Classic Mustangs List Archive

This read-only message was archived from a public mail list.
Mail From: ssixto ((email redacted))

hi guys,

we installed 2.5" x 10" rear drums from a 72 Ranchero on our 66 Coupe.
the key to the installation was Dorman 610-148 wheel studs.


as we were rebuilding the rear end and housing on this car, we decided
that the wimpy rear drums had to go. i really didn't want to go through the
hassle of doing a rear disk brake conversion. but we wanted more stopping
power out back to go with the Granada front disks we'd installed earlier.
i knew i there must be some Ford out there with the same bearing retainer
bolt pattern but with larger brakes. meaning that all we would need was a
backing plate and some hardware to make it all work. right ?

so off to the JY we went armed with the retainer gasket. after about 30
minutes of looking what do we see, hanging only by their parking brake
cables are a pair of fully loaded backing plates on a 72 Ranchero. all the
hardware looked relatively new, and the shoes still had plenty of meat on
them. i guess the owner did a complete brake job before junking the car.
somebody just wanted the axles and left the rest behind. even the bolts
were still on the ground nearby. anyway, we held up the gasket and sure
enough, a perfect fit. score !

so everything came home and went through a thorough scrubbing and
repainting. the hardware only needed to be cleaned, the backing plates
were kinda grubby, but cleaned up nice and looked great painted. they
bolted on to the rear end housing and onto the car it went.

over the course of the next couple of of weekends we finished off the rest
of the rear suspension and finally re-assembled the rear brakes. the last
part was to install the huuuge brake drums and then the new wheels.

BUT, the wheel hub OD on the original axles was smaller than the new
brake drums center hole ID. a mismatch that meant there was nothing to
locate the drums on the axles. the original studs only had thread protruding
from the wheel hub, and the thread OD is smaller than the ID of the holes
where they poke through the drum. @#$%^&*! and other unprintables too.

we gnashed our brains for a couple of weeks, and i'm pretty sure we sought
advice here. but finally after removing one wheel stud we realized that it's
shoulder was the right diameter fit the matching ones in the drum. besides,
the Granada front disks located the wheels this way. so after consulting our
favorite counterman, we found the 610-148's. they have an extra 3/8 of
shoulder over the stock studs, before the taper down to the threads. given
that the drums are about 1/4" thick at that point we knew we were on the
right track.

pulled the axles, took them to the shop, got them back with shiny new studs,
re-installed them with all new gaskets and torqued everything to spec. when
the drums went on, there was just under 1/8" showing before the taper down
to the threads. and no rotation between the wheel hub and the drum. the perfect
solution. the Vintage wheels hubs are about 1/2" thick, so all the lug nuts
see
are threads. and a good thing we did this too, now there are more threads for
the nuts to bite than would have been the case with the original studs.



----------------------------------------------------------------------------------------
thanks, "for evil to triumph,
sixto good men need only do nothing"

This read-only message was archived from a public mail list.
Mail From: mustangmail ((email redacted))

Excellent information. Now I have another option.

I've been looking for 2.5 width brake parts for quite a while. Thanks for the great detaied description and part numbers.

Anybody else have other 2.5 width brake option information?


>
> From: (email redacted)
> Date: 2005/06/11 Sat PM 07:15:03 EDT
> To: (email redacted),
> Ford <(email redacted)>
> Subject: [CM] 66 Coupe - 2.5" x 10" rear drums
>
> hi guys,
>
> we installed 2.5" x 10" rear drums from a 72 Ranchero on our 66 Coupe.
> the key to the installation was Dorman 610-148 wheel studs.
>
>
> as we were rebuilding the rear end and housing on this car, we decided
> that the wimpy rear drums had to go. i really didn't want to go through the
> hassle of doing a rear disk brake conversion. but we wanted more stopping
> power out back to go with the Granada front disks we'd installed earlier.
> i knew i there must be some Ford out there with the same bearing retainer
> bolt pattern but with larger brakes. meaning that all we would need was a
> backing plate and some hardware to make it all work. right ?
>
> so off to the JY we went armed with the retainer gasket. after about 30
> minutes of looking what do we see, hanging only by their parking brake
> cables are a pair of fully loaded backing plates on a 72 Ranchero. all the
> hardware looked relatively new, and the shoes still had plenty of meat on
> them. i guess the owner did a complete brake job before junking the car.
> somebody just wanted the axles and left the rest behind. even the bolts
> were still on the ground nearby. anyway, we held up the gasket and sure
> enough, a perfect fit. score !
>
> so everything came home and went through a thorough scrubbing and
> repainting. the hardware only needed to be cleaned, the backing plates
> were kinda grubby, but cleaned up nice and looked great painted. they
> bolted on to the rear end housing and onto the car it went.
>
> over the course of the next couple of of weekends we finished off the rest
> of the rear suspension and finally re-assembled the rear brakes. the last
> part was to install the huuuge brake drums and then the new wheels.
>
> BUT, the wheel hub OD on the original axles was smaller than the new
> brake drums center hole ID. a mismatch that meant there was nothing to
> locate the drums on the axles. the original studs only had thread protruding
> from the wheel hub, and the thread OD is smaller than the ID of the holes
> where they poke through the drum. @#$%^&*! and other unprintables too.
>
> we gnashed our brains for a couple of weeks, and i'm pretty sure we sought
> advice here. but finally after removing one wheel stud we realized that it's
> shoulder was the right diameter fit the matching ones in the drum. besides,
> the Granada front disks located the wheels this way. so after consulting our
> favorite counterman, we found the 610-148's. they have an extra 3/8 of
> shoulder over the stock studs, before the taper down to the threads. given
> that the drums are about 1/4" thick at that point we knew we were on the
> right track.
>
> pulled the axles, took them to the shop, got them back with shiny new studs,
> re-installed them with all new gaskets and torqued everything to spec. when
> the drums went on, there was just under 1/8" showing before the taper down
> to the threads. and no rotation between the wheel hub and the drum. the perfect
> solution. the Vintage wheels hubs are about 1/2" thick, so all the lug nuts
> see
> are threads. and a good thing we did this too, now there are more threads for
> the nuts to bite than would have been the case with the original studs.
>
>
>
> ----------------------------------------------------------------------------------------
> thanks, "for evil to triumph,
> sixto good men need only do nothing"
>
>
> _______________________________________________
> Classic-mustangs mailing list
> (email redacted)
> lists.twistedpair.ca/mailman/listinfo.cgi/classic-mustangs
>

This read-only message was archived from a public mail list.
Mail From: rickl (rick)

Sixto,
Nice post!

rick

> we installed 2.5" x 10" rear drums from a 72 Ranchero on our 66 Coupe.
> the key to the installation was Dorman 610-148 wheel studs.
>
[snip]