42 lb injectors

Dennzden · January 28th, 2012, 03:56 PM

Ok so my car is up and running but sounds like its backfiring. A mechanic friend said my injectors could be storing fuel for a secondary explosion. I have Trickflow street heat, twisted wedge heads, long tube headers, 75mm TB, 80mm maf, cam. Could 42lb injectors be too big for my build?

fogged306 · January 28th, 2012, 04:01 PM

Are you still on 302ci? If so, yes 42's are way too much fuel for what you've got.. I also wouldn't believe what your mechanic friend told you, he doesn't sound very experienced. Unless you've got a chip burnt specific to your combo, or have a tuner that you've had someone tune/tune yourself, you're going to be too rich with those 42's and stock cubes with that top end. You can adjust for them though if you do get a tune and should not have too much trouble running them. It may be a little trickier to get the tune right with them, but it should be possible, especially if they happen to be EV6 injectors.

Dennzden · January 28th, 2012, 04:24 PM

Yes its still a 302 ci. Should i go with 24lb instead?

Bullitt95 · January 29th, 2012, 03:17 AM

Originally Posted by Dennzden

Yes its still a 302 ci. Should i go with 24lb instead?

Yes, you should be running 24lb'ers. The 42lb'ers would have been suitable if your engine combo included a supercharger or turbo.

99FiveOh · January 31st, 2012, 12:10 PM

I about spewed soda through my nose when I read "secondary explosion". Your mechanic friend has been watching too much Fast n Furious lately! No offense.

95project · January 31st, 2012, 05:19 PM

i would probably spend the money on a good tune instead of buying injectors. 42's are big, but can be tuned to match what is needed. Plus, if you do any other mods down the road you may need the 42's.

Dennzden · January 31st, 2012, 07:15 PM

I thought about going to Anderson Motorsport and getting a tune & PMS. I kinda figured they were too big but got a great deal on them.

Dennzden · January 31st, 2012, 07:19 PM

No offense taken 99FIVEOH. I wasn't sure so I thought I would ask about it. Sad thing is he's been a mechanic for 25 years so I'm sure he was trying to make a buck.

98SnakeHorse · February 9th, 2012, 10:06 AM

Dang sold my 24lbrs with matching MAF not that long ago. Woulda been perfect for your set up.

January 28th, 2012, 03:56 PM	#1
Dennzden Newbie 1995 Mustang GT Join Date: Oct 2010 Location: Peoria, Illinois Posts: 21 iTrader: 0 reviews	42 lb injectors Ok so my car is up and running but sounds like its backfiring. A mechanic friend said my injectors could be storing fuel for a secondary explosion. I have Trickflow street heat, twisted wedge heads, long tube headers, 75mm TB, 80mm maf, cam. Could 42lb injectors be too big for my build?

January 31st, 2012, 12:10 PM	#5
99FiveOh Regular 1999 Mustang Join Date: Apr 2010 Location: Jacksonville, FL Posts: 204 iTrader: 0 reviews	I about spewed soda through my nose when I read "secondary explosion". Your mechanic friend has been watching too much Fast n Furious lately! No offense. __________________ 1999 V6 Vert converted to 5.0 EFI with Vortech V2 SQ, Edelbrock Performer intake, BBK shorties, O/R H, Flowmasters, 42lb injectors, 75mm Pro-M with MAFia extender, 255lph fuel pump. SCT tuned 370 rwhp 400 rwtq.

January 31st, 2012, 05:19 PM	#6
95project Enthusiast Join Date: Oct 2007 Location: Memphis TN Posts: 609 iTrader: 0 reviews	i would probably spend the money on a good tune instead of buying injectors. 42's are big, but can be tuned to match what is needed. Plus, if you do any other mods down the road you may need the 42's. __________________ 95 GT- AFR 185's, Comp CAM, Trick FLow TH upper and lower, 30lb injec, 76MM C&L kit, Full MSD, BBK Pulleys, 3:73, BBK Long Tubes, X Pipe, Magnaflow Cat back, Cobra front control arms, MM CC plates LCA's and Panhard bar, tuned by Adam @ Pops Racing.

February 9th, 2012, 10:06 AM	#9
98SnakeHorse Enthusiast 1995 Mustang Gt Join Date: Jul 2010 Location: Oskaloosa Posts: 708 iTrader: 1 reviews	Dang sold my 24lbrs with matching MAF not that long ago. Woulda been perfect for your set up. __________________ 98 Cobra_stock bs/exhaust [SOLD] 2000 s/c gt, 511rwh 450rwtq [SOLD] 1995 331 Stroker Gt, (Turbo build in progress) - http://www.moddedmustangs.com/forums...-95-5-0-a.html

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January 28th, 2012, 04:01 PM	#2
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	Are you still on 302ci? If so, yes 42's are way too much fuel for what you've got.. I also wouldn't believe what your mechanic friend told you, he doesn't sound very experienced. Unless you've got a chip burnt specific to your combo, or have a tuner that you've had someone tune/tune yourself, you're going to be too rich with those 42's and stock cubes with that top end. You can adjust for them though if you do get a tune and should not have too much trouble running them. It may be a little trickier to get the tune right with them, but it should be possible, especially if they happen to be EV6 injectors.

January 28th, 2012, 04:24 PM	#3
Dennzden Newbie 1995 Mustang GT Join Date: Oct 2010 Location: Peoria, Illinois Posts: 21 iTrader: 0 reviews	Yes its still a 302 ci. Should i go with 24lb instead?

January 31st, 2012, 07:15 PM	#7
Dennzden Newbie 1995 Mustang GT Join Date: Oct 2010 Location: Peoria, Illinois Posts: 21 iTrader: 0 reviews	I thought about going to Anderson Motorsport and getting a tune & PMS. I kinda figured they were too big but got a great deal on them.

January 31st, 2012, 07:19 PM	#8
Dennzden Newbie 1995 Mustang GT Join Date: Oct 2010 Location: Peoria, Illinois Posts: 21 iTrader: 0 reviews	No offense taken 99FIVEOH. I wasn't sure so I thought I would ask about it. Sad thing is he's been a mechanic for 25 years so I'm sure he was trying to make a buck.

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