Disc brakes- need help with rotors
Thread Starter
Joined: Jun 2007
Posts: 12
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Disc brakes- need help with rotors
Hello everyone, ran into another snag on the rebuild of the 70' Duster.
A little background knowledge about the car: it is a slant 6 duster, BUT with a high performance suspension package of some kind from the factory. the Duster has STOCK 4 piston disc brakes. heres the problem: I ordered the SSBC brake conversion kit before i knew that the car was a factory disc brake car. The SSBC kit comes with 4 piston brake calipers that are IDENTICAL to the stock ones, and the rotors are not the same as stock.As i am putting the brakes together, i realized that because the SSBC kit is a conversion kit, and has a conversion plate for the drum brake spindles to be able to bolt the calipers, SSBC had to make a rotor that has the same offset. So, the rotors are offset too far inward for the calipers to bolt up properly, and i cannot find anyone who sells a set of rotors meant for factory disc brakes. The problem gets worse, the bolt pattern for the old rotors are 5X4", and to be able to use any wheel other than stocki needthe 5X4 1/2" pattern. None of the local stores orany websites i could find have2 piece rotors needed for this (66-72? style) they only carry the newer, incorrect, single piece casting 73+ Does anyone know where i could find any of the following?
1. An older style 2 piece rotor WITH a 5X4 1/2" bolt pattern.
2. An aftermarket rotor that will work with the factory disc brake spindles and has the 5X4 1/2"bolt pattern.
3. Drum brake spindles that work with the SSBC kit.
I have been looking forever for a solution and have almost exhausted my resources. please help me out on any of the 3 options above, or another way that would work. please help!!! -thanks.
A little background knowledge about the car: it is a slant 6 duster, BUT with a high performance suspension package of some kind from the factory. the Duster has STOCK 4 piston disc brakes. heres the problem: I ordered the SSBC brake conversion kit before i knew that the car was a factory disc brake car. The SSBC kit comes with 4 piston brake calipers that are IDENTICAL to the stock ones, and the rotors are not the same as stock.As i am putting the brakes together, i realized that because the SSBC kit is a conversion kit, and has a conversion plate for the drum brake spindles to be able to bolt the calipers, SSBC had to make a rotor that has the same offset. So, the rotors are offset too far inward for the calipers to bolt up properly, and i cannot find anyone who sells a set of rotors meant for factory disc brakes. The problem gets worse, the bolt pattern for the old rotors are 5X4", and to be able to use any wheel other than stocki needthe 5X4 1/2" pattern. None of the local stores orany websites i could find have2 piece rotors needed for this (66-72? style) they only carry the newer, incorrect, single piece casting 73+ Does anyone know where i could find any of the following?
1. An older style 2 piece rotor WITH a 5X4 1/2" bolt pattern.
2. An aftermarket rotor that will work with the factory disc brake spindles and has the 5X4 1/2"bolt pattern.
3. Drum brake spindles that work with the SSBC kit.
I have been looking forever for a solution and have almost exhausted my resources. please help me out on any of the 3 options above, or another way that would work. please help!!! -thanks.
Muscle Car Moderator
Joined: Jun 2005
Posts: 569
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From: Smells like New Jersey
RE: Disc brakes- need help with rotors
You don't have many good options here.
1) You are not going to find a 2 piece rotor in a 5x4.5
2)Nothing I know of aftermarket will work with your combo
3) This will be your best bet, but you might need to change the control arms also.
Is it that important to have the 4.5 pattern? You can still get replacement rotors for the factory Kelsey-Hayes system (4" pattern).
The other alternative is to find a newer A-body and rape it for all the newer disc stuff and go with the less expensive and easier to find one piece rotor/single piston stuff.
1) You are not going to find a 2 piece rotor in a 5x4.5
2)Nothing I know of aftermarket will work with your combo
3) This will be your best bet, but you might need to change the control arms also.
Is it that important to have the 4.5 pattern? You can still get replacement rotors for the factory Kelsey-Hayes system (4" pattern).
The other alternative is to find a newer A-body and rape it for all the newer disc stuff and go with the less expensive and easier to find one piece rotor/single piston stuff.
Thread Starter
Joined: Jun 2007
Posts: 12
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From:
RE: Disc brakes- need help with rotors
Well, i founda pair of spindles from a 70' dart with drum brakes on it from ebay that was cheap enough, so im going to just use the whole conversion kit from SSBC that i got, and stop worrying about all of this. Having a 4.5" bolt pattern isnt too important performance wise i dont believe, but if you stay with the 4" pattern your choice of wheels goes from hundreds of choices, to two that i know of, and one of them is stock. So theres one of the problems solved, now i have to figure out the how the clutch pedal works with that spring and such, thanks for the input on the brake issue!
