Suspension and Chassis Questions about your suspension? Need chassis advice?

UMI Torque arm issues

Thread Tools
 
Search this Thread
 
Old Nov 3, 2023 | 08:22 PM
  #1  
Nutro's Avatar
Thread Starter
Member
Liked
iTrader: (1)
 
Joined: Oct 2021
Posts: 227
Likes: 26
From: Austin, TX
UMI Torque arm issues

So, long story short, I bought some new UMI goodies. A trans crossmember and torque arm, pan hard bar etc. I bought the driveshaft safety loop version. It appears it was welded cockeyed and would cause driveshaft fitment issues. I contacted UMI and they promptly sent out a non loop version. I got it today and installed it. Without changing anything else, the top of their bushing is hitting the transmission and binding. New rubber motor mounts, trans mount is used but appears to be good. Motor mount clamshells are on correct side. The car is sitting on the tires, on wheel cribs. Has anyone else experienced this?



Reply
Old Nov 4, 2023 | 07:24 AM
  #2  
alan91z28's Avatar
COTM Editor
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2008
Posts: 1,365
Likes: 216
From: PA
Car: 91/89/85/82 Z28s, 88 TA, 88/88 SC
Engine: SBC and LS variations
Re: UMI Torque arm issues

yes... what i ended up doing in a lot of my swaps is use the holley transmission cross member with the UMI torque arm that has the round tube end (ie like how it originally could mount on the trans but now mounted to the holley cross member). i have then also had to trim the mount point on the transmission and also cut a little off the end of the umi torque arm... i think i have posted some pics in some of my build threads on this

Reply
Old Nov 7, 2023 | 11:20 AM
  #3  
Nutro's Avatar
Thread Starter
Member
Liked
iTrader: (1)
 
Joined: Oct 2021
Posts: 227
Likes: 26
From: Austin, TX
Re: UMI Torque arm issues

I'm just lost on this and UMI says their products aren't incorrect and that my car is messed up or something is off. I have loosened motor mounts and tried moving the trans around etc. I have loosened bolts on crossmember, I have tried everything and I just can't get more clearance. I put new AC Delco 22188497 engine mounts and I bought a new trans mount as well.
I have 1/4" clearance between the nub of the transmission and the top of the UMI shackle. UMI just told me to swap back to the OEM motor mounts and try it. Haha no.
At first, "customer service" told me I had to move the crossmember over, I can't, your bolt holes are maxed out. Oh you don't have the trans mount centered in the middle hole of the x-member. Yes I do as pics show.

I guess I will pull all this crap and sell it and just run stock parts on this car at this point.







Reply
Old Nov 7, 2023 | 02:48 PM
  #4  
QwkTrip's Avatar
COTM Editor
25 Year Member
iTrader: (22)
 
Joined: Mar 2001
Posts: 10,405
Likes: 2,081
Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: UMI Torque arm issues

I bought a couple different things from UMI over the years and never kept any of them.

I doubt you would have liked that set up anyway. Shackle mounts are clunky. And the crossmember is not exhaust friendly for an LS engine where the pipes go down the tunnel.
Reply
Old Nov 8, 2023 | 08:03 AM
  #5  
dabomb6608's Avatar
Senior Member
15 Year Member
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Jul 2010
Posts: 931
Likes: 95
From: Marion, IL
Car: 86 Trans Am/85 K5 Jimmy
Engine: 406 FIRST/350 TPI
Transmission: TKO 600/700R4
Axle/Gears: 9Bolt/10Bolt front & back
Re: UMI Torque arm issues

This doesn't make me feel all warm and fuzzy inside...I was going to be installing my cross member and adjustable torque arm I bought used over 5 years ago while I have the car apart this winter. Hoping I don't have any issues like these.
Reply
Old Nov 8, 2023 | 08:09 AM
  #6  
TTOP350's Avatar
Supreme Member
20 Year Member
Liked
Loved
Community Favorite
iTrader: (9)
 
Joined: Oct 2001
Posts: 12,214
Likes: 1,140
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: UMI Torque arm issues

Definition of performance parts is, it doesn't fit.
Reply
Old Nov 8, 2023 | 09:24 AM
  #7  
StevenK's Avatar
Supreme Member
20 Year Member
Liked
Loved
Community Favorite
iTrader: (1)
 
Joined: Feb 2003
Posts: 1,508
Likes: 63
From: Austin, Tx
Car: 91 Z28
Engine: LS1
Transmission: T-56
Axle/Gears: 3.73 Hawks 8.8
Re: UMI Torque arm issues

If it makes you feel better, I had to do some work to my Spohn unit to get it to work too. If anyone ever makes a good xmember with exhaust provisions and an upgraded torque arm that actually fits nicely, I'd but it in a heartbeat.
Reply
Old Nov 8, 2023 | 02:41 PM
  #8  
17RamGTA's Avatar
Junior Member
 
Joined: Jan 2022
Posts: 47
Likes: 22
From: Nebraska
Car: 1989 GTA
Engine: 383/ procharger P1S-C
Transmission: T56
Axle/Gears: factory axle 3.73's
Re: UMI Torque arm issues

I cut the provision off for the factory torque arm to get Spohn torque arm to fit.
Reply
Old Nov 8, 2023 | 04:02 PM
  #9  
QwkTrip's Avatar
COTM Editor
25 Year Member
iTrader: (22)
 
Joined: Mar 2001
Posts: 10,405
Likes: 2,081
Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: UMI Torque arm issues

I went to a local speed shop and had them make a custom trans crossmember and custom length torque arm for me. Didn't cost any more than buying a kit.

My torque arm is a little shorter than normal. It was too much of a traffic jam up in stock location. It is tied in near the front of my Heidts (Alston) inner subframe connectors

Last edited by QwkTrip; Nov 8, 2023 at 04:12 PM.
Reply
Old Nov 8, 2023 | 04:15 PM
  #10  
Firechicken82's Avatar
Supreme Member
Liked
 
Joined: Aug 2021
Posts: 1,173
Likes: 341
From: CT
Car: 82 TA
Engine: Zz430 clone w a torquestorm blower
Transmission: Magnum f
Axle/Gears: Ford 9 w 4.11
Re: UMI Torque arm issues

I had a similar issue when I did my t56 swap. The torque arm was really close w the rear end hanging. As I put weight on the rear and it moved into the normal position at ride height there was a bit more clearance. I adjusted all the heim joints in and I have 1 inch of clearance.

but yeah, it's tight in that area.
Reply
Old Nov 8, 2023 | 04:30 PM
  #11  
QwkTrip's Avatar
COTM Editor
25 Year Member
iTrader: (22)
 
Joined: Mar 2001
Posts: 10,405
Likes: 2,081
Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: UMI Torque arm issues

Torque arms I know about,
https://www.thirdgen.org/forums/ltx-...s-3rd-gen.html

Trans cross members for LS swaps that I know about,
https://www.thirdgen.org/forums/ltx-...ls-engine.html
Reply
Old Nov 9, 2023 | 07:30 AM
  #12  
RJ IROC's Avatar
Member
10 Year Member
 
Joined: Apr 2013
Posts: 128
Likes: 22
From: Saint Louis, Missouri
Car: 1985 Camaro IROC-Z
Engine: 383 HSR Comp XFI280HR Profiler 195s
Transmission: T5
Axle/Gears: 3.73 Posi
Re: UMI Torque arm issues

I just installed this kit in mine a couple of months ago. Have you tried using the second hole in those two brackets that connect the round bushings at the cross member (with the two-hole side down towards the cross member)? That will lower everything away from that boss on the tailshaft. When I installed mine (in a T5 car as well), I was not anywhere near hitting that part on the trans. Maybe the engine and trans aren't straight in the car?

If you love this, you'll also love how the top corner of the bracket above the pinion on the diff will slam into the trans tunnel unless you BFH mod the above area. Only took me a few minutes, but I had to drop the TA mount on the rear to do so. Easiest to do it before you final install everything. I GUARANTEE it will hit if you don't clearance the above area when the suspension is compressed. Despite this being a documented problem on this forum, there is NOTHING in the instructions that mention this at all. My only other complaint about this kit was that the parts in mine were covered with waterjet garnet/AlOx blasting media. Looks like little brown gritty sand. I had to disassemble and clean every bushing to get it all out.

Once you get everything installed right, you will love how it feels. The pinion angle is EASY to adjust, ride quality is great, and the rear end feels very well planted. No complaints on mine after an autoX event and some misc. driving around.
Reply
Old Nov 9, 2023 | 02:37 PM
  #13  
QwkTrip's Avatar
COTM Editor
25 Year Member
iTrader: (22)
 
Joined: Mar 2001
Posts: 10,405
Likes: 2,081
Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: UMI Torque arm issues

My UMI heavy-duty torque arm bracket (attached to axle housing) dented my floor pan. Problem was the shop sent me home with pinion angle set wrong (pinion pointing too far up). It has never hit again after adjusting pinion angle correctly. The UMI heavy-duty bracket is actually quite good. I re-used it when making the custom torque arm. You can buy the bracket separately from UMI if you want to use it for a custom build.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Magik
Suspension and Chassis
9
Dec 15, 2020 01:29 PM
indebt
Engine/Drivetrain/Suspension Parts for Sale
0
Jan 1, 2019 06:50 PM
Drone358
Fabrication
15
Sep 27, 2016 09:51 AM
1988-305-tbi
Suspension and Chassis
10
Apr 27, 2009 08:01 AM
zupmanZ28
Suspension and Chassis
9
May 7, 2004 09:46 PM




All times are GMT -5. The time now is 01:42 PM.