Upgrade from old drums to discs

4-Cyl. Technical/Performance Discussions
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chrisboden
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Upgrade from old drums to discs

Post by chrisboden »

I have a 93rs (you can see pics Here and it's got rear drums and rather anorexic discs on the front.

What I would like to do, is upgrade to all new 4-wheel discs, with powder coated calipers and rotors (the PC should just wear off the friction surface I'd imagine), and possibly even a brake-bias control.

Anyone know where I can buy a top-quality set of brakes, stainless lines, etc etc etc. I'd like to upgrade the MS as well while I'm at it.

Any help would be greatly appreciated.
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mr1in6billion
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Post by mr1in6billion »

Cork Sport (http://corksport.com/) has a lot of things for the MX (including a big rotor kit, pads, ss brake lines, etc). I've bought a few things from them and I was very pleased with the service I got and the quality of the products.
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jaydog5678
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Re: Upgrade from old drums to discs

Post by jaydog5678 »

chrisboden wrote:I
What I would like to do, is upgrade to all new 4-wheel discs, with powder coated calipers and rotors (the PC should just wear off the friction surface I'd imagine), and possibly even a brake-bias control.

Anyone know where I can buy a top-quality set of brakes, stainless lines, etc etc etc. I'd like to upgrade the MS as well while I'm at it.

Any help would be greatly appreciated.
The best thing to do is get a good set of front rotors (Brembo or similar), a good set of pads for the front(Hawk HP, Cobalt, etc.). The best set up for the rear is to switch over to a GS rear discs (v-6). Combine that with the 15/16 master cyl, booster, and you have your self a good combo. Stainless lines will add a little bling, bling, and will also improve pedal feel. Don't forget to top it off with a name brand brake fluid (synthetic is a good choice).
chrisboden
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Post by chrisboden »

Thanks for the tips guys :) my main problem isn't the rotors, I can get those anywhere, I'm having a bit of trouple finding really good calipers. Any reccomendations? How do I make sure I get the right size calipers? What are the "Big Brake" kits I see? Do calipers and rotors have to be specificly matched in sizing? Will I have to run new brake lines if I upgrade my rears from drum to disc?
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jamario
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Post by jamario »

IF LIFE DOESN'T OFFER A GAME WORTH PLAYING, THEN INVENT ONE.
chrisboden
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Post by chrisboden »

And how do I solve the caliper problem?

Is there a writeup somewhere on how to do the drum to disc conversion?
Christopher "Duck" Boden
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monty73741
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Post by monty73741 »

A word comes to mind on this topic



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jaydog5678
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Post by jaydog5678 »

chrisboden wrote:And how do I solve the caliper problem?

Is there a writeup somewhere on how to do the drum to disc conversion?
Allright then. Buy remanufactured calipers from http://www.rockauto.com. You need the rear spindles from a 92-93 GS, rotors, pads, e-brake cables and preferably the 15/16 master cyl, booster, front brake lines, and proportioning valve. You should have a completed rear drum to disc conversion done RIGHT.
chrisboden
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Post by chrisboden »

Thank you, sounds like an excellent plan. Is this something a non-mechanic can tackle (I'm rather handy with a wrench), or is it best left to a serious pro? It doesn't sound terribly difficult, but I am dealing with critical systems here and I just thought I should check before diving in.
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jaydog5678
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Post by jaydog5678 »

Yes a home mechanic could do it. The hardest part would be getting the parts from the GS. You would need to undo the e-brake cables from underneath the v-6 model. Their are several 10mm bolts holding this all in place along the way leading to the rear calipers. 4 nuts holding the booster on from underneath the dash, again 10mm. Two 12mm bolts holding the proportioning valve. You need a flare wrench for the brake lines without damaging the flared nuts - all 10mm. The brake lines will snap in and out of their clips that hold them leading to the front calipers. Getting to the proportioning valve might be the most difficult. It's on the firewall, practiclly in the middle behind the intake manifold. Off the top of my head, I don't know what size nuts/bolts hold the GS rear spindles on. I'm thinking 17mm. Make sure you bring a breaker bar for this. Finding replacement pads, rotors, and hardware should be no big deal.
chrisboden
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Post by chrisboden »

You are my hero of the day, thank you! :)

I'll likely just buy the parts new instead of trying to harvest them in a junkyard. Is there any particular place for shopping for MX3 parts that would be preferred? I'd like to not get assraped at the dealer if I can help it ;)

I've checked the links here, but they're all flash and trim parts. I can find 500 places to get neon everything and pretty body bits, but trying to get things like an intake manifold, or brake calipers or whatnot are rather difficult it seems.
Christopher "Duck" Boden
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ariesdude
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Post by ariesdude »

chrisboden wrote:but trying to get things like an intake manifold, or brake calipers or whatnot are rather difficult it seems.
http://rockauto.com
http://autopartswarehouse.com
For really cheap stuff - http://www.stopshopanddrive.com

EDIT: Posted before realizing that you were looking for performance parts not replacement parts - these sites do have some good performance parts.
94 Mx-3 Precidia
1.8L 4Cyl DOHC newGen BP (used to be B6DE) ATX
http://www.mx-3.com/phpbb2/viewtopic.php?t=54032
http://www.cardomain.com/id/ariesdude
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