Home » Public Forums » GMCnet » torsion bar install
| torsion bar install [message #271866] |
Fri, 13 February 2015 06:15  |
skip2
Messages: 544
Registered: September 2011
Location: Winter Haven,FL (center o...
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Going to put in the new T bars I received via Mr Huber, which by the way look totally awesome, it's a shame to hide them, thinking about putting an arrow on the side with the words "look underneath" to show them off. Just a couple of concerns like should the tanks be full, should I put some dummy weight in the front seats or both empty, is there like a "break in" period so that they will need readjusting after they settle in. The actual install I've done done several times with the old ones.
Skip Hartline
74 Canyon Lands, FiTech,
3.7 FD LSD, Manny Tranny,
Springfield Distributor,
2001 Chevy Tracker Ragtop Towd
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| Re: [GMCnet] torsion bar install [message #271876 is a reply to message #271866] |
Fri, 13 February 2015 09:10  |
James Hupy
Messages: 6806
Registered: May 2010
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Install them at ride height. Watch them for several weeks. Remember, they
are 19% stronger than the original ones were when they were new. After that
check as necessary.
Jim Hupy
Salem, Or
78 GMC ROYALE 403 ( got 4 sets coming on Monday)
On Feb 13, 2015 4:16 AM, "Skip Hartline" wrote:
> Going to put in the new T bars I received via Mr Huber, which by the way
> look totally awesome, it's a shame to hide them, thinking about putting an
> arrow on the side with the words "look underneath" to show them off. Just
> a couple of concerns like should the tanks be full, should I put some dummy
> weight in the front seats or both empty, is there like a "break in" period
> so that they will need readjusting after they settle in. The actual install
> I've done done several times with the old ones.
> Skip Hartline
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| Re: [GMCnet] torsion bar install [message #284394 is a reply to message #284392] |
Sun, 09 August 2015 12:13 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
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Larry,
Reviving a long-standing debate: It makes NO difference which end of a
torsion bar is forward. However, I understand that the Huber bars were
made following my suggestion that the forward hex be extended so it will
seat in more of the A-arm socket. That tells you which end to put
forward. But, as with the OEM, the bar will twist in the same direction
regardless of which end is forward.
Ken H.
On Sun, Aug 9, 2015 at 12:51 PM, larry.whisler
wrote:
> I have a question regarding the install of the torsion bars
> sent out by P. Huber.
>
> I need some clarification on the install. Mine are stamped Left
> and Right on the longer section of the hex on each bar.
>
> In one post, the instructions are to position the stamped end
> into the pork chop and in another post the instructions are to
> put the longer hex section in the A arm socket.
>
> Which is it?
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] torsion bar install [message #284423 is a reply to message #284417] |
Sun, 09 August 2015 17:05 |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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I ran into an issue with mine also. There were more than one pork chop configuation and mine needed a change. I ended up with the adjustable PC's although if I had the more common angled ones I would not have needed them and the added expense. Just my experience, Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
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| Re: [GMCnet] torsion bar install [message #284426 is a reply to message #284424] |
Sun, 09 August 2015 17:49 |
James Hupy
Messages: 6806
Registered: May 2010
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There are at least 3 different part numbers for the pork chops. Principal
difference is the orientation of the hexagon shape that indexes with the
torsion bar. There was one for the Cadillac/Oldsmobile cars, and two
different ones for the motorhome. 23°, 21° and 19° from straight comes to
mind. Manny also makes a 30° flame cut plow steel one that will correct
for twisted torsion bars. It stands to reason that a 19% stiffer bar would
be more difficult to tension than a 40 year old fatigued one. When you get
back to your project coach, if you can install the nut and adjustment bolt
with what you have, take it off the stands and drive it a bit. Then check
ride height. Let us know what you have. Then we will be able to help you
figure it out.
Jim Hupy
Salem, Or
78 GMC ROYALE 403
On Aug 9, 2015 3:26 PM, "larry.whisler" wrote:
> Hal,
>
> Now that you brought it up, I do recall that there were several
> different pork chops made. Some kind of color coding that was
> spray painted on the pork chop that indicated a different angle.
>
> Maybe some one will chime in with some additional information.
>
> larry
>
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| Re: [GMCnet] torsion bar install [message #284429 is a reply to message #284424] |
Sun, 09 August 2015 18:14 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Larry,
It's doubtful you'll see a pork chop with any of the original color
coding. So, this graphic presentation of Emery's description of the
various angles may be useful:
http://www.gmcmhphotos.com/photos/g5964-pork-chop-measurement.html
Ken H.
On Sun, Aug 9, 2015 at 6:26 PM, larry.whisler
wrote:
> Hal,
>
> Now that you brought it up, I do recall that there were several
> different pork chops made. Some kind of color coding that was
> spray painted on the pork chop that indicated a different angle.
>
> Maybe some one will chime in with some additional information.
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] torsion bar install [message #284441 is a reply to message #284417] |
Sun, 09 August 2015 21:12 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
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Larry,
I just got off the phone with Manny. He's run into the same ride height
problem you're having. He's having 20* pork chops made to correct it.
Call him.
Ken H.
On Sun, Aug 9, 2015 at 4:53 PM, larry.whisler
wrote:
> Okay, thanks for the prompt responses. I have the torsion bars installed
> in the coach and oriented correctly with the longer hex in the front in the
> A arm socket.
>
> The adjuster dimple on the pork chop arms are located about 2 and half
> inches below
> the cross member. This seems to be extremely tight to me. I could barely
> get the
> unloader tool attached and it seems that I am going to put considerable
> amount of force
> the pork chop just to be able to insert the adjusting nut and
> corresponding adjusting bolt.
>
> Anyway, I got rained out in the driveway at this point and thought that I
> would consult
> the forum for advisement.
>
> thanks again in advance
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] torsion bar install [message #284558 is a reply to message #284557] |
Tue, 11 August 2015 09:39 |
James Hupy
Messages: 6806
Registered: May 2010
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Same materials and overall shape. Orientation of the hex hole was specific
to the cars because of the difference in weights between cars and
motorhomes. As an aside, it is much easier to tension the bars to install
the adjustment nut and bolt if the coach is off the ground supported by
Jack stands of a suitable load rating, safely positioned. Also, if the
front shock is disconnected, it will allow a bit more suspension travel
thereby unloading the bars a bit more. If the tires are on the ground, you
are lifting the coach as well as twisting the bars. Much more difficult.
Jim Hupy
Salem, Oregon
78 GMC ROYALE 403
On Aug 11, 2015 7:25 AM, "larry.whisler" wrote:
> Ken,
>
> were the pork chops from the toronado/Eldorado the same as
> the ones installed on the motorhomes?
>
> just wondering
>
> larry
>
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| Re: [GMCnet] torsion bar install [message #284566 is a reply to message #284562] |
Tue, 11 August 2015 10:01 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Larry,
From my conversation with Manny (my only knowledge on the subject), you can
expect the coach to ride 3" higher.
Ken H.
On Tue, Aug 11, 2015 at 10:54 AM, larry.whisler
wrote:
> James,
>
> I have the coach off the ground on jack stands so there
> is no tension from the wheels.
>
> I am going to crank some on the unloader tool today and see
> where it goes.
>
> My concern is that if the adjuster is sticking this far out
> and these T-bars are 19% stronger then I won't have any adjustment
> by the time I crank enough pressure on them to get the adjuster
> nut and bolt in place.
>
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] torsion bar install [message #284568 is a reply to message #284567] |
Tue, 11 August 2015 10:31 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Larry, let me clarify what I meant by a "few" as that is not very
descriptive. The bolt needs to screw completely through the nut bar, and
extend through it by a few threads. Meaning 6 full turns more or less. A
"couple" of threads would be two threads, more
or less. IT IS NOT SUPER CRITICAL. Metal heat treatment, and strength of
materials being a large variable here. All bars will be slightly different
in strength as well as heat treat. As will lower control arm socket
orientation and pork chops and, and, you get the idea. That is why the long
bolt in the adjustment. Variables abound.
Jim Hupy
Salem, Or
78 GMC ROYALE 403
On Aug 11, 2015 8:14 AM, "Ken Henderson" wrote:
> Try to get 3 full threads engaged -- that will give you about 97% of the
> strength of full engagement.
>
> Ken H.
>
> On Tue, Aug 11, 2015 at 11:01 AM, James Hupy wrote:
>
>> Larry, after you install the nut and bolt, just take a few threads on the
>> bolt. Then lower and drive the coach a few miles.
>> ...
>>
>>
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| Re: [GMCnet] torsion bar install [message #284573 is a reply to message #284568] |
Tue, 11 August 2015 11:31 |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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Not to hijack this discussion but....I found NO marks on the new Huber bars to orientate them left and right. The old bars were marked on the ends but there were no marks on the new ones that I saw. Anyone else find this?
Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
[Updated on: Tue, 11 August 2015 18:36] Report message to a moderator |
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