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Thread: Hero Moto Splendor/Joy/CD-Dawn/Passion

  1. #521
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    (Pic taken from Mr. Pinaki)

    I have removed the rubber small air flow pipe situated in the upper right corner of the airbox (shown in red circle) for better air flow keeping the stock air filter intact. Can i get minute increase in performance and will this affect the engine. My bike clocked 154032 km and I am getting mileage around 67-69 km/ltr and it can touch around 91 kmph. Thank you.
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    Default Poll..

    Congratulations to owners of world's largest seller !!

    Please quote your max. speed attended on Splendor
    ....I do know it's not a speed m/c....but I have seen a splendor overtaking my swift when my car was at 95 kmph...and that too with pillion !!!

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    Quote Originally Posted by prosi9 View Post

    (Pic taken from Mr. Pinaki)

    I have removed the rubber small air flow pipe situated in the upper right corner of the airbox (shown in red circle) for better air flow keeping the stock air filter intact. Can i get minute increase in performance and will this affect the engine. My bike clocked 154032 km and I am getting mileage around 67-69 km/ltr and it can touch around 91 kmph. Thank you.
    If you remove the snorkel, then theres a chance than water may enter during heavy rains, my friend removed it on his Hunk and there was a noticeable change in the intake note, cant commend on performance though. And you can expect an increase in mileage, since the AFR will be abit lean after you remove it.
    Motorcycling Experience:
    2000 ~ 2017 Y2K Kinetic Zoom (Disposed at 15k)
    2011 ~ 2015 Hero Honda Karizma R (Sold at 56.5k)
    2013 ~ 2014 Bajaj Discover 100 4G (Sold at 16.5k)
    2015 ~ 2017 TVS Wego (Totaled at 18k)
    2015 - Bajaj Pulsar 220F (Currently 31k) < Garage Queen!
    2017 - Bajaj CT100B (Currently 21k) < 'Golden Quadrilateral' Runner!

    The Ride was Good, but Life is short, spend it Wisely!
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    Quote Originally Posted by shoeb2015 View Post
    Today evening I had opened clutch cover to clean the centrifugal filter but ....
    Pics please .

    Quote Originally Posted by prosi9 View Post
    ...I have removed the rubber small air flow pipe situated in the upper right corner of the airbox (shown in red circle) for better air flow keeping the stock air filter intact. Can i get minute increase in performance and will this affect the engine. My bike clocked 154032 km and I am getting mileage around 67-69 km/ltr and it can touch around 91 kmph. Thank you.
    You can experiment with it ... no harm to engine, but don't use the bike like this in monsoon(or during a water wash) ; that snorkel is essential to keep water out of the air-filter box .
    Mine is running 60-61 kmpl only in summer because my run is low and irregular now (because of the heat) and evaporation loss is considerable in these sunny days . I used just a liter this last week .Yours is one of the earlier splendors , the best ones ... before they had to tinker with the engine to meet the BS pollution norms . Haven't tried this bike above 70kmph yet , mainly because I use it for local runabouts and office going (sometimes) and I am scared to take any bike above 70 nowadays on kolkata roads ... too risky .
    Last edited by Pinaki; 06-16-2012 at 12:20 AM.

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    Quote Originally Posted by vipin_s View Post
    Congratulations to owners of world's largest seller !!

    Please quote your max. speed attended on Splendor
    ....I do know it's not a speed m/c....but I have seen a splendor overtaking my swift when my car was at 95 kmph...and that too with pillion !!!
    Many think that splendor series engine are worst in performance. many have not seen the performance and still they give their opinion that it doesn't perform good.
    i haven't tested splendor top speed but has touched 90 kmph with ease.
    mine is hero honda joy(2001) which although has same series engine as splendor has slightly more power and torque. so it has a 42 teeth rear sprocket and thicker tyre.splendor has 43 teeth rear sprocket. my bike easily touches 110 kph even when it has run 3.1 lacs km. with 2 up it touches 105 kph. so a splendor can touch 100 with single or double. my joy has touched 110 more than 30 times and almost once in a week touches 95-100 while going to work.
    i also own a cbz extreme and i know it can breach the 120 mark easily but till now i haven't seen any bike which has so good performance as splendor series(joy,splendor,passion,e.t.c) .
    on NH i have surprised some of the 125cc guys with my joy and 2 riders on next traffic stop have asked if it is some new 125 from hero honda because 99.9% haven't heard of joy and i maintain my bike in such a way that it looks like it just came from showroom. so a splendor crossing your swift at 95 kph is no surprise feat.
    some day i will try to post a video if i will be able to shoot.
    Photo of my joy- http://www.xbhp.com/talkies/854067-post963.html-3.88 lac km cont....Ownership review of my joy- http://www.xbhp.com/talkies/832255-post608.html- slowly updating as and when getting time. HERO HONDA CBZ EXTREME(2011) - 47K KM AND COUNTINGhttp://www.xbhp.com/talkies/motorcyc...tml#post904152-carb tuning guide

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    Quote Originally Posted by ashwinprakas View Post
    If you remove the snorkel, then theres a chance than water may enter during heavy rains, my friend removed it on his Hunk and there was a noticeable change in the intake note, cant commend on performance though. And you can expect an increase in mileage, since the AFR will be abit lean after you remove it.
    Yes, I can hear the intake note in the mid RPM and after cleaning the air filter I can feel slight increase in acceleration. Today I opened the ngk spark plug for a cleanup I noticed the spark tip is light brownish in colour and no carbon deposits on it. Is the light brownish colour is due to lean air fuel ratio mixture?
    [SIGPIC][/SIGPIC]
    Ride hard, stay alive....

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    Quote Originally Posted by Pinaki View Post
    Pics please .

    You can experiment with it ... no harm to engine, but don't use the bike like this in monsoon(or during a water wash) ; that snorkel is essential to keep water out of the air-filter box .
    Mine is running 60-61 kmpl only in summer because my run is low and irregular now (because of the heat) and evaporation loss is considerable in these sunny days . I used just a liter this last week .Yours is one of the earlier splendors , the best ones ... before they had to tinker with the engine to meet the BS pollution norms . Haven't tried this bike above 70kmph yet , mainly because I use it for local runabouts and office going (sometimes) and I am scared to take any bike above 70 nowadays on kolkata roads ... too risky .
    Yes, nowadays getting a speed above 70 is quite a dangerous in Kolkata as number of 4-wheeler was increasing day by day. It is also dangerous because of those people who don't take care by looking out for vehicle while crossing the road and they simply run to do it and when suddenly a vehicle come toward them, then they become confused and start a circus juggling in the middle of the road.
    [SIGPIC][/SIGPIC]
    Ride hard, stay alive....

  8. #528
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    Finally this post is up and i will post how to change the bore piston kit so that the performance of your bike is good.
    First let me come to my problem which prompted me to open the bore.
    The problem were as follows:-
    1. From February this year the mileage suddenly decreased to 68 k pl from 78 k pl and no amount of servicing would increase the mileage.
    2. On DE-acceleration there was a slight ringing noise which indicated that the rings were not sitting properly and was vibrating in their grooves.
    3. Just two months ago the engine was opened and con-rod was replaced but bore was good so was only honed but we made the mistake of not changing the rings.
    4. The engine was loosing compression once hot and the tuning was rising to 2000 rpm when hot.
    5. Valve leakage was not detected as the engine was not showing any problem when cold and the kick was also tight indicating valve seating is correct.
    6. During last few days the mileage decreased to 55 kpl.
    So here are the the procedure.
    For opening the head follow the following procedure:-
    1. Open the right side panel and open the nut holding the rear footrest bracket.
    2. open the center nut which is holding the silencer. do not force the silencer to open.
    3. open the two silencer nut from the silencer mouth located at bottom of head.Now remove the silencer.
    4. open the carburettor cover(black cover under the tank) and remove the bolt holding the intake manifold to carburettor.
    5. Open the gear lever and magnet cover.
    6. Open the air injection unit.
    7. Open the timing cover and match the timing by placing the magnet T mark against the casing mark and also seeing the mark on the timing sprocket matches with the head mark. Now open the two small nut on the timing sprocket and remove the sprocket.
    Now open the small bolt holding the head at the side just besides the timing cap and then open the 4 head bolts in crisscross pattern. Remember always open the side bolt first and then the top bolts.

    Many confusion are there on xbhp on tuning of carburettor. See the tuning from the spark plug-

    The timing mark matched to mark on engine casing:-

    The head bolt removed and the intake manifold removed from carburettor-



    You can see the carbon deposits in the above picture.The o-ring present in the oil return gallery is responsible for stopping engine oil from entering combustion chamber. If it gets damaged the bike will smoke like 2 strokes.

    The picture is self explanatory. You can check the exhaust valve by opening the spark plug and focus torch through the hole. Now slowly rotate the engine by shifting the gear to first and moving the rear wheel on main stand. You will not have any difficulty as there is no spark plug so the compression is nil. After rotating for about half rotation you will see the exhaust valve will rise. Now look it in torch light and you can see the color.If the valve is red then there is nothing to worry as tuning is correct and petrol is also of good quality.

    The old bore was worn at one side. So it took the shape of an oval and thus the rings were floating without touching the bore at on side and touching other three side. The ring gap was 0.5 mm and was same for top, middle and bottom. The problem was not with gap but with bore being outof round.

    We were inserting the piston and ring to check the ovality of bore but my mechanic came and just gave a look to bore and told exactly where the bore has worn. Now you know what 20 years of experience mean.The bore was worn in this way because the clutch side of the crank-pin was worn and thus the con-rod was giving more thrust to that side.

    The splendor and joy piston are placed. Joy piston has larger skirt and also landing for absorbing thrust of combustion force. You can fit the joy piston in splendor but cannot do the reverse as it will cause rapid bore wear and rattling of piston in bore.

    The DID timing chain which cost Rs.174 and the OE chain cost Rs.100. If you cannot find DID then go for Rolon or Diamond but do not go for OE.


    This the USHA bore kit.
    Why i went for USHA bore kit?
    The first time i went for engine rebuilt was at 1.24 lacs km. At that time i bought a OE kit which had USHA liner and piston. The bore kit ran for another 1.20 lacs Km and while opening there was no smoke and the bike was returning a mileage of 70 kpl. During the tenure of this bore The bike sometimes used to return 100 kpl on NH and also touched 110 Kph effortlessly. AT 2.44 lacs another engine overhaul was done and OE bore kit was used but it had piston of SAL. The bike started consuming oil with new piston and when the head was opened after 1000 km at first service the combustion chamber was full of oil. Then again oversize ring was ground and fitted.The bike ran for 20k and seized. Then the bore was bored and MAHLE piston was used. That ASS**** made the clearance so less that when heated the engine will not idle as the piston was expanding and jamming the bore.The bore lasted for 30k and this time i decided USHA bore as i had previous experience with USHA and also the piston is semi-forged and silicon mixed so it resist thermal expansion.



    The valve are lapped using hand. I never go for machine lapping as in lathe and instead lap with hand which gives superior results.

    The USHA bore liner is so smoothly polished that there is no risk of seizure. Moreover you can see the liner mark is not there as in OE bore and it is seamlessly fixed with the casting thus allowing better heat transfer.

    The usha piston is made in honda foundry, Japan.The rings are supplied by Riken, Japan. The OE piston set cost only Rs.450 but USHA piston set cost Rs. 750. So you can imagine the quality difference.






    Difference after bore fitting:-
    Since we regularly use our bike we do not notice how much gradually the performance is decreasing.
    After fitting the bore the low end torque has increased and the bike is eager to pull wheelies. IN my joy the low end torque is so good that even if the engine will be idling at 1000 rpm if you slowly release the clutch in first gear it will pull without touching the accelerator. This was missing which gained after bore was changed.
    Difference in USHA bore-
    Even though the ring gap is so less and the piston is tight then also the bike feels free unlike in OE kit where we have to run it for freeing the engine.
    Last edited by sibun; 06-17-2012 at 04:07 PM.
    dumb0 likes this.
    Photo of my joy- http://www.xbhp.com/talkies/854067-post963.html-3.88 lac km cont....Ownership review of my joy- http://www.xbhp.com/talkies/832255-post608.html- slowly updating as and when getting time. HERO HONDA CBZ EXTREME(2011) - 47K KM AND COUNTINGhttp://www.xbhp.com/talkies/motorcyc...tml#post904152-carb tuning guide

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    Quote Originally Posted by Pinaki View Post
    You can experiment with it ... no harm to engine, but don't use the bike like this in monsoon(or during a water wash) ; that snorkel is essential to keep water out of the air-filter box .
    OT : Pinaki ji that pipe inside my ZMR is chewed by rabbit & now it has only lower part , should i replace it ? The SVC guys said no problem with it , it would be good as bike will get more air supply .

    @ sibun very informative post , when you post all details , try if you can put it inside a pdf , come handy when offline .

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    Quote Originally Posted by Above_All View Post
    OT : Pinaki ji that pipe inside my ZMR is chewed by rabbit & now it has only lower part , should i replace it ? The SVC guys said no problem with it , it would be good as bike will get more air supply .

    @ sibun very informative post , when you post all details , try if you can put it inside a pdf , come handy when offline .
    There is no problem with that. Usually it is located under seat and water doesn't get in there. But if you want replace it. I don't get the logic that it allows more air in. the air flow is restricted by air filter. so even if you remove it then also it doesn't give any appreciable difference.
    I can put it in pdf but how to convert it into pdf.
    Photo of my joy- http://www.xbhp.com/talkies/854067-post963.html-3.88 lac km cont....Ownership review of my joy- http://www.xbhp.com/talkies/832255-post608.html- slowly updating as and when getting time. HERO HONDA CBZ EXTREME(2011) - 47K KM AND COUNTINGhttp://www.xbhp.com/talkies/motorcyc...tml#post904152-carb tuning guide

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