Transmissions and Drivetrain Need help with your trans? Problems with your axle?

How to know right angle when installing mount and crossmember?

Thread Tools
 
Search this Thread
 
Old Mar 20, 2021 | 03:12 AM
  #1  
Annihilate's Avatar
Thread Starter
Senior Member
10 Year Member
Liked
Loved
Community Favorite
iTrader: (1)
 
Joined: Nov 2012
Posts: 672
Likes: 16
From: Michigan
Car: 1988 IROC-Z/G92
Engine: 5.0
Transmission: T-5
Axle/Gears: BW 3.45 Eaton Truetrac
How to know right angle when installing mount and crossmember?

Hello,

I am either re-installing my old rubber transmission mount, or installing the replacement transmission mount depending on if the threaded bit is too short or not for the new UMI crossmember.

My question is, how do you know the correct place to bolt down both the mount and crossmember? There is a lot of slack/wiggle room in either direction, and I want to make sure I get it right the first time.

Also, the longer part of the mount facing us in the picture goes towards the front of the car correct? I stupidly forget to note which way I took it out. Kicking myself all along the way, but i'm slowly learning.




Installing this unit...



Thanks!
Reply
Old Mar 20, 2021 | 05:01 PM
  #2  
Annihilate's Avatar
Thread Starter
Senior Member
10 Year Member
Liked
Loved
Community Favorite
iTrader: (1)
 
Joined: Nov 2012
Posts: 672
Likes: 16
From: Michigan
Car: 1988 IROC-Z/G92
Engine: 5.0
Transmission: T-5
Axle/Gears: BW 3.45 Eaton Truetrac
Re: How to know right angle when installing mount and crossmember?

Or am I supposed to wait till the rear is back in, and can properly attach the torque arm? Will everything essentially be pushed where it's supposed to be?
Reply
Old Mar 21, 2021 | 06:27 AM
  #3  
84 z28's Avatar
Supreme Member
 
Joined: Apr 2006
Posts: 1,801
Likes: 21
From: Rochester NY
Car: 1984 z28
Engine: 355
Transmission: 700r4
Axle/Gears: Moser 9" 4.11
Re: How to know right angle when installing mount and crossmember?

Just center everything as good as possible for now you can adjust later and yes you're correct for the transmission mount. Use the center hole for the rubber mount, aftermarket mount usually have 2 bolts instead of one thats why you have the 3 holes for the transmission crossmember mount. Also if you want the crossmember is usually only bolted up by 2 bolts on each side, there are actually 3 holes and now would be the time to tap the third hole if you want to use it
Reply
Old Mar 21, 2021 | 04:52 PM
  #4  
Annihilate's Avatar
Thread Starter
Senior Member
10 Year Member
Liked
Loved
Community Favorite
iTrader: (1)
 
Joined: Nov 2012
Posts: 672
Likes: 16
From: Michigan
Car: 1988 IROC-Z/G92
Engine: 5.0
Transmission: T-5
Axle/Gears: BW 3.45 Eaton Truetrac
Re: How to know right angle when installing mount and crossmember?

Wonderful, after playing around, I actually found the crossmember wouldnt even line up with the mount the other way.

As far as centering everything as good as possible, are there any downsides or negative factors that would occur if something was off? Even the transmission mount can shift forward and backward a bit, I assume it should be fully under the transmission and not hanging over the edge at all...

You wouldn't happen to know the torque specs for these bolts would ya?
Reply
Old Mar 21, 2021 | 04:59 PM
  #5  
sofakingdom's Avatar
Supreme Member
20 Year Member
Community Builder
iTrader: (1)
 
Joined: Sep 2005
Posts: 27,918
Likes: 2,448
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: How to know right angle when installing mount and crossmember?

Torque goes with hardware size. Always.

Most of the hardware is 10mm std thread (whatever that is... 1.5mm? iunno) Torque on that size is 40 - 45 ft-lbs.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
HorseflyDF
Transmissions and Drivetrain
3
Oct 14, 2005 10:32 AM
bigd25x
Transmissions and Drivetrain
17
Jul 9, 2005 01:32 PM
Guyver03
Transmissions and Drivetrain
3
Aug 9, 2004 01:39 PM
shapeshifter
Transmissions and Drivetrain
9
Mar 14, 2004 10:26 AM
89' RS/blue
Suspension and Chassis
4
Jul 31, 2003 10:41 PM




All times are GMT -5. The time now is 08:01 AM.