injector issues

FROMxAxDIG · May 6th, 2011, 06:03 PM

Ok so I got a new 5.0 HO for my 91 LX. YAY.. except the number 1 injector is stuck WIDE open. I tried a few of the injectors off the old motor, all of them are crap.

So this brings me to the issue. The cheapest I found one injector is $72.00

. This has me thinking of upgrading the injectors to 21 or 24 LBS/HR.

What Mods do I need to support these two sizes????? Any help is appreciated. What would be better for performance, I dont care about MPG. But I also dont have any way to tune it (other than time adjustment).

What I do have (mods)

BBK pulleys
Flow master 40's
K&N filter.

FROMxAxDIG · May 6th, 2011, 06:04 PM

I do know that 8 injectors is about $300, which I feel better about than on for $72 (if a performance gain can be made).

302Army187 · May 6th, 2011, 06:18 PM

19lb injectors?

ill send you mine for cheap dude, lol

FROMxAxDIG · May 6th, 2011, 06:46 PM

Well I wanted to move up from 19 LBS, if I can. I may be interested depending on if anyone else has ideas or not.

By the way nice vert, mine is a red vert also.

ryanw · May 6th, 2011, 06:46 PM

Originally Posted by 302Army187

19lb injectors?

ill send you mine for cheap dude, lol

+1....hell i might just through mine away...lol

FROMxAxDIG · May 6th, 2011, 07:25 PM

well shit you both can send them my way, as long as they work. I may even have some of that green stuff called money. @302Army187 I subscribed to your you tube, your car runs pretty beastly BTW.

Dap1991 · May 6th, 2011, 07:45 PM

they came stock on a bunch of ford cars that you can find in the junk yard also im pretty sure

ryanw · May 6th, 2011, 07:56 PM

Ya to tell you the truth my old 19lb have a few missing O-rings and the pentacle caps on a few are cracked, but they can be replaced from what i understand, but they worked great when i removed them.....But really i see them on ebay (used) going dirt cheap, if you cant find them cheap, then ill give you mine and you can swap over all the stuff you need from your old injectors(like O rings and the caps).....But you will have to pay shipping, before ill ship them..... if i were you, i would try and find them locally first

FROMxAxDIG · May 6th, 2011, 08:06 PM

thank you guys. Also what mods do I need to bump up to 21 or 24 LBS????? Also what kind of gain is there in 21 or 24s???? I will be looking at the junk yard and ebay. Thanks again.

ryanw · May 6th, 2011, 08:11 PM

cylinder heads

FROMxAxDIG · May 6th, 2011, 08:43 PM

thanks Ryan. what Kind of gain would that net?? I', think of going N02 or a Super/turbo charging it. IDK just yet but I want to get some decent numbers now, so if you have any other suggestions let me know.

thanks again guys.

302Army187 · May 6th, 2011, 09:06 PM

Originally Posted by FROMxAxDIG

well shit you both can send them my way, as long as they work. I may even have some of that green stuff called money. @302Army187 I subscribed to your you tube, your car runs pretty beastly BTW.

thanks for subscribing dude.

I can send them your way, I just ask a little money for my time is all and to cover shipping. I would try ebay first, see whats on there.

you will gain nothing from upgrading to 24lb injectors, unless your old injectors where so bad they where making the car run rich. which Is highly unlikely.

If I could start over again, and I wish I could, I would have just put a turbo on the car, and I would be going faster then I am now for a 1/4 of what I have in the car now.

Turbo Kits for Ford Mustangs

ryanw · May 7th, 2011, 10:34 AM

ya if you change your intake and exhaust, your 19lb injectors are fine , its usually when you change your cylinder heads that the engine will benefit from larger injectors

FROMxAxDIG · May 7th, 2011, 12:02 PM

Thanks guys. I'm just going to pick up a set on Ebay. also thanks for the help with my questions, and the suggestions.

ryanw · May 7th, 2011, 12:14 PM

Originally Posted by FROMxAxDIG

Thanks guys. I'm just going to pick up a set on Ebay. also thanks for the help with my questions, and the suggestions.

go on corral.net and find some used trick flow heads, they run about $800

dont go on ebay and just pick up any old set of heads, you'll regret it in the end...

FastStang91Lx · May 8th, 2011, 01:08 AM

I bought mine on ebay... But they were new, never ran

May 6th, 2011, 06:03 PM	#1
FROMxAxDIG Newbie 91 lx 5.0 CV Join Date: Jan 2011 Location: mo-town, WV Posts: 25 iTrader: 0 reviews	injector issues Ok so I got a new 5.0 HO for my 91 LX. YAY.. except the number 1 injector is stuck WIDE open. I tried a few of the injectors off the old motor, all of them are crap. So this brings me to the issue. The cheapest I found one injector is $72.00 . This has me thinking of upgrading the injectors to 21 or 24 LBS/HR. What Mods do I need to support these two sizes????? Any help is appreciated. What would be better for performance, I dont care about MPG. But I also dont have any way to tune it (other than time adjustment). What I do have (mods) BBK pulleys Flow master 40's K&N filter.

May 6th, 2011, 06:18 PM	#3
302Army187 Hardcore Enthusiast '89 LX 'Vert 10's or bust... Literally. Join Date: May 2009 Location: Denver, Co Posts: 2,915 iTrader: 0 reviews	19lb injectors? ill send you mine for cheap dude, lol __________________ H/C/I 302 + nitrous for now... supercharger/turbo soon? www.youtube.com/Xarmy187 Please support my YouTube channel! My videos don't disappoint!

May 6th, 2011, 07:45 PM	#7
Dap1991 Hardcore Enthusiast 91 GT 90 LX 5.0 Join Date: Aug 2009 Location: youngstown, ohio Posts: 1,025 iTrader: 0 reviews	they came stock on a bunch of ford cars that you can find in the junk yard also im pretty sure __________________ 1991 GT- All Stock 1990 LX 5.0- CAI, Shorty headers, flowmaster, Tubular Upper and Lower Control arms, Tokico HP series, Eibach Springs

May 6th, 2011, 07:56 PM	#8
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	Ya to tell you the truth my old 19lb have a few missing O-rings and the pentacle caps on a few are cracked, but they can be replaced from what i understand, but they worked great when i removed them.....But really i see them on ebay (used) going dirt cheap, if you cant find them cheap, then ill give you mine and you can swap over all the stuff you need from your old injectors(like O rings and the caps).....But you will have to pay shipping, before ill ship them..... if i were you, i would try and find them locally first __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

May 6th, 2011, 08:11 PM	#10
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	cylinder heads __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

May 6th, 2011, 06:04 PM	#2
FROMxAxDIG Newbie 91 lx 5.0 CV Join Date: Jan 2011 Location: mo-town, WV Posts: 25 iTrader: 0 reviews	I do know that 8 injectors is about $300, which I feel better about than on for $72 (if a performance gain can be made).

May 6th, 2011, 06:46 PM	#4
FROMxAxDIG Newbie 91 lx 5.0 CV Join Date: Jan 2011 Location: mo-town, WV Posts: 25 iTrader: 0 reviews	Well I wanted to move up from 19 LBS, if I can. I may be interested depending on if anyone else has ideas or not. By the way nice vert, mine is a red vert also.

May 6th, 2011, 07:25 PM	#6
FROMxAxDIG Newbie 91 lx 5.0 CV Join Date: Jan 2011 Location: mo-town, WV Posts: 25 iTrader: 0 reviews	well shit you both can send them my way, as long as they work. I may even have some of that green stuff called money. @302Army187 I subscribed to your you tube, your car runs pretty beastly BTW.

May 6th, 2011, 08:06 PM	#9
FROMxAxDIG Newbie 91 lx 5.0 CV Join Date: Jan 2011 Location: mo-town, WV Posts: 25 iTrader: 0 reviews	thank you guys. Also what mods do I need to bump up to 21 or 24 LBS????? Also what kind of gain is there in 21 or 24s???? I will be looking at the junk yard and ebay. Thanks again.

May 6th, 2011, 08:43 PM	#11
FROMxAxDIG Newbie 91 lx 5.0 CV Join Date: Jan 2011 Location: mo-town, WV Posts: 25 iTrader: 0 reviews	thanks Ryan. what Kind of gain would that net?? I', think of going N02 or a Super/turbo charging it. IDK just yet but I want to get some decent numbers now, so if you have any other suggestions let me know. thanks again guys.

May 7th, 2011, 10:34 AM	#13
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	ya if you change your intake and exhaust, your 19lb injectors are fine , its usually when you change your cylinder heads that the engine will benefit from larger injectors __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

May 7th, 2011, 12:02 PM	#14
FROMxAxDIG Newbie 91 lx 5.0 CV Join Date: Jan 2011 Location: mo-town, WV Posts: 25 iTrader: 0 reviews	Thanks guys. I'm just going to pick up a set on Ebay. also thanks for the help with my questions, and the suggestions.

May 8th, 2011, 01:08 AM	#16
FastStang91Lx I Post Entirely Way Too Much 1991 Mustang LX 5.0 Join Date: Jan 2010 Location: Minnesota Posts: 5,572 iTrader: 2 reviews	I bought mine on ebay... But they were new, never ran __________________ Point made in less than a few hours with minimal response. http://www.moddedmustangs.com/forums...ml#post4465184

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