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  #1 (permalink)  
Old 11-19-2011, 08:32 PM
Ifit aint fix...Don't broke it
 

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Mustang II rotor problem

I just assembled my new mustangII front and am using dropped spindles. I bought what I thought were the right rotors (S10) and found that they are about 1/2 inch too small in diameter and the outside shoe is tight. I am using welder series crossmember and have standard horseshoe brackets for gm metric calipers....any one got any advice what rotor I might try...(Need small Chevrolet Pattern) Thanks G&SrEsToRoD

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  #2 (permalink)  
Old 11-20-2011, 04:29 PM
Ifit aint fix...Don't broke it
 

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no answer

I woul have thought someone would have had a thought about this.......odd
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Old 11-20-2011, 06:41 PM
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It appears you have the 9 1/2 inch standard M-2 rotor that fits the Ford-M-2 calipers. I used those for a while and recently upgraded to an 11 inch rotor kit for M-2 that uses a fabricated GM style bracket to replace the M-2 bracket along with a GM metric caliper and it all fits the M-2 spindle. Both calipers were available in 5-4 1/2 and 5-4 3/4 lug patterns. Can't give part numbers because I got both in kit form from Heidt's, but, to me, it appears that is your problem.?
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Old 11-20-2011, 07:05 PM
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rotors

Actually I am using s10 rotors with special seal/bearing combo. According to the directions with the caliper brackets this combo is supposed to work using gm metric calipers.....Just need to find the right rotor...guess i am going have to start comparing my 10.5 gm rotor to 11 gm rotors and find one with less of an offset. Was hoping someone had same problem and knew what i should get
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Old 11-20-2011, 07:31 PM
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Have a look at 87 Chevy Caprice w/ 11" rotors

Quote:
NAPA 48-85664
# of Bolts : 5
Bolt Circle Diameter : 120.65 mm/4.75"
Brake Rotor Diameter : 279.4 mm/11"
Brake Rotor Discard Thickness : 24.5 mm/0.965"
Brake Rotor Thickness New : 26.3 mm/1.036"
Height : 117.8 mm/4.638"
Includes ABS Inner Sensor Ring : No
Includes Inner Bearing Cup : Yes
Includes Outer Bearing Cup : Yes
Vented / Solid : Vented
Uses:
LM67048 Inner Bearing Cone (LM67010 Brg Cup installed in rotor)
M12649 Outer Bearing Cone (M12610 Brg Cup installed in rotor)
19984 C/R seal
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Old 11-21-2011, 02:13 AM
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thats what I needed!

Thanks man that is looking like exactly what i needed. the specs are very close to correct. Even if it wont work at least its a place to start. By the way where did you find the specs on the rotor? Is there a website that lists them? I would very much like to print them and add them to my Builders book!
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Old 11-21-2011, 08:47 AM
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Quote:
Originally Posted by g&s restorod
Thanks man that is looking like exactly what i needed. the specs are very close to correct. Even if it wont work at least its a place to start. By the way where did you find the specs on the rotor? Is there a website that lists them? I would very much like to print them and add them to my Builders book!
I work at a NAPA store, and use a program called ProLink to do much of my "after-hours / Hotrodders" part lookups.

I guess 8 hours per day at work just isn't enough fun ... I gotta do it in my spare time, too.
Actually, I enjoy doing it, and trying to make a contribution and to "repay" the membership here for all of the valuable knowledge that I get on an almost daily basis.

You'll need to talk to your local NAPA supplier to set up a free ProLink account, which will give you parts availability at the store level (as well as their servicing Distribution Center)

Another couple of great resources are:
Raybestos (Click on catalog)
SKF Bearings - C/R seals

I have tons more of saved bookmarks ...
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Old 01-28-2012, 06:58 PM
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wrong

I tried your parts they weren't even close to fitting a mustang drop spindle...back 2 square 1
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Old 01-29-2012, 10:17 AM
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I was under the impression you can use a Mustang II drop spindle with Granada rotors and GM calipers. Worth looking into anyways. The Granada rotors are the Ford 5x4.5 pattern whereas the Pinto/Mustang II rotors are 4x4.25.
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Old 01-29-2012, 03:01 PM
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Quote:
Originally Posted by g&s restorod
I tried your parts they weren't even close to fitting a mustang drop spindle...back 2 square 1
Sorry it didn't work out, but I was using the "WAG" (Wild **** Guess) method, with the rather vague criteria that you included after all.

At this point, I'll suggest that you contact the manufacturer of the dropped spindles, tell him what you're working on, and get them to tell you what parts you need to make it work.

You might also find something by specs, using the NAPA Brake Illustrated Catalog

Last edited by 66GMC; 01-29-2012 at 03:08 PM.
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Old 01-29-2012, 06:36 PM
Ifit aint fix...Don't broke it
 

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sp[ndles

There is a way to use a gm rotor with the 11 inch caliper bracket on mustang 2 drop spindles. you take a 78-88 camaro rotor and remove the inner race. you then install A-13 race and bearing with a napa seal#7302436. 0n the outer (small), you use A-12 bearing (the race in the rotor is correct). This is the information i was trying to find out. Use the 266mm rotors not the 301mm. Thanks all for the effort
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