94 Mustang GT Modded By Chimps

Spinetingler · January 3rd, 2012, 10:54 PM

I have a grocery list of problems with a 94' GT with a 5 speed. I was told that it has a zoom kevlar racing clutch. At 2,500 rpm there is a very noticeable vibration. Above or below is smooth. Also the speedo is off by 7 mph. When the speedo reads 70 mph there is such a crazy palpable and audible vibration that I just pull it into neutral and coast until it goes away.
It will grind at times going into 2nd and 5th. It has popped out of gear in 5th many times. Suspecting clutch and flywheel. Thanks for any help.

ryanw · January 3rd, 2012, 11:14 PM

Possible the clutch is not alinded right.

thisguysride · January 4th, 2012, 01:55 AM

the gears grinding could be a clutch issue, the popping out of fifth gear would almost make me think tranny internal problem, but then again if your clutch is out of wack you may not be going into gear completely. one thing i would try is once your in fifth gear, without touching the clutch let off the accelerator and pull the shifter down as if trying to slide it into gear. take not as to if it seems to completly slide int o gear and afer your do so note as to weather it pops out of gear after doing this.. if its a brand new clutch it could be grabbing alot. even when shifting. i had this problem on my cummings when i put a heavy towing clutch in. grabbed way more than it should have when shifting, did this for anout 2k miles till it wore itself in. then never had the problem again. you could also have a broken spring on the clutch...

Spinetingler · January 5th, 2012, 11:15 AM

Thanks guys! Also if I go for a high RPM launch...it will slip as though it is not even in gear.
I have to do a rolling launch or it slips terribly. Not sure if too much motor for the clutch/tranny or just another incompetent mod from the previous owner. Car is referred to as a "home made" car by a technician buddy of mine. LOL!

gripthenboost · January 5th, 2012, 09:29 PM

pics of said home made car and ill tell you if its home made.

FastStang91Lx · January 6th, 2012, 12:16 AM

And pics of said chimps who did the modding...

Spinetingler · April 12th, 2012, 05:10 PM

Also, at speed between 65 and 75 will get tremendous vibration that shakes entire car and shifter shakes so hard that you can hear it rattle in the opening of for the tranny. Below 65-75 and is very smooth as if nothing wrong. Also get weak vibration at exactly 2500 RPM.
Will try to get pics up soon so everyone can get a good laugh. Previous owner painted it yellow. Looks like a hi-liter!

FastStang91Lx · April 12th, 2012, 08:06 PM

Vibration at certain rpm can be as simple as u joints. You have to remove the driveshaft to check. It's not just a 'wiggle it and it feels good' thing.

SSteady98 · April 12th, 2012, 08:18 PM

Originally Posted by FastStang91Lx

Vibration at certain rpm can be as simple as u joints. You have to remove the driveshaft to check. It's not just a 'wiggle it and it feels good' thing.

^^^^This.
The chimps that modded my car snapped two bolts off in the rear end yolk for the drive shaft. had to get those out, and get new ones since the TWO LEFT INSIDE OF IT BROKE. two left. inside of it. 4 bolts should go in there. That said, I had to replace the worn ass ujoints as well. Vibration isn't so bad(the shaft itself is a little dinged up from the chimps)

I get some pretty good vibration too, but that's because this tko tranny isn't mounted right. when we took the motor out to try and fix a knock along with a very very gone clutch( said chimps really fucked this car up) we had to jack it up. it's a "Custom" fabricated mount, and I didn't mount it right.

I really hate having to fix problems that a prior owner created due to stupidity.

Spinetingler · May 14th, 2012, 11:19 AM

Drive shaft and U joints have been replaced. Still have the same shuttering/vibration at 65-75 Mph. Have not had driveshaft checked to see if it is balanced. Nothing changed from the swap of the U joints and shaft though. Very much looking strongly at clutch and tranny internals.

nolife · May 14th, 2012, 01:38 PM

Originally Posted by FastStang91Lx

And pics of said chimps who did the modding...

They've moved on to other cars.. Looks like they are doing some recon on a Hyundai

http://youtu.be/GCoIyoP_n3g

ryanw · May 14th, 2012, 07:59 PM

I think ive met one of those chimps..... they put in my motor mounts afew years back, using some over sized nut as a spacer...... i have no idea why.... i didnt find this out until i swaped in my new motor

furreal302 · May 15th, 2012, 02:23 AM

Originally Posted by Spinetingler

Very much looking strongly at clutch and tranny internals.

This sounds like the problem and you will probably find other stuff messed up while you're working on it. I am SO glad mine was stock when I bought it. I hate fixing other peoples half assed jobs.

January 3rd, 2012, 10:54 PM	#1
Spinetingler Newbie 1994 Join Date: Jan 2012 Location: Iowa Posts: 8 iTrader: 0 reviews	94 Mustang GT Modded By Chimps I have a grocery list of problems with a 94' GT with a 5 speed. I was told that it has a zoom kevlar racing clutch. At 2,500 rpm there is a very noticeable vibration. Above or below is smooth. Also the speedo is off by 7 mph. When the speedo reads 70 mph there is such a crazy palpable and audible vibration that I just pull it into neutral and coast until it goes away. It will grind at times going into 2nd and 5th. It has popped out of gear in 5th many times. Suspecting clutch and flywheel. Thanks for any help.

January 3rd, 2012, 11:14 PM	#2
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	Possible the clutch is not alinded right. __________________ 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

January 5th, 2012, 09:29 PM	#5
gripthenboost Hardcore Enthusiast 91 Mustang GT 1991 sliver GT Join Date: Apr 2010 Location: New York Posts: 1,213 iTrader: 0 reviews	pics of said home made car and ill tell you if its home made. __________________

January 6th, 2012, 12:16 AM	#6
FastStang91Lx I Post Entirely Way Too Much 1991 Mustang LX 5.0 Join Date: Jan 2010 Location: Minnesota Posts: 5,572 iTrader: 2 reviews	And pics of said chimps who did the modding... __________________ Point made in less than a few hours with minimal response. http://www.moddedmustangs.com/forums...ml#post4465184

April 12th, 2012, 08:06 PM	#8
FastStang91Lx I Post Entirely Way Too Much 1991 Mustang LX 5.0 Join Date: Jan 2010 Location: Minnesota Posts: 5,572 iTrader: 2 reviews	Vibration at certain rpm can be as simple as u joints. You have to remove the driveshaft to check. It's not just a 'wiggle it and it feels good' thing. __________________ Point made in less than a few hours with minimal response. http://www.moddedmustangs.com/forums...ml#post4465184

January 4th, 2012, 01:55 AM	#3
thisguysride Regular 1991 gt convertible Join Date: Dec 2011 Location: Colorado springs Posts: 60 iTrader: 0 reviews	the gears grinding could be a clutch issue, the popping out of fifth gear would almost make me think tranny internal problem, but then again if your clutch is out of wack you may not be going into gear completely. one thing i would try is once your in fifth gear, without touching the clutch let off the accelerator and pull the shifter down as if trying to slide it into gear. take not as to if it seems to completly slide int o gear and afer your do so note as to weather it pops out of gear after doing this.. if its a brand new clutch it could be grabbing alot. even when shifting. i had this problem on my cummings when i put a heavy towing clutch in. grabbed way more than it should have when shifting, did this for anout 2k miles till it wore itself in. then never had the problem again. you could also have a broken spring on the clutch...

January 5th, 2012, 11:15 AM	#4
Spinetingler Newbie 1994 Join Date: Jan 2012 Location: Iowa Posts: 8 iTrader: 0 reviews	Thanks guys! Also if I go for a high RPM launch...it will slip as though it is not even in gear. I have to do a rolling launch or it slips terribly. Not sure if too much motor for the clutch/tranny or just another incompetent mod from the previous owner. Car is referred to as a "home made" car by a technician buddy of mine. LOL!

April 12th, 2012, 05:10 PM	#7
Spinetingler Newbie 1994 Join Date: Jan 2012 Location: Iowa Posts: 8 iTrader: 0 reviews	Also, at speed between 65 and 75 will get tremendous vibration that shakes entire car and shifter shakes so hard that you can hear it rattle in the opening of for the tranny. Below 65-75 and is very smooth as if nothing wrong. Also get weak vibration at exactly 2500 RPM. Will try to get pics up soon so everyone can get a good laugh. Previous owner painted it yellow. Looks like a hi-liter!

May 14th, 2012, 11:19 AM	#10
Spinetingler Newbie 1994 Join Date: Jan 2012 Location: Iowa Posts: 8 iTrader: 0 reviews	Drive shaft and U joints have been replaced. Still have the same shuttering/vibration at 65-75 Mph. Have not had driveshaft checked to see if it is balanced. Nothing changed from the swap of the U joints and shaft though. Very much looking strongly at clutch and tranny internals.

May 14th, 2012, 07:59 PM	#12
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	I think ive met one of those chimps..... they put in my motor mounts afew years back, using some over sized nut as a spacer...... i have no idea why.... i didnt find this out until i swaped in my new motor __________________ 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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