question about injector size

92lx50 · April 28th, 2008, 07:33 AM

I have a 91 lx 5.0 manual trans I would like to know what size injectors you guys think I should run. My mods are Explorer intake, bbk cai, 75mm throttle body, h-pipe and 3.73 gears., Any help would be great.

Haggis13 · April 28th, 2008, 08:29 AM

I think your Throttle body is too big for what you have - Regardless, your 19# injectors are fine for what you have. If you change your cam and heads, then you may need to step up to some 24# injectors.

Vamp89 · April 28th, 2008, 08:37 AM

Originally Posted by Haggis13

I think your Throttle body is too big for what you have - Regardless, your 19# injectors are fine for what you have. If you change your cam and heads, then you may need to step up to some 24# injectors.

+1 75mm way too big.

Burn'nRubber · April 28th, 2008, 11:19 AM

Im running a 75mm T/B with my set-up, and it seems to run just fine...It came with my intake so I figured I would just throw it on. It will help though when I install my heads and cam.

Goblin · April 28th, 2008, 05:14 PM

The 75mm throttle body isnt too big. The 19lb/hr injectors are fine for your setup now.

95opal · April 28th, 2008, 06:44 PM

Vamp89 · April 28th, 2008, 10:50 PM

Some people say mine is alittle big for what I got done.

Goblin · April 28th, 2008, 10:51 PM

5mm isnt much of a difference. Its not too big.

Vamp89 · April 28th, 2008, 11:07 PM

So ur saying I could've originally went with the 75mm t/b and 76mm mass air , cause I hope to have my heads by this winter.But as soon as I get my rebate check I'm ordering lowering springs, 3.73's, subframe connectors, and some needed shocks and struts.

Goblin · April 28th, 2008, 11:08 PM

Yep. You could have left the 75mm on, and it would have been fine.

Vamp89 · April 28th, 2008, 11:11 PM

Wasted money.

92lx50 · April 29th, 2008, 07:30 AM

Thanks for the help guys

April 28th, 2008, 07:33 AM	#1
92lx50 Newbie 1991 Mustang LX Join Date: Feb 2008 Location: wisconsin Posts: 8 iTrader: 0 reviews	question about injector size I have a 91 lx 5.0 manual trans I would like to know what size injectors you guys think I should run. My mods are Explorer intake, bbk cai, 75mm throttle body, h-pipe and 3.73 gears., Any help would be great.

April 28th, 2008, 08:29 AM	#2
Haggis13 Enthusiast 1993 Mustang GT Join Date: Sep 2006 Location: Ottawa, Ontario, Canada Posts: 593 iTrader: 0 reviews	I think your Throttle body is too big for what you have - Regardless, your 19# injectors are fine for what you have. If you change your cam and heads, then you may need to step up to some 24# injectors. __________________ Bart 93 Black on Black GT Kenne Bell S/C GIVE 'ER!

April 28th, 2008, 11:19 AM	#4
Burn'nRubber Regular 1992 Mustang GT Coming soon... Join Date: Aug 2007 Location: Rushville, IN Posts: 253 iTrader: 0 reviews	Im running a 75mm T/B with my set-up, and it seems to run just fine...It came with my intake so I figured I would just throw it on. It will help though when I install my heads and cam. __________________ 1992 Hatch: 306ci, gt40p's, comp xe270, Edelbrock Performer, 1.6 r/r, full bolt-ons, and some supension work

April 28th, 2008, 05:14 PM	#5
Goblin Hardcore Enthusiast 88mm Join Date: Apr 2007 Location: Tucson, AZ Posts: 2,111 iTrader: 0 reviews	The 75mm throttle body isnt too big. The 19lb/hr injectors are fine for your setup now. __________________

April 28th, 2008, 06:44 PM	#6
95opal Hardcore Enthusiast 95 opalfrost gt Join Date: Nov 2006 Location: Connecticut Posts: 1,516 iTrader: 0 reviews	__________________ 5.0 magazines 94-04 performance mustangs feature car! Fall 2010

April 28th, 2008, 10:50 PM	#7
Vamp89 Regular 1989 Mustang GT Join Date: May 2006 Location: Indiana Posts: 194 iTrader: 0 reviews	Some people say mine is alittle big for what I got done. __________________ Ported Saleen Vortech Intake BBK 70mm t/b,BBK CAI,BBK Reg,BBK 255 Fuel Pump Hooker Super Comp Long-tube Headers Fcam Ported Motorsport J302 Heads 30# Injectors 1.6rr 80mm Mass Air 4:11 gears

April 28th, 2008, 10:51 PM	#8
Goblin Hardcore Enthusiast 88mm Join Date: Apr 2007 Location: Tucson, AZ Posts: 2,111 iTrader: 0 reviews	5mm isnt much of a difference. Its not too big. __________________

April 28th, 2008, 11:07 PM	#9
Vamp89 Regular 1989 Mustang GT Join Date: May 2006 Location: Indiana Posts: 194 iTrader: 0 reviews	So ur saying I could've originally went with the 75mm t/b and 76mm mass air , cause I hope to have my heads by this winter.But as soon as I get my rebate check I'm ordering lowering springs, 3.73's, subframe connectors, and some needed shocks and struts. __________________ Ported Saleen Vortech Intake BBK 70mm t/b,BBK CAI,BBK Reg,BBK 255 Fuel Pump Hooker Super Comp Long-tube Headers Fcam Ported Motorsport J302 Heads 30# Injectors 1.6rr 80mm Mass Air 4:11 gears

April 28th, 2008, 11:08 PM	#10
Goblin Hardcore Enthusiast 88mm Join Date: Apr 2007 Location: Tucson, AZ Posts: 2,111 iTrader: 0 reviews	Yep. You could have left the 75mm on, and it would have been fine. __________________

April 28th, 2008, 11:11 PM	#11
Vamp89 Regular 1989 Mustang GT Join Date: May 2006 Location: Indiana Posts: 194 iTrader: 0 reviews	Wasted money. __________________ Ported Saleen Vortech Intake BBK 70mm t/b,BBK CAI,BBK Reg,BBK 255 Fuel Pump Hooker Super Comp Long-tube Headers Fcam Ported Motorsport J302 Heads 30# Injectors 1.6rr 80mm Mass Air 4:11 gears

April 29th, 2008, 07:30 AM	#12
92lx50 Newbie 1991 Mustang LX Join Date: Feb 2008 Location: wisconsin Posts: 8 iTrader: 0 reviews	Thanks for the help guys

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