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Hero Honda Karizma ZMR

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  • Re: Hero Honda Karizma ZMR

    FYI, check the rusting of the silencer. was powder coated twice, last being 4 years back, still back to square one, functional performing absolutely fine. No complains either on the 1.25L kms run bike.

    Stories of the open road...........

    Comment


    • Re: Hero Honda Karizma ZMR

      Hey Guys, Coming back to our ZMR thread after some time.. Hope all along with their ZMRs are doing great

      BTW, a few updates from my end.. I have finally completed the run in period on my ZMR.. !! 2000 KMs completed without any show stopper.. happy n kinda relaxed as i can now plan to revv it up a bit more..

      But had some issues at the same time too.. I had been continuously feeling those irritating vibrations at the foot pegs & handle bar.. The vibrations used to be quite prominent once i crossed 60-65 on speedo & that used to be such a spoilsport not that the engine erred in providing the pick up or stopped going beyond a limit.. i mean i though not so very happily but used to cruise at 90 kmph without any additional trouble.. However having said that I always felt as if the engine was never really so happy giving that output.. I could always feel that extra resonance & bit of extra noise (even while revving down without applying clutch after revving up for some hundred meters) .. as if it used to get angry if i revved !!!!

      Got my second service done earlier than planned so that i can get that stupid vibration issue attended.. but to no avail.. Therefore brought the bike again to the SVC a week after the second service... Luckily i have one senior supervisor close to me at the SVC & i asked him to check the vibrations & noise personally.. He test rode along with one of his trusted senior mechanic & came back with a shocker "Bro, your bad luck; there is a major issue with the engine & we need to open it & replace some major parts;" !!! I was like "what !!! this is a 3 month old bike & you are gonna open up the engine !!" But somehow decided to let him do whatever he wanted & left the bike at SVC.. I just trusted him as he is close to me.. Finally got back my bike after 3 days & also got a list of the parts they have changed..

      1. Crank Shaft Component
      2. Cam Shaft Component
      3. Arm Valve Rocker
      4. Bearing, Ball Radial

      All these things though came under warranty, but i still had to pay 900 bucks for consumables..

      However the best part of the story is my engine has really become way smoother n relaxed than what it used to be !!! Vibration has been reduced to a significant extent & I feel way better while ridding it now.. Phewww.. Finally !! Though i refrained from revving it as these are major parts & they would again need a bit of run in.. But am sure the replacement of these parts has definitely helped.. Still fingers crossed; lets see how things turn up after 500 KM from here..

      My Bikes:
      Yamaha RD (The one which taught me what riding is; Can never forget this one)
      Bajaj Caliber (The one closest to my heart; I still have it after 15 yrs !)
      Yamaha R15 V2.0 (The best I had; Ah it let me become the college hunk I once used to be :) )
      Hero Honda Karizma ZMR (The bike for the family man in me; The practical one; The current one)

      Comment


      • Re: Hero Honda Karizma ZMR

        Originally posted by Bibhudatta View Post
        Hey Guys, Coming back to our ZMR thread after some time.. Hope all along with their ZMRs are doing great

        BTW, a few updates from my end.. I have finally completed the run in period on my ZMR.. !! 2000 KMs completed without any show stopper.. happy n kinda relaxed as i can now plan to revv it up a bit more..

        But had some issues at the same time too.. I had been continuously feeling those irritating vibrations at the foot pegs & handle bar.. The vibrations used to be quite prominent once i crossed 60-65 on speedo & that used to be such a spoilsport not that the engine erred in providing the pick up or stopped going beyond a limit.. i mean i though not so very happily but used to cruise at 90 kmph without any additional trouble.. However having said that I always felt as if the engine was never really so happy giving that output.. I could always feel that extra resonance & bit of extra noise (even while revving down without applying clutch after revving up for some hundred meters) .. as if it used to get angry if i revved !!!!

        Got my second service done earlier than planned so that i can get that stupid vibration issue attended.. but to no avail.. Therefore brought the bike again to the SVC a week after the second service... Luckily i have one senior supervisor close to me at the SVC & i asked him to check the vibrations & noise personally.. He test rode along with one of his trusted senior mechanic & came back with a shocker "Bro, your bad luck; there is a major issue with the engine & we need to open it & replace some major parts;" !!! I was like "what !!! this is a 3 month old bike & you are gonna open up the engine !!" But somehow decided to let him do whatever he wanted & left the bike at SVC.. I just trusted him as he is close to me.. Finally got back my bike after 3 days & also got a list of the parts they have changed..

        1. Crank Shaft Component
        2. Cam Shaft Component
        3. Arm Valve Rocker
        4. Bearing, Ball Radial

        All these things though came under warranty, but i still had to pay 900 bucks for consumables..

        However the best part of the story is my engine has really become way smoother n relaxed than what it used to be !!! Vibration has been reduced to a significant extent & I feel way better while ridding it now.. Phewww.. Finally !! Though i refrained from revving it as these are major parts & they would again need a bit of run in.. But am sure the replacement of these parts has definitely helped.. Still fingers crossed; lets see how things turn up after 500 KM from here..
        Initial ZMr 2009 models had some problem in the above mentioned parts...but the new ZMR has been improved a lot and i assume this is a first case i am hearing to have parts changed in a couple of months from purchase...

        Comment


        • Re: Hero Honda Karizma ZMR

          Guys, Please Ready Fully and Reply. My ZMR ki life ki sawal hein

          Guys, I got my ZMR on 3-5-2013, yes, exactly 1 year back and has done 9000kms only. I did complete the run in period properly but, in between had a short shoot upto 100kmph, even though the acceleration was gradual without much sudden twist of the throttle. It used to give me around 45 kmpl in mixed conditions but after the 4th service, it dropped a bit, and now I am getting around 40kmpl.

          My bike's oil gasket was somehow damaged before the 4th service and it ran on low oil and my bike used to be somewhat rough. I thought it may be because I had not changed the oil for a long time (I did the 3rd service in november 2012 and 4th in february 2012) and I did not use the bike for about a month coz of a small accident that caused my finger to break. I had to ride the bike around 150 kms from my place of work to my home and usually cruize at around 85 kmph coz the road is mostly highway. But in between there were some teens provoking to race with me in their R15v1.

          Initially I did not mind them, but finally I took a shot, and realized I was taking time to get to the topspeed even though I won the race as there were some traffic on the road. After the race, the bike became much more rough, and I felt as if I am riding an old pulsar. I reached home somehow without engine stalling. As I was sure, there was some issues with the bike, I decided to check the engine oil level, and I found the oil level was "NIL" Of course some slight amount of oil was there, as I started the engine, turned it off and checked the oil level, the lead was showing some signs of oil on it I called the service center, and they asked me to go there. They advised me, it wont be an issue if I ride for 5 mins without oil (Service center is about 6 kms from my home). Reached there, they topped up the oil, found some serious oil leak, asked me to change the oil gasket, and charged me around 500 for changing it as it comes under consumables.

          After this incident I used the bike for nearly 3500 kms, in mixed riding conditions, mostly over 85 kmph, but I should say, the vibrations were increased considerably and there is a slight decrease in mileage and pickup (mainly with pillion). There is no change in the exhaust note and all, the smoke coming out is colorless, but is having some odor. I am not sure whether all ZMRs will be having the odor, as I dint check it before.

          So my questions are:

          1. Has my bike's engine undergone any serious damage during the incident
          (100 kms without/less oil, around 10 mins insane driving at topspeed of 125+, and most other times above 85)

          2. What must have caused the decrease in mileage?

          3. Service center changed some bushes and all, but still vibrations are there from 55 to 65 and more than 85, vibrations creep exponentially. I can literally hear my front cowl vibrating, and I cannot see anything on the RVM (I have ridden P220 several times, and the case is similar to stock P220 RVMs)

          4. Can anyone describe the process of removing vibrations by adding double sided tape or rubber pieces with PICTORIAL ILLUSTRATIONS as me and my service center mechanic is literally clueless about where to apply these tapes and stuff. Many guys tell to apply the tapes where metal parts meet the plastic parts, but already rubber bushes are there in such places in the ZMR
          RVM is a good tool to see your buddys losing behind while racing :)

          Now @ 223CC Karizma ZMR

          Comment


          • Re: Hero Honda Karizma ZMR

            Originally posted by vishnurajanme View Post
            Guys, Please Ready Fully and Reply. My ZMR ki life ki sawal hein
            1. Depends. If the oil drop was significant, then 100 kms is enough to damage the engine. You were lucky the engine didn't have a seizure.
            2 FE loss maybe attributed to old spark plugs, dirty air filter, worn out chain sprockets.
            3. Vibes and double sided tape - chuck double sided tapes, use rubber tubes. Ask your mech to put the tube around the speedo console and under every screw mount. Also get your front sprocket cleaned off muck. Do you lube the chain?
            Got a $5 head? Get a $5 helmet.
            Because everyone who passes, isn't a martyr!

            Bullet Service Guide CBR 250R Parts Manual Fz16 service manual - https://drive.google.com/file/d/0B1-...VFQmJzakk/view
            Hero Moto Corp Bikes' Parts RE STD 350 Wiring Diagram (CI) Service Manual - Classic 350/500
            ZMR parts - https://drive.google.com/file/d/0B-U...it?usp=sharing
            P200NS Spares' prices - https://docs.google.com/spreadsheet/...taGd5R2c#gid=0

            Comment


            • Re: Hero Honda Karizma ZMR

              Originally posted by vishnurajanme View Post
              So my questions are:

              1. Has my bike's engine undergone any serious damage during the incident
              (100 kms without/less oil, around 10 mins insane driving at topspeed of 125+, and most other times above 85)

              ==> 100 km without oil can surely cause a serious damage...but having less oil for those many km shouldn't be the reason behind your problem.. well then the question is "how less it was" !

              Man, I used to ride my Kawashaki Caliber at it's top speed for more than 20 km at stretch in year 2000 & I never faced your current issue even then & with a low end bike! Therefore if riding over a mere 85kmph or at a top speed can cause such damage to a ZMR then I would definitely sell it off in the next one hour
              Originally posted by vishnurajanme View Post
              .. Not that am saying it can't obviously happen with a ZMR, but I very strongly doubt it & I would pray it is not true..

              2. What must have caused the decrease in mileage?
              ==> As Divya pointed out, FE loss can be related to the condition of your filter, chain components, ignition. But it can be equally & infact more due a sluggish engine too. It is a simple logic; consider a case where some of the critical components of your engines have worn out due to any damn reason, but you are still revving it up continuously. where would the required power come from ? only from oil combustion right ?


              3. Service center changed some bushes and all, but still vibrations are there from 55 to 65 and more than 85, vibrations creep exponentially. I can literally hear my front cowl vibrating, and I cannot see anything on the RVM (I have ridden P220 several times, and the case is similar to stock P220 RVMs)
              ==> This only means that it is high time you get your engine opened up & reworked. There is no point in delaying the inevitable. I did that last week with my 3 month old ZMR (check my post above for the components changed) !! Damn you Hero Motor Corp


              4. Can anyone describe the process of removing vibrations by adding double sided tape or rubber pieces with PICTORIAL ILLUSTRATIONS as me and my service center mechanic is literally clueless about where to apply these tapes and stuff. Many guys tell to apply the tapes where metal parts meet the plastic parts, but already rubber bushes are there in such places in the ZMR

              ==> Man, nothing would help if your engine itself is producing hell lot of vibrations. Focus on the options to cure it instead of trying to suppress it. Though you can do all this along with the cure.



              I have one question though; I always got the impression from some of your posts that you are somewhere a revv friendly guy.. Then what prompted you to buy a ZMR ??

              ----consecutive posts auto-merged-----

              Folks I too need an urgent help..

              As i have mentioned above, i had my ZMR engine opened up & come components were changed to arrest the engine sluggishness/vibrations. However as i returned home I could hear a "thakkkk" or a "crrrrr crrrrr " sound when I pulled the bike in the first gear. I couldn't notice this sound at the SVC due to so much of noise around. But I can hear it clearly with some silence around. Now these kind of sound come only when the bike is stating to pull from a very low speed: mainly in the first gear. But it doesn't come once i move to higher gears & attend a bit of speed.

              I took the bike back to the SVC thinking it might be due to chain tightness or sprocket misfitting. But all those things are fine. Infact SVC changed the rear sprocket bearing & We all felt as if the issue has been resolved. But the issue resurfaced as soon as i returned home

              Can anyone of you please let me know from your experience as what might be the issue ? Have they not fitted the engine components correctly? Should i ask them to reopen the engine & check ? Have anyone of you experiences a similar issue when your engine was worked upon previously ?

              I am taking the bike back to SVC tomorrow. Any suggestion from your end would help a gerat deal. Thanks in advance..

              PSR sir, if you are listening, any idea ???

              My Bikes:
              Yamaha RD (The one which taught me what riding is; Can never forget this one)
              Bajaj Caliber (The one closest to my heart; I still have it after 15 yrs !)
              Yamaha R15 V2.0 (The best I had; Ah it let me become the college hunk I once used to be :) )
              Hero Honda Karizma ZMR (The bike for the family man in me; The practical one; The current one)

              Comment


              • Re: Hero Honda Karizma ZMR

                Originally posted by Divya Sharan View Post
                Do you lube the chain?
                I am not sure. The service center guys must have done that coz I give the bike for free service at correct intervals

                ----consecutive posts auto-merged-----

                Originally posted by Bibhudatta View Post

                ==> 100 km without oil can surely cause a serious damage...but having less oil for those many km shouldn't be the reason behind your problem.. well then the question is "how less it was" !

                I am not sure, but my service center guys told me that, my bike was losing oil gradually as the oil gasket had a leak. So probably when I started the journey, I had around 75% oil, and in course of time, it must have reduced to around 25% or less. Mainly because I revvd hard during the race


                I have one question though; I always got the impression from some of your posts that you are somewhere a revv friendly guy.. Then what prompted you to buy a ZMR ??

                I dont revv the bike much at lower gears, but during a street race, revving is inevitable at 3rd and 4th gears, even if ZMR has a linear power delivery. Else it wont reach the topspeed. My attained topspeed till now was 129 (After revving at 3rd and 4th, crouching) and 124 (without revving much at 3rd and 4th, crouching, linear acceleration at 5th)

                Man, I used to ride my Kawashaki Caliber at it's top speed for more than 20 km at stretch in year 2000 & I never faced your current issue even then & with a low end bike! Therefore if riding over a mere 85kmph or at a top speed can cause such damage to a ZMR then I would definitely sell it off in the next one hour

                Bro, I also use to drive at my bikes topspeed minimum 10 kms in this 150 km stretch "ALWAYS" but the thing is, I rode at the topspeed when the bike had low oil. Thats what I asked



                ==> Man, nothing would help if your engine itself is producing hell lot of vibrations. Focus on the options to cure it instead of trying to suppress it. Though you can do all this along with the cure.

                I am still not sure if the engine has gone wrong. My service center says, engine has no issues and all. How to check whether its an engine problem? Also, I feel vibrations from the left foot peg during 55-65 and right foot peg during 85+ My friend, whos sitting as a pillion feels the reverse. Anyone has got a picture guide where all to apply the rubber washers and all?



                Folks I too need an urgent help..

                As i have mentioned above, i had my ZMR engine opened up & come components were changed to arrest the engine sluggishness/vibrations. However as i returned home I could hear a "thakkkk" or a "crrrrr crrrrr " sound when I pulled the bike in the first gear. I couldn't notice this sound at the SVC due to so much of noise around. But I can hear it clearly with some silence around. Now these kind of sound come only when the bike is stating to pull from a very low speed: mainly in the first gear. But it doesn't come once i move to higher gears & attend a bit of speed.

                Mostly tappet sound

                Answers in bold
                RVM is a good tool to see your buddys losing behind while racing :)

                Now @ 223CC Karizma ZMR

                Comment


                • Re: Hero Honda Karizma ZMR

                  Originally posted by Bibhudatta View Post


                  I have one question though; I always got the impression from some of your posts that you are somewhere a revv friendly guy.. Then what prompted you to buy a ZMR ??

                  ----consecutive posts auto-merged-----

                  Folks I too need an urgent help..

                  As i have mentioned above, i had my ZMR engine opened up & come components were changed to arrest the engine sluggishness/vibrations. However as i returned home I could hear a "thakkkk" or a "crrrrr crrrrr " sound when I pulled the bike in the first gear. I couldn't notice this sound at the SVC due to so much of noise around. But I can hear it clearly with some silence around. Now these kind of sound come only when the bike is stating to pull from a very low speed: mainly in the first gear. But it doesn't come once i move to higher gears & attend a bit of speed.

                  I took the bike back to the SVC thinking it might be due to chain tightness or sprocket misfitting. But all those things are fine. Infact SVC changed the rear sprocket bearing & We all felt as if the issue has been resolved. But the issue resurfaced as soon as i returned home

                  Can anyone of you please let me know from your experience as what might be the issue ? Have they not fitted the engine components correctly? Should i ask them to reopen the engine & check ? Have anyone of you experiences a similar issue when your engine was worked upon previously ?

                  I am taking the bike back to SVC tomorrow. Any suggestion from your end would help a gerat deal. Thanks in advance..

                  PSR sir, if you are listening, any idea ???
                  Well, when do you hear it and did you try to locate from where the sound comes from?? "when I pulled the bike in first gear" by this statement, did you pull it with the bike engine running and idle?? what exactly are you trying to do here? do you hear that sound only after the engine heats up?? try to identify from where the noise is coming from!
                  Splendor - 2k to 2006
                  Karizma - 2k3 to 2009
                  P180 - 2k6 to 2k9
                  Hunk - Oct 2k7 til now
                  ZMR - 2010 to Forever
                  RX135(2k) - 2013 to 2018
                  Ninja 250R (2010) - 2016 til now
                  RayZ - 2015 til now
                  Ninja 650 (2014) - 2017 til now


                  Delhi to Narkanda
                  Delhi to Coimbatore
                  Delhi to Nepal

                  Comment


                  • Re: Hero Honda Karizma ZMR

                    Originally posted by Bibhudatta View Post

                    I am taking the bike back to SVC tomorrow. Any suggestion from your end would help a gerat deal. Thanks in advance..
                    Switch over to xxW40 oil and get your tappets adjusted.

                    Originally posted by vishnurajanme View Post
                    I am not sure. The service center guys must have done that coz I give the bike for free service at correct intervals
                    SVC folk use used oil to wet the chain. Its good for the first 50 kms at max. Your chain is running dry. Buy a lube.


                    Ok, so I have done 10k kms on PSD. No punctures yet. (touch wood)
                    Still has enough life left. Rode in heavy downpour yesterday. Grip levels were too good.

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                    Last edited by Divya Sharan; 05-05-2013, 04:54 PM.
                    Got a $5 head? Get a $5 helmet.
                    Because everyone who passes, isn't a martyr!

                    Bullet Service Guide CBR 250R Parts Manual Fz16 service manual - https://drive.google.com/file/d/0B1-...VFQmJzakk/view
                    Hero Moto Corp Bikes' Parts RE STD 350 Wiring Diagram (CI) Service Manual - Classic 350/500
                    ZMR parts - https://drive.google.com/file/d/0B-U...it?usp=sharing
                    P200NS Spares' prices - https://docs.google.com/spreadsheet/...taGd5R2c#gid=0

                    Comment


                    • Re: Hero Honda Karizma ZMR

                      Originally posted by vishnurajanme View Post
                      I am not sure. The service center guys must have done that coz I give the bike for free service at correct intervals

                      I am still not sure if the engine has gone wrong. My service center says, engine has no issues and all. How to check whether its an engine problem? Also, I feel vibrations from the left foot peg during 55-65 and right foot peg during 85+ My friend, whos sitting as a pillion feels the reverse. Anyone has got a picture guide where all to apply the rubber washers and all?

                      ==> How can they say so without opening the engine ?? How have they done the RCA ? BTW, Never expect the SVC guys to agree on the engine having an issue so easily.. Opening an engine is the last thing they would do even though the issue would be with engine actually.. This is not only risky for them, it is also costly for them w.r.t everything; time, effort & money (read warranty).. You should actually force them a bit on that front...
                      ----consecutive posts auto-merged-----




                      Answers in bold
                      Originally posted by rreneav1987 View Post
                      Well, when do you hear it and did you try to locate from where the sound comes from?? "when I pulled the bike in first gear" by this statement, did you pull it with the bike engine running and idle?? what exactly are you trying to do here? do you hear that sound only after the engine heats up?? try to identify from where the noise is coming from!

                      ==> Yep Bro, initially we all thought it is coming out somewhere from the chain/sprocket components.. but it is now clear that the sound is from some other area & it is zeroing down to the engine itself..
                      Yep, seems when engine gets to an idle condition.. mostly when the engine slows down after i shift down to 1st gear due to a speed breaker say (as an example) & i start pulling after I cross the breaker. The sound comes here... particularly when the speed is under 15-20 kmph.. No heating issue at all...
                      Originally posted by Divya Sharan View Post
                      Switch over to xxW40 oil and get your tappets adjusted.

                      Thanks a lot Divya & Vishnu.. I would ask the SVC guys to check on the tappet noise/valve settings..
                      Last edited by Bibhudatta; 05-05-2013, 08:55 PM.

                      My Bikes:
                      Yamaha RD (The one which taught me what riding is; Can never forget this one)
                      Bajaj Caliber (The one closest to my heart; I still have it after 15 yrs !)
                      Yamaha R15 V2.0 (The best I had; Ah it let me become the college hunk I once used to be :) )
                      Hero Honda Karizma ZMR (The bike for the family man in me; The practical one; The current one)

                      Comment


                      • Re: Hero Honda Karizma ZMR

                        Also, if my engine had some damage due to less oil, what all must have happened? Chances of piston loosening? I think it can be corrected by a big bore, right guys?
                        RVM is a good tool to see your buddys losing behind while racing :)

                        Now @ 223CC Karizma ZMR

                        Comment


                        • Re: Hero Honda Karizma ZMR

                          Originally posted by vishnurajanme View Post
                          Also, if my engine had some damage due to less oil, what all must have happened? Chances of piston loosening? I think it can be corrected by a big bore, right guys?
                          At max, you may have to change the block. That's the worst case, but since your bike is running, I feel we can keep that aside for now.
                          AFAIK, pistons don't get loose (I may be wrong), they can get stuck however. Reboring would mean that you'd never be able to use stock pistons again. (in the same block)

                          You can get oversized pistons from USHA or from P200NS. You'd need supporting gudgeon pins for the connecting rod since the stock ones won't work. Finally, if the work is carried out well, you'd have ~235 cc to play with! Then, run in for 1000 kms.
                          Got a $5 head? Get a $5 helmet.
                          Because everyone who passes, isn't a martyr!

                          Bullet Service Guide CBR 250R Parts Manual Fz16 service manual - https://drive.google.com/file/d/0B1-...VFQmJzakk/view
                          Hero Moto Corp Bikes' Parts RE STD 350 Wiring Diagram (CI) Service Manual - Classic 350/500
                          ZMR parts - https://drive.google.com/file/d/0B-U...it?usp=sharing
                          P200NS Spares' prices - https://docs.google.com/spreadsheet/...taGd5R2c#gid=0

                          Comment


                          • Re: Hero Honda Karizma ZMR

                            Originally posted by Bibhudatta View Post

                            Yep Bro, initially we all thought it is coming out somewhere from the chain/sprocket components.. but it is now clear that the sound is from some other area & it is zeroing down to the engine itself..
                            Yep, seems when engine gets to an idle condition.. mostly when the engine slows down after i shift down to 1st gear due to a speed breaker say (as an example) & i start pulling after I cross the breaker. The sound comes here... particularly when the speed is under 15-20 kmph.. No heating issue at all...

                            Thanks a lot Divya & Vishnu.. I would ask the SVC guys to check on the tappet noise/valve settings..
                            Correct me if I am wrong.. if its an issue with the Tappet.. isn't the noise suppose to appear throughout and not only when you are nearing the idle speed? but get the tappet adjusted to see if that resolves the issue..

                            If you can get the sound recorded and maybe attach it here.. it might help us identify it..

                            Is it a squeaking noise?? is the noise coming from the left side or the right side of the engine..?


                            Originally posted by vishnurajanme View Post
                            Also, if my engine had some damage due to less oil, what all must have happened? Chances of piston loosening? I think it can be corrected by a big bore, right guys?
                            it can cause the seizure of your Engine.. You said your bike is emitting smoke, didn't you?? it could be that the bike is taking in too much oil.. do one thing.. take it a local mechanic.. and just get him to ride your bike.. he might be able to give you the cause.. just to check as those guys have better knowledge compared to our so called SVC Mechanics.. Once you come to know what the problem is.. you can get the SVC guys to check on it.. FE can reduce due to many reasons.. try to figure out what is the recent change you did to your bike.. My Black Pearl Gives me an awesome FE till date and she is running smoother everyday.. (touchwood)

                            Originally posted by Divya Sharan View Post
                            At max, you may have to change the block. That's the worst case, but since your bike is running, I feel we can keep that aside for now.
                            AFAIK, pistons don't get loose (I may be wrong), they can get stuck however. Reboring would mean that you'd never be able to use stock pistons again. (in the same block)

                            You can get oversized pistons from USHA or from P200NS. You'd need supporting gudgeon pins for the connecting rod since the stock ones won't work. Finally, if the work is carried out well, you'd have ~235 cc to play with! Then, run in for 1000 kms.
                            My Question to you buddy is.. if the piston of P200NS is oversized.. how comes its a 200cc?? Just confused..

                            and i guess you are right.. the picstons don't get loose.. the block gets seized and gets scratched by the pistons without oil.. thats what I remember from my Pulsar 180 correct me if I wrong..
                            Last edited by rreneav1987; 05-05-2013, 11:53 PM.
                            Splendor - 2k to 2006
                            Karizma - 2k3 to 2009
                            P180 - 2k6 to 2k9
                            Hunk - Oct 2k7 til now
                            ZMR - 2010 to Forever
                            RX135(2k) - 2013 to 2018
                            Ninja 250R (2010) - 2016 til now
                            RayZ - 2015 til now
                            Ninja 650 (2014) - 2017 til now


                            Delhi to Narkanda
                            Delhi to Coimbatore
                            Delhi to Nepal

                            Comment


                            • Re: Hero Honda Karizma ZMR

                              Originally posted by rreneav1987 View Post
                              My Question to you buddy is.. if the piston of P200NS is oversized.. how comes its a 200cc?? Just confused..
                              displacement = bore*bore*0.7854*stroke*number of cylinders

                              Karizma:-
                              Bore - 65.5 mm
                              Stroke - 66.2 mm

                              displacement = 65.5*65.5*0.7854*66.2*1 (mm*mm*mm) =
                              223065.02757 cubic mm = ~223.06502757 cubic cm. Hence 223 cc

                              Pulsar 200 NS:-
                              Bore - 72 mm
                              Stroke - 49 mm

                              displacement - 72*72*0.7854*49*1 (mm*mm*mm) = 199504.1664 cubic mm = 199.5051664 cubic cm. Hence ~200 cc.

                              Now, when I plonk P200NS piston, bore increases to 72mm from 66.2mm and corresponding stroke reduces to approx 57.7 mm or so. (PSR/ACS would better explain how)

                              Hence displacement = 72*72*0.7854*57.7*1 (mm*mm*mm) = 234926.33472 cubic mm = 234.92633472 cubic cm. Hence ~235 cc.

                              Hope I was clear.
                              Got a $5 head? Get a $5 helmet.
                              Because everyone who passes, isn't a martyr!

                              Bullet Service Guide CBR 250R Parts Manual Fz16 service manual - https://drive.google.com/file/d/0B1-...VFQmJzakk/view
                              Hero Moto Corp Bikes' Parts RE STD 350 Wiring Diagram (CI) Service Manual - Classic 350/500
                              ZMR parts - https://drive.google.com/file/d/0B-U...it?usp=sharing
                              P200NS Spares' prices - https://docs.google.com/spreadsheet/...taGd5R2c#gid=0

                              Comment


                              • Re: Hero Honda Karizma ZMR

                                Originally posted by Divya Sharan View Post
                                displacement = bore*bore*0.7854*stroke*number of cylinders

                                Karizma:-
                                Bore - 65.5 mm
                                Stroke - 66.2 mm

                                displacement = 65.5*65.5*0.7854*66.2*1 (mm*mm*mm) =
                                223065.02757 cubic mm = ~223.06502757 cubic cm. Hence 223 cc

                                Pulsar 200 NS:-
                                Bore - 72 mm
                                Stroke - 49 mm

                                displacement - 72*72*0.7854*49*1 (mm*mm*mm) = 199504.1664 cubic mm = 199.5051664 cubic cm. Hence ~200 cc.

                                Now, when I plonk P200NS piston, bore increases to 72mm from 66.2mm and corresponding stroke reduces to approx 57.7 mm or so. (PSR/ACS would better explain how)

                                Hence displacement = 72*72*0.7854*57.7*1 (mm*mm*mm) = 234926.33472 cubic mm = 234.92633472 cubic cm. Hence ~235 cc.

                                Hope I was clear.
                                Crystal clear.. but what ll be the power delivery?? Would that be affected in any way?? I never wanna take risk with the precious engine of zmr.. is this a safer bet than joels?? And it should be cheaper i guess
                                Splendor - 2k to 2006
                                Karizma - 2k3 to 2009
                                P180 - 2k6 to 2k9
                                Hunk - Oct 2k7 til now
                                ZMR - 2010 to Forever
                                RX135(2k) - 2013 to 2018
                                Ninja 250R (2010) - 2016 til now
                                RayZ - 2015 til now
                                Ninja 650 (2014) - 2017 til now


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                                Delhi to Coimbatore
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