Urethane tranny mount - thumbs DOWN
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Joined: Aug 2007
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From: Cypress, TX
Urethane tranny mount - thumbs DOWN Well, I felt that familiar thud on the floorboard yesterday, which has been
indicative of a whacked tranny mount. That would be the 4th in 9 months!
Today, I knew I had a "left over" urethane tranny mount from the 3-point
kit I bought (2 engine / 1 tranny kit from Prothane). I've already installed
the urethane engine mounts, but hesitated installing the tranny mount
because Dave at Yank recommended against using it and because of all the
folks out in LT-land recommended against it.
But ... I had a borked tranny mount and I wanted to at least be able to drive
the car at a moments whim, so I swapped out the broken mount with the
urethane mount. Twenty minutes later, I'm done.
OUCH! As soon as I fired up the car, I knew I didnt want this mount to live
much longer on the tailhousing. Sure, I could live with it, but it is VERY
annoying - the vibrations are distracting, even if it means the women will like it
My recommendation - stay away from the urethane tranny mount !
indicative of a whacked tranny mount. That would be the 4th in 9 months!
Today, I knew I had a "left over" urethane tranny mount from the 3-point
kit I bought (2 engine / 1 tranny kit from Prothane). I've already installed
the urethane engine mounts, but hesitated installing the tranny mount
because Dave at Yank recommended against using it and because of all the
folks out in LT-land recommended against it.
But ... I had a borked tranny mount and I wanted to at least be able to drive
the car at a moments whim, so I swapped out the broken mount with the
urethane mount. Twenty minutes later, I'm done.
OUCH! As soon as I fired up the car, I knew I didnt want this mount to live
much longer on the tailhousing. Sure, I could live with it, but it is VERY
annoying - the vibrations are distracting, even if it means the women will like it
My recommendation - stay away from the urethane tranny mount !
Thread Starter
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Joined: Aug 2007
Posts: 418
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From: Cypress, TX
The aggravation are the vibrations - I feel every bit of the tranny's nuances.
I've read that many folks "upgrade" using the LSx tranny mount.
Prothane tranny mount has no metal plate also the prothane is closer to the height of the stock tranny mounts so it doesn't throw the pinion angle way off.
the Energy suspension mount has a metal torque plate and I found out the hard way a couple times that if you don't use it it will break and twist itself in half. Plus the ES mount is a lot taller than stock so it throws off the torque arm and pinion angle.
They do transmit vibration but they soften up after a while and end up not transmitting nearly as much vibration. really its a tough call though.. stock mounts break like nothing. Polys (at least the Porothane mount) won't break constantly but do transmit vibration and will change the pinion angle which in itself will probably cause vibrations as well.
the Energy suspension mount has a metal torque plate and I found out the hard way a couple times that if you don't use it it will break and twist itself in half. Plus the ES mount is a lot taller than stock so it throws off the torque arm and pinion angle.
They do transmit vibration but they soften up after a while and end up not transmitting nearly as much vibration. really its a tough call though.. stock mounts break like nothing. Polys (at least the Porothane mount) won't break constantly but do transmit vibration and will change the pinion angle which in itself will probably cause vibrations as well.
Thread Starter
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Joined: Aug 2007
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From: Cypress, TX
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Verdad Gallardo Thread Starter
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Joined: Aug 2007
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From: Cypress, TX
tranny mount. Fairly new urethane (Prothane) engine mounts, new FLT
tranny . . . all other mount points are tight and correct.