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Calipers

dyeager535 said:
If you wouldn't mind posting, I'd be curious to hear. Way too much talk about them being out there (not by you of course) yet nothing that I've seen has yet come out in the open.
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You need a front rotor from an '89 1/2 ton GM 4x4. You need to specify "standard cab, long bed, light duty". Any other application will not fit. Everything on that rotor is the same as the standard/HD version with exception to thickness of the material on front braking surface of the rotor. It is just thin enough to work with the smaller calipers.The Raybestos part # is 5977. Also, different rotor manufacturers make them a little differently so there are a couple things you need to check.

#1. Look at the back of the rotor. On the back side of the WMS (where it would slide over the axle) some manufacturers leave a little lip. That lip has to be turned off on a lathe or CNC. The manufacturer we use does not leave that lip, but I have no idea what brands your local parts stores carry so you'll have to check that.

#2. You will have to open up the center hole on the rotor to fit over the small nub on the face of the axle flange.

There is not a 6 lug application out there that does not require modification of some sort to work with the smaller calipers. We designed our kits to use a rotor that simplifies the conversion for the customer.

Disclaimer... if someone chooses to use this rotor and it does not work with brackets made by someone else..it's not my fault!:D
 
Interesting. Folks had said some of the later C/K stuff worked, but obviously you have to know exactly what to ask for, as I HAD checked into these, but any I had them pull for that vehicle (randomly by year/GVW etc) weren't thin enough.

Thanks!
 
neverendingproject said:
Shane was talking about 6 lug 88-98 4x4 front rotors or the 99up front rotors.
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Oooops...
I equated "thin rotor" with a non-vented rotor, and that's why I mentioned the Laser calipers. They'd still work on a non-vented rotor, if one with the proper measurements was found/made.


shane74 - Good to know that info (re: your kits' engineering). I hope my statement didn't offend you; that wasn't my intention. I can relate to the frustration of browsing through pages & pages of measurements in hopes of finding a set of numbers that's close to what you need; I've done it before for an aviation project. Obviously, you've done the work, and since you're in the business of making & selling kits like these, I see nothing wrong with you getting compensated for your efforts.
 
dyeager535 said:
The newer 6 lug Astro rear stuff (13"!!) would be pretty sweet, but I doubt it would all fit under a stock 15x8 wheel. :(
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FWIW: Standard Rule of Thumb is that the max rotor OD that will fit in any given wheel size is 3" smaller than the wheel size. I.E. 12" rotor in a 15" wheel, 13" rotor in a 16" wheel, etc. There are exceptions, but it is VERY caliper & wheel specific. Usually the absolute upper limit is 2" less than the wheel size.
 
jarheadk5 said:
- Good to know that info (re: your kits' engineering). I hope my statement didn't offend you; that wasn't my intention. I can relate to the frustration of browsing through pages & pages of measurements in hopes of finding a set of numbers that's close to what you need; I've done it before for an aviation project. Obviously, you've done the work, and since you're in the business of making & selling kits like these, I see nothing wrong with you getting compensated for your efforts.
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I was not offended in the least :waytogo: I don't mind helping fellow wheeling brothers out where I can. It's just that I keep pretty quiet about things as there is not a "1 size fits all" for disc conversions. I will also admit that I don't know everything there is to know about all the different types of conversions that people want to do. I will say that we have done more than 20 different axle/vehicle conversions and they all have their own gremlins to deal with. Some are easier than others. Some make you wish you had never taken on the project to begin with.:doah: A case in point is all the different 14BSF conversions alone can be a PITA. There are major differences in some years of the axles, and also between the 6 lug and 8 lug versions. Not to mention all the different versions of rear Dana axles. You'd think a rear D60 was a rear D60 right???

FWIW, we have been working on a design that incorporates the internal e-brake setup for awhile. It can definitely be made to work, but the parts to make it all work are definitely NOT cheap. The brackets are the easy part.:wink1:
 
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