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Thread: rear disk brake conversion 89 minivan

  1. #1
    Mitsu booster
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    rear disk brake conversion 89 minivan

    Well another project on the go.
    Started with the rear disk set up of an 1990 Daytona.



    I was hoping that the spindles would match but no even close. The one on the left is off the van.



    You can even see the difference in height. Same thing van on the left.





    After thinking about it and trying to figure out how to install, i got this plate machine that will allow the Daytona spindle to be attached and will bring it up the same height of the van's spindle. Also it'll drop the rear 3/4 inches.





    Needed to drill some more holes to get the caliper facing top back.















    Last edited by madme89; 09-17-2010 at 12:17 PM.

  2. #2
    Hybrid booster
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    Re: rear disk brake conversion 89 minivan

    Very nice plate! Nice job. Wouldnt want to make another set for my van???

  3. #3
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: rear disk brake conversion 89 minivan

    Wow, nice solution.

  4. #4
    Moderator Turbo Mopar Staff Vigo's Avatar
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    Re: rear disk brake conversion 89 minivan

    Gee, imagine that! I've been suggesting that someone produce and market those plates for a while now. Glad to see you got it done!!

    Where did you get the rotors?

    Great looking van as always.

    Dont push the red button.You hear me?

  5. #5
    Mitsu booster
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    Re: rear disk brake conversion 89 minivan

    Quote Originally Posted by Vigo View Post
    Gee, imagine that! I've been suggesting that someone produce and market those plates for a while now. Glad to see you got it done!!

    Where did you get the rotors?

    Great looking van as always.
    Thanks
    Yeah after searching found them on EBAY

    http://cgi.ebay.ca/ws/eBayISAPI.dll?...=STRK:MEWNX:IT

    Had to send the Daytona rotor back because they sent me the wrong ones. Should have them by Sept 13.

    Went to test the brakes today and was amazed on how they work. NO rear lock up. And she stops so fast that the transmission forgot to downshift.

  6. #6
    Moderator Turbo Mopar Staff Vigo's Avatar
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    Re: rear disk brake conversion 89 minivan

    And she stops so fast that the transmission forgot to downshift.
    Hehe yeh ive had that problem a lot in my auto cars. Usually the problem i have is that i think all the fluid sloshes to the front of the pan and the pump picks up an air bubble because the trans will be stuck in 'neutral' for a second or two after a hard stop.

    One of the cool things about the van is that they basically come with an adjustment for the rear brakes in the form of the load-sensing valve that is in front of the left-rear leaf spring. But, if you dont have to adjust it, all the better!

    Dont push the red button.You hear me?

  7. #7
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: rear disk brake conversion 89 minivan

    Nice job, your way is similiar to AJ's. Don't forget to adjust the rear level sensor, the rears need more brake pressure to work at their potential.

    AJ's way-

    http://www.turbo-mopar.com/forums/vb...e&articleid=75

    The way I did mine-

    http://www.turbo-mopar.com/forums/vb...e&articleid=72
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
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    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

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  8. #8
    Hybrid booster
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    Re: rear disk brake conversion 89 minivan

    Those plates are slicker than snot!

    Did you have a local machine shop make those for you?
    Will he do more?
    How much did they set you back, or maybe I should say how much would YOU need to have him do some more?

    CG

  9. #9
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    Re: rear disk brake conversion 89 minivan

    i'd also be interested in a set!

  10. #10
    Mitsu booster
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    Re: rear disk brake conversion 89 minivan

    Quote Originally Posted by chryguy View Post
    Those plates are slicker than snot!

    Did you have a local machine shop make those for you?
    Will he do more?
    How much did they set you back, or maybe I should say how much would YOU need to have him do some more?

    CG
    Yeah got them made at a machine shop. cost me $140

    Problem to making some more is I don't have the old spindles anymore and he would need to have the new ones too for the bolt pattern.

  11. #11
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    Re: rear disk brake conversion 89 minivan

    Quote Originally Posted by turbovanman View Post
    Nice job, your way is similiar to AJ's. Don't forget to adjust the rear level sensor, the rears need more brake pressure to work at their potential.

    AJ's way-

    http://www.turbo-mopar.com/forums/vb...e&articleid=75

    The way I did mine-

    http://www.turbo-mopar.com/forums/vb...e&articleid=72
    I've been driving with the new setup now for a week and I've noticed the front wheels are getting very hot. I was going to change the proportional valve with the one from the Daytona then I noticed your post and didn't know that you could adjust the rear valve. So how do i actually do that?

  12. #12
    Moderator Turbo Mopar Staff Vigo's Avatar
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    Re: rear disk brake conversion 89 minivan

    Look in front of the left rear leaf spring and you'll see it. There's a rod coming off the leaf spring or axle (cant remember) that pushes on that valve, and its a slotted thing so theres some adjustment.. When the suspension compresses, whichever way that would push the rod is the way you need to adjust it to get more rear brake.

    Dont push the red button.You hear me?

  13. #13
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: rear disk brake conversion 89 minivan

    Quote Originally Posted by madme89 View Post
    I've been driving with the new setup now for a week and I've noticed the front wheels are getting very hot. I was going to change the proportional valve with the one from the Daytona then I noticed your post and didn't know that you could adjust the rear valve. So how do i actually do that?
    What Vigo said, its an 8mm nut. I maxed mine out, I could do with a bit more but I am happy enough not to redo my brake lines to add another prop valve etc.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  14. #14
    Mitsu booster
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    Re: rear disk brake conversion 89 minivan

    Didn't see any 8mm nut. Did see lots of rust and i don't think that it's working anymore because of the rust. Also didn't see any slotted thing. I have the Daytona proportional valve and was planing to replace the van's with it. The only thing i will need to replace all the lines because i don't think I will be able to loosen the nuts due to rust. And the lines are rusted up so it will be worth it.

  15. #15
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: rear disk brake conversion 89 minivan

    Quote Originally Posted by madme89 View Post
    Didn't see any 8mm nut. Did see lots of rust and i don't think that it's working anymore because of the rust. Also didn't see any slotted thing. I have the Daytona proportional valve and was planing to replace the van's with it. The only thing i will need to replace all the lines because i don't think I will be able to loosen the nuts due to rust. And the lines are rusted up so it will be worth it.
    Look in front of the drivers spring, you'll see a torpedo type thing, this is connected to the leveling sensor. If you replace the prop valve, it won't do much because this sensor blocks or allows more fluid to the rear brakes.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  16. #16
    Mitsu booster
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    Re: rear disk brake conversion 89 minivan

    I checked it out and found out that the valve doesn't move because it's seized.

  17. #17
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: rear disk brake conversion 89 minivan

    Quote Originally Posted by madme89 View Post
    I checked it out and found out that the valve doesn't move because it's seized.
    So you have a couple choices, remove it and hope the prop valve works or install another one or install adjustable ones.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  18. #18
    Mitsu booster
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    Re: rear disk brake conversion 89 minivan

    I wanted to use the Dayton's prop valve but i just noticed that one of the bolt hole thread is bad. Completely stripped. Going to see the guy I got it from, I know he has another Daytona but don't remember if it had rear disk. Then I can get rid of the rear prop valve on the van and will have new lines in.

  19. #19
    turbo addict Turbo Mopar Contributor Dave's Avatar
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    Re: rear disk brake conversion 89 minivan

    Great job! As mentioned, those adapters are sweet. I like that you also put in the thought of lowering the rear with the drop spindle adapters. WTG!

    How much is the front lowered by? What method did you use up front?

  20. #20
    Mitsu booster
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    Re: rear disk brake conversion 89 minivan

    Quote Originally Posted by Dave View Post
    Great job! As mentioned, those adapters are sweet. I like that you also put in the thought of lowering the rear with the drop spindle adapters. WTG!

    How much is the front lowered by? What method did you use up front?
    I lowered using the DAytona coils and struts.
    Don't remember how much it lowered but you can see in this pics the difference.


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