Re: [Amc-list] Small Yard Report (9" disc brakes???)

[farna@xxxxxxx]

Joe, would you measure those things next time you're out that way? I've never heard of 9" rotors. 9" rear brakes on the 78-80 four cylinder cars (81-83 all but wagons), but not a smaller rotor. The six and V-8 cars used a 10.82" rotor, and I was under the impression that the 80-83 four cylinder cars used the same brakes (not the first time I've been wrong...). I know the 77-79 2.0L four cylinder cars used the same diameter rotor and the same caliper, but the rotor was solid, not ventilated. The pads had a thick spacer to make up the difference. 

I just looked on Rockauto.com. The four cylinder definitely uses a different rotor! I'd sure like to know the actual diameter if someone has one. The only thing 80-83 TSMs list is thickness and run-out, no diameter. Makes sense, diameter doesn't change with wear! But I sure do like all the extra specs in the older TSMs.

--------------------------
Date: Sat, 24 Feb 2007 12:45:46 -0800 (PST)
From: JOE FULTON <piper_pa20@xxxxxxxxxxx>

A-1 Auto Wreckers has an 80 concord 2-door sedan with
61,000 miles.  4 cyl (Iron 49-state Iron Duke)/auto
tranny.  Has the tilt column and a very clean dark
brown interior.  The little 9-inch disk brakes (4-cyl
cars had these) are in very good condition and might
be a light weight alternative for a drag car.  

--
Frank Swygert
Publisher, "American Motors Cars" 
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AMC.html
(free download available!)
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