Re: 11" x 2" Brakes? TAKE 2!

[Dave64 <lt7dave@xxxxxxxxx>]

Thanks - I'm now looking for a complete brake setup to use instead of what I have.  By the way, I now see that the drums aren't a match either!  One is 11 x 3, and the other measures out to 11 x 2 3/8 (would that be considered 2 1/2, or is this yet another different size?).  I took it for granted that the brakes were 11 x 2 1/2 because I saw what was left of the car the rearend came out of.  It looked like a '68 GTX (which it was said to be), but if it was, I now know that some things had clearly been swapped out over the years.  

Thanks for all of the help, guys.  Up until a year ago, it had been 25 years since I worked on these old Mopars, so sometimes I need help remembering what's what.  Still having fun, though!

Dave

--- On Thu, 5/27/10, Mike and Linda <miclinmopar@xxxxxxxxxxxxx> wrote:

> From: Mike and Linda <miclinmopar@xxxxxxxxxxxxx>
> Subject: Re: 11" x 2" Brakes?  TAKE 2!
> To: 1962to1965mopars@xxxxxxxxxx
> Date: Thursday, May 27, 2010, 2:58 PM
> 
> The shoe, drum and backing plate are all sized as a
> set.  Don't mix and match here.  The backing plate
> centers the web of the shoe with the center of the WC
> piston.  The back edge of the shoe rides on the six
> "pads" of the backing plate, and the front edge of the shoe
> is near the inside edge of the drums brake surface. 
> The offset of the drum (hub face to back edge) is also a
> consideration.  With a drum that is too deep (for 2.75
> width), it won't sit of the hub flange since it will hit the
> backing plate first.  Basically, its all a matched
> set.
> 
> The WC should be the same bore for all there. 
> Increase braking will come from more friction material
> contact area rather than more pressure from the WC. 
> The servo (self wedging) motion of the shoes will also
> dramtically increase braking force.
> 
> I use 10x2.5s on the A bodies rear when I do a disk upgrade
> with a 8.25 or 8.75 rear.  With the additional weight
> of the B bodies, the 11" rear is a good bet.
> 
> I'm just fiinishing up a set of 11x2.5 shoes, backing
> plates and drums. Sandblasting / priming / painting the
> parts. The "inside" hardware is also getting the resto
> treatment..
> 
> Mike
> 
> 
> ----- Original Message ----- From: "Dave64" <lt7dave@xxxxxxxxx>
> To: <1962to1965mopars@xxxxxxxxxx>
> Sent: Wednesday, May 26, 2010 11:02 PM
> Subject: Re: 11" x 2" Brakes? TAKE 2!
> 
> 
> So do I want to get different backing plates to stick with
> 2.5" shoes, or take the easy way out and go with the 2"
> shoes?  The 11x2 shoes are still an upgrade over my
> stock 10", and I'm sort of in a hurry to get the thing
> rolling again.  Also, are all of the 11" drums the
> same?  The 2" aren't supposed to have narrower drums,
> are they?  I would think it wouldn't matter if the
> drums are wider anyway - right?
> 
> Thanks for the help guys!
> 
> Dave
> 
> --- On Wed, 5/26/10, Mike and Linda <miclinmopar@xxxxxxxxxxxxx>
> wrote:
> 
> > From: Mike and Linda <miclinmopar@xxxxxxxxxxxxx>
> > Subject: Re: 11" x 2" Brakes?  TAKE 2!
> > To: 1962to1965mopars@xxxxxxxxxx
> > Date: Wednesday, May 26, 2010, 6:50 PM
> > 
> > I just did a quick Rock auto search. handy website,
> > really.
> > 
> > Under the 1965 Monaco; it came with 11x2 rear drum
> brakes
> > standard: Raybestos 334PG. HD and Wagons got 11x2.5",
> > 335PG out back.
> > 
> > More specifically:
> > 
> > 337PG are the 11x2.75 standard front drum brakes used
> with
> > 334PG 11x2 rear.
> > 336PG are the 11x3.00 HD front brakes used with the
> 11x2.5"
> > rears.
> > 
> > Mike
> > ----- Original Message ----- From: "Dave64" <lt7dave@xxxxxxxxx>
> > To: <1962to1965mopars@xxxxxxxxxx>
> > Sent: Wednesday, May 26, 2010 6:14 PM
> > Subject: 11" x 2" Brakes?
> > 
> > 
> > >
> > > First, sorry this a little off topic. I now have
> > the "new" rearend and SS springs transplanted into my
> '64
> > Belvedere. All that's left are the brakes. All
> > was moving along swimingly until I found that the new
> shoes
> > I have are 11" x 2 1/2" (as I thought they should be),
> but
> > the shoes that came off this new rearend are 11" x 2"
> > Huh? The rearend is supposed to be off a '68 GTX, but
> > I don't think 11"x2" are correct for that car. The
> > shoes I have won't work because they don't line up
> with the
> > pivot pin at the top of backing plate or with the
> wheel
> > cylinder (the shoes are too tall). Otherwise they're
> > dead ringers for what was on there. The wheel
> > cylinders are new (for a '68 GTX), and they look
> exactly
> > like what was on there and fit fine. It looks like I
> > either have to get different backing plates or figure
> out
> > what shoes I need to work with the ones I have. Anyone
> have
> > any ideas on what cars came with 11"x2" brakes?
> > >
> > > Thanks,
> > >
> > > Dave
> > >
> > >
> > >
> > >
> > >
> > > ----
> > > Please address private mail -- mail of interest
> to
> > only one person -- directly to that person.
> > I.e., send parts/car transactions and negotiations as
> well
> > as other personal messages only to the intended
> recipient,
> > not to the Clubhouse public address. This practice
> will
> > protect your privacy, reduce the total volume of mail
> and
> > fine tune the content signal to Mopar topic. Thanks!
> > >
> > > 1962 to 1965 Mopar Clubhouse Discussion
> Guidelines:
> > > http://www.1962to1965mopar.ornocar.org/mletiq.html and
> > http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.
> > >
> > >
> > 
> > 
> > ----
> > Please address private mail -- mail of interest to
> only one
> > person -- directly to that person. I.e., send
> > parts/car transactions and negotiations as well as
> other
> > personal messages only to the intended recipient, not
> to the
> > Clubhouse public address. This practice will protect
> your
> > privacy, reduce the total volume of mail and fine tune
> the
> > content signal to Mopar topic. Thanks!
> > 
> > 1962 to 1965 Mopar Clubhouse Discussion Guidelines:
> > http://www.1962to1965mopar.ornocar.org/mletiq.html and
> > http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.
> > 
> > 
> > 
> > 
> 
> 
> ----
> Please address private mail -- mail of interest to only one
> person -- directly to that person.  I.e., send
> parts/car transactions and negotiations as well as other
> personal messages only to the intended recipient, not to the
> Clubhouse public address. This practice will protect your
> privacy, reduce the total volume of mail and fine tune the
> content signal to Mopar topic.  Thanks!
> 
> 1962 to 1965 Mopar Clubhouse Discussion Guidelines:
> http://www.1962to1965mopar.ornocar.org/mletiq.html and
> http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.
> 
> 
> 
> 
> 
> 
>