Bigger injectors on stock engine?

95mustanggt · 07-16-2002, 07:53 AM

Would 30# injectors be really, really bad for my 95 GT?

(modifications in sig)

USMC302 · 07-16-2002, 08:20 AM

Well, first you would have to get the tube that goes along with the injectors for the Mass Air meter, which will be costly and without heavy mods or at least 350 horsepower you really don't need that big of an upgrade. Your computer would most likely adjust anyway to keep the right fuel/air mixture and you would not see any benifit from the 30's. They are good supporters of horsepower and make room , but they are not producers, kind of like pulleys. if you plan on spraying or boosting then I would say go for it. they would be needed to support such an application.

chris91LX · 07-16-2002, 09:31 AM

19# injectors will handle up to about 300hp. You could put the 30# injectors on your car or throw the money out the window and get about the same result with a stock motor. Put the $200 into pulleys, exhaust or suspension and you'll get more bang for the buck. You won't need bigger injectors unless you put on new heads, cam and intake, or put on a blower, a turbo or run a butt load of nitrous.

SCOTTLT79 · 07-16-2002, 10:26 AM

hey 95mustanggt,
I hate to change your subject but I was curious how your exhaust sounds with the off road and the dynomax. and what kind of dynomax you have. I was thinking about going with the mac off road h and the super turbo cat back system but I was told that the dynomax aren't that loud. I'll check this thread later but if you could send me a private message, that would be great. Its scottlt79.

thanks

95mustanggt · 07-16-2002, 11:29 AM

I'm not trying to get any performance out of the 30#'s. I already have a set of pulley's in my trunk

.

I think my injectors are shot and I don't want to put another set of 19#'s on because eventually I want to go with TFS Heads, TFS Intake and TFS #1 cam. It will just be a while before I can afford to do this much to the car, so that's why I was wondering if I could run 30's without damage to the car.

SCOTTLT79 check your PM

USMC302 · 07-16-2002, 11:34 AM

go with 24's!

RPM427 · 07-16-2002, 11:44 AM

I agree, 24lbs/hr will work great with heads/cam. Naturally apirated those will support 400 hp, and will work on your stock engine. You will just need to get a matching MAF sensor.

95mustanggt · 07-16-2002, 12:03 PM

I've heard bad things about 24# injectors.

Although I probably could run 24# injectors with no problem on the stock set up. I just don't want to go with 24#ers and after I install my heads/intake/cam set up have someone tell me I need 30's. I have to recalibrate my MAF, which I don't want to be doing more than once.

chris91LX · 07-16-2002, 12:12 PM

Another option would be to buy someone's old 19's (like mine for instance

) for like $20 and saving the $200 for later. Or you could check the ones you have to be sure you even have a problem. I also agree that the 24's are a much better choice for the combo your leaning toward.

95mustanggt · 07-16-2002, 01:00 PM

Quote:

Originally posted by chris91LX
Another option would be to buy someone's old 19's (like mine for instance ) for like $20 and saving the $200 for later. Or you could check the ones you have to be sure you even have a problem. I also agree that the 24's are a much better choice for the combo your leaning toward.

I'll keep that in mind

I THINK that I have an injector problem. I have to perform a test on the fuel system first. My shraeder valve broke on me and Ford has been taking a couple days to get the part. It should be in this afternoon and hopefully I'll get the test competed.

Seriously, I may have to talk to you about your old injectors, if I need them.

USMC302 · 07-16-2002, 01:03 PM

Yeah, lots of poeple find it hard to tune the 24's and MAF perfectly. The Cobra computer and MAF is the ideal components to use from Ford when using the 24's for the best tune. But then again that's more money. I use the 24's with a C&L 73mm with no problems and excellent idle. I guess I got lucky. Most don't have many problems at all but there are a few that have stumpers. Good luck!

95mustanggt · 07-16-2002, 01:07 PM

Quote:

Originally posted by USMC302
Yeah, lots of poeple find it hard to tune the 24's and MAF perfectly. The Cobra computer and MAF is the ideal components to use from Ford when using the 24's for the best tune. But then again that's more money. I use the 24's with a C&L 73mm with no problems and excellent idle. I guess I got lucky. Most don't have many problems at all but there are a few that have stumpers. Good luck!

USMC302, what injectors do you use for your SC 95 GT?

USMC302 · 07-16-2002, 01:20 PM

19's but I wouldn't advise it for anyone else. I have the Vortech 155lph external pump and of course the vortech FMU, but the power seems to die away right at 4500rpm's. Don't know if it's fuel or not. Timing is good, but fuel would be my first guess.

95mustanggt · 07-16-2002, 01:57 PM

I would guess fuel too. 19# with a Vortech. You should upgrade.

25thmustang · 07-16-2002, 02:03 PM

DON'T go with bigger injectors.

I learned this myself. I had a 70mm Mass Air, and 24lb injectors a little while ago. With my combo and those parts I COULD NOT spin the tires at the track on 245/45/17 street tires. I removed the injectors and mass air, and gained tons of low end torque, enough to need drag radials. The stock parts will last till at least 300hp. If you upgrade you will gain on the top end but lose torque down low.

Don't go with them just yet in my opinion!

USMC302 · 07-16-2002, 02:24 PM

True and I will, but 19lb injectors support up to 300hp, and with a stock motor and a 5lb blower, I don't think I am at that yet. But i will be doing the upgrade anyway.

25thmustang · 07-16-2002, 02:35 PM

With a blower I would recommend it, even if you don't have 300hp but without one, a stock or mild motor doesn't need 24lb injectors.

HORSEMEN RACING · 07-16-2002, 02:40 PM

95Mustang,I have a rather simple question for you? Do you have an adjustable regulator?

Years ago and I mean years ago back when FFW was nothing but a puppy,guy used to race Street 5.0 named Lee Rutter,he made 390hp with 19 pounders,but his fuel pressure was cranked up to 52psi.

Now I know you are not making that much hp but if you have an adjustable regulator you can fine tune the pressure to where you need it.

If your combo is tuned correctly you will be surprised what the stock equipment can support,remember these guys used to run big numbers with a lot of stock equipment until A4 blocks,R302 blocks and GT40 intakes came along.

Also with Motorsport equipment it is all a roll of dice with anything you buy.

Good luck with your combo.

LX XLR8R · 07-16-2002, 02:42 PM

i ran 11.7s with old combo with 19# injectors annd a dry shot..so they will go fast

USMC302 · 07-16-2002, 03:00 PM

Absolutely agreed, 19lb squirter will handle much with tuning. Don't forget a chip will help the fuel curve also, a lot of times the computer will take over regardless if you have 50lb injectors on a stock app. or not. It will read the mixture and utilize what you need.

HORSEMANS RACING, I just came from Camp pendleton, I know a lot of mustang junkies there, who are you with over there? You know they even have a mustang club there on base.

07-16-2002, 08:20 AM	#2
USMC302 Registered Member Join Date: Apr 2001 Location: Gallatin, Tn Posts: 1,326	Well, first you would have to get the tube that goes along with the injectors for the Mass Air meter, which will be costly and without heavy mods or at least 350 horsepower you really don't need that big of an upgrade. Your computer would most likely adjust anyway to keep the right fuel/air mixture and you would not see any benifit from the 30's. They are good supporters of horsepower and make room , but they are not producers, kind of like pulleys. if you plan on spraying or boosting then I would say go for it. they would be needed to support such an application. __________________

07-16-2002, 10:26 AM	#4
SCOTTLT79 Registered Member Join Date: Aug 2000 Location: Raynham, Ma, USA Posts: 189	hey 95mustanggt, I hate to change your subject but I was curious how your exhaust sounds with the off road and the dynomax. and what kind of dynomax you have. I was thinking about going with the mac off road h and the super turbo cat back system but I was told that the dynomax aren't that loud. I'll check this thread later but if you could send me a private message, that would be great. Its scottlt79. thanks __________________ 95 Red Mustang GT Pro 5.0, MAC fenderwall cold air induction kit, BBK Off-Road H-pipe with Magnaflow cat-back system Mostly stock(looking to modify) Rice Haters Club Member #63

07-16-2002, 11:29 AM	#5
95mustanggt Registered Member Join Date: May 2000 Location: Kamloops, BC Posts: 2,875	I'm not trying to get any performance out of the 30#'s. I already have a set of pulley's in my trunk . I think my injectors are shot and I don't want to put another set of 19#'s on because eventually I want to go with TFS Heads, TFS Intake and TFS #1 cam. It will just be a while before I can afford to do this much to the car, so that's why I was wondering if I could run 30's without damage to the car. SCOTTLT79 check your PM __________________ 1995 Mustang GT 20016 F150 Lariat Super Crew

07-16-2002, 11:34 AM	#6
USMC302 Registered Member Join Date: Apr 2001 Location: Gallatin, Tn Posts: 1,326	go with 24's! __________________

07-16-2002, 11:44 AM	#7
RPM427 Registered Member Join Date: Aug 2001 Location: Huntington NY Posts: 573	I agree, 24lbs/hr will work great with heads/cam. Naturally apirated those will support 400 hp, and will work on your stock engine. You will just need to get a matching MAF sensor. __________________ -1993 Mustang, 900rwhp 03-04 cobra based 4v swap, full Griggs setup, project underway -1994 Ranger w/ 427cid windsor (daily beater) check it out!

07-16-2002, 07:53 AM	#1
95mustanggt Registered Member Join Date: May 2000 Location: Kamloops, BC Posts: 2,875	Bigger injectors on stock engine? Would 30# injectors be really, really bad for my 95 GT? (modifications in sig) __________________ 1995 Mustang GT 20016 F150 Lariat Super Crew

07-16-2002, 09:31 AM	#3
chris91LX Registered Member Join Date: Oct 1998 Location: Suburban Chicago, Hanover Park Posts: 695	19# injectors will handle up to about 300hp. You could put the 30# injectors on your car or throw the money out the window and get about the same result with a stock motor. Put the $200 into pulleys, exhaust or suspension and you'll get more bang for the buck. You won't need bigger injectors unless you put on new heads, cam and intake, or put on a blower, a turbo or run a butt load of nitrous.

07-16-2002, 12:03 PM	#8
95mustanggt Registered Member Join Date: May 2000 Location: Kamloops, BC Posts: 2,875	I've heard bad things about 24# injectors. Although I probably could run 24# injectors with no problem on the stock set up. I just don't want to go with 24#ers and after I install my heads/intake/cam set up have someone tell me I need 30's. I have to recalibrate my MAF, which I don't want to be doing more than once. __________________ 1995 Mustang GT 20016 F150 Lariat Super Crew

07-16-2002, 12:12 PM	#9
chris91LX Registered Member Join Date: Oct 1998 Location: Suburban Chicago, Hanover Park Posts: 695	Another option would be to buy someone's old 19's (like mine for instance ) for like $20 and saving the $200 for later. Or you could check the ones you have to be sure you even have a problem. I also agree that the 24's are a much better choice for the combo your leaning toward. __________________ My Ford Club http://www.midwestfords.org/ Best time N/A 12.9 @ 107 1.711 60' 125 shot - 12.04 @ 113 1.59 60'

07-16-2002, 01:03 PM	#11
USMC302 Registered Member Join Date: Apr 2001 Location: Gallatin, Tn Posts: 1,326	Yeah, lots of poeple find it hard to tune the 24's and MAF perfectly. The Cobra computer and MAF is the ideal components to use from Ford when using the 24's for the best tune. But then again that's more money. I use the 24's with a C&L 73mm with no problems and excellent idle. I guess I got lucky. Most don't have many problems at all but there are a few that have stumpers. Good luck! __________________

07-16-2002, 01:20 PM	#13
USMC302 Registered Member Join Date: Apr 2001 Location: Gallatin, Tn Posts: 1,326	19's but I wouldn't advise it for anyone else. I have the Vortech 155lph external pump and of course the vortech FMU, but the power seems to die away right at 4500rpm's. Don't know if it's fuel or not. Timing is good, but fuel would be my first guess. __________________

07-16-2002, 01:57 PM	#14
95mustanggt Registered Member Join Date: May 2000 Location: Kamloops, BC Posts: 2,875	I would guess fuel too. 19# with a Vortech. You should upgrade. __________________ 1995 Mustang GT 20016 F150 Lariat Super Crew

07-16-2002, 02:03 PM	#15
25thmustang Registered Member Join Date: Jun 2002 Location: Kensington CT Posts: 48	DON'T go with bigger injectors. I learned this myself. I had a 70mm Mass Air, and 24lb injectors a little while ago. With my combo and those parts I COULD NOT spin the tires at the track on 245/45/17 street tires. I removed the injectors and mass air, and gained tons of low end torque, enough to need drag radials. The stock parts will last till at least 300hp. If you upgrade you will gain on the top end but lose torque down low. Don't go with them just yet in my opinion! __________________ I am only 17 so this is it for now! 1989 Mustang LX: Cobra Intake, 65mm Tbody, 1.7RR, Mac CAI, 1 5/8 Mac headers, 2 1/2 Mac H-pipe, 2 1/2 Flowmaster Cat-back, 3.73s, BFGoodrich 275/40/17 Drag Radials. 2001 GT leather seats, 17x9 Cobra Rs. Ricer Hater's club: member #48 14.185 @ 97mph (with AOD) 12-19-01

07-16-2002, 02:24 PM	#16
USMC302 Registered Member Join Date: Apr 2001 Location: Gallatin, Tn Posts: 1,326	True and I will, but 19lb injectors support up to 300hp, and with a stock motor and a 5lb blower, I don't think I am at that yet. But i will be doing the upgrade anyway. __________________

07-16-2002, 02:35 PM	#17
25thmustang Registered Member Join Date: Jun 2002 Location: Kensington CT Posts: 48	With a blower I would recommend it, even if you don't have 300hp but without one, a stock or mild motor doesn't need 24lb injectors. __________________ I am only 17 so this is it for now! 1989 Mustang LX: Cobra Intake, 65mm Tbody, 1.7RR, Mac CAI, 1 5/8 Mac headers, 2 1/2 Mac H-pipe, 2 1/2 Flowmaster Cat-back, 3.73s, BFGoodrich 275/40/17 Drag Radials. 2001 GT leather seats, 17x9 Cobra Rs. Ricer Hater's club: member #48 14.185 @ 97mph (with AOD) 12-19-01

07-16-2002, 02:40 PM	#18
HORSEMEN RACING Registered Member Join Date: Jun 2002 Location: Camp Pendleton,Cali Posts: 95	I have a ??????? 95Mustang,I have a rather simple question for you? Do you have an adjustable regulator? Years ago and I mean years ago back when FFW was nothing but a puppy,guy used to race Street 5.0 named Lee Rutter,he made 390hp with 19 pounders,but his fuel pressure was cranked up to 52psi. Now I know you are not making that much hp but if you have an adjustable regulator you can fine tune the pressure to where you need it. If your combo is tuned correctly you will be surprised what the stock equipment can support,remember these guys used to run big numbers with a lot of stock equipment until A4 blocks,R302 blocks and GT40 intakes came along. Also with Motorsport equipment it is all a roll of dice with anything you buy. Good luck with your combo. __________________ OC "there are 5,000 Army troops sitting on their butts doing nothing,while 2 companies of Marines are securing this island" spoken by a Army General on the Isle of Grenada in 1983

07-16-2002, 02:42 PM	#19
LX XLR8R Dirk Diggler Join Date: Feb 1999 Location: SLOATSBURG, NY Posts: 1,931	i ran 11.7s with old combo with 19# injectors annd a dry shot..so they will go fast __________________ 95 undecided cubes, AFR 185s,undecided cam, undecided intake, and a 150 hit 89 "turbonotch" 2.3T You might want to hold on..i saw this on a cartoon once

07-16-2002, 03:00 PM	#20
USMC302 Registered Member Join Date: Apr 2001 Location: Gallatin, Tn Posts: 1,326	Absolutely agreed, 19lb squirter will handle much with tuning. Don't forget a chip will help the fuel curve also, a lot of times the computer will take over regardless if you have 50lb injectors on a stock app. or not. It will read the mixture and utilize what you need. HORSEMANS RACING, I just came from Camp pendleton, I know a lot of mustang junkies there, who are you with over there? You know they even have a mustang club there on base. __________________

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