Z28HO

I am installing a new Strange 12 bolt in my car to replace my busted 10 bolt. I previously had drums. I am adding disc with the new 12 bolt. I got the 12 bolt with c-clip eliminators. The brake kit I have is kind of my own creation. I have calipers and brackets for a 93-97 Z28 which are new, I have 92 camaro e-brake cables, clips and stainless hard lines, I am also using a Baer Eradispeed rear rotor kit for a 93-97 Z28 which incorporates 13" rotors with the 2 piece hats and the needed caliper brackets and stainless hoses.

Now the problem I am having is with spacing. With everything mounted the rotors are not sitting properly with the caliper brackets, they are rubbing on the inside of the rotors. For sake of testing I have used washers behind the rotor on the wheel studs which helped space the rotor out and almost center it in the caliper bracket. I have contacted both Baer and Strange with this issue and neither has been much help. The other issue I have is the spacingon both side they are not equal. I was debating making a spacer to run behind the rotor but npt sure if that is the right way to go. My next thought is to have material machined off of either the caliper bracket or the baer adapter bracket.

I have taken some pictures of what I am working with here
http://community.webshots.com/album/549615792vJoNMf

I am wondering if anyone has run into a problem like this or If anyone has suggestions as to what route I might take.

ebmiller88

iTrader: (7)

Your link isn't working...fix it and I'll take a look at what you got... It seems to be a problem with how the bracket locates the carriers and the spacing of the two. It may be as simple as a bracket swap.

Ed

Z28HO

Sorry about that I think its working now

Thanks Ed

ebmiller88

iTrader: (7)

OK, now I see. It looks to me that it's an issue with the c clip eliminators. Your disc backing plates aren't sitting completely flush against the axle flanges, and that's where the issue is. I also notice that the backing plates are completely flat, stock disc backing plates have a bit of offset built into them, using a set of stock 10 bolt plates might cure you but I still feel that your plates sitting flat against the flanges will fix it. The issue is evident in pic 2357.

Ed

Z28HO

I have a new set of stock disc backing plates which is what I was going to use with the stock size rotors. But I went with the larger Baers and they don't move the caliper out far enough to clear the 13" rotor. So if I am to make this setup work which I want to for the looks since I have the matching C5 brakes up front with the Baer rotors.

I think I am stuck either maching the caliper mounting brackets at the surface where they bolt on to the backing plates .083 on the drivers side and .135 on the passenger side still not sure why they are off so much side to side but I measured them.

My other thoughts were to make a spacer the exact size of the face of the axle I can use different thickness of steel or aluminum and I can cut them out on the waterjet at work. This would work sitting in between the axle and the rotor and be better than using washers like I used for mock up because washers all seemed to vary too much in thickness.

Mark

85MikeTPI

iTrader: (2)

FWIW, in the instructions for my Moser 12bolt, it says you need to install a 1/8" spacer
between the axle bearing and the brake flange, when using '93-'97 brakes. I used
'98 (LS1) brakes on mine, and didn't require the spacer...

Z28HO

Mike I wish I had the sapcing problem going the oposite way but I dont'. If I space out the bracket anymore it will just press the caliper bracket against the rotor. Right now as it is I have removed the bracket that holds the axle and replaced it with the baer bracket which was the same thickness. My only options are to make that bracket thiner which I don't want to do, or to thin up the caliper bracket or to space out the rotor somehow.

Mark

ebmiller88

iTrader: (7)

Baer bracket for larger rear rotors, I forgot that. Looks like your best option is to machine a bit off the carrier bosses, seems like the best option with what you have to deal with. Those are fairly reasonable to replace if you had to.

Ed

Z28HO

I guess I am going to try that route, was just making sure I didn't overlook something. I guess nothing is ever easy with aftermarket parts and doing conversions. Thanks for the input.

Z28HO

Ok rearend is installed and everything clears now. Final issues I am having are with the brake hard lines for the rear end. I bought new hardlines from inline tube for a disc brake rear. I bolted them up the issue I am having is with the brake hoses bolting up. The hardline ends are aimed directly at the rotors and the stainless brake hoses I have wont bolt on with out contacting the rotor. At this point do I get a 90 degree adapter for the hard lines or the brake hoses or do I attempt bending the brake lines 90 degrees. And then I need to adjust the e-brake and I am ready to roll.

Neil87Z28

Z28HO - did you use the backing plates that Strange supplies for 93-97 disc brakes?

Z28HO

No I did not get those and they probably wouldn't have worked with the larger rotors on the rear
I had the backing plate brackets from Baer for a 93-97 which I had to trim slightly.
I then drew up a small spacer out of 18ga stainless and cut out on the water jet at work that I used behind the rotor and this got me the correct spacing I needed

Neil87Z28

Thanks. Also, did you by any chance measure the axle flange diameter? I talked to a rep at Strange today who said that the flange diameter was 6 1/4". He said it would work with the LT1 rotor hat, but my understanding is the the ID of the rotor hat is 6". Thanks. -Neil