please help? injector question

Z28EATR · 02-10-2003, 04:51 PM

Can i run the brown top 35lb injectors off the turbocoupes on my mass air converted 88 lx 5.0? i was worried about impedence.

thanks

drtbiker · 02-11-2003, 01:40 PM

Why???
what r the major mods that you need some injectors like that

later

02-11-2003, 07:50 PM

Not sure if they make 35lb. injectors for the 5.0?? They make 36lbers though. Either way...that is WAY TOO BIG of an injector for your application. Why would you want such huge injectors?? Unless you plan on putting a blower on sometime soon, you will just be wasting gas. Your mileage will drop tremendously. Even with a blower...30lbers should be enough, depending on how much boost you're running. I checked out your mods in the engine specs. section of user's rides. If you still have the same set up...you definitely want to stick with the stock 19lb. injectors. They can handle up to 300-320hp. Many guys running aftermarket heads with big valves, intake and a cam, still run 19s. Stick with those and spend your money on something that will actually benefit your car.

Z28EATR · 02-14-2003, 07:18 AM

i wont be running these on current setup, ill be running these on a 331 stroker, after breakin i am adding a p1sc running about 9lbs of boost, comp ratio on flatops is 9:1 thanks for input.

88workcar · 02-14-2003, 07:33 AM

I am thinking that you can get those for free, or really cheap. They will be fine for the 331 and the blower, but not untill the blower. And at that time you will need a MAF and a computer chip that knows what size they are. For free, go ahead and get them, just don't put them on right now. And have them tested to make sure they work and work properly before you install them and have problems.

mike72678 · 02-15-2003, 12:32 AM

what you have to find out is if the turbo svo mustang eec's used a batch fire or sequencial fire injection . if they batch fire then they are high impedence , if they are sequencial , then they are low impedence . Most high performance import set ups with 4 cylinders used low impedence so I would guess they would be low , but don't quote me on that . You definitely need high for the 5 litre mustang eec .

Murdock · 02-15-2003, 01:21 AM

Mike is right, you will need a High impedance (saturated) injector to work in the ECM your running. High impedance injectors have an input resistance of 13 to 18 ohms. Low impedance (peak and hold) injectors are typically 2.5 to 4 ohms. Test the resistance before you try them or you will burn out the ECM.

Murdock

mustang5l5 · 02-15-2003, 02:23 AM

The injectors off a Turbocoupe are 35# and have an inpedance of 2.35 ohms. Therefore they will not work. BUT, the injectors off SUPERCOUPES with the 3.8L V6 supercharged are 36#ers with an impedance of 14.5 ohms and WILL work.

Here's a good website on injectors.
http://www.geocities.com/ttskipp/injector.html

The Mustang computer works with injectors with about 11-18ohms impedance.

Good source for junkyard 24#ers....460 trucks, V10's, Lincoln Mark VIII's with DOHC.

02-10-2003, 04:51 PM	#1
Z28EATR Registered Member Join Date: Jun 2000 Location: Florence, KY,USA Posts: 210	please help? injector question Can i run the brown top 35lb injectors off the turbocoupes on my mass air converted 88 lx 5.0? i was worried about impedence. thanks __________________ 88 LX 5.0 Ragtop "Desire" 14.18 @ 99.65 mph Best 60ft 2.19 YUK!!!! Best Mph 98.9 Slicks 13.86 @ 97.9 mph 60ft 1.93 yeah!!! Mod Specs

02-11-2003, 01:40 PM	#2
drtbiker Registered Member Join Date: Jan 2002 Location: Mt. Prospect,IL Posts: 474	Why??? what r the major mods that you need some injectors like that later __________________ 87-ford-mustang-SOLD! mods: 3:73's, off road h-pipe, b303 cam in gt- 40 motor w/ Power Plus intake, edelbrock 70mm tb & egr spacer, 72mm C&L, bbk long tubes, tremec tranny, centerforce dual friction clutch, upr and lwr CA's 255lph FP and soon more to come.... when i have money again SOME ADVICE Don't do burn outs in reverse it is very expensive New times with dead hook on dr's 13.27@103 with 2.0 60 foots w/100lb system Fastest time to date: 12.8@113

02-11-2003, 07:50 PM	#3
Simi Stang Guest Posts: n/a	injectors? Not sure if they make 35lb. injectors for the 5.0?? They make 36lbers though. Either way...that is WAY TOO BIG of an injector for your application. Why would you want such huge injectors?? Unless you plan on putting a blower on sometime soon, you will just be wasting gas. Your mileage will drop tremendously. Even with a blower...30lbers should be enough, depending on how much boost you're running. I checked out your mods in the engine specs. section of user's rides. If you still have the same set up...you definitely want to stick with the stock 19lb. injectors. They can handle up to 300-320hp. Many guys running aftermarket heads with big valves, intake and a cam, still run 19s. Stick with those and spend your money on something that will actually benefit your car.

02-14-2003, 07:18 AM	#4
Z28EATR Registered Member Join Date: Jun 2000 Location: Florence, KY,USA Posts: 210	injectors i wont be running these on current setup, ill be running these on a 331 stroker, after breakin i am adding a p1sc running about 9lbs of boost, comp ratio on flatops is 9:1 thanks for input. __________________ 88 LX 5.0 Ragtop "Desire" 14.18 @ 99.65 mph Best 60ft 2.19 YUK!!!! Best Mph 98.9 Slicks 13.86 @ 97.9 mph 60ft 1.93 yeah!!! Mod Specs

02-14-2003, 07:33 AM	#5
88workcar Registered Member Join Date: Oct 1999 Location: Pierre Part, La. U.S.A. Posts: 1,850	I am thinking that you can get those for free, or really cheap. They will be fine for the 331 and the blower, but not untill the blower. And at that time you will need a MAF and a computer chip that knows what size they are. For free, go ahead and get them, just don't put them on right now. And have them tested to make sure they work and work properly before you install them and have problems. __________________ 88workcar 1988 Mustang LX 342. 417rwhp @ 6800. 28 X 10 ET Drag, 4.30s, 10.69 @ 126.43 1.42 60ft. 11.13 @ 127.7 on BFGs 1.72 60ft Rice Hater # 42 To be old and wise, You must first be young and stupid I'm somewhere in tthe middle.

02-15-2003, 12:32 AM	#6
mike72678 MW Link Sponsor Join Date: Sep 2002 Location: rochester , ny Posts: 79	what you have to find out is if the turbo svo mustang eec's used a batch fire or sequencial fire injection . if they batch fire then they are high impedence , if they are sequencial , then they are low impedence . Most high performance import set ups with 4 cylinders used low impedence so I would guess they would be low , but don't quote me on that . You definitely need high for the 5 litre mustang eec .

02-15-2003, 01:21 AM	#7
Murdock Registered Member Join Date: Dec 2002 Location: Columbus, OH Posts: 100	Mike is right, you will need a High impedance (saturated) injector to work in the ECM your running. High impedance injectors have an input resistance of 13 to 18 ohms. Low impedance (peak and hold) injectors are typically 2.5 to 4 ohms. Test the resistance before you try them or you will burn out the ECM. Murdock __________________ LARZRACECARS larzracecars.com

02-15-2003, 02:23 AM	#8
mustang5l5 Registered Member Join Date: Sep 1999 Location: Boston Area, MA Posts: 8	The injectors off a Turbocoupe are 35# and have an inpedance of 2.35 ohms. Therefore they will not work. BUT, the injectors off SUPERCOUPES with the 3.8L V6 supercharged are 36#ers with an impedance of 14.5 ohms and WILL work. Here's a good website on injectors. http://www.geocities.com/ttskipp/injector.html The Mustang computer works with injectors with about 11-18ohms impedance. Good source for junkyard 24#ers....460 trucks, V10's, Lincoln Mark VIII's with DOHC. __________________ Mike -- '88 Mustang LX 5.0L AOD -- Black w/ '90GT Black Interior + '97 Cobra 17" rims List of modifications Some pics of my Mustang --'93 Lincoln Mark VIII-- 4.6L 32v DOHC V8 Some pics of my Mark VIII