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DT125R FORUM

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  4. Bigger Radiator?

Bigger Radiator?

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  • HOTSHOT IIIH Offline
    HOTSHOT IIIH Offline
    HOTSHOT III
    wrote on last edited by
    #1

    Looking at fitting an Athena 170 kit and/or some tuning work and IMO the stock radiator could be a limitation as the DT200R had twin rads (my temp guage fairly soon goes above 1/2 during hard off-road riding but is fine on the road). Someone in China produces one for the DTR but it's over £100.
    Did some digging on the web and this company in the UK (MXPUK) makes rads for lots of late model MX bikes. Most of their single rads are about £40-£75. I asked the question on their eBay shop and received an encouraging response 😎
    https://www.ebay.co.uk/str/motocrosspartsuk
    Who would be up for one of these if they went ahead and produced a batch for the DTR? Decent stock radiators are getting harder to find so even for the stock bike a brand new, better-than-stock radiator would be a good option. Comment below!

    CalumC Stevie WonderS M 3 Replies Last reply
    1
    • HOTSHOT IIIH HOTSHOT III

      Looking at fitting an Athena 170 kit and/or some tuning work and IMO the stock radiator could be a limitation as the DT200R had twin rads (my temp guage fairly soon goes above 1/2 during hard off-road riding but is fine on the road). Someone in China produces one for the DTR but it's over £100.
      Did some digging on the web and this company in the UK (MXPUK) makes rads for lots of late model MX bikes. Most of their single rads are about £40-£75. I asked the question on their eBay shop and received an encouraging response 😎
      https://www.ebay.co.uk/str/motocrosspartsuk
      Who would be up for one of these if they went ahead and produced a batch for the DTR? Decent stock radiators are getting harder to find so even for the stock bike a brand new, better-than-stock radiator would be a good option. Comment below!

      CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #2

      @HOTSHOT-III I'm running DT230 lanza radiators with thermostat removed to good success. Temperature rises to 70 degress centrigrade when on load up a steep hill, otherwise sits at 60 degrees.

      With thermostat I was hitting over 100 - 110 degrees.

      Always Originate, Never Pirate!

      HOTSHOT IIIH 1 Reply Last reply
      1
      • CalumC Calum

        @HOTSHOT-III I'm running DT230 lanza radiators with thermostat removed to good success. Temperature rises to 70 degress centrigrade when on load up a steep hill, otherwise sits at 60 degrees.

        With thermostat I was hitting over 100 - 110 degrees.

        HOTSHOT IIIH Offline
        HOTSHOT IIIH Offline
        HOTSHOT III
        wrote on last edited by
        #3

        @Calum Lanza or DT200R/WR200 rads are a possibility as long as I can find somewhere to put 2T oil.

        Perhaps a later DTRe oil tank and coolant expansion tank?

        CalumC MadGyverM 2 Replies Last reply
        0
        • HOTSHOT IIIH HOTSHOT III

          @Calum Lanza or DT200R/WR200 rads are a possibility as long as I can find somewhere to put 2T oil.

          Perhaps a later DTRe oil tank and coolant expansion tank?

          CalumC Offline
          CalumC Offline
          Calum
          wrote on last edited by
          #4

          @HOTSHOT-III premix 🤣 🤣

          Yes, I had to fabricate up some brackets for relays and what not.

          Always Originate, Never Pirate!

          1 Reply Last reply
          0
          • HOTSHOT IIIH HOTSHOT III

            Looking at fitting an Athena 170 kit and/or some tuning work and IMO the stock radiator could be a limitation as the DT200R had twin rads (my temp guage fairly soon goes above 1/2 during hard off-road riding but is fine on the road). Someone in China produces one for the DTR but it's over £100.
            Did some digging on the web and this company in the UK (MXPUK) makes rads for lots of late model MX bikes. Most of their single rads are about £40-£75. I asked the question on their eBay shop and received an encouraging response 😎
            https://www.ebay.co.uk/str/motocrosspartsuk
            Who would be up for one of these if they went ahead and produced a batch for the DTR? Decent stock radiators are getting harder to find so even for the stock bike a brand new, better-than-stock radiator would be a good option. Comment below!

            Stevie WonderS Offline
            Stevie WonderS Offline
            Stevie Wonder
            wrote on last edited by
            #5

            @HOTSHOT-III

            Decent quality parts in general are getting rarer and more so even costlier. I’d be only to happy to see and support a British company produce aftermarket parts especially if they provide the option to get twin rads so I don’t have to pay £££’s for 2nd hand bits from Greece etc

            1 Reply Last reply
            0
            • HOTSHOT IIIH HOTSHOT III

              Looking at fitting an Athena 170 kit and/or some tuning work and IMO the stock radiator could be a limitation as the DT200R had twin rads (my temp guage fairly soon goes above 1/2 during hard off-road riding but is fine on the road). Someone in China produces one for the DTR but it's over £100.
              Did some digging on the web and this company in the UK (MXPUK) makes rads for lots of late model MX bikes. Most of their single rads are about £40-£75. I asked the question on their eBay shop and received an encouraging response 😎
              https://www.ebay.co.uk/str/motocrosspartsuk
              Who would be up for one of these if they went ahead and produced a batch for the DTR? Decent stock radiators are getting harder to find so even for the stock bike a brand new, better-than-stock radiator would be a good option. Comment below!

              M Offline
              M Offline
              mhbikesnbits
              wrote on last edited by
              #6

              @HOTSHOT-III keep me updated if you don’t mind in response from the shop, I’m going to be running twin rads from the 200r / or either buy a set from another bike in aluminium and modify the brackets to suit the new radiator how ever if this company can produce these radiators then I’d be very Intrested in getting a original set remade

              1 Reply Last reply
              0
              • HOTSHOT IIIH HOTSHOT III

                @Calum Lanza or DT200R/WR200 rads are a possibility as long as I can find somewhere to put 2T oil.

                Perhaps a later DTRe oil tank and coolant expansion tank?

                MadGyverM Offline
                MadGyverM Offline
                MadGyver
                wrote on last edited by MadGyver
                #7

                @HOTSHOT-III said in Bigger Radiator?:

                @Calum Lanza or DT200R/WR200 rads are a possibility as long as I can find somewhere to put 2T oil.

                Perhaps a later DTRe oil tank and coolant expansion tank?

                I've thought everything you say,the easier and low cost way,is DT200R right rad and going premix,left rad you keep yours,you will just have caps on both sides. The oil tank from the later DT's is good option but you need to change the side panels If you have an early DT. For the DT200R right rad you need only to remove a small bracket from the oil tank frame and fits like a glove.
                Temp's running here in Greece is 65-70c in cruising and 95-100c in mountain trails and very hard use on low speeds, with thermostat in place.

                I need my tools and a pile of junk.....

                CalumC Stevie WonderS 2 Replies Last reply
                1
                • MadGyverM MadGyver

                  @HOTSHOT-III said in Bigger Radiator?:

                  @Calum Lanza or DT200R/WR200 rads are a possibility as long as I can find somewhere to put 2T oil.

                  Perhaps a later DTRe oil tank and coolant expansion tank?

                  I've thought everything you say,the easier and low cost way,is DT200R right rad and going premix,left rad you keep yours,you will just have caps on both sides. The oil tank from the later DT's is good option but you need to change the side panels If you have an early DT. For the DT200R right rad you need only to remove a small bracket from the oil tank frame and fits like a glove.
                  Temp's running here in Greece is 65-70c in cruising and 95-100c in mountain trails and very hard use on low speeds, with thermostat in place.

                  CalumC Offline
                  CalumC Offline
                  Calum
                  wrote on last edited by
                  #8

                  @MadGyver something isn't right with my bike then as with the rad I was getting that temp in the UK during the winter 🤣 it wasn't a faulty thermostat either as i tested that and it works a charm.

                  Regardless, it's running like a dream now anyhow.

                  Always Originate, Never Pirate!

                  MadGyverM 1 Reply Last reply
                  0
                  • MadGyverM MadGyver

                    @HOTSHOT-III said in Bigger Radiator?:

                    @Calum Lanza or DT200R/WR200 rads are a possibility as long as I can find somewhere to put 2T oil.

                    Perhaps a later DTRe oil tank and coolant expansion tank?

                    I've thought everything you say,the easier and low cost way,is DT200R right rad and going premix,left rad you keep yours,you will just have caps on both sides. The oil tank from the later DT's is good option but you need to change the side panels If you have an early DT. For the DT200R right rad you need only to remove a small bracket from the oil tank frame and fits like a glove.
                    Temp's running here in Greece is 65-70c in cruising and 95-100c in mountain trails and very hard use on low speeds, with thermostat in place.

                    Stevie WonderS Offline
                    Stevie WonderS Offline
                    Stevie Wonder
                    wrote on last edited by Stevie Wonder
                    #9

                    @MadGyver useful information, I was gonna purchase full 200r rad setup, brackets, rads, pipes etc the lot so that’s just saved me a pretty penny

                    What’s that reading in regards to position on the temp gauge?

                    1 Reply Last reply
                    0
                    • CalumC Calum

                      @MadGyver something isn't right with my bike then as with the rad I was getting that temp in the UK during the winter 🤣 it wasn't a faulty thermostat either as i tested that and it works a charm.

                      Regardless, it's running like a dream now anyhow.

                      MadGyverM Offline
                      MadGyverM Offline
                      MadGyver
                      wrote on last edited by
                      #10

                      @Calum
                      At what temp your thermostat start's to open?My at 60 and is full open at 80,I don't remember if its a DT125 or from a TZR.
                      Also the head gasket of the kit is has passages for a single rad,I made a custom one that fits the dual rads.

                      @Stevie-Wonder
                      The bottom metal pipe that connects the 2 rads can be modded to become a DT200R.Generic rad hoses from cars can be used.
                      My temp is from a Trailtech VapoX and the sensor is modded and installed in the place that goes the factory one.

                      I need my tools and a pile of junk.....

                      CalumC 1 Reply Last reply
                      0
                      • MadGyverM MadGyver

                        @Calum
                        At what temp your thermostat start's to open?My at 60 and is full open at 80,I don't remember if its a DT125 or from a TZR.
                        Also the head gasket of the kit is has passages for a single rad,I made a custom one that fits the dual rads.

                        @Stevie-Wonder
                        The bottom metal pipe that connects the 2 rads can be modded to become a DT200R.Generic rad hoses from cars can be used.
                        My temp is from a Trailtech VapoX and the sensor is modded and installed in the place that goes the factory one.

                        CalumC Offline
                        CalumC Offline
                        Calum
                        wrote on last edited by
                        #11

                        @MadGyver sounds like a very similar setup to me.

                        As I recall, the thermostat opened at 80,but I would have to double check.

                        Always Originate, Never Pirate!

                        1 Reply Last reply
                        0
                        • HOTSHOT IIIH Offline
                          HOTSHOT IIIH Offline
                          HOTSHOT III
                          wrote on last edited by HOTSHOT III
                          #12

                          Thanks for all the responses guys, I've been corresponding more with the company as you can see! They've proposed doing a CAD drawing of the original rad and working from there, they make radiators for lots of late model MX bikes so they seem to know what they're doing.

                          As you can see my favoured direction is a deeper-than-stock single rad to retain the autolube tank on the 125 (this would also allow retention of the tubular steel radiator guard which most MX bikes don't have) but if they can do this there's no reason why they can't make some DT200R/Lanza sets as well for those who want to go the twin rad route.

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                          1 Reply Last reply
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                          • B Offline
                            B Offline
                            BEng1968
                            wrote on last edited by
                            #13

                            Did you get anywhere with the bigger single radiator?

                            1 Reply Last reply
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