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  1. Motherfnmonsta

    Motherfnmonsta Greenie Member

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    Hey guys I have a 2012 Ms3 with a full uily motor mailing around 600 who and I have been tracking the car a lot more and noticed heat is starting to become my enemy as I am out on the track for at least 3 20 min. Sessions. So I decided to upgrade the radiator as a starting point on battling this and decided to replace the stock radiator with a koyo radiator. As you can tell in the pictures it is a all aluminum radiator and is quite thicker than the stock radiator. After installing and having a few days of driving I have noticed my coolant temps are a lot cooler. Before hand coolant temps during this summer would be around 190-200 after installing this radiator I have noticed my coolant temps are now between 175-180 during high way and speeds and city driving. So if you are in need of a replacement radiator I would strongly suggest this as a replacement.[​IMG][​IMG]

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    Motherfnmonsta, via a mobile device, Jul 9, 2019
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  2. Sho

    Sho Silver Member

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    Love my koyo rad on my gen 1. Never see temps hit 200 unless I've been sitting in traffic for a while
     
    Sho, via a mobile device, Jul 9, 2019
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  3. Easter Bunny

    Easter Bunny Professional Engineer Motorhead Platinum Member

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    cant really tell in the pictures but do you have all of the ducting installed on the front side of the radiator? you need to make sure that all of the air coming through the front of the car is forced through the radiator
     
  4. krimsonviper

    krimsonviper Forward! Greenie Member

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    I was wondering the same thing. Does anyone offer any thinner fans for us? I know I looked at Mishimoto and nothing from them
     
    krimsonviper, via an iPhone, Jul 9, 2019
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  5. Motherfnmonsta

    Motherfnmonsta Greenie Member

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    All the ducts fit with no interference with my treadstone fmic. If I get the car in the shop I'll take a picture

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    Motherfnmonsta, via a mobile device, Jul 9, 2019
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  6. Mauro_Penguin

    Mauro_Penguin Punk in Drublic. #BlackLivesMatter Motorhead Platinum Member

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    It is perfect OEM fitment, right down to the fan brackets. They actually make the fans fit a little tighter, so it seals against the radiator better. No fan interference at all.

    The core is a little thicker and I believe the end tanks were a little thicker too. It retains all the OEM baffling, but with time the upper baffling will fall out. Its sponge like with an adhesive strip. I cut up a pool noodle and used it to seal the edges of the radiator better.

    I can confirm that coolant temps while cruising are at least 10* colder, cant remember the exact delta now. My fans come on a heck of a lot less while daily driving in traffic.

    Here are the only 2 pics I found from my install last year.


    20180716_142116.jpg
    20180716_142149.jpg
     
    Mauro_Penguin, via a mobile device, Jul 9, 2019
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  7. Easter Bunny

    Easter Bunny Professional Engineer Motorhead Platinum Member

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    I knew it was a direct swap. But wanted to make sure that the fmic install didn’t remove the ducting
     
    Easter Bunny, via an iPhone, Jul 9, 2019
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  8. Motherfnmonsta

    Motherfnmonsta Greenie Member

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    Everything fits perfectly as if oe.

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    Motherfnmonsta, via a mobile device, Jul 9, 2019
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  9. Motherfnmonsta

    Motherfnmonsta Greenie Member

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    I thought I would post a little update. About 2 weeks ago I decided to take the car to vir to scca track night. The car did awesome my coolant temps stayed around 195 for the entire 20-minute session. So in my opinion the radiator did an excellent job and definitely better compare to a oe radiator.

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    Motherfnmonsta, via a mobile device, Aug 11, 2019
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  10. jsilva

    jsilva Silver Member

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    I had been considering this radiator. I don’t do track driving at this point, but I don’t like seeing the temperature go up as high as it sometimes does with normal city driving and heat soak happens a lot more quickly than I’d like.

    So thanks for this thread!
     
  11. CheAlde

    CheAlde Greenie Member

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    Motherfnmonsta
    Can you give the part number for the Koyorad that you installed? Thanks for the great details, and on the improvements of upgrades to your Mazdaspeed!
     
  12. L337TurboZ

    L337TurboZ World Class Truck Squatter Greenie Member

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    If you click his name you can see he was last here in November 2021. Maybe he'll turn up again.
     
    L337TurboZ, via a Motorola device, Mar 27, 2022
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  13. CheAlde

    CheAlde Greenie Member

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    I can relate to that. Last I was on here was YEARSssssss ago too! :crybaby2:
     
  14. Awafrican

    Awafrican Moderator Gold Member

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    Fair question, however since OP hasn't been around a while a quick Google search for the koyo rads for the speeds (edge Autosport has them listed)
    Gen1 speed PN KH061816
    gen 2 PN KH062306
     
    Awafrican, via a mobile device, Mar 27, 2022
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