Reason for the body pads. How did vibration play in.

[Bob Dunahugh]

Manufactures only put a part in for a good reason. And the type of materia=
l used to make those parts. The GMC has 4 body mounts. 2 at the front, and =
2 at the rear. The 2 main things that these mounts do. Is to keep the body,=
and frame as a unit. And keep 1. If you've ever taken a GMC completely a=
part. As I have. You've become very aware that the body is more of a main f=
rame then the steel structure it sets on. We have 2 main steel structures.=
One at each end. To have something to attach drivetrain parts too. The 2 =
side rails have very little strength too them. I see them as a means of kee=
ping the front/rear suspention structure. In position as to the relationshi=
p to each other. This is where the body pads come in. 2. There has to be a=
space between the body, and the suspention. To keep road vibration/noise a=
way from the passenger area. These GMC's where built for a high end market.=
So whatever we use to make replacement pads. Shouldn't be any harder then=
the pads that GM supplied originally. Bob Dunahugh

 

[adrien genesoto]

JP, and B Dunahugh,

I don't recall what year of Ford I beam model truck uses strut pads that are identical to the front and rear round isolator pads our GMC MH uses.
Replaced mine some years back,along with the center pads. FWIW

> Barry Controls makes vibration isolators similar to the ones used on the front and rear body mounts. They are rated by axial and radial load. The
> 22003 model is the closest match to the GMC isolators. Same diameter but requires a taller plate. I used the 22003-14.
>
> http://www.barrycontrols.com/UserFiles/File/Product_Catalog/bonded_tube/bcdi_prod_bonded_22000_series.pdf
>
> JP

--
Adrien & Jenny Genesoto
75 Glenbrook (26-3) Mods LS3.70 FD / Reaction Sys / 80mm Front&Intermidiate / Hydroboost / 16" Tires / Frame Rebuild / Interior Rebuild
Yuba City,Ca. Text 530-nine-3-three-3-nine-nine-6

 

[michael1]

I am confused, I tried searching for these and I-Beam trucks did not have struts.
Are you possibly calling them something different?

> JP, and B Dunahugh,
>
> I don't recall what year of Ford I beam model truck uses strut pads that are identical to the front and rear round isolator pads our GMC MH uses.
> Replaced mine some years back,along with the center pads. FWIW
>
>
>

> > Barry Controls makes vibration isolators similar to the ones used on the front and rear body mounts. They are rated by axial and radial load.
> > The 22003 model is the closest match to the GMC isolators. Same diameter but requires a taller plate. I used the 22003-14.
> >
> > http://www.barrycontrols.com/UserFiles/File/Product_Catalog/bonded_tube/bcdi_prod_bonded_22000_series.pdf
> >
> > JP

--
1973 GMC 26' Glacier - Unknown Mileage - Has a new switch pitch transmission with Powerdrive

 

[adrien genesoto]

Michael,

The I beam axles have each a control arm back to a mount at the frame. The large round rubber isolator at the end of the control arm to frame is very
close to what the coach uses front and back. I was able to use them as replacement, OEM were rock hard. I also increased the thickness of the
isolators ( 3/4 in ), gave me better clearance on top of the engine.

Hope this is a better explanation.

> I am confused, I tried searching for these and I-Beam trucks did not have struts.
> Are you possibly calling them something different?
>

> > JP, and B Dunahugh,
> >
> > I don't recall what year of Ford I beam model truck uses strut pads that are identical to the front and rear round isolator pads our GMC MH
> > uses.
> > Replaced mine some years back,along with the center pads. FWIW
> >
> >
> >

> > > Barry Controls makes vibration isolators similar to the ones used on the front and rear body mounts. They are rated by axial and radial
> > > load. The 22003 model is the closest match to the GMC isolators. Same diameter but requires a taller plate. I used the 22003-14.
> > >
> > > http://www.barrycontrols.com/UserFiles/File/Product_Catalog/bonded_tube/bcdi_prod_bonded_22000_series.pdf
> > >
> > > JP

--
Adrien & Jenny Genesoto
75 Glenbrook (26-3) Mods LS3.70 FD / Reaction Sys / 80mm Front&Intermidiate / Hydroboost / 16" Tires / Frame Rebuild / Interior Rebuild
Yuba City,Ca. Text 530-nine-3-three-3-nine-nine-6