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-   -   Optional Rotors and Calipers? (http://www.clubcobra.com/forums/era-speak-bob-putnam/112767-optional-rotors-calipers.html)

Jeff Frigo 09-30-2011 07:47 PM
Optional Rotors and Calipers?
 
Bob,or else:

Im trying to figure out what is necessary for optional front brakes with 15" wheels. The only part numbers I come up with are for the Wildwood rotors.
160-3871, and160-3870. Can you supply P/N's for the hats, hubs, and calipers for bolt on 15" wheels? Also, can I use a GM knuckle? Does it need to be modified? What needs to be done to it if usable?

Sorry, I looked through all three manuals, maybe I missed it.

patrickt 09-30-2011 08:29 PM
I Have That Stuff...
 
Jeff, I have the big brake option along with the 6 pin hubs, 15" wheels. The spec documentation I have for it all shows all the part numbers, etc. -- and they're Sierra calipers, btw. Now that's a few years old, mind you. If Bob doesn't post something tonight, or early tomorrow, on this I'll scan it all in to a PDF, put it on one of my servers, and post a direct link here for you. How does that sound?

Jeff Frigo 09-30-2011 08:36 PM
Quote:
Originally Posted by patrickt (Post 1154159)
Jeff, I have the big brake option along with the 6 pin hubs, 15" wheels. The spec documentation I have for it all shows all the part numbers, etc. -- and they're Sierra calipers, btw. Now that's a few years old, mind you. If Bob doesn't post something tonight, or early tomorrow, on this I'll scan it all in to a PDF, put it on one of my servers, and post a direct link here for you. How does that sound?
Patrickt, you da man. I will try to figure out the difference for bolt on wheels. Also, I dont know much about Sierra, good stuff?

patrickt 09-30-2011 08:50 PM
Quote:
Originally Posted by Jeff Frigo (Post 1154162)
Patrickt, you da man. I will try to figure out the difference for bolt on wheels. Also, I dont know much about Sierra, good stuff?
Sierra's are good, but I think they've gotten hard to find now, at least that was true for a while -- but I don't know. Here, I went ahead and fished out the documentation, scanned it, and put it on a server. Just click here: Big Brake Option Specs

Grubby 10-01-2011 07:40 AM
I swapped my car to the big front brakes. #755

The caliper mounting bracket is different from the GM caliper to the Sierra. ERA supplied the new bracket. My knuckles are the ERA built units that are similar to GM units. I simply unbolted the GM style bracket and bolted on the newly supplied ERA bracket.

I am not sure how you would mount the Sierra's to a GM steering knuckle.

John

patrickt 10-01-2011 08:08 AM
Sierras are a tight fit...
 
http://www.clubcobra.com/photopost/d.../sierra002.jpg

http://www.clubcobra.com/photopost/d.../sierra003.jpg

http://www.clubcobra.com/photopost/d.../sierra004.jpg

strictlypersonl 10-01-2011 08:13 AM
I've posted the early-upright conversion process here. Pin-drive hubs will accept our (proprietary) hats directly. Bolt-on hubs need some machining (and use a different hat).


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