Re: '90 ZR-1 brake refurbish options
 

This is how they came back to me:

Re: '90 ZR-1 brake refurbish options
 

Now just waiting on SS brake lines from Doug Rippie Motorsports, and bleeder kit to start putting everything back together.

Will get better pics of calipers once I have everything.

Re: '90 ZR-1 brake refurbish options
 

Not related to brakes, but while I was just waiting around, got a thing, courtesy of Mr. Lee Gaffigan. Looks great!

Re: '90 ZR-1 brake refurbish options
 

The hot ticket that has worked well for me on the 91Z is:

96 Grand Sport calipers
Hawk HPC ceramic pads
Baer Sport drilled and slotted front rotors
Goodridge stainless brake lines
Rippie bias spring

The PBR Grand Sport calipers appear to be the same as the 96 Collectors Edition and the low line Baer and Wilwood calipers.

Had Hawk HPS pads, little bite on the street.

Baer Sport rotors don?t have the aluminum hats and are fairly reasonable.


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Re: '90 ZR-1 brake refurbish options
 

Initially went looking for the 96 CE calipers, but wasn't having any luck.

Will probably upgrade the whole system at some point, but for now will be mostly stock except for rotors & hoses.

Interesting that pads make such a big difference in brake feel, I should probably see what Powerstop recommends for use with their rotors.

Wondering what made you change the bias spring?

Re: '90 ZR-1 brake refurbish options
 

ZR-1s came with the same bias spring as base cars. The larger rear tires allows more rear braking. Very common mod for our cars.


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Re: '90 ZR-1 brake refurbish options
 

Rgr, I'm not all that smart on braking systems (although getting better) yet, this little project I have going is my first foray into that world.

I thought that a spring change might be needed if I upgraded, it was a factor in my decision to stay with stock calipers if possible, didn't want to go messing with the master cylinder (for now anyway).

What spring did you use and how has the braking system performed as a result?

Also if you have pics of your setup wouldn't mind seeing it. :D

Thanks for posting!

Re: '90 ZR-1 brake refurbish options
 

Pictures don?t show much with the wheels on Attachment 19901


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Re: '90 ZR-1 brake refurbish options
 

Trying to disconnect the old brake hoses and of course they are giving me a hard time.

Can anyone confirm the correct wrench sizes for the hose to steel line coupling?

Pics attached.

Re: '90 ZR-1 brake refurbish options
 

When I replaced my brake hoses there was one that would not break loose regardless of the wrench. My last resort was a new pipe wrench with sharp teeth that I was able to get a good hold of the nut with and it broke loose. I was greatly relieved. There are possibly other ways to grip that nut securely enough. Just saying what worked for me.