Home » Public Forums » GMCnet » Rebuild Questions:
| Rebuild Questions: [message #239958] |
Fri, 14 February 2014 01:17  |
noi
Messages: 293
Registered: October 2010
Location: South of Fremont
Karma: 0
|
Senior Member |
|
|
Greetings:
I have a couple of rebuild questions for the "group think".
First:
I will soon be getting some new torsion bars, thanks to Peter H. - I was also going to put on wheel extenders (yes, have read pretty much all the thoughts on them offered here) - Rebuilt and strengthened A-Arms are also in the works.
I was wondering if, while I have my torsion bar cross member out, it would be worthwhile to weld a small support strap over the top of each pork chop indent to help support the additional "load" on that area due to the wheel extenders.
I remember some discussion a while back on a member seeing some cracks in that area, though I think it was not our motorhome cross member - A visual inspection of mine did not show any obvious cracking.... Just some slight rubbing marks/rust.
Second:
Anyone replaced their front stabilizer bar because it was "worn out"? - I don't mean the parts "attached" to it, but the bar itself loosing "springiness" (is that a technical description?) - Mine looks to be in pretty good condition, but I only have visual inspection to judge condition/handling qualities.
Thanks for any thoughts you care to share,
Carl P.
76 Birchaven
South of Fremont
|
|
|
|
| Re: [GMCnet] Rebuild Questions: [message #239960 is a reply to message #239958] |
Fri, 14 February 2014 02:00  |
mickeysss
Messages: 1476
Registered: January 2012
Karma: 0
|
Senior Member |
|
|
I think you may be better off putting in a new manny front end. mickey anaheim ca. 7 palm beach
On Feb 13, 2014, at 11:17 PM, noi wrote:
>
>
> Greetings:
>
> I have a couple of rebuild questions for the "group think".
>
> First:
>
> I will soon be getting some new torsion bars, thanks to Peter H. - I was also going to put on wheel extenders (yes, have read pretty much all the thoughts on them offered here) - Rebuilt and strengthened A-Arms are also in the works.
>
> I was wondering if, while I have my torsion bar cross member out, it would be worthwhile to weld a small support strap over the top of each pork chop indent to help support the additional "load" on that area due to the wheel extenders.
>
> I remember some discussion a while back on a member seeing some cracks in that area, though I think it was not our motorhome cross member - A visual inspection of mine did not show any obvious cracking.... Just some slight rubbing marks/rust.
>
> Second:
>
> Anyone replaced their front stabilizer bar because it was "worn out"? - I don't mean the parts "attached" to it, but the bar itself loosing "springiness" (is that a technical description?) - Mine looks to be in pretty good condition, but I only have visual inspection to judge condition/handling qualities.
>
> Thanks for any thoughts you care to share,
>
> Carl P.
> 76 Birchaven
> South of Fremont
>
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
| Re: Rebuild Questions: [message #239963 is a reply to message #239958] |
Fri, 14 February 2014 02:23 |
mrgmc3
Messages: 210
Registered: September 2013
Location: W Washington
Karma: 2
|
Senior Member |
|
|
| noi wrote on Fri, 14 February 2014 01:17 |
Anyone replaced their front stabilizer bar because it was "worn out"? - I don't mean the parts "attached" to it, but the bar itself loosing "springiness" (is that a technical description?) - Mine looks to be in pretty good condition, but I only have visual inspection to judge condition/handling qualities.
|
Stabilizer bars generally do not "wear out", unlike a spring they are not loaded most of the time. The only time there is force on the stab bar is during cornering.
Chris Geils - Twin Cities / W Wa
1978 26' Kingsley w/ very few mods; PD9040, aux trans cooler, one repaint in stock colors, R134a, Al rad, Alcoas, 54k mi
|
|
|
|
| Re: [GMCnet] Rebuild Questions: [message #239970 is a reply to message #239958] |
Fri, 14 February 2014 07:09 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
|
Senior Member |
|
|
Carl,
You must have some reservations about the 1-Ton front end because if you
add the cost of the wheel extenders and the reinforced A-arms, seems to me
you'd be close to the cost of the 1-Ton which would give even more
benefits. The main objection I've heard from anyone is the non-parallelism
of the A-arms with the 1-Ton. My considerable driving experience (over
12,000 miles) has revealed no adverse effects.
I doubt you'll find it necessary to reinforce the crossmember -- but then,
I've never seen a report of fatigue cracking there.
As for stabilizer bar fatigue, I doubt that also. Since every time it's
loaded it's almost immediately loaded in the opposite direction an equal
amount, there's no possibility of it taking a set. And it's sure not going
to build up enough heat from that flexing to "kill the temper". :-) That
said, I do enjoy the flat cornering of the X-Birchaven with its humongous
Caspro front bar And I'm GLAD I DON'T have the rear ones, which render
site leveling a pipe dream.
Ken H.
On Fri, Feb 14, 2014 at 2:17 AM, noi wrote:
>
>
> Greetings:
>
> I have a couple of rebuild questions for the "group think".
>
> First:
>
> I will soon be getting some new torsion bars, thanks to Peter H. - I was
> also going to put on wheel extenders (yes, have read pretty much all the
> thoughts on them offered here) - Rebuilt and strengthened A-Arms are also
> in the works.
>
> I was wondering if, while I have my torsion bar cross member out, it would
> be worthwhile to weld a small support strap over the top of each pork chop
> indent to help support the additional "load" on that area due to the wheel
> extenders.
>
> I remember some discussion a while back on a member seeing some cracks in
> that area, though I think it was not our motorhome cross member - A visual
> inspection of mine did not show any obvious cracking.... Just some slight
> rubbing marks/rust.
>
> Second:
>
> Anyone replaced their front stabilizer bar because it was "worn out"? - I
> don't mean the parts "attached" to it, but the bar itself loosing
> "springiness" (is that a technical description?) - Mine looks to be in
> pretty good condition, but I only have visual inspection to judge
> condition/handling qualities.
>
> Thanks for any thoughts you care to share,
>
> Carl P.
> 76 Birchaven
> South of Fremont
>
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
|
|
|
|
| Re: Rebuild Questions: [message #239999 is a reply to message #239958] |
Fri, 14 February 2014 09:15 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
|
Senior Member |
|
|
""Anyone replaced their front stabilizer bar because it was "worn out"? - I don't mean the parts "attached" to it, but the bar itself loosing "springiness" (is that a technical description?) - Mine looks to be in pretty good condition, but I only have visual inspection to judge condition/handling qualities.
Thanks for any thoughts you care to share,
Carl P.
76 Birchaven
South of Fremont
""
Carl, I don't ever expect a stabilizer bar to lose it's "springiness"
Bob de Kruyff
78 Eleganza
Chandler, AZ
|
|
|
|
| Re: [GMCnet] Rebuild Questions: [message #240033 is a reply to message #239999] |
Fri, 14 February 2014 12:15 |
Jim Bounds
Messages: 842
Registered: January 2004
Karma: 0
|
Senior Member |
|
|
I don't thing you are giving enough lateral stress to bend or effect the tension of the sway bar. Have not seen that before,
Jim Bounds
--------------
--------------------------------------------
On Fri, 2/14/14, Bob de Kruyff <NEXT2POOL@AOL.COM> wrote:
Subject: Re: [GMCnet] Rebuild Questions:
To: gmclist@temp.gmcnet.org
Date: Friday, February 14, 2014, 10:15 AM
""Anyone replaced their front stabilizer bar because it was
"worn out"? - I don't mean the parts "attached" to it, but
the bar itself loosing "springiness" (is that a technical
description?) - Mine looks to be in pretty good condition,
but I only have visual inspection to judge
condition/handling qualities.
Thanks for any thoughts you care to share,
Carl P.
76 Birchaven
South of Fremont
""
Carl, I don't ever expect a stabilizer bar to lose it's
"springiness"
--
Bob de Kruyff
78 Eleganza
Chandler, AZ
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
| Re: Rebuild Questions: [message #240070 is a reply to message #239958] |
Fri, 14 February 2014 18:58 |
 |
Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
|
Senior Member |
|
|
| noi wrote on Fri, 14 February 2014 02:17 |
Greetings:
<snip>
Anyone replaced their front stabilizer bar because it was "worn out"? - I don't mean the parts "attached" to it, but the bar itself loosing "springiness" (is that a technical description?) - Mine looks to be in pretty good condition, but I only have visual inspection to judge condition/handling qualities.
Thanks for any thoughts you care to share,
Carl P.
|
Carl,
Between Bob D and yours truly, you will be hard pressed to get more automotive engineering experience in one place.
Believe Bob.
A short explanation (now that I have a close to real keyboard again):
The anti-roll bar (as it is really called) is a spring. Springs have two and only two failure modes. One is that they break. The other is that they "take a set" - this mean the free length is now different than it should be and in a properly engineered part this means that someone blew the heat treating process.
As your anti-roll bar is still intact, it hasn't failed. I can't imagine the case where it would take a set.
A thing that can happen is that the links little rubber bushing go bad. The complete set was about 10$us at NAPA.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
|
|
|
|
| Re: Rebuild Questions: [message #240535 is a reply to message #239958] |
Wed, 19 February 2014 21:46 |
noi
Messages: 293
Registered: October 2010
Location: South of Fremont
Karma: 0
|
Senior Member |
|
|
Greetings:
Sorry I have not responded sooner, but between some email issues and the forum down, I haven’t responded to say Thanks for the thoughts!
Ken:
Actually, no reservations on the 1-Ton kit – In fact, it is on my “get list” – But I was trying to focus the question to the added extra load to the torsion bar cross member – The picture I saw on the photo site, while not a GMC cross member, showed some cracking:
http://www.gmcmhphotos.com/photos/torsion-bar-change-over-trk/p42547-both-ends-were-cracked.html
So I was just wondering if adding some reinforcement to mine, while it was out, would be worthwhile - But from what you have found, and the lack of any reported problems with the cross member and extra loading…. Probably no added value to reinforcing the cross member.
I’ll have to think some about your positive recommendation on using a HD sway bar.
Chris – Ken – Bob – Jim - Matt: Thanks for all thoughts about sway/anti-roll bars – Even got a bit of metallurgy “schooling” from Bob & Matt…. Cool!
Thanks again,
Carl P.
|
|
|
|
| Re: [GMCnet] Rebuild Questions: [message #240537 is a reply to message #240535] |
Wed, 19 February 2014 21:53 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
|
Senior Member |
|
|
My P.O. had Sirum put one in front about the size of my wrist. Coach drives nice. Siince I never drove one without, I can't make a comparison.
--johnny
'76 23' transmode norris
________________________________
I’ll have to think some about your positive recommendation on using a HD sway bar.
Chris – Ken – Bob – Jim - Matt: Thanks for all thoughts about sway/anti-roll bars – Even got a bit of metallurgy “schooling” from Bob & Matt…. Cool!
Thanks again,
Carl P.
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
|
|
|
|
| Re: Rebuild Questions: [message #240538 is a reply to message #240535] |
Wed, 19 February 2014 22:05 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
|
Senior Member |
|
|
| noi wrote on Wed, 19 February 2014 20:46 |
Greetings:
Sorry I have not responded sooner, but between some email issues and the forum down, I haven’t responded to say Thanks for the thoughts!
Ken:
Actually, no reservations on the 1-Ton kit – In fact, it is on my “get list” – But I was trying to focus the question to the added extra load to the torsion bar cross member – The picture I saw on the photo site, while not a GMC cross member, showed some cracking:
http://www.gmcmhphotos.com/photos/torsion-bar-change-over-trk/p42547-both-ends-were-cracked.html
So I was just wondering if adding some reinforcement to mine, while it was out, would be worthwhile - But from what you have found, and the lack of any reported problems with the cross member and extra loading…. Probably no added value to reinforcing the cross member.
I’ll have to think some about your positive recommendation on using a HD sway bar.
Chris – Ken – Bob – Jim - Matt: Thanks for all thoughts about sway/anti-roll bars – Even got a bit of metallurgy “schooling” from Bob & Matt…. Cool!
Thanks again,
Carl P.
|
Carl, my coach also came with a bigger bar--it's not huge but about 1/8 over the original. I do think some more front (and rear) roll stiffness will help the GMC. However, a larger front bar can be hard on the bushings and links so I did replace the hardware with energy suspension urethane parts.
Bob de Kruyff
78 Eleganza
Chandler, AZ
|
|
|
|
|
|
Goto Forum:
Current Time: Fri Oct 04 14:18:39 CDT 2024
Total time taken to generate the page: 0.01193 seconds
|
GMCforum
Search
Help
Register
Login
Home
