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What do i need to do a complete/working 4 pot caliper conversion???

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Old Apr 19, 2005 | 08:30 PM
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Question What do i need to do a complete/working 4 pot caliper conversion???

I have the front 4pot calipers right now from a s4 t2...i want to install them in a 91 coupe...what type of rotors do i need for the front to fit the 4 pots???

should i just get a set of 4 brembo rotors???(if so what kind do i need for the front and the back, i have 91 coupe rear calipers and want to install 4 pots in the front)

So beside the rotors, do i need anything like master cylinder or lines or anything???

or is the calpiers and the rotors enough???

thank you
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Old Apr 20, 2005 | 01:15 AM
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???
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Old Apr 20, 2005 | 01:20 AM
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You need the TII rotors, Not sure if the 4 pot calipers will fit on an N/A 5 bolt hubs.

Also you will need the right brake lines for those calipers if you don't already have them.

As far as i know the N/A Mastercylinder will work as i used it for a whole summer with no problems at all

If you can manage to shave a few pounds off the car as well as doing this brake upgrade you will really notice a difference in stopping power, specially if you combine that with smaller diameter tires with a wider contact patch

I.E. 205/40/R16 what i'm using. Really makes your passengers put their hands forward
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Old Apr 20, 2005 | 06:30 AM
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Originally Posted by Rotary_7
I have the front 4pot calipers right now from a s4 t2...i want to install them in a 91 coupe...what type of rotors do i need for the front to fit the 4 pots???

should i just get a set of 4 brembo rotors???(if so what kind do i need for the front and the back, i have 91 coupe rear calipers and want to install 4 pots in the front)

So beside the rotors, do i need anything like master cylinder or lines or anything???

or is the calpiers and the rotors enough???

thank you
https://www.rx7club.com/showthread.p...per+conversion

No need to change the discs, however the rear ones on the single pistons FC's have a solid rear disc vs the double pistons caliper FC's that have a vented one.

All 5 lugs FC's use the same brake pads........

As mentioned before, you need:

- Front Calipers
- Brake lines
- Hard lines (it goes in between the caliper and the brake lines) <----- you can make your own


https://www.rx7club.com/showthread.p...per+conversion
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Old Apr 21, 2005 | 02:37 AM
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hhmmm....what exactly is a hard line???
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Old Apr 21, 2005 | 03:04 AM
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i dont know about hardlines, but you may need the soft lines that go to the caliper because i know that for SS lines there are two diff kits. And part of those kits replaces a short piece of hardline that goes and attachs at your strut and then has a rubber hose to your caliper. you may just be best off buying some ss lines for 4 piston. cost around $80 or so


anyone know if the other hardlines just mate right up to it?
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Old Apr 21, 2005 | 03:09 AM
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i juss ordered some 4pot brake lines off www.mazdatrix.com as well as a rebuilt kit...

BTW: how do u pay for the items you ordered ar mazdatrix....gets me all confused.....i picked C.O.D or sumthing since i cant find a place to put in my credit car number.....so does that mean they'll send it to my door and then i pay them after words or sumthing???

thanks
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Old Apr 21, 2005 | 04:24 AM
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yep, since you picked COD. id call em in the morning and explain and change it before they ship it.
or just leave it COD.

never dealt with m-trix so dont really know.
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Old Apr 21, 2005 | 07:54 AM
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Originally Posted by Rotary_7
hhmmm....what exactly is a hard line???
As I said, a metal brake line that goes in between the brake caliper and teh rubber(or ss) brake lines. All FC 4 port calipers use this "hard line".
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Old Apr 21, 2005 | 07:57 AM
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Originally Posted by Node
i dont know about hardlines, but you may need the soft lines that go to the caliper because i know that for SS lines there are two diff kits. And part of those kits replaces a short piece of hardline that goes and attachs at your strut and then has a rubber hose to your caliper. you may just be best off buying some ss lines for 4 piston. cost around $80 or so


anyone know if the other hardlines just mate right up to it?
As stated before:

You need the:

-4 pot calipers
-Brake lines for the 4 pot calipers (not the singles)
-Hard Lines from a 4 pot caliper engine, or you can make your own
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Old Apr 21, 2005 | 08:10 AM
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To make things easier:

http://www.iluvmyrx7.com/2ndgen/manu...ing_system.pdf

Page 42 on Adobe or P-40 on the manual itself. Look CAREFULLY at item number 1 on the picure, that is the Hard Line
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Old Apr 22, 2005 | 02:22 AM
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eeehhh...cant see the pic, can u please post a thumbnail here?

if not, can u teach me how to make my own hard line???
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Old Apr 22, 2005 | 02:40 AM
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is it tha thing that connects the caliper to the brake line in this pic???

http://i7.ebayimg.com/03/i/03/47/66/d3_1_b.JPG
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Old Apr 22, 2005 | 02:42 AM
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does the stock 91 coupes have these hard lines??
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Old Apr 22, 2005 | 07:59 AM
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Originally Posted by Rotary_7
is it tha thing that connects the caliper to the brake line in this pic???

http://i7.ebayimg.com/03/i/03/47/66/d3_1_b.JPG
That's it!
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Old Apr 22, 2005 | 08:00 AM
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Originally Posted by Rotary_7
does the stock 91 coupes have these hard lines??
If the coupe has 4 pot calipers yes, if not then the answer is no.
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Old Apr 24, 2005 | 03:25 PM
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Can i have instructions on how to make my own Hard Line??

Thanks
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Old Apr 24, 2005 | 04:06 PM
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Originally Posted by Rotary_7
Can i have instructions on how to make my own Hard Line??

Thanks
Its very easy,

You need:

-The tubes
-End fittings
-Tube bender

Everything else is common sense.
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