Anyone using polyurethane trans. mount
Thread Starter
Racer
Joined: Sep 2004
Posts: 469
Likes: 81
From: Saint Marys Pennsylvania
Anyone using polyurethane trans. mount
I just received my Energy Suspension polyurethane trans.mount and it is about 1/2 inch taller than the factory mount. Is this going to cause a problem with driveline angle or vibration. Anyone else using this mount, Thanks, Bob
Burning Brakes
Joined: Jan 2006
Posts: 957
Likes: 6
From: Burlington wisconsin
:
lurk:
Also curious......I have one here and wondered the same thing. Dont believe it will hurt, but leary enough where I havent installed it yet.
Also curious......I have one here and wondered the same thing. Dont believe it will hurt, but leary enough where I havent installed it yet.
Le Mans Master
Joined: Aug 2000
Posts: 6,362
Likes: 7
From: Brazos TX
Cruise-In IV Veteran
Cruise-In V Veteran
I don't remember what brand mine is but I think I remember a similar issue. Haven't had any problems with the poly mount. It is certainly better than the 2 or 3 rubber ones I went through before installing this one.
Melting Slicks
Joined: Nov 2001
Posts: 2,668
Likes: 43
From: Eastern US XX
This is a known issue with the ES trans mount and ES has never corrected it - it has been discussed here in the past more than once. Most people use a stock trans mount with the ES Motor mounts (as I will probably to do). I only remember of one person who said they actually used the ES Poly trans mount (anyway!).
Premium Supporting Vendor
Joined: May 2000
Posts: 4,312
Likes: 70
From: Clearwater FL
This is a known issue with the ES trans mount and ES has never corrected it - it has been discussed here in the past more than once. Most people use a stock trans mount with the ES Motor mounts (as I will probably to do). I only remember of one person who said they actually used the ES Poly trans mount (anyway!).
Instructor
Joined: Dec 2006
Posts: 131
Likes: 0
From: Flushing Mich
Racer
Joined: Jan 2007
Posts: 325
Likes: 0
From: Ocala FL
Is that 1/2 inch taller than a new factory mount or a used one? Rubber compresses quite a bit over time.
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Melting Slicks
Joined: Nov 2001
Posts: 2,668
Likes: 43
From: Eastern US XX
Burning Brakes
Joined: Feb 2006
Posts: 1,024
Likes: 1
From: AL
i have urethane tranny and engine mounts on mine - no drivetrain vibration. i'll have to look up the brand and post later. the original factory type was so mangled, i wouldn't have known of the height difference. in fact, the new engine and tranny mounts may have fixed a vibration . . .
Melting Slicks
Joined: Aug 2003
Posts: 2,135
Likes: 2
From: Dayton Oh
I was using the Energy Suspension polyurethane trans.mount on my 79's TH350 before replacing it with a BTO 2004R tranny and a BTO xmember. I did not experience any vibrations with the TH350 nor have I had any with the 2004R using the same mount. When replacing the original I noted that the ES was thicker but dismissed it as being new compared to my mangled original.
Melting Slicks
Joined: Nov 2001
Posts: 2,668
Likes: 43
From: Eastern US XX
Sorry for the delay!
Here's what I have:
1 - New - Energy Suspension "Kit" - Motor Mounts + Trans Mount
1 - New - GM Trans Mount
Here's what I found:
The Trans Mounts are essentially the same dimensions (metal to metal) in every way. The only difference with the ES mount is that there are 2 "dimples" on the bottom that protrude about 1/16 inch below the bottom of the metal surface - they are in the center about 3/4 inch apart where there is more poly than metal - they will surely compress when the bolts are tightened.
There ya have it - measured with digital calipers and all! I'm psyched - I can use the Poly mount now!
Here's what I have:
1 - New - Energy Suspension "Kit" - Motor Mounts + Trans Mount
1 - New - GM Trans Mount
Here's what I found:
The Trans Mounts are essentially the same dimensions (metal to metal) in every way. The only difference with the ES mount is that there are 2 "dimples" on the bottom that protrude about 1/16 inch below the bottom of the metal surface - they are in the center about 3/4 inch apart where there is more poly than metal - they will surely compress when the bolts are tightened.
There ya have it - measured with digital calipers and all! I'm psyched - I can use the Poly mount now!
Melting Slicks
Joined: Sep 2004
Posts: 2,412
Likes: 3
I have it underneath my T56, the driveshaft is really close to the seam in the tunnel underneath the e-brake. There is no way that I could have fit the mount and the supplied plate in there, too tight.
No vibrations though.
I was thinking about taking it out and shaving off 1/2" or so. The embeded metal plate is pretty thick...
No vibrations though.
I was thinking about taking it out and shaving off 1/2" or so. The embeded metal plate is pretty thick...
Melting Slicks
Joined: Sep 2004
Posts: 2,412
Likes: 3
Sorry for the delay!
Here's what I have:
1 - New - Energy Suspension "Kit" - Motor Mounts + Trans Mount
1 - New - GM Trans Mount
Here's what I found:
The Trans Mounts are essentially the same dimensions (metal to metal) in every way. The only difference with the ES mount is that there are 2 "dimples" on the bottom that protrude about 1/16 inch below the bottom of the metal surface - they are in the center about 3/4 inch apart where there is more poly than metal - they will surely compress when the bolts are tightened.
There ya have it - measured with digital calipers and all! I'm psyched - I can use the Poly mount now!
Here's what I have:
1 - New - Energy Suspension "Kit" - Motor Mounts + Trans Mount
1 - New - GM Trans Mount
Here's what I found:
The Trans Mounts are essentially the same dimensions (metal to metal) in every way. The only difference with the ES mount is that there are 2 "dimples" on the bottom that protrude about 1/16 inch below the bottom of the metal surface - they are in the center about 3/4 inch apart where there is more poly than metal - they will surely compress when the bolts are tightened.
There ya have it - measured with digital calipers and all! I'm psyched - I can use the Poly mount now!
Melting Slicks
Joined: Nov 2001
Posts: 2,668
Likes: 43
From: Eastern US XX
Did you compare a new ES with a new GM? Also there is a different mount for the Auto vs. 4 spd for earlier C3 years. What year is your vette?
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
So ... what are the dimensions of each? Regardless when they were bought ... what are dimensions of each?
Melting Slicks
Joined: Sep 2004
Posts: 2,412
Likes: 3
78, originally auto.
