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Old 12-05-2004, 06:17 AM   #1
Aaron94
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Exhaust issues...

Hey everyone. i just recently put in a Pace Setter o/r X pipe in my 94. I was getting a vibration so i put the car back up on jack stands and noticed that the drivers tailpipe was resting on my torque arm, i guess the x-pipe was a bit longer than my old h-pipe. I got that issue fixed, and the vibration got better, but i still have one around 3k rpm, and then again around 5k i think. I dont really hear anything rattling anymore, but I can feel the vibration in the seat.

What do you all think about this? X-pipes = rattles/vibrations? motor mount go bad? the trans was out at the same time for a clutch, so i am going to get back under the car and re-torque everything again this weekend.

INPUT?!?!
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1994 Rio Red Coupe #3564

304 ci, GT40X Aluminum Heads, Extrude Honed and Polished intake, Motorsport F303 cam, vortech fuel rails, 77 mm Pro-M mass air, 70mm BBK T-Body, Smog pump deletion, MSD and Perfomance distributors ignition components, Tremec 3550, Steeda Tri-axe, King Cobra/Centerforce clutch, Custom 3" Alum Driveshaft, 3.55 Gears, Griggs rear suspension w/torque arm & pan hard bar, Koni Red Shocks/Struts
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Old 12-05-2004, 10:41 AM   #2
cobrapace94
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Did you put the driveshaft back in in the same location? The drive shafts are indexed, so re installing it in a different location could cause the vibration.
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1994 Cobra Indy Pace Car Convertible # 591 of 1000
2001 Cobra, #2001 of 3384 verts, Black on White, Born on 6/01/01
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Old 12-05-2004, 08:51 PM   #3
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The drive shaft is brand new, custom balanced 3" aluminum unit. It actually cured a vibration I had at around 85 mph with my FRPP Alum shaft. The vibration I have now is at all speeds, including when stopped, at 3k rpm. It has nothing to do with the driveline.
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1994 Rio Red Coupe #3564

304 ci, GT40X Aluminum Heads, Extrude Honed and Polished intake, Motorsport F303 cam, vortech fuel rails, 77 mm Pro-M mass air, 70mm BBK T-Body, Smog pump deletion, MSD and Perfomance distributors ignition components, Tremec 3550, Steeda Tri-axe, King Cobra/Centerforce clutch, Custom 3" Alum Driveshaft, 3.55 Gears, Griggs rear suspension w/torque arm & pan hard bar, Koni Red Shocks/Struts
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Old 12-09-2004, 02:05 AM   #4
cobrapace94
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Have you checked you harmonic balencer? The 94\95 balencers are known for going bad.
No other ideas?
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1994 Cobra Indy Pace Car Convertible # 591 of 1000
2001 Cobra, #2001 of 3384 verts, Black on White, Born on 6/01/01
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Old 12-09-2004, 02:07 AM   #5
Aaron94
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hmmm, ya i had pullies installed... could be an issue with that?
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1994 Rio Red Coupe #3564

304 ci, GT40X Aluminum Heads, Extrude Honed and Polished intake, Motorsport F303 cam, vortech fuel rails, 77 mm Pro-M mass air, 70mm BBK T-Body, Smog pump deletion, MSD and Perfomance distributors ignition components, Tremec 3550, Steeda Tri-axe, King Cobra/Centerforce clutch, Custom 3" Alum Driveshaft, 3.55 Gears, Griggs rear suspension w/torque arm & pan hard bar, Koni Red Shocks/Struts
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