Vibrations after new trans mount installation!
09-26-2006, 07:07 PM
#1
Vibrations after new trans mount installation! I just put a Energy Suspension poly trans mount on my car and now I have some vibrations.I think it may be the motor mounts,or could it just be the more soild mount not absoring the engine vibrations. What do you guys think?
09-26-2006, 08:05 PM
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They just make the console rattle because the mount is no longer absorbing drivetrain vibrations like it use to when it was soft rubber.
I would only use one if I had a problem with the stock mount failing.
Poly engine and trans mounts together are too much for some people.
Dean
I would only use one if I had a problem with the stock mount failing.
Poly engine and trans mounts together are too much for some people.
Dean
09-26-2006, 11:39 PM
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I have one in mine the energy suspensions one, and i noticed no diffrence in vibrations. I do have an M6 tho so that probibly makes a whole bunch f diffrence, Also did you put that plate on with the mount (not suposed to) and did you grind away the two bumps before installing? That could be your problem because if you didnt that is going to change you pinion angle. The only way i have seen to get away with installing the plate is having an adj torque arm so you can reset the pinion angle. I have one and just havent got around to putting the plate back in, and readjusting.
This thread is a good resourse:
https://ls1tech.com/forums/showthrea...ly+trans+mount
This thread is a good resourse:
https://ls1tech.com/forums/showthrea...ly+trans+mount
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09-27-2006, 09:29 AM
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Yes I have read that if you have nastly vibrations in 3rd gear (1:1) then your pinion angle is probably off. This is because your whole driveline is turning at the same speed.
09-27-2006, 01:54 PM
#9
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I have the energy suspension poly mount as well, and used that plate, and did not grind the little ***** off, and experance no unpleasent vibrations that I've noticed. Should I un install it and grind those things away?
09-27-2006, 11:39 PM
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I would check pinoin angle before takeing it all back apart, just to know were you stand. you can get and angle meter or what ever its called at lowes or home dept.
09-28-2006, 03:47 PM
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The energy suspension mount bushing, when installed properly with the back-plate, is taller than stock by exactly the thickness of the back-plate. This causes misalignment and vibration from the u-joints. Since you cant run the ES mount without the plate, you need to shim the crossmember down. I just got four washers as close to the thickness of the plate as possible and installed them between the cross-member and the floor. No more vibrations!!
09-28-2006, 03:53 PM
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if he's got a stock torque arm pinion angle should change.
did you undo the drive shaft? if so try taking it back out and spin it a half turn and put it back on.
but like everyone else say, its probably just the mount.
did you undo the drive shaft? if so try taking it back out and spin it a half turn and put it back on.
but like everyone else say, its probably just the mount.
11-19-2006, 12:41 PM
#13
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Originally Posted by blkchevyz
if he's got a stock torque arm pinion angle should change.
did you undo the drive shaft? if so try taking it back out and spin it a half turn and put it back on.
but like everyone else say, its probably just the mount.
did you undo the drive shaft? if so try taking it back out and spin it a half turn and put it back on.
but like everyone else say, its probably just the mount.
What would spinning it do??? Does this rebalance it?? LMK Thanks..
11-20-2006, 09:07 AM
#14
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Originally Posted by NITROUSLS1
What would spinning it do??? Does this rebalance it?? LMK Thanks..
Go to energy suspensions website and dig around for info on that mount. They will say that they do not make one for 93-02 F-bodys. And that there plain GM mount (the one you probably got) "Will work with minor crossmember modification."
Its too tall by 1/8". This throws both front and rear u-joint angles into and condition where they slightly bind and cause vibration.
Lowering the crossmember 1/8" will completely correct this condition and make the vibration stop. With the exception of the additional engine vibrations you'll feel due to the harder bushing material
11-20-2006, 10:04 AM
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Originally Posted by Fire67
No, and fwiw Ive never had driveshaft orientation cause or fix a vibration. Driveshafts are zero balanced, and they are not balanced on a car or attached to rear end/transmission for that matter. So when they initially install a driveshaft from the factory they dont care about its clocking because it doesnt matter.
Go to energy suspensions website and dig around for info on that mount. They will say that they do not make one for 93-02 F-bodys. And that there plain GM mount (the one you probably got) "Will work with minor crossmember modification."
Its too tall by 1/8". This throws both front and rear u-joint angles into and condition where they slightly bind and cause vibration.
Lowering the crossmember 1/8" will completely correct this condition and make the vibration stop. With the exception of the additional engine vibrations you'll feel due to the harder bushing material
Go to energy suspensions website and dig around for info on that mount. They will say that they do not make one for 93-02 F-bodys. And that there plain GM mount (the one you probably got) "Will work with minor crossmember modification."
Its too tall by 1/8". This throws both front and rear u-joint angles into and condition where they slightly bind and cause vibration.
Lowering the crossmember 1/8" will completely correct this condition and make the vibration stop. With the exception of the additional engine vibrations you'll feel due to the harder bushing material
11-20-2006, 08:35 PM
#17
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Originally Posted by Fire67
The energy suspension mount bushing, when installed properly with the back-plate, is taller than stock by exactly the thickness of the back-plate. This causes misalignment and vibration from the u-joints.
11-21-2006, 10:50 AM
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I was told by the guy who built my tranny, to not use the metal plate that is supplied with the mount cause it will offset the pinion angle and will cause horrible vibration. So when I put the mount in, I didn't put the plate in and I dont have any vibration at all
