problems with modded 94 gt

corybens11 · April 19th, 2011, 06:51 PM

ok so i have a 94 gt that i havnt driven in a year or so because of school and what not but im getting back into it finally but i have a few problems, its a hci 306 with a 190 fuel pump 24 lb injectors 5 speed swap ect. One is that i have a really bad vibration in the shifter around 90 mph and up, i noticed that one of my wheel bearings is starting to make noise but i would think that would be more in the steering wheel if it was that.

second i got it tuned awhile back and the injectors were running at like 95 % duty cycle so he suggested i just went to 42 lb/ hr and a lightning MAF but it doesnt seem like anyone has these anymore, i plan on eventualy having around 550 to the wheels mayb a bit less with a 331 on boost, so would 42s support that or could i go to 60's but then it would probably be too big for my current 300hp set up right?

sorry for ranting but all help is awesome

thanks
cory

88Saleen · April 19th, 2011, 06:57 PM

yes 60lb injectors would be over kill for your setup right now, but if you get it tuned again im sure they would work ok on your current setup untill you boost it. Vibration in the shifter i would check U-joints first. As for the wheel bearings drive down a relatively straight/smooth road and swerve slowly. If when you turn right it makes more noise or gets louder its your front left wheel bearing. If when you turn left it gets louder its your right front wheel bearing.

corybens11 · April 19th, 2011, 07:57 PM

so its possible my 24s are just too small, everyone on mustangforums.com just wont listen and keep telling me they can support 350-400 hp

DsmDave · April 19th, 2011, 08:00 PM

U Joints, driveshaft balance?

lightning maf is a 90mm and always for sale on ebay. I bid on one a few weeks ago

fogged306 · April 19th, 2011, 08:07 PM

Originally Posted by corybens11

so its possible my 24s are just too small, everyone on mustangforums.com just wont listen and keep telling me they can support 350-400 hp

24lb injectors will support something like 375-380 at the fly. They will support most HCI 3" stroke engines, but it really depends on your combo. What is your HCI? What other supporting mods do you have?

fogged306 · April 19th, 2011, 08:08 PM

corybens11 · April 19th, 2011, 09:20 PM

Stock block .030" over
Federal Mogul Forged piston 10:1 compression rebuild kit
ARP connecting rod bolts and head bolts
trick flow top end kit
bbk Ceramic shorties with stage 8 locking bolts
frpp 9mm wires
bbk cai
summit 70mm tb
Gernatti MAF
Frpp 24# injectors
Kirbun FRP
smog pump delete
Flowmaster American thunder cat back
BBK o/r h-pipe
Trick flow elbow and 1 inch spacer
190lph fuel pump
180 thermostat

ryanw · April 20th, 2011, 12:09 AM

^^ you would think with your combo that 24lb would work...Hmmmmm

corybens11 · April 20th, 2011, 10:31 PM

i know, so why would they run 98% duty cycle? it must need bigger injectors

ryanw · April 20th, 2011, 11:41 PM

looks like you'll be in the market for some 30lb....

Have you had your combo dyno tuned, whats your horse power ?

corybens11 · April 21st, 2011, 07:20 PM

i wanna say it was like 275-290 somewhere in there, he didnt go into the tune at all because he said it was pointless without being about to add more fuel

fogged306 · April 21st, 2011, 07:27 PM

Are you sure they're 24lb injectors? That sounds more like 19# injectors than 24's. You shouldn't be at 95% duty cycle with 24's at that power level.

ryanw · April 21st, 2011, 10:40 PM

what color are your fuel injectors ?

canada_gt · April 21st, 2011, 10:43 PM

good chart

corybens11 · April 22nd, 2011, 01:21 PM

there white but i ran the numbers and there 24s

flyin ryan · April 22nd, 2011, 03:53 PM

Originally Posted by fogged306

Are you sure they're 24lb injectors? That sounds more like 19# injectors than 24's. You shouldn't be at 95% duty cycle with 24's at that power level.

exactly what I was thinking.. I've had two cars with the track heat tfs top end kit on them and both cars had 24lb injectors and had plenty left in them. They weren't close to being static.

ryanw · April 22nd, 2011, 06:59 PM

the research Ive done states the cream color injectors are 17lb and the white top are 19lb. so i don't think the ones you have are 24lb. i did come across a thread where some one else thought there white top injectors were 24lb but it was not proven, soooooo just pick your self up some blue top injectors and that will guaranty that you have 24lb. Ill be selling mine soon

Ford Fuel Injectors by Color [Archive] - CentralStreetScene.Org

corybens11 · April 27th, 2011, 05:25 PM

ok so i guess there tan, i ran the numbers, f5te-c1a, and there 24 pounders out of a truck, so that shouldnt be the problem, you wouldnt think id be maxing these out

fogged306 · April 27th, 2011, 05:53 PM

I just re-read your first post. Your tuner is probably the problem. He's recommending 42's for a 306 H/C/I. Are you just relying on what he told you that they're at 95% duty cycle? I would take the car somewhere else.

corybens11 · May 1st, 2011, 11:32 AM

i was right there looking at the data stream, hes a very well known tuner around here

April 19th, 2011, 06:51 PM	#1
corybens11 Newbie Join Date: Apr 2011 Posts: 9 iTrader: 0 reviews	problems with modded 94 gt ok so i have a 94 gt that i havnt driven in a year or so because of school and what not but im getting back into it finally but i have a few problems, its a hci 306 with a 190 fuel pump 24 lb injectors 5 speed swap ect. One is that i have a really bad vibration in the shifter around 90 mph and up, i noticed that one of my wheel bearings is starting to make noise but i would think that would be more in the steering wheel if it was that. second i got it tuned awhile back and the injectors were running at like 95 % duty cycle so he suggested i just went to 42 lb/ hr and a lightning MAF but it doesnt seem like anyone has these anymore, i plan on eventualy having around 550 to the wheels mayb a bit less with a 331 on boost, so would 42s support that or could i go to 60's but then it would probably be too big for my current 300hp set up right? sorry for ranting but all help is awesome thanks cory

April 19th, 2011, 06:57 PM	#2
88Saleen Enthusiast 1988 Mustang Join Date: Apr 2008 Location: Grand Blanc, Michigan Posts: 832 iTrader: 0 reviews	yes 60lb injectors would be over kill for your setup right now, but if you get it tuned again im sure they would work ok on your current setup untill you boost it. Vibration in the shifter i would check U-joints first. As for the wheel bearings drive down a relatively straight/smooth road and swerve slowly. If when you turn right it makes more noise or gets louder its your front left wheel bearing. If when you turn left it gets louder its your right front wheel bearing. __________________ 1988 vert - still in progress 2004 F250

April 19th, 2011, 08:00 PM	#4
DsmDave Enthusiast 2001 Mustang GT Join Date: Nov 2010 Location: Poughquag NY Posts: 979 iTrader: 2 reviews	U Joints, driveshaft balance? lightning maf is a 90mm and always for sale on ebay. I bid on one a few weeks ago __________________ bbk longtubes, bassani x, borla stingers, AM intake,bbk throttle body, Under drive pullies,Zex wet 125hp kit SCT Tuned by bama and drag radials, drag springs, agx shocks, lower control arms, subframe connectors MM+Cleavage Club #26

April 20th, 2011, 12:09 AM	#8
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,059 iTrader: 0 reviews	^^ you would think with your combo that 24lb would work...Hmmmmm __________________ 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

April 20th, 2011, 11:41 PM	#10
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,059 iTrader: 0 reviews	looks like you'll be in the market for some 30lb.... Have you had your combo dyno tuned, whats your horse power ? __________________ 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

April 19th, 2011, 07:57 PM	#3
corybens11 Newbie Join Date: Apr 2011 Posts: 9 iTrader: 0 reviews	so its possible my 24s are just too small, everyone on mustangforums.com just wont listen and keep telling me they can support 350-400 hp

April 19th, 2011, 08:08 PM	#6
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews

April 19th, 2011, 09:20 PM	#7
corybens11 Newbie Join Date: Apr 2011 Posts: 9 iTrader: 0 reviews	Stock block .030" over Federal Mogul Forged piston 10:1 compression rebuild kit ARP connecting rod bolts and head bolts trick flow top end kit bbk Ceramic shorties with stage 8 locking bolts frpp 9mm wires bbk cai summit 70mm tb Gernatti MAF Frpp 24# injectors Kirbun FRP smog pump delete Flowmaster American thunder cat back BBK o/r h-pipe Trick flow elbow and 1 inch spacer 190lph fuel pump 180 thermostat

April 20th, 2011, 10:31 PM	#9
corybens11 Newbie Join Date: Apr 2011 Posts: 9 iTrader: 0 reviews	i know, so why would they run 98% duty cycle? it must need bigger injectors

April 21st, 2011, 07:20 PM	#11
corybens11 Newbie Join Date: Apr 2011 Posts: 9 iTrader: 0 reviews	i wanna say it was like 275-290 somewhere in there, he didnt go into the tune at all because he said it was pointless without being about to add more fuel

April 21st, 2011, 07:27 PM	#12
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	Are you sure they're 24lb injectors? That sounds more like 19# injectors than 24's. You shouldn't be at 95% duty cycle with 24's at that power level.

April 21st, 2011, 10:40 PM	#13
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,059 iTrader: 0 reviews	what color are your fuel 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

April 21st, 2011, 10:43 PM	#14
canada_gt Regular 1996 mustang gt Join Date: Dec 2010 Location: Squamish B.C CANADA Posts: 116 iTrader: 0 reviews	good chart __________________ 1996 gt new motor and hopefully more POWA 1988 5.0L lx sold

April 22nd, 2011, 01:21 PM	#15
corybens11 Newbie Join Date: Apr 2011 Posts: 9 iTrader: 0 reviews	there white but i ran the numbers and there 24s

April 22nd, 2011, 06:59 PM	#17
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,059 iTrader: 0 reviews	the research Ive done states the cream color injectors are 17lb and the white top are 19lb. so i don't think the ones you have are 24lb. i did come across a thread where some one else thought there white top injectors were 24lb but it was not proven, soooooo just pick your self up some blue top injectors and that will guaranty that you have 24lb. Ill be selling mine soon Ford Fuel Injectors by Color [Archive] - CentralStreetScene.Org __________________ 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

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April 27th, 2011, 05:25 PM	#18
corybens11 Newbie Join Date: Apr 2011 Posts: 9 iTrader: 0 reviews	ok so i guess there tan, i ran the numbers, f5te-c1a, and there 24 pounders out of a truck, so that shouldnt be the problem, you wouldnt think id be maxing these out

April 27th, 2011, 05:53 PM	#19
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	I just re-read your first post. Your tuner is probably the problem. He's recommending 42's for a 306 H/C/I. Are you just relying on what he told you that they're at 95% duty cycle? I would take the car somewhere else.

May 1st, 2011, 11:32 AM	#20
corybens11 Newbie Join Date: Apr 2011 Posts: 9 iTrader: 0 reviews	i was right there looking at the data stream, hes a very well known tuner around here

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