MX5 SP Turbo rear brakes

BigMal · 13-09-2004, 11:52 PM

Hey all,
Anybody got a contact with some MX5 people that can explain whats
involved in upgrading from standard MX5 rears to the SP Turbo rears.
Reason I ask is the MX5 uses the same rear rotor as a BA 4cyl and
the SP rears are heaps bigger almost the same size as the stock fronts.

Ta

Mal

kemicalx · 17-09-2004, 10:21 AM

Weren't there only 150 odd MX5 Sp's made? I can't imagine too many people would be selling their rear brakes :P

BigMal · 17-09-2004, 10:49 AM

You can buy DBA rotors and then get a bracket made up. I saw one of
the MX5's at the dyno meet have them but didn't catch up with the guy
to ask how it was done.

pr1mo · 17-09-2004, 10:56 AM

sorry for my ignorance but would you need to replace calipers etc?

cheers mike

twilightprotege · 17-09-2004, 11:23 AM

bigger brake pads

BigMal · 17-09-2004, 12:32 PM

I dont know the answer to that the MX5 I saw didn't have changed calipers. I also
dont know if you can get bigger pads will check the bendix catalogue. You are
going from a 250mm rotor to a 276mm rotor so that would add maybe an inch
or two of contact area per revolution of the wheel and will also fill up the gap
under my 18"s a lot better.

Looking at Hoppers Stoppers website again they recomend a 1inch master for
the twin piston calipers so will need to look into that a bit further.

Cosmo Dude · 17-09-2004, 05:22 PM

If the SP was so limited then the calipers are probably from the parts bin and common to another Mazda.
Too the books to check brake pad part numbers in the hope you find a simple solution. If not then their will be a different solution.

BigMal · 18-09-2004, 08:55 AM

The rotor is only 10mm thick against the normal 9mm so dont believe the
caliper changes only a bracket for the increased rotor size have been searching
the MX5 forums etc thought this would have been a fairly commonplace mod
the same as adding HSV stuff is to commodores but finding nothing.

andrewgrazier · 22-09-2004, 12:58 PM

i dont really see the point. like wouldnt it cost an absoloute crap load to re do the rear brakes? what about gettin high performance brake pads on some drilled or slotted discs?
we have a standard mx 5 2001 model n its like got really great stopping power

BigMal · 23-09-2004, 10:12 AM

The point is I dont think it should cost the earth. I plan to buy some slotted
rotors after I do my front brake upgrade. So instead of buying standard rotors
buy the SP ones and if I can then pick up the bracket that should be all thats
required. I of course want to confirm this first before buying anything am hoping
that this mod would only be about $200 more than just upgrading to standard
sized slotted rotors. Will go and see Mazda and see if I can see the manual.

13-09-2004, 11:52 PM	#1
BigMal 1ST BA TURBO MEMBER Join Date: Mar 2002 Location: Sydney Car: BA Astina Turbo Posts: 4,195 View Photos By: BigMal	MX5 SP Turbo rear brakes Hey all, Anybody got a contact with some MX5 people that can explain whats involved in upgrading from standard MX5 rears to the SP Turbo rears. Reason I ask is the MX5 uses the same rear rotor as a BA 4cyl and the SP rears are heaps bigger almost the same size as the stock fronts. Ta Mal __________________ If you want wind in your hair add a Hairdryer !!!

17-09-2004, 10:21 AM	#2
kemicalx AstinaGT Regular Join Date: Sep 2003 Location: www.geelong.vic.au Car: Toyota MZ21, BG Astina Posts: 275	Weren't there only 150 odd MX5 Sp's made? I can't imagine too many people would be selling their rear brakes :P __________________ Car: BG Astina Head Unit: JVC KD-SH77 Front Amp: Blaupunkt GTA4100 Sub Amp: Jaycar 4x100 Front: Boston Rally Splits Sub: Diamond Audio M3151.8 15" 138.9dB @ 59Hz on Termlab Trigun Motorsport

17-09-2004, 10:49 AM	#3
BigMal 1ST BA TURBO MEMBER Join Date: Mar 2002 Location: Sydney Car: BA Astina Turbo Posts: 4,195 View Photos By: BigMal	You can buy DBA rotors and then get a bracket made up. I saw one of the MX5's at the dyno meet have them but didn't catch up with the guy to ask how it was done. __________________ If you want wind in your hair add a Hairdryer !!!

17-09-2004, 12:32 PM	#6
BigMal 1ST BA TURBO MEMBER Join Date: Mar 2002 Location: Sydney Car: BA Astina Turbo Posts: 4,195 View Photos By: BigMal	I dont know the answer to that the MX5 I saw didn't have changed calipers. I also dont know if you can get bigger pads will check the bendix catalogue. You are going from a 250mm rotor to a 276mm rotor so that would add maybe an inch or two of contact area per revolution of the wheel and will also fill up the gap under my 18"s a lot better. Looking at Hoppers Stoppers website again they recomend a 1inch master for the twin piston calipers so will need to look into that a bit further. __________________ If you want wind in your hair add a Hairdryer !!!

17-09-2004, 05:22 PM	#7
Cosmo Dude コスモ Join Date: Dec 2002 Location: Location: Vic Car: Mazda '95 Astina I4, '86 B2K and '10 3 MZR-CD Posts: 7,888 View Photos By: Cosmo Dude	If the SP was so limited then the calipers are probably from the parts bin and common to another Mazda. Too the books to check brake pad part numbers in the hope you find a simple solution. If not then their will be a different solution. __________________ My 'stina Hatch

17-09-2004, 10:56 AM	#4
pr1mo I MUST STOP MAKING STUPID POSTS! Yet I keep on making them. And I wonder why I get banned? Join Date: Mar 2002 Location: DansVille Car: auto Posts: 4,326	sorry for my ignorance but would you need to replace calipers etc? cheers mike

17-09-2004, 11:23 AM	#5
twilightprotege Driving a faster car now! Join Date: Oct 2003 Location: Work, always at bloody work... Car: Lotus ....... . Posts: 5,217 View Photos By: twilightprotege	bigger brake pads

18-09-2004, 08:55 AM	#8
BigMal 1ST BA TURBO MEMBER Join Date: Mar 2002 Location: Sydney Car: BA Astina Turbo Posts: 4,195 View Photos By: BigMal	The rotor is only 10mm thick against the normal 9mm so dont believe the caliper changes only a bracket for the increased rotor size have been searching the MX5 forums etc thought this would have been a fairly commonplace mod the same as adding HSV stuff is to commodores but finding nothing. __________________ If you want wind in your hair add a Hairdryer !!!

22-09-2004, 12:58 PM	#9
andrewgrazier Senior Member Join Date: Feb 2003 Location: newcastle Posts: 586 View Photos By: andrewgrazier	i dont really see the point. like wouldnt it cost an absoloute crap load to re do the rear brakes? what about gettin high performance brake pads on some drilled or slotted discs? we have a standard mx 5 2001 model n its like got really great stopping power

23-09-2004, 10:12 AM	#10
BigMal 1ST BA TURBO MEMBER Join Date: Mar 2002 Location: Sydney Car: BA Astina Turbo Posts: 4,195 View Photos By: BigMal	The point is I dont think it should cost the earth. I plan to buy some slotted rotors after I do my front brake upgrade. So instead of buying standard rotors buy the SP ones and if I can then pick up the bracket that should be all thats required. I of course want to confirm this first before buying anything am hoping that this mod would only be about $200 more than just upgrading to standard sized slotted rotors. Will go and see Mazda and see if I can see the manual. __________________ If you want wind in your hair add a Hairdryer !!!

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