2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Did all 91's come with 4 piston ventilated front brakes?

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Old Sep 1, 2010 | 02:59 PM
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Did all 91's come with 4 piston ventilated front brakes?

Just like the title implies, it *appears* so in the specs guide posted in the archives/sticky, but I could have swore that each model year had one base that had solid fronts and single-piston. I may pick up another RX-7, this one's an N/A that was converted to Turbo, and I'm always leery of those...
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Old Sep 1, 2010 | 03:11 PM
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No not all 91's came with 4 piston. Of the three models made that year TurboII and Vert always came with the 4 piston setup. I have seen a few late production 91's that had them, not knowing the original owner I cant verify that they were factory, but otherwise being 100% stock cars I would assume mazda ended up using the leftovers for the final runs to possibly cut costs or just get rid of the stock.
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Old Sep 1, 2010 | 03:23 PM
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No, my '91 NA had single piston front calipers.
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Old Sep 1, 2010 | 03:28 PM
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sorry for newbin up the place but how could i find out. i have a 91 n/a but i dont know what brakes i have
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Old Sep 1, 2010 | 03:50 PM
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Look at them.

Look at your rear brake rotors, if they are vented, then you should have 4 piston calipers up front.

If your rear brake rotor is not vented *it will be thin*, then you should also have single piston calipers up front.

This is what the 4 piston calipers look like.
http://www.zerotohundred.com/newforu...e-image001.jpg
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Old Sep 1, 2010 | 10:33 PM
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ok thanks, ive got 4 piston
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Old Sep 1, 2010 | 10:38 PM
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In '91, there was no more "GXL" or "GTU" model designation. All the NAs were simply Coupes. I believe the brake setup was determined by option package. They were called A and B or something like that. One was essentially the equivalent of the '89-90 GTU base car and the other was more like the GXL. One difference is that all '91s had power windows. You hear rumors that Mazda did a lot of substitution on the assembly line in the final days of FC production so some odd mixes of features do reportedly exist.
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Old Sep 2, 2010 | 12:43 AM
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Originally Posted by daviddeep
One difference is that all '91s had power windows.
Maybe in the states, but not in Canada.
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Old Sep 2, 2010 | 02:48 AM
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my 91 came with single pistons..
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Old Sep 2, 2010 | 09:40 AM
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ALL US-Spec 92s had 4-piston, but not 91.

92's were all leftover verts from 91, and verts had 4-piston from the factory.
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Old Sep 2, 2010 | 11:55 PM
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Originally Posted by scathcart
Maybe in the states, but not in Canada.
Interesting. I did not know that. It is surprising how many differences there were between U.S. and Canadian spec cars, especially with the S5s.

I thought there were no U.S.-spec '92s; I thought all those '92 model year convertibles went to Japan and Europe. I don't believe I've ever seen one in person. Isn't it true that they had tan leather interiors?
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