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Old 03-31-2017   #1
Ronstar
 
Join Date: Jul 2012
Location: Michigan
Posts: 182
Default Zr1 brakes on 85

I got an extra set of Zr1 front calipers that I want to put on my wife's 85. Anyone know where I can get an adapter for the caliper braket
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1990 421ci ZR-1
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Old 03-31-2017   #2
WVZR-1
 
Join Date: Oct 2004
Posts: 1,890
Default Re: Zr1 brakes on 85

Quote:
Originally Posted by Ronstar View Post
I got an extra set of Zr1 front calipers that I want to put on my wife's 85. Anyone know where I can get an adapter for the caliper braket
If your wife's '85 still has 16" wheels I don't believe that you can do the J55/13" brakes. Blowerworks had one set he offered up a couple of weeks ago that would be needed maybe! This kit would allow dual piston later calipers for sure but 13"?

Directions to get to it in his catalog in this thread. I found it!

http://www.corvetteforum.com/forums/...post1594268014

I tried to upload the .pdf catalog and it wouldn't allow it.
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Old 03-31-2017   #3
Ronstar
 
Join Date: Jul 2012
Location: Michigan
Posts: 182
Default Re: Zr1 brakes on 85

Those brackets were for Jb9 brakes,not J55. Yeah I got big wheels on it.
If I even had a schematic I could have someone machine a pair
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Old 04-01-2017   #4
WVZR-1
 
Join Date: Oct 2004
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Default Re: Zr1 brakes on 85

Quote:
Originally Posted by Ronstar View Post
Those brackets were for Jb9 brakes,not J55. Yeah I got big wheels on it.
If I even had a schematic I could have someone machine a pair
If the adapter bracket was only intended to be used as knuckle/spindle mounting points I'd think that maybe the 13"/J55 abutments and calipers could be adapted. Certainly don't know but you're the guy wanting so maybe YOU do the research.

Sell the J55 stuff and buy the wife some "real" brakes maybe!
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Old 04-01-2017   #5
XfireZ51
 
Join Date: May 2007
Location: Chicagoland, IL
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Default Re: Zr1 brakes on 85

Quote:
Originally Posted by WVZR-1 View Post
If the adapter bracket was only intended to be used as knuckle/spindle mounting points I'd think that maybe the 13"/J55 abutments and calipers could be adapted. Certainly don't know but you're the guy wanting so maybe YOU do the research.

Sell the J55 stuff and buy the wife some "real" brakes maybe!
I'd take Dave's advice and throw on a set of the C5 brakes since you have larger wheels.
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Old 04-01-2017   #6
WVZR-1
 
Join Date: Oct 2004
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Default Re: Zr1 brakes on 85

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Originally Posted by XfireZ51 View Post
I'd take Dave's advice and throw on a set of the C5 brakes since you have larger wheels.
I wasn't actually thinking the C5 change but maybe "real" brakes. Anything done with any type of adapter is maybe questionable at best. Find someone with 50K miles on a package that was done with adapter bracketry of sorts and maybe that changes.
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Old 04-01-2017   #7
Ronstar
 
Join Date: Jul 2012
Location: Michigan
Posts: 182
Default Re: Zr1 brakes on 85

Really not trying to spend much on an 85. Just saw my zr1 brakes and calipers sitting there so for the price of a couple braket adapters I'd throw them on. I'm sure I saw such an animal years ago. Really don't want to go hacking up her car either. I have looked everywhere else I could think of thought maybe someone here might know. Guess I'll just leave it be. That's for the replies!
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Old 04-01-2017   #8
XfireZ51
 
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,708
Default Re: Zr1 brakes on 85



Not that I'm suggesting using C6Z06 brakes on an 85. However, I did have C5 brakes for many years on my 84 Xfire.

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[SIGPIC][/SIGPIC]Former Membership Chairman
Former ZR-1 Registry - BOD
1972 Corvette 4speed base Coupe SOLD long time ago
1984 Corvette Z-51/4+3 SOLD
1992 Corvette ZR-1 Aqua/Gray #474 SOLD
1992 Corvette ZR-1 Black Rose/Cognac #458
2014 Honda VFR Interceptor DX

Last edited by XfireZ51; 04-01-2017 at 10:55 AM.
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