JL8 Front Brake Installation - Team Camaro Tech
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post #1 of 16 (permalink) Old Mar 7th, 09, 09:14 PM Thread Starter
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JL8 Front Brake Installation

I am working on putting a JL8 brakes on the front of my camaro but when I put the rotor on, the caliper will not gone unless I put washers behind the rotor. My question, is it safe to use washers behind the rotor so it can come out approximately 1/16 of a inch. I am using drum hubs on disc spindles. I was thinking I could use a stainlees steel circular saw blade and trim in so that it would fit inside of the rotor; that way the measurement would be consistant all the way around the hub. Not sure though, it may be to flimsy. Any suggestions are welcome and thanks in advance.
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post #2 of 16 (permalink) Old Mar 8th, 09, 01:42 AM
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Re: JL8 Front Brake Installation

I have heard of the calipers getting or needing shims,but not the rotors!!!!!!!

how did you shim the rotors?

did you put washers behind the tapered bearing?

this does not sound like a good idea!!!!!!!!!

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post #3 of 16 (permalink) Old Mar 8th, 09, 04:25 AM
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Re: JL8 Front Brake Installation

Are you confusing JL8 brakes with standard disc brakes? JL8 was the rear disc brake option on a Camaro. I definitely would not shim the rotors out. Sounds to me like you've got a batch of mis-matched parts.

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post #4 of 16 (permalink) Old Mar 8th, 09, 07:23 AM Thread Starter
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Re: JL8 Front Brake Installation

The rotors are like a hat (corvette type) where you slip them on over the drum brake hub. You can put washers behind the rotor to bring it out some. I did not mean putting shims on the bearings. In other words the rotor and hub are two separate parts.

JL8 brakes were use on the front as well as the back. My back is perfect, it is just the front that I can't seem to cooperate.
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post #5 of 16 (permalink) Old Mar 8th, 09, 07:50 AM
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Re: JL8 Front Brake Installation

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Originally Posted by rsb0719 View Post
The rotors are like a hat (corvette type) where you slip them on over the drum brake hub. You can put washers behind the rotor to bring it out some. I did not mean putting shims on the bearings. In other words the rotor and hub are two separate parts.

JL8 brakes were use on the front as well as the back. My back is perfect, it is just the front that I can't seem to cooperate.
thats right, they are hub less......

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post #6 of 16 (permalink) Old Mar 10th, 09, 03:04 PM
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Re: JL8 Front Brake Installation

Rather than using washers, you should make a pattern and have a machine shop make you a pair of spacers that will be the correct thickness and cover the entire face of he hub.

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post #7 of 16 (permalink) Old Mar 10th, 09, 04:32 PM
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Re: JL8 Front Brake Installation

Are you sure you have the right rotors? If you're using vette rotors, I think the front rotors have a slightly different offset than the rear (but I forget which direction each one is). Pretty sure JL8 uses the "front" vette rotor.

When you try to install the calipers, what's hitting? If it's just the inside pad, I'd probably try to sort out a way to shave the pad (take a belt sander to it?) and thin it out (assuming there's lots of meat there).

Fundamentally, I don't think there'd be anything catastrophically wrong with running a spacer, it should be similar to running a wheel spacer in terms of loading, etc. It does tend to put a little bit of a bending load in the wheel studs if anything moves, though and if you can sort some other solution out, I'd avoid running spacers if possible. If you do have to run them, definitely make something that's "full width" rather than use individual washers.
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post #8 of 16 (permalink) Old Mar 10th, 09, 06:26 PM
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Re: JL8 Front Brake Installation

my front rotors are .390 thick in the hub area , and the rear are .295. how much space is there between the rotor and the top spindle bolt ?
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post #9 of 16 (permalink) Old Mar 10th, 09, 09:24 PM
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Re: JL8 Front Brake Installation

Rear JL8 rotors have a 1/16" deeper hat dimension than the front. You may have rear rotors on the front.

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post #10 of 16 (permalink) Old Mar 11th, 09, 03:50 PM Thread Starter
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Re: JL8 Front Brake Installation

This is the Part no. on the box 52-60240 & sku BR 5544.
The box also has the rotor numbers that it replaces as follows:

RAY 5500
SBC AR8210
UBP U101440
WAG BD60240

When I look them up on the internet, the RAY 5500 says front for a vette.
I took the washers off, the caliper will not go on the bracket, it's 1/16 off. David is probably right, they must be for the rear.

Thanks everyone for your help.
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post #11 of 16 (permalink) Old Mar 11th, 09, 06:29 PM
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Re: JL8 Front Brake Installation



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post #12 of 16 (permalink) Old Mar 11th, 09, 08:38 PM Thread Starter
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Re: JL8 Front Brake Installation

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Originally Posted by mark x22 View Post


Not sure what you are using inches or millimeters; any my is approximately 57/64" or .89063 mm. The rotors are corvette front; I am thinking it maybe the bracket. My front rotors are exactly like yours and so are the rears.

Last edited by rsb0719; Jun 19th, 14 at 04:39 PM.
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post #13 of 16 (permalink) Old Mar 12th, 09, 03:03 PM
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Re: JL8 Front Brake Installation


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post #14 of 16 (permalink) Old Mar 12th, 09, 04:39 PM Thread Starter
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Re: JL8 Front Brake Installation

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Originally Posted by mark x22 View Post


Spindle bolt to rotor is 3.5 inch where yours is 3.38 inches
Hub to rotor is 1 inch where yours is 1.02 inches
Hub is .15625 inches where yours is .220 inches
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post #15 of 16 (permalink) Old Mar 13th, 09, 12:48 PM
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Re: JL8 Front Brake Installation


Robert compare this to yours .
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