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Question(s) regarding Yamaha RX100 engine overhaul

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  • #46
    No guise! I wanted to know about the extent of beating that the cylinder has taken. I know it can rebored because it has never been rebored since I bought it anew 7 years ago hahaha sorry for confusing you guys I was in a hurry when I posted the pics
    RIP ਕਾਕਾ ਭੈਣੀਆਂਵਾਲਾ (Santokh Singh Rataurh)

    Comment

    • #47
      Ok but you need not worry about that it can take even more if you take proper care like checking regularly if the oil pump is working,do add 2t oil in the petrol sometimes,RX cylinder kits are tough/strong thats the way its made even a 15year old cylinder if you bore it port it can easily take todays any 150-180cc class smile and keep riding safely

      Comment

      • #48
        Originally posted by amitmalve
        Plz dont go 4 engine rebore!Instead go 4 complete new block-piston kit.Though this vod cost moreits definately worth.M telling this 4m my personal experience.
        Whoa!!!! Are you serious buddy?
        Can I find a new cylinder assy from Y.A.S.S?
        Skill is what keeps you on a Motorcycle
        Awareness + Skill is what keeps you out of harm's way
        ATGATT + Awareness + Skill means you might Live To Ride another day

        Comment

        • #49
          not necessarily. A good oversize can last as long as a standard bore from the company ( depending on riding conditions, 30,000-50,000 kms ).


          My offerings to the gods of speed -

          - KTM Duke 200
          - Yamaha RXZ 5 speed


          Comment

          • #50
            Guys I ordered a first oversize TKR Japan piston kit yesterday do you think it was a good choice? Ran me down to 1.1K INR including shipping.
            RIP ਕਾਕਾ ਭੈਣੀਆਂਵਾਲਾ (Santokh Singh Rataurh)

            Comment

            • #51
              where did you order it from?
              1985 Yamaha RD350 HT
              1989 Ki-Honda 110
              1994 Suzuki Shogun
              1997 Yamaha RX135
              2008 Yamaha FZ
              Suzuki Supra Powerup
              IND-SUZUKI AX100
              Hero IMPULSE
              TVS NTORQ


              No Cams, No Valves, No Headaches.

              Comment

              • #52
                Hey yamdoot aalop143 helped me out with the piston
                RIP ਕਾਕਾ ਭੈਣੀਆਂਵਾਲਾ (Santokh Singh Rataurh)

                Comment

                • #53
                  Guys I have run into a bit of a snag with my RX, until 1/4th throttle doesn't matter what gear the bike is in it is always bogging. Like it is out of gas but if I wind it up to like 3/4th it starts working fine. Any ideas?
                  RIP ਕਾਕਾ ਭੈਣੀਆਂਵਾਲਾ (Santokh Singh Rataurh)

                  Comment

                  • #54
                    Oh and the bogging problem goes away if I completely tighten the pilot jet screw which obviously leads to black and mucky spark plug
                    RIP ਕਾਕਾ ਭੈਣੀਆਂਵਾਲਾ (Santokh Singh Rataurh)

                    Comment

                    • #55
                      you are running very lean. upsize the pilot jet and see. what no. jets are you running? and whats the needle clip position?
                      By 'pilot jet screw' do you mean air acrew?
                      1985 Yamaha RD350 HT
                      1989 Ki-Honda 110
                      1994 Suzuki Shogun
                      1997 Yamaha RX135
                      2008 Yamaha FZ
                      Suzuki Supra Powerup
                      IND-SUZUKI AX100
                      Hero IMPULSE
                      TVS NTORQ


                      No Cams, No Valves, No Headaches.

                      Comment

                      • #56
                        Hey yamdoot my bike is running on the stock pilot jet and yes I was referring to the air screw. The needle jet is at the first cog from the top Do you think I should try the second cog? IMO I don't think needle jet kicks in till the throttle is like 1/4 open, I think it kicks in somewhere around 1/2 and goes till 3/4 after which the fuel is supplied by the main jet. That's what I think but eh I could be wrong
                        Last edited by dafc; 11-28-2010, 07:31 AM.
                        RIP ਕਾਕਾ ਭੈਣੀਆਂਵਾਲਾ (Santokh Singh Rataurh)

                        Comment

                        • #57
                          Originally posted by dafc View Post
                          Guys I have run into a bit of a snag with my RX, until 1/4th throttle doesn't matter what gear the bike is in it is always bogging. Like it is out of gas but if I wind it up to like 3/4th it starts working fine. Any ideas?
                          Is it 1/4th or 1/8th? Check your needle position? It should be in 2nd from bottom. What's the color of your spark plug? Are there any leaks in form of black oil that is found near the mouth of the exhaust?
                          Skill is what keeps you on a Motorcycle
                          Awareness + Skill is what keeps you out of harm's way
                          ATGATT + Awareness + Skill means you might Live To Ride another day

                          Comment

                          • #58
                            Originally posted by dafc View Post
                            Hey yamdoot my bike is running on the stock pilot jet and yes I was referring to the air screw. The needle jet is at the first cog from the top Do you think I should try the second cog? IMO I don't think needle jet kicks in till the throttle is like 1/4 open, I think it kicks in somewhere around 1/2 and goes till 3/4 after which the fuel is supplied by the main jet. That's what I think but eh I could be wrong
                            try cleaning the carb had the same problem in my kb
                            Kawasaki KB100/enduro/125 substitute parts list http://www.xbhp.com/talkies/508615-post105.html

                            Comment

                            • #59
                              Originally posted by dafc View Post
                              Hey yamdoot my bike is running on the stock pilot jet and yes I was referring to the air screw. The needle jet is at the first cog from the top Do you think I should try the second cog? IMO I don't think needle jet kicks in till the throttle is like 1/4 open, I think it kicks in somewhere around 1/2 and goes till 3/4 after which the fuel is supplied by the main jet. That's what I think but eh I could be wrong
                              it should be at third from the top.. if it still bogs, try the 4th clip from the top. Open the carb and clean all the jets and holes and passages carefully. Remove the brass tube on which the main jet is screwed and clean it too.
                              1985 Yamaha RD350 HT
                              1989 Ki-Honda 110
                              1994 Suzuki Shogun
                              1997 Yamaha RX135
                              2008 Yamaha FZ
                              Suzuki Supra Powerup
                              IND-SUZUKI AX100
                              Hero IMPULSE
                              TVS NTORQ


                              No Cams, No Valves, No Headaches.

                              Comment

                              • #60
                                Hey guise!!! thanks for all the input!! I have set the jet needle to this position


                                and this is what the spark plug looks like now





                                I think it is still mucky which means running too rich what say?
                                RIP ਕਾਕਾ ਭੈਣੀਆਂਵਾਲਾ (Santokh Singh Rataurh)

                                Comment

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