FMS ADS don't fit??

Mad Horse · 10-20-2004, 05:49 PM

OK so I am having my new T-5Z, King Cobra Clutch, and FMS aluminum driveshaft installed at a local shop. I get a call today and they say the driveshaft rubs the flang where the cat-back meet and that it rubs one side or edge of a muffler? Has anyone else experienced this? It is from Ford so I figured it would fit with no problem. Is there an easy fix so my mechanic don't rape me for putting extending the cross bar between the cats by 3"?

chatcher · 10-20-2004, 10:16 PM

i would think the exhaust was reinstalled incorrectly and they would have been the ones that reinstalled it improperly if they removed the tranny also ask them if it rubs once the car is on the ground it may be close when its on the lift if the rear is hanging down but once the rear is on the ground it should move the driveshaft away from the exhaust what exhaust pieces do you have stock or aftermarket and how old are they i cant think of anyone that i know having to widen the h-pipe

Mad Horse · 10-20-2004, 10:29 PM

chatcher you are dead on! I went to the shop tonight and looked at it for myself. I said the same exact thing to them about the rear suspension being unsprung on the lift. The other thing I noticed was the passenger side muffler (the one that is rubbing) is installed slightly incorrect. The pipe infront of the muffler has a slight curve to it and needs to be rotated to push the muffler out. Right now the curve faces down so it is just pushing the muffler up. I pointed this out to them and they agreed it should work. I have to admit that I was the one who installed the Cat-Back and am thus guilty

. I guess I didn't pay attention to how the curve was facing on the factory exhaust and installed it the way I did. Ofcourse I had no clue it would lead to problems 6 years later. LOL

They are going to heat it up and try to rotate it tom. morning. If all goes well I will get it back tom. with a whole new drivetrain!! Man I can't wait to see how she feels.

88fivepointoh · 10-22-2004, 09:29 AM

The problem is in the H-pipe.. I had the same issue with the rubbing.. the H-pipe was bent inwards and causing the issues. The after market shaft is obviously larger requiring more space.. But other the muffler inlet or H-pipe is at fault!

Fried One · 11-04-2004, 05:04 PM

I have seen the same on my car on the lift. Once it gets back on the ground it clears again.

10-20-2004, 05:49 PM	#1
Mad Horse Registered Member Join Date: Sep 1998 Location: Dayton, OH., United States Posts: 467	FMS ADS don't fit?? OK so I am having my new T-5Z, King Cobra Clutch, and FMS aluminum driveshaft installed at a local shop. I get a call today and they say the driveshaft rubs the flang where the cat-back meet and that it rubs one side or edge of a muffler? Has anyone else experienced this? It is from Ford so I figured it would fit with no problem. Is there an easy fix so my mechanic don't rape me for putting extending the cross bar between the cats by 3"? __________________ 88GT Performance Mods: 3.73 gears, T-5Z trans, King Cobra clutch, Pro 5.0, Alum. DS, WMS Xtrac subframes, DynoMax Cat-back, PS91 Coil, March alum. Pullies, Fluidyne Rad, Elec fan Cosmetic Mods: Color change interior & exterior, Cervinis Ram air hood, 16" Ponies, LX Taillights. "Nip it in the Bud"

10-20-2004, 10:16 PM	#2
chatcher Registered Member Join Date: Jun 2001 Location: butler pa Posts: 303	Re: FMS ADS don't fit?? i would think the exhaust was reinstalled incorrectly and they would have been the ones that reinstalled it improperly if they removed the tranny also ask them if it rubs once the car is on the ground it may be close when its on the lift if the rear is hanging down but once the rear is on the ground it should move the driveshaft away from the exhaust what exhaust pieces do you have stock or aftermarket and how old are they i cant think of anyone that i know having to widen the h-pipe __________________ 92lx wannabe saleen

10-20-2004, 10:29 PM	#3
Mad Horse Registered Member Join Date: Sep 1998 Location: Dayton, OH., United States Posts: 467	Re: FMS ADS don't fit?? chatcher you are dead on! I went to the shop tonight and looked at it for myself. I said the same exact thing to them about the rear suspension being unsprung on the lift. The other thing I noticed was the passenger side muffler (the one that is rubbing) is installed slightly incorrect. The pipe infront of the muffler has a slight curve to it and needs to be rotated to push the muffler out. Right now the curve faces down so it is just pushing the muffler up. I pointed this out to them and they agreed it should work. I have to admit that I was the one who installed the Cat-Back and am thus guilty . I guess I didn't pay attention to how the curve was facing on the factory exhaust and installed it the way I did. Ofcourse I had no clue it would lead to problems 6 years later. LOL They are going to heat it up and try to rotate it tom. morning. If all goes well I will get it back tom. with a whole new drivetrain!! Man I can't wait to see how she feels. __________________ 88GT Performance Mods: 3.73 gears, T-5Z trans, King Cobra clutch, Pro 5.0, Alum. DS, WMS Xtrac subframes, DynoMax Cat-back, PS91 Coil, March alum. Pullies, Fluidyne Rad, Elec fan Cosmetic Mods: Color change interior & exterior, Cervinis Ram air hood, 16" Ponies, LX Taillights. "Nip it in the Bud"

10-22-2004, 09:29 AM	#4
88fivepointoh Registered Member Join Date: Aug 2002 Location: Rochester Posts: 553	Re: FMS ADS don't fit?? The problem is in the H-pipe.. I had the same issue with the rubbing.. the H-pipe was bent inwards and causing the issues. The after market shaft is obviously larger requiring more space.. But other the muffler inlet or H-pipe is at fault!

11-04-2004, 05:04 PM	#5
Fried One Registered Member Join Date: Sep 2004 Location: Toronto Posts: 11	Re: FMS ADS don't fit?? I have seen the same on my car on the lift. Once it gets back on the ground it clears again.