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| RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections. |
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| RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections. |
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01-08-2010, 05:48 AM
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#1 |
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Rotary Fan in Training
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How hard can it be? DIY brake upgrades
Did it ever came across your mind - 'what i am gonna do with my front 4 piston calipers' - after installing something bigger there?
I went to 13" 4 piston Brembo setup couple years ago for front of my drift FC, and having some spare 4 piston calipers, i thought about putting them on the back .... How hard can it be? I was already running rear 2005 Ford Mustang GT rotors in the back (300mm) and wanted to keep them...and of course, being able to run stock 16" FC wheels in the back for drift trainings....its easier to find free tires for 16 than 17 or 18.... In the end, its not that hard, nor expensive....but its not one of these afternoon basic upgrades either.... First come rear knuckle. I found spare on the shefl, cleaned it up a little and pressed out old bearing, installed longer wheel studs (from front of FC). All back together here :    Installing longer studs is the reason why you have to take it apart and install new bearing. If you want to use wheel spacers with own studs, you can skip this step. Bolting on adapter is pretty simple, 3 small bolts and one bigger with spacer...     Then the ring for centering of rotor  And now rotor :  Here we are !   And now, special feature for those who must have something MORE  If you have cut the one of the 'eyes' for stock caliper, you can install 2 calipers. In my case it will be one caliper for normal braking and other one for handbrake - independent hydraulic handbrake. Of course, you have run new line for that handbrake...    Thats about it now, i will provide more pics and details once i`ll have it on the car, its too cold for fitting it outside Fullsize pics are here : http://rx7.cz/gallery/?Qwd=./2010-01...v=thumbs&Qis=M Last edited by Phoenix7; 05-28-2010 at 03:00 PM.. Reason: Edited title to reflect thread content |
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01-08-2010, 09:25 PM
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#2 |
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Pirate
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damn, that's just too much! Have you considered running a small single piston caliper for the hand brake, or just tying the hand brake into the rear rotors? Two extra calipers seems like a lot of weight for a race car... How's it been working out for you?
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Rotaries:They are NOT that complicated! |
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01-09-2010, 07:12 AM
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#3 | ||
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RCC Addict
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Quote:
The front calipers are aluminum. I wouldn't be surprised if the twin front brakes calipers actually weigh less than one stock rear brake caliper... -Ted
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reted_2000@yahoo.com Technical Advisor FC3S Pro http://fc3spro.com/ Quote:
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01-08-2010, 11:06 PM
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#4 |
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Sigh.....
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That's pretty damn ridiculous.
__________________
1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present." |
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01-09-2010, 12:04 AM
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#5 |
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Rotary Fan in Training
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Ok...
I'll be that guy: Whats the point? I don't drift so don't flame me if its 'drift-related'... I just don't see the car stopping that much better (if at all) with so much of it being front brakes anyway? If its just for the 'science project' of it, then cool! |
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01-09-2010, 04:36 AM
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#6 | |
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Rotary Fan in Training
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Quote:
I wanted something different, i wanted to change my hydraulic handbrake setup to independent routing and i as well wanted to use parts i had laying at the shelf... And stock rear brake calipers are more expensive, harder to repair and i was short on spares, while i had plenty of 4 piston calipers... In the front i have brembos with 2x40 and 2x44mm pistons on 330m rotors. Rear is 4x36mm i think (or maybe 35mm) Master brake cylinder is 1" from Mazda 929 and if necessary i might go for 1 and 1/16" from Mazda B4000. I already purchased adjustable brake bias regulator, will let u know how it works. |
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01-09-2010, 07:14 AM
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#7 | ||
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RCC Addict
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Quote:
If you seen any of the "pro" drift vehicles, they almost all run a 2nd brake caliper in the rear for independent handbrake control (with a dedicated handbrake lever). This has nothing to do with overall brake performance. -Ted
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reted_2000@yahoo.com Technical Advisor FC3S Pro http://fc3spro.com/ Quote:
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01-10-2010, 12:55 PM
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#8 | |
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FUCK the fucking fuckers
Join Date: Mar 2008
Location: THE only Bay Area, Northern California
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Posts: 3,172
Rep Power: 20  |
I want to see the final brake setup and how it compares to a stock TII. The upgrades up front should make it stop on a dime with nice tires.
Keep it up higgi, you always have interesting mods.
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Quote:
 Last edited by Phoenix7; 01-10-2010 at 12:58 PM.. |
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01-14-2010, 12:13 AM
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#9 |
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Pirate
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FACT: Big brake kits do NOT reduce stopping distances, they reduce brake fade during performance driving conditions... or so I've read on the internetz...
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Rotaries:They are NOT that complicated! |
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01-16-2010, 01:11 PM
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#11 |
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Big Ugly
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Seems interesting, BTW who make the adapters?
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Boosted Big Body On 335's PS3 ID: Rotordad 1986 Mazda RX7 GXL - Street ported 13BT, Haltech, 62mm, ect. 2006 MazdaSpeed 6 - Eagle, Wiseco, Cobb, ect. |
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