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Honda Unicorn

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  • #2911
    Re: Honda Unicorn

    Hi,

    Yes it is the same noise/engine strain and i am sure it takes out all the riding pleasure from you as well. Just few points to clarify

    Are you also facing this issue only after putting AX7 oil from Shell
    Did you do any tappet adjustment and was that useful
    How could the engine oil change have an effect on the tappet adjustment

    When i went to the service centre, they have replaced the kit valve set, gasket cylinder head, gasket head cover, ringset piston and the guide in valve and including labour it costed 2200 rupees . After this the issue got solved by about 50 percent, but still some engine strain/roughness is there.

    Please let me know, if you have or you could solve this issue.

    Thanks





    Originally posted by asn39 View Post
    Similar video has been uploaded by me just few posts back and a fellow member suggested a taappet check but i m still not finding somone who understand meanwhile buddy please just check my video if the NOISE is similar to urs ? as i am also running on ax7 the oil feels good n works well keep the engine cool

    probably its just tappet

    Comment

    • #2912
      Re: Honda Unicorn

      Originally posted by raja1982 View Post
      Hi,

      Yes it is the same noise/engine strain and i am sure it takes out all the riding pleasure from you as well. Just few points to clarify

      Are you also facing this issue only after putting AX7 oil from Shell
      Did you do any tappet adjustment and was that useful
      How could the engine oil change have an effect on the tappet adjustment

      When i went to the service centre, they have replaced the kit valve set, gasket cylinder head, gasket head cover, ringset piston and the guide in valve and including labour it costed 2200 rupees . After this the issue got solved by about 50 percent, but still some engine strain/roughness is there.

      Please let me know, if you have or you could solve this issue.

      Thanks
      Hmm i drove today somebody elses unicorn and it was very smooth no any sound from his engine but the thing is he drove more than 20000 km in about 18 months he said might be because of less running i am having issue but now its definately an issue ill take it to some good service centre but i can do it after 2 months only as my trusted service centre is in south mumbai and my exams up in may

      ill surely update on this just have patience in d meanwhile if u get any other solution just keep posting
      Last edited by asn39; 03-17-2015, 11:47 PM.

      Comment

      • #2913
        Re: Honda Unicorn

        Originally posted by ashwanth.r View Post
        Just asking out of curiosity - Is there anyone who has taken the good old Unicorn/CBZ engine upto 1,00,000 kms without a rebore/cylinder head replacement (proper regular services)? I only know people who have done the same for Fieros, splendors and GS150R. If no, would the likely cause be absence of a dedicated paper oil filter/shift to 10W-30 oil by Honda? Anyway most people sell off their bikes at 60-70 kms on odometer.
        I recently spoke to a guy who had brought his 2006 unicorn for a complete engine rebuild. I was shocked to see the odo reading of 32k km. Upon asking him why he had needed to do an engine rebuild at such low kms, he replied that the actual reading should be 1,35,000km!!! He had run 3000km with broken speedo cable. He had also never gone for a rebore. My mind was blown as the highest odo reading I had seen on a uni was around 75k or 80k kms and even that bike had gone for a rebore at 60k kms. This guy was a medical rep and said he covered almost 150 to 200 kms a day travelling between Kochi and thrissur. He mentioned he changed the engine oil every 2000-2500km and had initially used 10w30 but started using 20w40 from past 2 years. p.s his engine rebuild cost 22k in parts and labour. Done at johns Honda, thrissur
        Last edited by windrider007; 03-18-2015, 10:40 PM.

        Comment

        • #2914
          Re: Honda Unicorn

          Originally posted by raja1982 View Post
          Hi,

          Yes it is the same noise/engine strain and i am sure it takes out all the ...........
          ..... any tappet adjustment and was th

          Please let me know, if you have or you could solve this issue.

          Thanks
          I had a talk with a mechanic he said its a TAPPET noise and on checking oil he said it has become too thin so that might be one reason for roughness and besides HE ALSO SUGGESTED if you are not going to drive for few months don't do it now do it at later when u plan to ride regularly

          I WAS SURPRISED TO SEE THE TAPPET WORD FROM somebody locals mouth
          Anyway be patient ill be updating about issue but only after may

          Comment

          • #2915
            Re: Honda Unicorn

            Originally posted by windrider007 View Post
            I recently spoke to a guy who had brought his 2006 unicorn for a complete engine rebuild. I was shocked to see the odo reading of 32k km. Upon asking him why he had needed to do an engine rebuild at such low kms, he replied that the actual reading should be 1,35,000km!!! He had run 3000km with broken speedo cable. He had also never gone for a rebore. My mind was blown as the highest odo reading I had seen on a uni was around 75k or 80k kms and even that bike had gone for a rebore at 60k kms. This guy was a medical rep and said he covered almost 150 to 200 kms a day travelling between Kochi and thrissur. He mentioned he changed the engine oil every 2000-2500km and had initially used 10w30 but started using 20w40 from past 2 years. p.s his engine rebuild cost 22k in parts and labour. Done at johns Honda, thrissur

            Thanks for sharing - I thought the 150cc from Honda is incapable for crossing 1 lac in Indian conditions (have not heard any till this one). But regular service and not-abusing can make this gem cross a lac easily . Eterno had a Honda recommended oil change interval of 3000 kms - this is an ideal change interval for mineral oils.

            And in general, the bikes that cross a lac easily on their odometers are usually the ones that have a minimum of 100-150 kms per day running, i.e., people who take them to work under highway-ish conditions. Highway running is less stressful for the bike (?) compared to constant stop-and-go city traffic. We can also observe that these mile munchers spend less on spares - for example if one uses the brake 10 times in 1 km in the city, the same is used one once every 10 kms on a free highway. The battery too is sufficiently charged to keep it ticking very long.

            Comment

            • #2916
              Re: Honda Unicorn

              Originally posted by Jith_in View Post
              Don't worry take it to asc. They will open the head and will send it to lathe and will insert a sleeve and fix the bolt. Not a serious issue. No part replacement is needed. It will just cost you less than 500 rs. Also while sending it to lathe ask them to insert sleeve for the other bolt also so that it won't create any problems in future. But first you should try to wrap some aluminium foil paper around the bolt threads and tight gently it may work. I am also running with this on my xtreme.
              Thank you Sir,

              I took help of my local Mechanic. In Lathe, I was charged 150 RS for both sides.

              Mechanic asked 100 RS as labor and also adjusted tappet which was making much noise.

              Now the bike is running smooth as before in the 60KMPH mark.


              Speedo @ 44444.4 KM during my travel to office on Monday. Also Completed 5 years with Unicorn.

              Click image for larger version Name: IMG_20150323_055815805.jpg Views: 1 Size: 35.7 KB ID: 1907507
              Last edited by BlackPanther; 03-25-2015, 10:34 AM.
              2005 - Hercules MTB Thriller | 2018 - Apollo Evade
              2010 - Unicorn- 61K
              2011 - GS - 49K
              2016 - Gusto - 15K
              2017 - Tiago XZ 1.2P - 11K
              __________________
              Sold
              2000-2005 - Hero Skipper | 2014-2018 Hercules Windpacer
              2012 - Activa 39K 2010 - Scooty Streak - 11.5K
              2013 - Nano CX 41.5 K

              Smoking KILLS...
              Wearing chin strap is equally important as wearing helmet.

              Comment

              • #2917
                Re: Honda Unicorn

                Guys i am done 1800 kms with shell ax7 oil while it was good at initial but just since last few kms ive started to feel emgine roughness and vibes between 4k to 5k rpm as i generally change gears between them this vibes are noticable in 3rd n 2nd hear and in 4th gear vibes are felt after 5k rpm

                Also while i start my bike in morning with choke i get wiered smell kind of burning

                Is oil due to be changed ?
                What about the smell ?

                Comment

                • #2918
                  Re: Honda Unicorn

                  Originally posted by asn39 View Post
                  Guys i am done 1800 kms with shell ax7 oil while it was good at initial but just since last few kms ive started to feel emgine roughness and vibes between 4k to 5k rpm as i generally change gears between them this vibes are noticable in 3rd n 2nd hear and in 4th gear vibes are felt after 5k rpm

                  Also while i start my bike in morning with choke i get wiered smell kind of burning

                  Is oil due to be changed ?
                  What about the smell ?
                  From my personal experience, the oil is good till 2k-2.2k kms.

                  What smell do you get??
                  Last edited by devils_friend; 03-26-2015, 02:12 PM.
                  The real beauty lies in throttle's twist!!

                  Headlight can be replaced, Head cannot be. Wear a helmet.

                  Comment

                  • #2919
                    Re: Honda Unicorn

                    Originally posted by devils_friend View Post
                    From my personal experience, the oil is good till 2k-2.2k kms.

                    What smell do you get??
                    kind of burning mostly through silencer i only feel while i start the bile first time only i think il try changing oil first
                    then oil filter and air filter also as air filter is also spoiled and i never changed oil filter before

                    Comment

                    • #2920
                      Re: Honda Unicorn

                      Originally posted by asn39 View Post
                      kind of burning mostly through silencer i only feel while i start the bile first time only i think il try changing oil first
                      then oil filter and air filter also as air filter is also spoiled and i never changed oil filter before
                      Are you starting the bike in enclosed area? If it is definitely "burning" smell take a look at the spark plug for any oil deposits, insert your finger at the silencer tip and check for gummy residue. Change the airfilter and tune the carburetor and see if the smell goes aways.Use Mobil Delvac 1300/1400 I am very much satisfied with this oil in my Unicorn.

                      Comment

                      • #2921
                        Re: Honda Unicorn

                        Originally posted by sandeepcf View Post
                        Are you starting the bike in enclosed area? If it is definitely "burning" smell take a look at the spark plug for any oil deposits, insert your finger at the silencer tip and check for gummy residue. Change the airfilter and tune the carburetor and see if the smell goes aways.Use Mobil Delvac 1300/1400 I am very much satisfied with this oil in my Unicorn.
                        i checked silencer thoroughly there were no deposits but mu finger got black when i inserted into silencer hopefully its normal ?
                        besides yes i start the bike in enclosed area and about spark plug i shall check soon thank you

                        besides my gear shifting is still hard from 1st to 2nd gear even after 2 years
                        does it mean service centres never cleaned the chain ?

                        Comment

                        • #2922
                          Re: Honda Unicorn

                          Originally posted by asn39 View Post
                          besides my gear shifting is still hard from 1st to 2nd gear even after 2 years
                          does it mean service centres never cleaned the chain ?
                          I don't know the exact reason for the hard shift.
                          Service center people don't clean the chain in general service(I've never seen chain cleaning for unicorn besides waterwash).
                          Why can't you clean the chain by yourself? There are a lot of threads in DIY section.
                          xBhp.com : The Global Indian Biking Community
                          http://www.xbhp.com/talkies/do-yourself/23814-diy-cleaning-cbz-extreme-hunk-unicorn-chain.html

                          xBhp.com : The Global Indian Biking Community
                          http://www.xbhp.com/talkies/do-yourself/18412-cleaning-motorcycle-chain-sprocket-2.html#post687285

                          Comment

                          • #2923
                            Re: Honda Unicorn

                            Originally posted by asn39 View Post
                            i checked silencer thoroughly there were no deposits but mu finger got black when i inserted into silencer hopefully its normal ?
                            besides yes i start the bike in enclosed area and about spark plug i shall check soon thank you

                            besides my gear shifting is still hard from 1st to 2nd gear even after 2 years
                            does it mean service centres never cleaned the chain ?
                            A bit of dirty chain won't cause hard gear shifts, but tight chain can.
                            Check your chain slack and ensure it has enough slack as mentioned in manual.
                            Check clutch setting, again, leave enough play on the gear lever as mentioned in manual.
                            And, if you are revving hard in first gear, then it may result in hard/noisy gear shifts.

                            Comment

                            • #2924
                              Re: Honda Unicorn

                              Originally posted by SatSon View Post
                              A bit of dirty chain won't cause hard gear shifts, but tight chain can.
                              Check your chain slack and ensure it has enough slack as mentioned in manual.
                              Check clutch setting, again, leave enough play on the gear lever as mentioned in manual.
                              And, if you are revving hard in first gear, then it may result in hard/noisy gear shifts.
                              Originally posted by sandeepcf View Post
                              I don't know the exact reason for the hard shift.
                              Service center people don't clean the chain in general service(I've never seen chain cleaning for unicorn besides waterwash).
                              Why can't you clean the chain by yourself? There are a lot of threads in DIY section.
                              xBhp.com : The Global Indian Biking Community
                              http://www.xbhp.com/talkies/do-yourself/23814-diy-cleaning-cbz-extreme-hunk-unicorn-chain.html

                              http://www.xbhp.com/talkies/do-yours...tml#post687285
                              ok chain HAS BEEN very dirty sludgy and all kind of deposits found i might just remove chain cover and use any TOOTHBRUSH

                              SCARY INCIDENT HAPPENED I WAS DRIVING BIKE AS USUAL AND I PUSHED 2nd GEAR AND BIKE WENT FEW METERS AWAY AND SUDDENLY DEAD !!!
                              i thought i might have not accelerated properly but that was not the case IT WENT DEAD STRAIGHT
                              I TRIED KICK START BUT IT FEELS KICK BECAME LOOSE MEANS EVEN IF I SIMPLY PLACE MY FOOT ON IT KICK GOES DOWN ALL THE WAY
                              I TRIED CHOCK OR POWER BUTTON START BUT JUST KEEP GIVING ME THAT STARTER SOUND BUT BIKE IS NOT STARTING

                              I REQUEST YOU ALL TO PLEASE GUIDE REGARDING ISSUE I DRIVE BIKE VERY LESS BUT ON MAINTAINANCE SIDE I DONT COMPROMISE BUT YET I HAVE TO FACE SUCH ISSUE
                              HOPE ITS NOT BIG ISSUE !!!

                              thank you all for previous replies and future replies too

                              Comment

                              • #2925
                                Re: Honda Unicorn

                                Originally posted by asn39 View Post
                                ok chain HAS BEEN very dirty sludgy and all kind of deposits found i might just remove chain cover and use any TOOTHBRUSH

                                SCARY INCIDENT HAPPENED I WAS DRIVING BIKE AS USUAL AND I PUSHED 2nd GEAR AND BIKE WENT FEW METERS AWAY AND SUDDENLY DEAD !!!
                                i thought i might have not accelerated properly but that was not the case IT WENT DEAD STRAIGHT
                                I TRIED KICK START BUT IT FEELS KICK BECAME LOOSE MEANS EVEN IF I SIMPLY PLACE MY FOOT ON IT KICK GOES DOWN ALL THE WAY
                                I TRIED CHOCK OR POWER BUTTON START BUT JUST KEEP GIVING ME THAT STARTER SOUND BUT BIKE IS NOT STARTING

                                I REQUEST YOU ALL TO PLEASE GUIDE REGARDING ISSUE I DRIVE BIKE VERY LESS BUT ON MAINTAINANCE SIDE I DONT COMPROMISE BUT YET I HAVE TO FACE SUCH ISSUE
                                HOPE ITS NOT BIG ISSUE !!!

                                thank you all for previous replies and future replies too
                                It could be stuck valve issue, which I've read in this forum happening with Hero/Honda engines. Try cranking the engine continuously using starter when this happens.
                                You may also try this tip from Sibun.
                                Hero Moto Splendor/Joy/CD-Dawn/Passion - xBhp.com : The Global Indian Biking Community
                                http://www.xbhp.com/talkies/motorcycle-ownership-experiences/8352-hero-moto-splendor-joy-cd-dawn-passion-291.html#post1070615
                                Share what you think about the motorcycle you own or have owned in the past.

                                Comment

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