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DT125R FORUM

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  3. 3MB head.... Should I buy it?

3MB head.... Should I buy it?

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  • MightymanM Offline
    MightymanM Offline
    Mightyman
    wrote on last edited by
    #3

    You would need work done to that one... The pits in the centre are where loose metal has been smashed against it.

    TDR 125 - 2001

    dtlukeD CalumC 2 Replies Last reply
    1
    • MightymanM Mightyman

      You would need work done to that one... The pits in the centre are where loose metal has been smashed against it.

      dtlukeD Offline
      dtlukeD Offline
      dtluke
      wrote on last edited by
      #4

      @MIGHTYMAN hmmmm, sounds painful. J guess you can't sand it back too much as it'll take away the correct compression ratio?

      1 Reply Last reply
      0
      • MightymanM Offline
        MightymanM Offline
        Mightyman
        wrote on last edited by
        #5

        Not too sure on the specifics. But I imagine it would either be just about salvageable if the pits weren't too big, OR a specialist would have to actually build it up by adding ally back into it. Either way keep looking around and a cheaper option might pop up soon.

        TDR 125 - 2001

        dtlukeD 1 Reply Last reply
        1
        • MightymanM Mightyman

          Not too sure on the specifics. But I imagine it would either be just about salvageable if the pits weren't too big, OR a specialist would have to actually build it up by adding ally back into it. Either way keep looking around and a cheaper option might pop up soon.

          dtlukeD Offline
          dtlukeD Offline
          dtluke
          wrote on last edited by
          #6

          @MIGHTYMAN Thanks. I agree - was just being hopeful someone would tell me it'll be fine 😉

          1 Reply Last reply
          0
          • MightymanM Mightyman

            You would need work done to that one... The pits in the centre are where loose metal has been smashed against it.

            CalumC Offline
            CalumC Offline
            Calum
            wrote on last edited by
            #7

            @MIGHTYMAN said in 3MB head.... Should I buy it?:

            You would need work done to that one... The pits in the centre are where loose metal has been smashed against it.

            That OR engine detonated. Detonation is engine killer.

            Absolute waste of money buying that head it's fucked. You would have to have it worked, in which case you might as well get the 3BN head worked

            Always Originate, Never Pirate!

            1 Reply Last reply
            1
            • AndyYamA Offline
              AndyYamA Offline
              AndyYam
              wrote on last edited by
              #8

              wanna buy a 4dl head?

              DartyD dtlukeD 2 Replies Last reply
              0
              • AndyYamA AndyYam

                wanna buy a 4dl head?

                DartyD Offline
                DartyD Offline
                Darty
                wrote on last edited by
                #9

                @AndyYam Yes.

                Keep it real

                1 Reply Last reply
                1
                • AndyYamA AndyYam

                  wanna buy a 4dl head?

                  dtlukeD Offline
                  dtlukeD Offline
                  dtluke
                  wrote on last edited by
                  #10

                  @AndyYam is the 4DL as good as the 3MB? I've just put on my third head gasket now (Athena gasket) and still have a leak so I'm guessing my 3bn is warped anyway 😞

                  BurridgeB 1 Reply Last reply
                  0
                  • CalumC Offline
                    CalumC Offline
                    Calum
                    wrote on last edited by
                    #11

                    Look at this on eBay http://www.ebay.es/itm/302062068939

                    Always Originate, Never Pirate!

                    dtlukeD 1 Reply Last reply
                    2
                    • CalumC Calum

                      Look at this on eBay http://www.ebay.es/itm/302062068939

                      dtlukeD Offline
                      dtlukeD Offline
                      dtluke
                      wrote on last edited by dtluke
                      #12

                      @Calum thanks Calum, think I will go for that if you reckon its a good buy? I really can't find much info on the web about putting a 4dl head on a 3mb00 DTR barrel? I assume it will be an improvement over the 3bn - especially if minesl is warped!

                      NINJAN 1 Reply Last reply
                      0
                      • dtlukeD dtluke

                        @Calum thanks Calum, think I will go for that if you reckon its a good buy? I really can't find much info on the web about putting a 4dl head on a 3mb00 DTR barrel? I assume it will be an improvement over the 3bn - especially if minesl is warped!

                        NINJAN Offline
                        NINJAN Offline
                        NINJA
                        wrote on last edited by NINJA
                        #13

                        Great find @Calum

                        @dtluke Genuine Belgarda parts are the perverbial needles in hay stacks - nuff said!!! 😉

                        SEDUCED BY THE DARK SIDE!!!

                        1 Reply Last reply
                        1
                        • dtlukeD dtluke

                          @AndyYam is the 4DL as good as the 3MB? I've just put on my third head gasket now (Athena gasket) and still have a leak so I'm guessing my 3bn is warped anyway 😞

                          BurridgeB Offline
                          BurridgeB Offline
                          Burridge
                          wrote on last edited by
                          #14

                          @dtluke said in 3MB head.... Should I buy it?:

                          @AndyYam is the 4DL as good as the 3MB? I've just put on my third head gasket now (Athena gasket) and still have a leak so I'm guessing my 3bn is warped anyway 😞

                          Use a genuine Yamaha gasket when you put your new head on, a lot more money but it'll be worth it

                          1 Reply Last reply
                          1
                          • CalumC Offline
                            CalumC Offline
                            Calum
                            wrote on last edited by
                            #15

                            The 4dl head sits on a 3mb barrel. Graham Bell says the head is where the majority of the power is made. Get that right and you can't go far wrong.

                            I have done many heads before and haven't had any problems with Athena. There is a tutorial on qhat you should do to prep the head and barrel using a sheet of glass and various grades of wet and dry paper. Do what I say in that turorial and it will seal.

                            Always Originate, Never Pirate!

                            1 Reply Last reply
                            2
                            • dtlukeD Offline
                              dtlukeD Offline
                              dtluke
                              wrote on last edited by
                              #16

                              Cheers guys, I have bought that head. Looking forward to it arriving

                              1 Reply Last reply
                              1
                              • AndyYamA Offline
                                AndyYamA Offline
                                AndyYam
                                wrote on last edited by
                                #17

                                I think i have 1-2 4DL heads sitting around in the garage. I'm away for a week in Wales as of monday. If i have time before then ill get photos up in the for sale section. If not it'll be when i get back.

                                What did that one on ebay go for? as a guide for price.

                                1 Reply Last reply
                                0
                                • kennymurphy97K Offline
                                  kennymurphy97K Offline
                                  kennymurphy97
                                  wrote on last edited by
                                  #18

                                  Will a 1989 3MB head fit the 3MB barrel of my 2000 dt?

                                  1 Reply Last reply
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