads on, will the 24's be overkill? will i lose a ton of gas mileage (still in school, and this is my daily driver). will a larger in-tank fuel pump /fuel pressure regulator be necessary?
-Dan

 

legalize420

Active Member

May 21, 2005

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Nov 3, 2005

#2

• Nov 3, 2005

• #2

overkill, would be a different story with the afr's

 

giddyup306

Founding Member

Oct 22, 2002

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#3

• Nov 3, 2005

• #3

I ran a similar combo with #19s. Ran fine. Plus you will need a reclibrated/new maf with them (24#s).

 

RacEoHolic330

I like to dress like a pretty girl

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Nov 3, 2005

#4

• Nov 3, 2005

• #4

get the injectors and just wait to get heads first before you use the injectors. Not needed with your current combo.

 

91ghp5.0

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May 25, 2005

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#5

• Nov 3, 2005

• #5

are the 24's necessary with the heads though? the heads unfortunately will have to come later, due to lack of funding lol. could i get the fuel pressure tuned down on the 24's while i wait for the heads?

 

mrswivlepants

New Member

Aug 13, 2003

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Nov 4, 2005

#6

• Nov 4, 2005

• #6

Adjustable fuel pressure regulator.

 

S

stang0f87

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Aug 16, 2004

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Fort Smith, AR

Nov 4, 2005

#7

• Nov 4, 2005

• #7

If its a good enough deal, I'd definitely buy the 24s. Doesn't look like you really need them now, but you'll be glad u did when you start making future mods.

 

G

GREYFOX4INCH

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May 8, 2005

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western MA

Nov 4, 2005

#8

• Nov 4, 2005

• #8

you guys are saying overkill if he puts the 24's on a mild combo, but will the 24's actaully hurt perfomance on a mild combo? wont the injectors only give the amount of fuel that the engine is asking for, or will more fuel be delivered per pulse just cuz? if he has a MAF that is calibrated for 24's the computer should know how to ajust the pulses to accommodate for them right?
am i misinformed? i bet i am.

 

huRACEmentPSR

Banned

Apr 2, 2005

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San Jose, CA

Nov 4, 2005

#9

• Nov 4, 2005

• #9

didnt the 95 cobras have 24s? they had basic boltons, intake and such....

 

91ghp5.0

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#10

• Nov 4, 2005

• #10

i've found a MAS matched to the 24 lb. injectors as well

 

L

luckythirteen13

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Jul 19, 2005

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Nov 4, 2005

#11

• Nov 4, 2005

• #11

just get them. if you want to put them on go for. if the maf is calibrated to 24# injectors it wont effect gas milage when crusing but when you get into the high rpms you may run rich

 

legalize420

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May 21, 2005

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Nov 4, 2005

#12

• Nov 4, 2005

• #12

might not be a good idea. i was running rich with 24's

 

G

GREYFOX4INCH

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Nov 4, 2005

#13

• Nov 4, 2005

• #13

huRACEmentPSR said:

didnt the 95 cobras have 24s? they had basic boltons, intake and such....

Click to expand...

I know the 93 cobra conversion kit comes with 24's,EEC,and the MAF. so the 93 was running 24's with only a diff intake. but the cobra computer is not the same so i dont know. i think the 93 cobra EEC sucks for further moding? some one has to know this..

 

RacEoHolic330

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Nov 4, 2005

#14

• Nov 4, 2005

• #14

just for a reference, when I was running my afr 165's/b-31 cam/ systemax II intake with 24lb injectors, the injectors were running at 98% duty cycle at 5800 rpms (shoud be below 90%). I should have used 30 lbers.

 

DMAN302

My mom says thanks for the pearl necklace.

Nov 8, 2003

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windsor, Canada

Nov 4, 2005

#15

• Nov 4, 2005

• #15

Several times I've read the injectors running under stock spec or higher fuel pressure will not give the correct delivery. I would take the 24's now and put them in a drawer..they will provide you no benefit now, but come later with a head upgrade you'll be able to meet the needs of the combo..as is now your setup at stock pressure setting will be more than adequate to supply the fuel.