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rip
June 26th 2005, 00:08
yea I know theres a post like four down that talks about this but figured it be best to split the topics.

anyways I'll be running Rx7 front brakes thanks to Lanner, and now need to start thinking about the rears. See I had orginally just thought to get CB's rear kit then to get them drilled or if $$$ permitting would get spacer/adaptors.

Well I just ordered the rims, 5zigen FN01R-C 17x7 +35mm 5x114.3 pcd. And well that left a dent in the wallet. And with the offset won't be needing spacers, might need fenders though. Anyway...Because of the over kill front brakes I don't feel theres a huge need for performance rear brakes, but I'll still be getting a disc conversion either way.

So the question is because I'd like to keep the rear's as bolt on as possible plus keep it cheap, I figured I've got two options:

Get CB's kit worry a little about studding though weak parts of the rear disc, plus get them drilled to fit the 5x4.5 pcd

or I've heard that the CB kits come with varga calipers (that are found on the ford tarus and other newer model gm cars). So go down to the local yard and find the rear calipers and a 5x4.5 bolt pattern rotor, then make a drum into a hub. This option also involves making a cailper bracket. But should be cheaper.

so any opinions? alternatives?

Lanner you mentioned starting on a Rx7 rear kit, hows that going? Think I've have to use a larger MC because of the increased fluid of the rear caliper?

Right now sort of leaning to the junk yard option, except for a few reasons.

thanks

rip
June 27th 2005, 12:57
Figured on updating you guys what I've found. The rear calipers and rotors that are on the ford, merc, and lincoln are the same. Whether or not they are the same as those CB sell I dont know. But they also vary the rotor size from what the 914 rotor is.

The stock Taurus thickness is 12.7 thick, where as the 914 is 9.5mm. I believe the difference is because of the brake pad size, if they are the same.

Either way I found that the 88-92 rear Rx7 rotor is 10mm thick and the bolt pattern I need, 5x114.3. Because this is bigger than the 9.5mm 914 rotor I may need to shave down .25mm off the brake pads, if clearance is that close, not that big of a deal.

So it seems if I get the calipers either through VW parts guys; CB, SoCal, or one of the other places that sell this same kit. And the Rx7 rotors, then CSP's rear extra thick drum. I can make a caliper bracket, machine the drum into a hub, and use the stock Rx7 rotor.

I'll probably see if Lanner can make me up a spacer that comes off the new hub to keep the wheel hubcentric and the rotor centered better.

What do you guys think?

rip
June 29th 2005, 11:04
okay so found out that a few companies including CB and German Car Company both use Mk3 Golf calipers on their "race" styled rear brake kits. And the stock thickness of rotor used on these calipers are 10mm. So...

This makes it simple now:

Machined/Studed CSP drum
88-92 Mazda Rx7 Rear Rotor (261x10mm)
93-99 Mk3 Golf Caliper