Having problems with vibrations after clutch install Please help.

zepherman · 05-16-2002, 11:09 PM

Just insalled a SPEC sage 1 clutch. After instaling it, i feel horrid vibraions through the shifter between 2500 and 3000 rpm. with the trans in neutral, i rev the engine and i can feel a little vibrtion as it passes the same rpm. The clutch works fine mechanically except for the vibration. Everything was fine before i put in the new clutch. I installed the previous clutch with no problems. i replaced everything but the pilot bearing because it was replaced last time and it wasnt that long ago. I also had th flywheel resurfaced by a local O'reillys.

Thanks for your time,
Adam

MustangGT · 05-17-2002, 12:15 AM

I once had a clutch cover that was missing a balance wight that acted very simular. Does it act the same way with or without the pedal depressed?

MustangGT

zepherman · 05-17-2002, 12:22 AM

MustangGT · 05-17-2002, 12:59 AM

Adam, I think I would make sure your exhaust isnt hitting anywhere causing this vibration and take a good look at the rotating clutch components. Assuming the pilot bearing is there and in good shape and the clutch plate is properly mounted to the flywheel and transmission tight on both ends, I'd consider pulling the clutch backout.

Just a thought.

MustangGT

briand · 05-17-2002, 08:35 AM

another thing you might want to consider is when you had your flywheel turned, was the machine true? I worked at oreilly's for about a year and a half and the machine we had was not perfectly true, so i would assume that a out of balance flywheel will cause this type of vibration

Mr 5 0 · 05-17-2002, 09:24 AM

briand has a good point. Sounds like a possible flywheel problem.

I replaced my flywheel with a new one when I did my clutch replacement. Eliminates the vibration problem and no worries about a cracked flywheel, either.

I have a near-stock 5.0 , have only had to do one clutch replacement since I've owned the car and I could go with the stock-quality iron flywheel for $100. so it was worth it. A steel flywheel is $225.

If you do frequent clutch replacements on a high HP Mustang this may not always be practical. Good insurance, though..

7000rpmisheaven · 05-17-2002, 10:15 AM

I would also check the front end. If the rubber seals on the vibration damper are worn or out of place it may be time to replace that also. Its worth checking at least.

05-16-2002, 11:09 PM	#1
zepherman Registered Member Join Date: May 2001 Location: Oklahoma City OK USA Posts: 236	Having problems with vibrations after clutch install Please help. Just insalled a SPEC sage 1 clutch. After instaling it, i feel horrid vibraions through the shifter between 2500 and 3000 rpm. with the trans in neutral, i rev the engine and i can feel a little vibrtion as it passes the same rpm. The clutch works fine mechanically except for the vibration. Everything was fine before i put in the new clutch. I installed the previous clutch with no problems. i replaced everything but the pilot bearing because it was replaced last time and it wasnt that long ago. I also had th flywheel resurfaced by a local O'reillys. Thanks for your time, Adam __________________ 90 GT 25th Anni. Did the AOD to T-5 swap, SPEC clutch, Steeda Tri-Ax shifter, BBK 2½ inch off-road H pipe, Flows, BBK 70mm TB/EGR, Ford Racing aluminim driveshaft, 3.55's, welded subframes, Ram Air, 3 core radiator, NOS dry kit 75 shot, and a K&N filter. 12.9 @ 108

05-17-2002, 12:22 AM	#3
zepherman Registered Member Join Date: May 2001 Location: Oklahoma City OK USA Posts: 236	yes __________________ 90 GT 25th Anni. Did the AOD to T-5 swap, SPEC clutch, Steeda Tri-Ax shifter, BBK 2½ inch off-road H pipe, Flows, BBK 70mm TB/EGR, Ford Racing aluminim driveshaft, 3.55's, welded subframes, Ram Air, 3 core radiator, NOS dry kit 75 shot, and a K&N filter. 12.9 @ 108

05-17-2002, 08:35 AM	#5
briand Registered Member Join Date: Mar 1999 Location: Jackson, LA Posts: 264	another thing you might want to consider is when you had your flywheel turned, was the machine true? I worked at oreilly's for about a year and a half and the machine we had was not perfectly true, so i would assume that a out of balance flywheel will cause this type of vibration __________________ GT-40X heads(58cc), Cobra upper and lower, 75 mm Bullet, Moroso fenderwell induction, FRPP 65mm TB, 24# injectors, black magic electric fan, phenolic spacer, 1.7 crane cobra roller rockers, crane 2031, BBK 1 5/8 equal length hearders, 2.5 inch off road pipe, 2.5 flowmaster catback, FMS 3.55 gears, T5-Z transmission, FRPP aluminum driveshaft, svo heavy duty clutch, mcleod bullet proff bellhousing, BBK adjustable cluth quadrant, hurst billet shifter, lakewood subframes, BBK strut tower brace, BBK 2pt lower cross bar, FMS 190 lph fuel pump, crane ps91 coil, FMS street pulleys, and 300+ race wires. All thanks goes to my wife sheri, jason, jeff, robby, my dad and all others you helped contribute. most importantly GOD!!!

05-17-2002, 09:24 AM	#6
Mr 5 0 Conservative Individualist Join Date: May 1997 Location: Wherever I need to be Posts: 7,487	Bad vibes briand has a good point. Sounds like a possible flywheel problem. I replaced my flywheel with a new one when I did my clutch replacement. Eliminates the vibration problem and no worries about a cracked flywheel, either. I have a near-stock 5.0 , have only had to do one clutch replacement since I've owned the car and I could go with the stock-quality iron flywheel for $100. so it was worth it. A steel flywheel is $225. If you do frequent clutch replacements on a high HP Mustang this may not always be practical. Good insurance, though..

05-17-2002, 10:15 AM	#7
7000rpmisheaven Registered Member Join Date: Nov 2001 Location: germantown MD Posts: 283	I would also check the front end. If the rubber seals on the vibration damper are worn or out of place it may be time to replace that also. Its worth checking at least. __________________ 85 GT 4bbl roller cam 2 ch. Flowmasters, O/R H-pipe Performer intake and carb milodon water pump, FMS 9mm wires, aluminum driveshaft, king cobra clutch

05-17-2002, 12:15 AM	#2
MustangGT Registered Member Join Date: May 2002 Location: Northern California Posts: 9	I once had a clutch cover that was missing a balance wight that acted very simular. Does it act the same way with or without the pedal depressed? MustangGT

05-17-2002, 12:59 AM	#4
MustangGT Registered Member Join Date: May 2002 Location: Northern California Posts: 9	Adam, I think I would make sure your exhaust isnt hitting anywhere causing this vibration and take a good look at the rotating clutch components. Assuming the pilot bearing is there and in good shape and the clutch plate is properly mounted to the flywheel and transmission tight on both ends, I'd consider pulling the clutch backout. Just a thought. MustangGT

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