Announcement Announcement Module
Collapse
No announcement yet.
VR4 / EVO Dual Pot DIY!!! Page Title Module
Move Remove Collapse
X
Conversation Detail Module
Collapse
  • Filter
  • Time
  • Show
Clear All
new posts

  • VR4 / EVO Dual Pot DIY!!!

    Ok guys there isnt a good thread containing a decent write up on this upgrade so follow me for the next few weeks on how to do it!

    Why upgrade?

    Well the DP's offer a larger brake pad surface this is the main different

    Cost!

    Go have a look at some decent pads for the colt front only

    Greenstuff are around $200
    Endless $300 +
    Ralliart $400 +

    Rotors are exxy too, hard to find and get

    now have a look below at how much i have paid for the conversion and how much some decent pads are worth, you get a much larger range of aftermarket pads

    you get a better selection of rotors too RDA DBA both have rotors that will fit
    DP = Dual Pots

    Now The brakes

    VR4 / Evo 1-3 dual pistons, has been said before its all bolt on.

    What you need is

    http://i169.photobucket.com/albums/u...s/P1010641.jpg

    Brakes
    Brake mount bolts from donor car!
    Clips for the pads!
    Brake Rotors
    Brake pads


    What I paid

    I got a mate from another forum to supply me with Brakes inc mount bolts and the pad clips all used.
    New RDA slotted rotors for the Evo 3

    This cost me $500

    I then got some elig street track pads, I have a bunch of mates who said nothing but good this on the pads, they are cheap and very good performing, a google on them shows the make them for evo and wrx's and i couldnt find any bad forum posts on them, unlike what you read with greenstuff pads!

    This cost $105.60
    I went the 2021's
    http://www.gtpumps.com.au/ELIG_brake.html

    The Brakes

    They are a dual piston set up, now the VR4's use a smaller piston than the evo ones and thus use a different rebuild kit.

    I will measure the pistons when they are out of the assy.

    Here is a few pics
    http://i169.photobucket.com/albums/u...s/P1010651.jpg
    http://i169.photobucket.com/albums/u...s/P1010652.jpg
    http://i169.photobucket.com/albums/u...s/P1010653.jpg
    http://i169.photobucket.com/albums/u...s/P1010654.jpg
    http://i169.photobucket.com/albums/u...s/P1010655.jpg
    http://i169.photobucket.com/albums/u...s/P1010656.jpg

    Now the mount used on the colts rotor is the same diameter but uses a different pitch thread and no washers!

    http://i169.photobucket.com/albums/u...s/P1010650.jpg

    The DP uses a longer bolt and a large spring washer, always use locktite too, blue was used on the stock ones when i took them off, they were very tight, i needed a 2ft long braker bar ( i used my 3/4 driver braker bar and the leg of my fluro lights for the extention to get the leverage.)

    Now another thing to note is our car uses a banjo bolt for the brake line, the twin pots are also on magnas and pajeros, just look thru the bendix catalogue and see how many different mitsu's use the same P/N pad!

    DB1223 is the part number for the pads
    http://www.bendix.com.au/DocumentLis...ation+Data.pdf


    Now the Rotors

    You get the Evo 3 rotors

    Its all bolt on to the colt the difference in the rotors are

    The stock colt rotor is about 1 to 2 mm wider!
    The braking area is in fact the same size, the extra size is the lip on the edge of the colts as seen here.
    http://i169.photobucket.com/albums/u...s/P1010644.jpg

    The colts disk is this thicker
    http://i169.photobucket.com/albums/u...s/P1010643.jpg


    Evo disk thickness = 24.1mm
    Stock disk thickness = 25.8mm

    I would not use the evo rotor as a replacement to the colts ones on the stock brakes, i dont think it is quite wide enough, i did not check, and the minimum thisness may be to thin too.

    More pics fitted
    http://i169.photobucket.com/albums/u...s/P1010645.jpg
    http://i169.photobucket.com/albums/u...s/P1010647.jpg
    http://i169.photobucket.com/albums/u...s/P1010649.jpg
    http://i169.photobucket.com/albums/u...s/P1010661.jpg

    Evo min = 22.4 Stamped on disk
    Stock min = 23.5

    Now another thing that gets overlooked is the size of the hole for the hub, this is also important, but good news they were both 69mm!
    http://i169.photobucket.com/albums/u...s/P1010648.jpg

    I bought RDA rotors from the person who supplied my calapers
    here is a site with P/N info and a cost for them
    http://www.meek.com.au/index.php?act=viewCat&catId=46

    Now the Pads

    As you can see the stock pad is taller

    Stock = 52mm
    Evo = 45mm

    But the evo ones are alot longer

    Stock = 108mm
    Evo = 133mm

    Pics of the pads!
    http://i169.photobucket.com/albums/u...s/P1010657.jpg
    http://i169.photobucket.com/albums/u...s/P1010658.jpg
    http://i169.photobucket.com/albums/u...s/P1010659.jpg
    http://i169.photobucket.com/albums/u...s/P1010660.jpg
    http://i169.photobucket.com/albums/u...s/P1010661.jpg


    Now didnt get any pics but I am rebuilding them, there isnt much to them

    there is 2 sliding pins

    1 seal for the piston and 1 on the boot

    http://i169.photobucket.com/albums/u...1918-59-20.jpg

    I pulled the 2 pins out and cleaned them up with a strong mix of degreaser

    tomorrow ill pop the pistons out with a compressor and clean them up good

    mine werent too bad but other may want them sandblasted.

    Well this is as far as i got, more will be added to this initial post.

    Feel free to make this a discussion thread on the conversion and ill answer any questions!


    Remember i used proper tools and didnt loose any meat on my fingers with leather gloves
    http://i169.photobucket.com/albums/u...P1010662-1.jpg

  • #2
    Looks like fun... I'm looking forward to seeing how they go

    Comment


    • #3
      Macca, i was going to say i am now ready to bare our lovechild after reading this, but you didn't use any zip ties and for that, my offer is off the table

      Nah seriously good work dude thumbs up.

      Comment


      • #4
        I'm def going to look into this myself

        Awesome write up macca

        *thumbs up*

        and sticky please!

        Comment


        • #5
          so far so good Maccas
          good to see my supplied parts are working out

          Comment


          • #6
            Started pulling them down and cleaning them, struggled to get the pistons out, only got one out :O LOL so i just cleaned the rest up of them and handed them to a shop to get blasted and finihsed off and a coat of paint i supplied for can for. only costing like $60 each to rebuild.

            The place i went to also makes braded brake lines at approx $70 each for a std length, might haveto get some later on too lol

            Comment


            • #7
              60 bucks each dam i paid $100... oh well still waiting to see if you feel a good gain in braking... also i was doing braking tests with a G-senor and was getting sparks from my brakes... not sure why ay?

              Comment


              • #8
                yeh it was alot cheaper cause i supplied the rebuild kit and half strted the job.

                Sparks? what pads you running? sounds like a pad issue

                im keen to see how they go with the slotted rotors and the elig pads

                its all booked in to get its 60,000 plus the brakes put on, on the 1st

                also getting dynoed this weekend

                Comment


                • #9
                  Originally posted by Macca View Post
                  Started pulling them down and cleaning them, struggled to get the pistons out, only got one out :O LOL so i just cleaned the rest up of them and handed them to a shop to get blasted and finihsed off and a coat of paint i supplied for can for. only costing like $60 each to rebuild.

                  The place i went to also makes braded brake lines at approx $70 each for a std length, might haveto get some later on too lol
                  the way i do it is you have to hold both pistons off and work them out equally.
                  but if you do just pop one out and the other one is still on then you can seal up the opening after removing one piston and eventually the other one will come out.

                  Comment


                  • #10
                    im using QFM pads my mate has the same ones not sure if he has sparks though... also getting a squeeky noise ill check it up one day hopefully your install has no noises, may try running new pads...

                    Comment


                    • #11
                      track / street track squeel, you cant help it its just the type of material they use!

                      no idea on the sparks thou

                      mabey pull them off too see if they are debonding

                      Comment


                      • #12
                        QFM pads are bastards for makin squealing noises. Old flatmate ran some in an RX7 and I could head him pulling up a lights streets away.

                        Comment


                        • #13
                          Originally posted by bridge12a View Post
                          QFM pads are bastards for makin squealing noises. Old flatmate ran some in an RX7 and I could head him pulling up a lights streets away.
                          mines not so much braking but just driving they squeak... i duno ill look into it when i have more free time...

                          Comment


                          • #14
                            Hot updates.

                            Picked the calapers up from the brake shop cost $160 to rebuild and mm alot nicer looking they did alot better job than i could have done, was worth getting them to do it.

                            They bead blasted them, cleaned and painted with supplied paint and rebuild with supplied kit.

                            I painted the rotors and the shims and stuck the pads in all ready to go on wedensday when the car goes for the 60k service, should only take the workshop an hour to install inc bleeding them.

                            PICS!

                            http://i169.photobucket.com/albums/u...s/P1010668.jpg

                            http://i169.photobucket.com/albums/u...s/P1010669.jpg

                            http://i169.photobucket.com/albums/u...s/P1010664.jpg

                            http://i169.photobucket.com/albums/u...s/P1010667.jpg

                            http://i169.photobucket.com/albums/u...s/P1010665.jpg

                            Looking awesome now, they will look sweet behind my wheels!

                            Comment


                            • #15
                              So how many of these sets are you making up? Look forward to an on-road braking review.

                              Comment

                              Working...
                              X