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UMI torque arm - HELP!

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Old Jun 20, 2013 | 07:10 PM
  #1  
Manic Z's Avatar
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Car: 1985 Camaro IROC-Z
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Axle/Gears: 10 bolt 3.73 posi
UMI torque arm - HELP!

Hey guys, got a little problem here.
I recently had the UMI adjustable torque arm installed. Driving around, I noticed thuds when I was starting to accelerate. I happened to notice the poly torque arm mount lying on the road behind me. Picked it up, took the car home and jacked it up to see the clam shell is open.

I noticed there are two holes at the top of the clam shell where I assume a bolt/bolts must go. Problem is that they are missing.

I need to know what hardware is needed for the clamshell???? The top bolt/bolts and/or nuts that are used....
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Old Jun 21, 2013 | 10:04 AM
  #2  
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From: Montreal, Canada
Car: 1986 Chevrolet Camaro IROC-Z28
Engine: TPI 310ci (LB9)
Transmission: Custom Rebuilt 700R4 - 2600 Stall
Axle/Gears: 10 bolt, 3.73 Eaton Limited-Slip
Re: UMI torque arm - HELP!

Your torque arm was dragging and/or disconnected?
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Old Jun 21, 2013 | 11:36 AM
  #3  
Manic Z's Avatar
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From: Hamilton Ontario Canada
Car: 1985 Camaro IROC-Z
Engine: 350
Transmission: GForce T-5
Axle/Gears: 10 bolt 3.73 posi
Re: UMI torque arm - HELP!

It was disconnected at the front, so it wasn`t dragging. The front was knocking against the transmission. I went under the car again this morning with a light this time. It`s just the one bolt that`s missing. The one that goes through both pcs of the clamshell and into the trans. There`s no hole on the other side of the trans, so hopefully I can guess the pitch and length needed. Time to bring out the box o spare bolts.
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Old Jun 21, 2013 | 03:59 PM
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From: Montreal, Canada
Car: 1986 Chevrolet Camaro IROC-Z28
Engine: TPI 310ci (LB9)
Transmission: Custom Rebuilt 700R4 - 2600 Stall
Axle/Gears: 10 bolt, 3.73 Eaton Limited-Slip
Re: UMI torque arm - HELP!

Hmm.. I would contact the guys at UMI and get the right bolt for this.. Don't want to risk that falling out or causing damage to it or the tranny. When I installed mine I purchased new hardware to go along with it too, did you re-use your old stuff?
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Old Jun 21, 2013 | 04:02 PM
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Manic Z's Avatar
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Car: 1985 Camaro IROC-Z
Engine: 350
Transmission: GForce T-5
Axle/Gears: 10 bolt 3.73 posi
Re: UMI torque arm - HELP!

I bought the new hardware for the rear, but not the front.
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Old Jun 21, 2013 | 04:17 PM
  #6  
hellz_wings's Avatar
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From: Montreal, Canada
Car: 1986 Chevrolet Camaro IROC-Z28
Engine: TPI 310ci (LB9)
Transmission: Custom Rebuilt 700R4 - 2600 Stall
Axle/Gears: 10 bolt, 3.73 Eaton Limited-Slip
Re: UMI torque arm - HELP!

That sounds like the old hardware might have been just broken or maybe not the right size or who knows. New hardware can be bought for cheap at your nearest hardware store, just make sure you buy the right size. I'm not sure what it is but if you call UMI up they will be able to provide that info for you.
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Old Jun 21, 2013 | 05:27 PM
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Manic Z's Avatar
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From: Hamilton Ontario Canada
Car: 1985 Camaro IROC-Z
Engine: 350
Transmission: GForce T-5
Axle/Gears: 10 bolt 3.73 posi
Re: UMI torque arm - HELP!

Good idea. I'll give them a try.
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Old Oct 12, 2013 | 04:37 PM
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Car: 1983 Pontiac Trans Am Daytona 500
Engine: Crossfire 305ci V8
Transmission: Jasper 700R4 4 speed Automatic
Axle/Gears: 3.23 limited slip/posi
Re: UMI torque arm - HELP!

Got any photos of the damage?
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Old Oct 12, 2013 | 05:35 PM
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Re: UMI torque arm - HELP!

That bolt threads into the transmission.

Stock, it was 10mm x whatever the std thread is for that size; probably 1.5mm but I'm not sure. Probably around 40mm long. Has a washer head. Prolly find a perfect identical replacement one hanging on a card at the parts store.
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Old Oct 13, 2013 | 10:28 PM
  #10  
Manic Z's Avatar
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From: Hamilton Ontario Canada
Car: 1985 Camaro IROC-Z
Engine: 350
Transmission: GForce T-5
Axle/Gears: 10 bolt 3.73 posi
Re: UMI torque arm - HELP!

Originally Posted by KITT1983
Got any photos of the damage?
No photos of damage, as there was none. Just an open clamshell that released the poly mount and front of the torque arm.
I just played with different bolts from my stash until one fit.
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