January 17, 2019, 03:52:02 PM

Author Topic: Transmission mount Installation  (Read 9454 times)

Offline justinsamberg

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Transmission mount Installation
« on: July 30, 2010, 06:19:25 PM »
I just wanted to give some brief instructions on how to install the trans mount.

First bolt the mount to the trans.

second, remove the heat shielding from the tunnel. You can ether completely remove it or just trim out the area were the mount goes, like this guy did.

This is mount is one of the first made and has a straight piece of tubing.

Third, support the trans using a floor jack.

Fourth, using a "tape measure" you should be able to read 5 1/2" off the tunnel to the center of the output shaft.


Before you mark the holes for drilling, make sure that the mount looks square in relationship to the tunnel. Once this is done you can mark the holes with a sharpie. When drilling sheet metal I always like to use a "Unibit" but a regular bit is fine too. 13/32" for the 3/8" bolt and 9/32" for the 1/4". 



Your going to have to drill the 4 large holes first from under the car, then install the backing plates from the inside of the car, so you can mark the 2 small holes used to retain the plate when the mount is removed.

I'm going to leave this thread open so people can ad to it. Once it looks good I'll delete the unwanted stuff and lock it up.
« Last Edit: July 30, 2010, 11:47:51 PM by justinsamberg »
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Offline DRTHVDR

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Re: Transmission mount Installation
« Reply #1 on: August 11, 2010, 09:58:43 AM »
How do I know if the alignment is just right for the driveshaft in a Left-Right direction?
I'd hate to have to start searching for drivetrain vibrations.

You don't need a better ride, your ride needs a better driver.
93 RX-7 R1 CYM: Bastard
Other: 06 330ci ZHP, 11 Odyssey

Offline ProjectD

Re: Transmission mount Installation
« Reply #2 on: August 11, 2010, 11:55:20 AM »
As long as you install the mount level, it will center it self. There is no way to adjust it side to side.

Offline Troux

Re: Transmission mount Installation
« Reply #3 on: August 20, 2010, 12:48:11 PM »
As long as you install the mount level, it will center it self. There is no way to adjust it side to side.

Correction, there is no way to adjust the Samberg mount side to side, however the aftermerket polyurethane mount (and maybe stock, I forgot) has slots in it so that it can move side to side. Centering it as much as possible should work, but it's not a bad idea to have a way to measure this.

Offline kukri

Re: Transmission mount Installation
« Reply #4 on: October 10, 2010, 10:01:32 PM »
Just FYI I had to trim the driver's side cabin plate a little bit

'00 S2000 all original - current
'93 Base LSX 485 whp - sold
'93 Touring LS1 - sold
'90 TII 383ci SBC - sold
'88 GTU 302ci SBF - sold

Offline rex7fd

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Re: Transmission mount Installation
« Reply #5 on: November 11, 2010, 09:08:22 PM »
When I installed my mount I had a measurement of 6 and 1/8 of an inch from the transmission tunnel.
94 FD/2002 LS6, 228/230 Comp Cam,  With Comp Cam everything,  Atomic Rex 360mm 6 pot frontsx 330mm 4 pots rears, Samberg everything, ARP everything,ported Lingenfelter TB, Ram twin plate. Nor Cal AG T-56. RUNNING!!!!!!!!!!!!!!!!!!!!!! 390whp/390tq

Offline DRTHVDR

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Re: Transmission mount Installation
« Reply #6 on: November 12, 2010, 09:17:16 AM »
Mine is in about the exact same spot.

You don't need a better ride, your ride needs a better driver.
93 RX-7 R1 CYM: Bastard
Other: 06 330ci ZHP, 11 Odyssey

Offline mdpalmer

Re: Transmission mount Installation
« Reply #7 on: December 19, 2010, 08:28:18 PM »
Did you guys completely remove the carpet? I tried to fold it up far enough to get the backing plates in and it's awkward as hell. Really don't want to pull it all out if I don't have to.
Mike
1993 SSM FD3S LS1 Rx-7 :o SOLD  :'(
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Offline DRTHVDR

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Re: Transmission mount Installation
« Reply #8 on: December 20, 2010, 08:18:26 AM »
I pulled mine back.  I was sweaty, dirty, and annoyed but I got it done.

You don't need a better ride, your ride needs a better driver.
93 RX-7 R1 CYM: Bastard
Other: 06 330ci ZHP, 11 Odyssey

Offline mdpalmer

Re: Transmission mount Installation
« Reply #9 on: December 20, 2010, 11:54:29 AM »
Did any of you end up with a little bit of clearance on the pass side mount (one with the bent mount plate)? I have just enough room to stuff thin washers through the gap between the plate and tunnel... can't get it to butt up against the tunnel wall.
Mike
1993 SSM FD3S LS1 Rx-7 :o SOLD  :'(
My Build Thread
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Offline digitalsolo

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Re: Transmission mount Installation
« Reply #10 on: December 20, 2010, 11:59:50 AM »
On BeasTT's car, we attached it to the transmission and lift the tranny until the mount was wedged (lightly) in the tunnel, so there was no clearance.
Blake MF'ing McBride
1988 Mazda RX7 - Turbo LS1/T56/ProEFI/8.8/Not Slow...   sold.
1965 Mustang Coupe - TT Coyote, TR6060, modern brakes/suspension...  project car
2013 Focus ST3 - Stage 1 BPU

Offline r71

Forward - backward
« Reply #11 on: October 24, 2011, 06:58:16 PM »
So, this might be a dumb question. How do you measure forward and backward position?

Do you?

1. Install engine/tranny, mark the holes, pull the engine/tranny, then drill and reinstall? or

2. Do you install engine/tranny, mark the holes, and just lower the tranny enough to drill? Would this put an awkward strain on the motor mounts - subframe?

Just remember, I'm a noob and I'm sticking to it.
94 FD
LS1 from 04 GTO
In Progress.....Almost done... Almost...

Some wheelie action:

Build thread: http://www.norotors.com/index.php?topic=8308.msg116732#msg116732

Offline digitalsolo

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Re: Transmission mount Installation
« Reply #12 on: October 25, 2011, 01:28:49 AM »
Install engine/tranny, put the mount on, mark the holes, drop the mount off, drill the holes, install the mount.     No need to pull the engine back out to install the tranny mount. :)
Blake MF'ing McBride
1988 Mazda RX7 - Turbo LS1/T56/ProEFI/8.8/Not Slow...   sold.
1965 Mustang Coupe - TT Coyote, TR6060, modern brakes/suspension...  project car
2013 Focus ST3 - Stage 1 BPU

Offline bimbleuk

Re: Transmission mount Installation
« Reply #13 on: October 25, 2011, 04:04:55 AM »
I guess the rubber/poly mount can make a difference to the vertical measurement. I'm using a Landrover engine mount as I forgot to order one with the kit plus I'm in the UK. So my mesurement ended up just over 6" if I remember but as I had my exhaust made to fit on the car I can't raise it any higher now. Been like it for over a year though.

Offline r71

Re: Transmission mount Installation
« Reply #14 on: October 25, 2011, 07:47:41 AM »
Install engine/tranny, put the mount on, mark the holes, drop the mount off, drill the holes, install the mount.     No need to pull the engine back out to install the tranny mount. :)

Thanks. Now I can sleep better.
94 FD
LS1 from 04 GTO
In Progress.....Almost done... Almost...

Some wheelie action:

Build thread: http://www.norotors.com/index.php?topic=8308.msg116732#msg116732