Re: [Amc-list] disk brake hack

[Wrambler242@xxxxxxxxxxx]

I looked at WPS.com. I couldn't find the brake list?
Whassup?
Proly just me!!!

--
Mark Price
Morgantown, WV
1969 AMC Rambler, 4.0L, EFI, T-5
" I was different before people dared to be different" 

 -------------- Original message ----------------------
From: Tom Jennings <tomj@xxxxxxx>
> On Fri, 2007-07-20 at 16:22 +0000, Wrambler242@xxxxxxxxxxx wrote: 
> > I got to ask, Were would you look to find smaller wheel cylinders???
> 
> >From the grand unified brake list! I already did this on my Hornet; I
> got perfect balance by changing to a smaller rear bore. All along I
> suspected that there really are very few drum brake parts. Here's what
> I've found:
> 
> * AMC used 10x2.5, 10x1.75, 9x2.5, 9x2
> * The hub front or rear does not seem to change EXCEPT for center hole
> diameter some years
> * four drums would fit all cars EXCEPT there are variations in center
> hole diameter some years
> 
> 
> * For a given SHOE WIDTH, all the wheel cylinders interchange, pending
> port location (center, front or rear; front brakes have to put the port
> to one side of the steering knuckle, is all). YOu can use front wheel
> cyls in the rear if you don't mind bending brake lines.
> 
> (The only difference between a 1" bore wheel cylinder for 2.5" wide vs.
> 2" wide shoes is the height of the bore centerline from the mounting
> surface, so that it contacts the foot on the shoe).
> 
> 
> 
> To tweak the rear wheel cylinder bore diameter, for say a 9x2.5" brake
> first figure out what you have now, then rummage through the table for
> other 9x2.5 rear brakes and see what other cyls are used. You can do
> this without the chart; the data's in the TSMs, but I compiled it all in
> one place.
> 
> Once i fill in the blanks in the table I will do the complete
> cross-reference. That's really the POINT of the project. The big listing
> is nice, but it's not new data. Tabulating every possible AMC wheel
> cylinder will be new information. For example, I can list wheel
> cylinders by bore x shoe width x port exit location x part number and
> just go shopping. 
> 
> 
> There's certainly bore diameters that AMC didn't use that would be
> useful. But knowing how few wheel cyl parameters there are means you can
> pick non-AMC parts that will bolt in, exact fit; find other-make with
> 9x2.5 bendix brakes, check port location, bolt it in.
> 
> 
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