Author Topic: Steering Coupler Nuts  (Read 1856 times)

Tinkerr

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Steering Coupler Nuts
« on: January 24, 2020, 08:07:14 PM »
I cleaned up a original steering coupler for a 1968 Camaro, however the nuts and lock washers were missing. I've seen the parts vendors selling replacements in what I believe is gold cadmium plating, zinc plating or a combination of both. What is correct? Thank Paul

Mike S

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Re: Steering Coupler Nuts
« Reply #1 on: January 24, 2020, 08:19:19 PM »
 On my 05B NOR 67 w/manual steering, the nuts, washers and bolts were unquestionably phosphate.
I will check my 04B LOS 67 with/PS later today.
The repro nuts have a slight radius along the top and bottom and originals are more square. Very easy to spot the difference. 

Mike
67 04B LOS SS/RS L35 Hardtop - Original w/UOIT
67 05B NOR SS/RS L35 Convertible - Restored

68camaroz28

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Re: Steering Coupler Nuts
« Reply #2 on: February 06, 2020, 10:27:24 PM »
Might not help but this our original coupler and hardware restored and when placed on our 68.
https://www.camaros.net/forums/133-build-projects/182584-time-another-68-z-28-restored-54.html
Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584

Mike S

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Re: Steering Coupler Nuts
« Reply #3 on: February 07, 2020, 02:13:40 AM »
Chick, 

 Your 68 originally had a copper plated bolt on the joint? Must be something for '68 then? Of all the '67 rag joint bolts I have I haven't seen copper. Did 68 use the stamped copper ground like used in '67 manual boxes?

Mike
67 04B LOS SS/RS L35 Hardtop - Original w/UOIT
67 05B NOR SS/RS L35 Convertible - Restored

68camaroz28

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Re: Steering Coupler Nuts
« Reply #4 on: February 07, 2020, 11:19:20 AM »
Never did any research on the issue cause thought I had no reason to do so canít offer much Mike.
Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584

Camarocards

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Re: Steering Coupler Nuts
« Reply #5 on: February 07, 2020, 03:28:21 PM »
Mike,

Here are a few pictures of the original refurbished Steering Coupler from my '68. My car was built two weeks after Chick's so it is in line with what has been seen on cars of that time frame. i.e. Copper plated bolt.

Hope this helps,

Bob
Bob
'68 SS L35 01D

Mike S

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Re: Steering Coupler Nuts
« Reply #6 on: February 07, 2020, 03:35:39 PM »
Hi Bob,
 That must be a 67-68 change then. I took a brass brush to my 67 LOS w/PS and it definitely has no copper plating and no signs of zinc either. The P/S ground is different than a manual steering however.

Thanks!
Mike
67 04B LOS SS/RS L35 Hardtop - Original w/UOIT
67 05B NOR SS/RS L35 Convertible - Restored

Edgemontvillage

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Re: Steering Coupler Nuts
« Reply #7 on: February 07, 2020, 09:02:17 PM »
There may be differences between the 4 ply power steering coupler and 7 ply manual regarding hardware however for the PS coupler I've observed, up to the 1969 model year the tall style bolts were used with the MB head marking or sometimes no marking. One was manganese (dark) phosphated and the other copper plated.

Original PS coupler stud hardware showing tall style threaded studs with copper plating and manganese phosphating
 

« Last Edit: February 07, 2020, 10:08:43 PM by Edgemontvillage »

68camaroz28

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Re: Steering Coupler Nuts
« Reply #8 on: February 07, 2020, 09:55:18 PM »
Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584

Mike S

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Re: Steering Coupler Nuts
« Reply #9 on: February 08, 2020, 01:13:02 AM »
It's interesting copper plated and non-plated were used. I wonder if there was a reason both types were used and what determined it, if anything.
67 04B LOS SS/RS L35 Hardtop - Original w/UOIT
67 05B NOR SS/RS L35 Convertible - Restored

Camarocards

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Re: Steering Coupler Nuts
« Reply #10 on: February 08, 2020, 03:19:08 AM »
Quote
It's interesting copper plated and non-plated were used. I wonder if there was a reason both types were used and what determined it, if anything.

Mike,

Iím just guessing that it may have to do with ensuring a good ground path from the coupler to the steering column.

Chick,

I noticed that both of your nuts are zinc plated and both lock washers are phosphate. If I remember correctly the AIM calls out different nuts and lockwashers. i.e. one side of the coupler, the one that is copper plated, used a zinc plated nut and lockwasher and the other side, used a nut and lockwasher that was phosphated. Maybe a Z/28 used a different combination of nuts and lockwashers???
Bob
'68 SS L35 01D

68camaroz28

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Re: Steering Coupler Nuts
« Reply #11 on: February 08, 2020, 03:52:58 AM »
Bob, those pictures were taken four years or more before install. I remember differences and will have to review the car.
Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584

jeffschevelle

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Re: Steering Coupler Nuts
« Reply #12 on: April 13, 2020, 07:44:54 PM »
To the extent relevant, every single 67 Chevelle I have disassembled (which is north of 25) has had the copper plated bolt.