Vibration between 2-3000RPM
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Vibration between 2-3000RPM
I looks like I have some vibration between 2000RPM and 3000RPM in every gear and it goes away above 3000RPM. I just installed the Tremec TKO 600 and I do not recall this vibration before with the old tranny. I have a Centerforce clutch which was removed and re-installed during the tranny swap. I installed a pre-80 crossmember with the correct tranny mount for the new TKO. Everything else is the same.
It is not speed related as I get it in every gear and I can feel it in the shifter. I can cruise at 2000RPM and it is smooth but once I go above that the vibration starts. The new tranny is great and I am at about 2000RPM at 80MPH on the highway but this vibration is really taking the joy out of it
It is not speed related as I get it in every gear and I can feel it in the shifter. I can cruise at 2000RPM and it is smooth but once I go above that the vibration starts. The new tranny is great and I am at about 2000RPM at 80MPH on the highway but this vibration is really taking the joy out of it
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From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Wayne,
When I put my Tremec in mine I had a vibration also that I didn't have with the muncie. I finally got rid of it by adjusting the pinion angles. What I basically did was put a set of ramps out in the drive way. I would pull the car up on the ramps and add shims/washers to the rear mount on the tranny. This pulled the tail shaft up in relation to the rear diff. I kept adding washers till the vibrations were gone. It wound up being as high as I could get the tranny in the tunnel. Hopefully this will help you too.
I believe Signguy and I were working on the same problem at the same time. I will see if I can find one of the old threads.
When I put my Tremec in mine I had a vibration also that I didn't have with the muncie. I finally got rid of it by adjusting the pinion angles. What I basically did was put a set of ramps out in the drive way. I would pull the car up on the ramps and add shims/washers to the rear mount on the tranny. This pulled the tail shaft up in relation to the rear diff. I kept adding washers till the vibrations were gone. It wound up being as high as I could get the tranny in the tunnel. Hopefully this will help you too.
I believe Signguy and I were working on the same problem at the same time. I will see if I can find one of the old threads.
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Eddie, I don't think it's pinion angle as this vibration happens at a certain RPM not speed. I can cruise at 80MPH at 2000RPM and no vibration or 50MPH in 4th at 2000RPM no vibration, just give some gas to 2300RPM and there iit is. I am not ruling anything out at this point though
Mike, I reused the roller pilot bearing I had in there, it was new when I built the motor less than 2000 miles ago, so it is in good condition, I also checked it. Unless the input shafts ( part that goes into the pilot bearing ) are different size from a Super T10 to the Tremec TKO then I don't think that's the problem
Mike, I reused the roller pilot bearing I had in there, it was new when I built the motor less than 2000 miles ago, so it is in good condition, I also checked it. Unless the input shafts ( part that goes into the pilot bearing ) are different size from a Super T10 to the Tremec TKO then I don't think that's the problem
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Update
I think it is the CenterForce clutch. I was just revving it up in neutral with the clutch engaged and I can feel the vibration and it goes away almost completly when I push the clutch in ( clutch disengaged ) If it is the clutch I am not very happy about this and I am contacting Centerforce to see if they will come clean about this
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From: San Antonio TX
The vibration may be going away when you push in on the clutch because of the force you're applying through the linkage is slightly moving the engine/drivetrain.
You may be dealing with a harmonic that has nothing at all to do with the drivetrain.
It could be a misfire or some cylinders not fully contributing. It could be something loose in the accessory drives(even a loose belt). It could be a bad or loose motor mount. It could be something in the drivetrain contacting the frame or body. It could be an exhaust pipe contacting the frame or body or too tightly conntected on a hangar.
A lot of things can cause a felt vibration or set up sympathetic vibration amplified in the body.
Before you tear out the clutch, check the easy stuff first. If it were the clutch, it would tend to be a centrifugal imbalance and those always get worse with rpm.
You may be dealing with a harmonic that has nothing at all to do with the drivetrain.
It could be a misfire or some cylinders not fully contributing. It could be something loose in the accessory drives(even a loose belt). It could be a bad or loose motor mount. It could be something in the drivetrain contacting the frame or body. It could be an exhaust pipe contacting the frame or body or too tightly conntected on a hangar.
A lot of things can cause a felt vibration or set up sympathetic vibration amplified in the body.
Before you tear out the clutch, check the easy stuff first. If it were the clutch, it would tend to be a centrifugal imbalance and those always get worse with rpm.
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Interesting, I did get a 3 inch exhaust installed at the same time as the new tranny that is pretty tight going thru the crossmember and in a few other places, I dread removing the tranny, thanks
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From: Forked River NJ
Did you indicate the bellhousing. If the trans is a little off from the crank center line this would cause a vibration. When the clutch is in the trans shaft is not spinning. Just a thought. 
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Bellhousing runout was 0.0015" so I don't think that is a problem. On thing I noticed was that Centerforce recommends a "self centering" throwout bearing. THis bearing has an off center hole in the middle that looks defective and the reason I thru mine out and bought a stock one 
I posted a picture of this bearing when I was putting in the new tranny and no one new anything about it. I am not sure any documentation about this "self centering" throwout bearing came with the clutch but it is on thier website now. I do know that I did have one of these "self centeriing" bearings in the car prior to any vibration problems
I posted a picture of this bearing when I was putting in the new tranny and no one new anything about it. I am not sure any documentation about this "self centering" throwout bearing came with the clutch but it is on thier website now. I do know that I did have one of these "self centeriing" bearings in the car prior to any vibration problems
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Any other ideas ? Musta had a brain fart when I thinking that pushing my foot on the clutch took the whole clutch assembly out of play when in fact it is bolted to the flywheel. I would only be taking the clutch disc out of play
Last edited by MotorHead; May 17, 2005 at 01:40 PM.
Thread Starter
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
I hope not the tranny is brand new TKO 600, but not ruling anything out, has all the symptoms of a input shaft bearing, just not high on the list because it is a new tranny.
