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Thread: How to: Supra MA70 rear discs to Hilux

  1. #241
    Breaker OfThe Unbreakable Backyard Mechanic Herus's Avatar
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    Default Re: How to: Supra MA70 rear discs to Hilux

    email them to h e r u s @ internode.on.net with out the spaces, and ill get them up
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  2. #242
    Forum Sponsor Conversion King
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    Default Re: How to: Supra MA70 rear discs to Hilux

    SillyCarS,

    the one on the right is fooked, it wont have enough meat holding the handbrake shoes in place and could potentially lock up on you at speed IF it does snap off,

    is it worth spending the extra time to fix? hell yes.

    cheers
    linden
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  3. #243
    I wouldn't trust a... Conversion King Smokey228's Avatar
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    Default Re: How to: Supra MA70 rear discs to Hilux

    Quote Originally Posted by The Real Roadrunner
    SillyCarS,

    the one on the right is fooked, it wont have enough meat holding the handbrake shoes in place and could potentially lock up on you at speed IF it does snap off,

    is it worth spending the extra time to fix? hell yes.

    cheers
    linden
    Linden how do you fix it? I've got a weld across mine, where the meat was cut off... And where both sides of the meat where cut off, the welder, welded the meat back on one side, and then around the whole section and through the hole he drilled out... And then a stitch where the meat was removed...

    Is that going to be sweet??

    Cheers,
    jase
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  4. #244
    Junior Member Backyard Mechanic bigmat's Avatar
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    Default Re: How to: Supra MA70 rear discs to Hilux

    thankyou linden for correcting this because it happened to me to.

    cheers mat

  5. #245
    Breaker OfThe Unbreakable Backyard Mechanic Herus's Avatar
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    Default Re: How to: Supra MA70 rear discs to Hilux

    Ok...

    Pics as sent to me from Youngy..

    Backing Plate



    Detailed pic of the inside of the backing plate.



    Detailed pic of the outside of the backing plate



    Axle all together



    On Car



    This is from the Toyota Supra manual and shows where the springs need to go. There is some confusion on how that is done.

    The one with no colour is black. What it does not show is the yellow spring that goes between the shoes on the bottom - sits in behind the adjuster



    Thanks Youngy...

    I might have to pull my rear disks apart one day...

    Herus
    Last edited by Herus; 04-11-2009 at 05:04 PM.
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  6. #246
    Junior Member Backyard Mechanic bigmat's Avatar
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    Default Re: How to: Supra MA70 rear discs to Hilux

    MPW has some good pics in his thread for this aswell. you can see all the spring colours and where they go.

    cheers mat

  7. #247
    Toymods Club Member Backyard Mechanic auto351's Avatar
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    Default Re: How to: Supra MA70 rear discs to Hilux

    when fitting the calipers to a 1270 diff on an RA28 you need to modify the shock lower mount points to clear the calipers,
    Can anyone tell me if you have the 1310 diff is this shock mod still needed to clear the caliper?

  8. #248
    Forum Member 1st year Apprentice
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    Default Re: How to: Supra MA70 rear discs to Hilux

    nevermind
    Last edited by sprinter86; 04-01-2010 at 09:21 PM.

  9. #249
    Junior Member Grease Monkey ra28_miles's Avatar
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    Default Re: How to: Supra MA70 rear discs to Hilux

    hey has anybody had to shim the back of the pins that retain the the brake shoes, so they don't hit the axle studs?

  10. #250
    Junior Member Backyard Mechanic bigmat's Avatar
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    Default Re: How to: Supra MA70 rear discs to Hilux

    no i didnt. dosent sound good.

    cheers mat

  11. #251
    umop apisdn Chief Engine Builder twentyEight's Avatar
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    Default Re: How to: Supra MA70 rear discs to Hilux

    OK guys, so I'm using MA70 Backing Plates and MA70 Slotted Rotors and was planning to make a custom bracket from scratch and use an R32 Skyline Rear Caliper.

    After a bit of comparison between the R32 Skyline Rear Caliper and the MA70 Supra Rear Caliper, it seems that the R32 Skyline Rear Pads are about half the size.

    Now, a single piston caliper with twice as much pad surface area as the R32 caliper, would be heaps better than a twin piston caliper with half as much pad surface area as the MA70 caliper, yes?

    What about brake bias?

    Anyone hear running R32 Calipers and Discs (or equiv disc) on the front with the MA70 setup on the rear? How does the bias feel?
    ([][][]II--LT--II[][][])


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  12. #252
    Junior Member Automotive Encyclopaedia SillyCarS's Avatar
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    Default Re: How to: Supra MA70 rear discs to Hilux

    It all comes down to pressure man.

    Remebering force = pressure / area

    and the friction force is a function of that normal force.

    What u would need to do is equilibrate the two and leave pressure and friction properties constant. (choose 1 if u have to). So essentially the pad area of the single piston set up would have to be huge compare with the twin piston.

    I'm on my ph at the moment. Can explain better when I get to work tomorrow

  13. #253
    Junior Member Backyard Mechanic bigmat's Avatar
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    Default Re: How to: Supra MA70 rear discs to Hilux

    why the change or you just want to be different? ma70 works a treat and have had no probs yet.

    cheers mat

  14. #254
    umop apisdn Chief Engine Builder twentyEight's Avatar
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    Default Re: How to: Supra MA70 rear discs to Hilux

    Quote Originally Posted by bigmat View Post
    why the change or you just want to be different? ma70 works a treat and have had no probs yet.

    cheers mat
    It's more that I have the R32 calipers already, and they are twin piston (so I would have assumed better) and would'nt have to care about the brake bias side of things as they match the fronts great.
    ([][][]II--LT--II[][][])


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  15. #255
    Junior Member Automotive Encyclopaedia SillyCarS's Avatar
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    Default Re: How to: Supra MA70 rear discs to Hilux

    sorry i think i misunderstood where your coming from, your original statement reads that the single spot would be better

    if youve got 32 quads on the front and can make the rear twin pitons fit. go for it, you prob will need brake bias valve though just on weight distribution. though you would either way

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