Survey by Qualaroo
+ Reply to Thread
Page 5 of 12 FirstFirst ... 34567 ... LastLast
Results 81 to 100 of 235
Like Tree177Likes

Thread: Project Dhoom YD 70 Upgrade to 110cc

  1. #1
    Senior PakWheeler Follow
    asjdsm's Avatar
    Join Date
    Apr 2009
    Location
    Islamabad
    Age
    30
    Posts
    3,470
    Follows
    4
    Following
    0
    Mentioned
    57 Post(s)
    Tagged
    3 Thread(s)
    Problems Posted
    0
    Problems Solved
    1
    Best Answers
    0
    Good Answers
    0

    Question Project Dhoom YD 70 Upgrade to 110cc

    hi
    as the title suggests.. i have undertaken this small project.. so far i have made my bike partially ready.. here is what i have done so far..

    1:installed a 4 wheeler Cylinder of 107cc capacity
    2: and a corresponding Cylinder head..

    both the things were just bolt on fit.. no new timing chain was needed..
    i also upgraded to an after market china carburettor that comes for qingqi 100cc rickshaw.. did nothing to the jets ..mixture is a bit rich but proper setting is needed.current jets are unlabelled. however from spark plug reading mixture is in acceptable range...

    So far results are quite decent...pick is increased . very much..it reaches speeds of 80 in fairly short time..top speed is 90 but it severely vibrates past or close to speeds at 80. current sprockets are 14/41 default..
    UPDATE [17/06/2012]
    after i added the clutch box and sprocket was changed to 15/41 top speed is 100 and no vibrations..
    the new 110cc head is exactly the same as of the chonda 70 only difference is the size of combustion chamber which is slightly enlarged for the 52.4mm cylinder as opposed to the 48mm chamber of chonda 70.. The intake valve is 23mm and the exhaust valve is 20 mm.same values as of default cylinder head of dhoom 70. silencer is the same old of dhoom 70..


    Now i need suggestions/verifications as to what should i do to make it a bit faster.. in-fact not faster but to make the gears longer as at speeds above 60 (definitely in 4th gear) it seems as if it needs to be shifted to next gear..

    Now, one mechanic suggested me to use the following
    1: qinqgi clutch gear..and he said it costs 800-900 rs in new.. DONE
    2: and also to upgrade to 3 discs/plates clutch boxa...( infer for yourself
    what he meant.) DONE
    3:someone also suggested me to open the ports ( portain khuli kara lain) [To be done]
    4: replace the paper type filter element with a foam type ,, [To be done]
    will make a video about the project on what i have done so far.. in a couple of days. and rearrange this thread..

    also suggest a good mechanic..in pindi islamabad..

    thanks..
    ---------------------------------------------
    Some pics of the new cylinder head (110cc)
    This is the combustion chamber of 110cc cylinder..
    Project Dhoom YD 70 Upgrade to 110cc -287370


    Following pic show the scale next to the centre line of a 110cc combustion chamber ..my readings using vernier scale were as follows.
    the inner circle is of 40mm dia same as in dhoom 70 chamber
    the outer is of 52mm dia , 4mm bigger then the chamber of dhoom 70
    depth is same for both..at the center line..
    Project Dhoom YD 70 Upgrade to 110cc -287371

    vernier calliper showing the outer dia.
    Project Dhoom YD 70 Upgrade to 110cc -287372

    110cc cylinder installed.. along with a piston. the piston was partially seized but the mechanic who installed it said it is ok.. many mechanics also said so.. however rings were new. of STR.. the rings which i bought were for 150 rs and they were of zero number from united 100cc bike..(that bike in reality is a 110cc)
    Project Dhoom YD 70 Upgrade to 110cc -287373

    Piston at BDC of the cylinder.
    Project Dhoom YD 70 Upgrade to 110cc -287374

    another view of piston at BDC .
    Project Dhoom YD 70 Upgrade to 110cc -287381

    Piston at TDC. not the piston was flat shaped but there was too much compression.. so we tapper cut the piston.. that's why the piston looks pretty old at centre and clean at the edge... this pic was take after this piston did some 20 Km ...
    Project Dhoom YD 70 Upgrade to 110cc -287382

    Another View of Piston at TDC,
    Project Dhoom YD 70 Upgrade to 110cc -287383

    Picture of Exhaust port from cylinder head.. no silencer installed yet..
    Project Dhoom YD 70 Upgrade to 110cc -287384

    another view of the exhaust port of the cylinder , silence isn't installed yet..
    Project Dhoom YD 70 Upgrade to 110cc -287385

    Project Dhoom YD 70 Upgrade to 110cc -287386
    ---------------------------------------------


  2. #81
    Senior PakWheeler Follow
    asjdsm's Avatar
    Join Date
    Apr 2009
    Location
    Islamabad
    Age
    30
    Posts
    3,470
    Follows
    4
    Following
    0
    Mentioned
    57 Post(s)
    Tagged
    3 Thread(s)
    Problems Posted
    0
    Problems Solved
    1
    Best Answers
    0
    Good Answers
    0

    Default

    now three issues remain,,
    1: silencer
    2:air filter conversion from paper to foam type or all together a cone type filter
    3:last opening the ports

    please give suggestions,, your input is highly appreciated, i will put the port opening out of equation for the moment

  3. #82
    Senior PakWheeler Follow
    N0m1's Avatar
    Join Date
    Mar 2011
    Location
    Lahore
    Age
    22
    Posts
    2,056
    Follows
    0
    Following
    0
    Mentioned
    11 Post(s)
    Tagged
    3 Thread(s)
    Problems Posted
    1
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0

    Default

    @daniyalahmad,Bro u r absolutely right.
    Bat sirf top speed ki hi nahin bat ye hay k bike ktni dair main jati hay or us ka feel kesa hota hay.
    Jese k Ahsan Bhai ny kaha k Bike 80 km\h py bhi smooth hoti hay.
    I Am the Feel
    I Am The Yamaha!

  4. #83
    Senior PakWheeler Follow
    daniyalahmad's Avatar
    Join Date
    Jun 2009
    Location
    Select City
    Posts
    8,435
    Follows
    1
    Following
    0
    Mentioned
    12 Post(s)
    Tagged
    2 Thread(s)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0

    Default

    1: silencer
    Consult a good silencer fabricator.
    Tell him your requirements, however do note that getting a silencer with too much free flow is not a good option.
    Get a silencer that creates some pressure for the exhaust gasses.
    Too much free flow and engine will have decreased back pressure.
    Do note that their should be a decent equilibrium in your intake and exhaust.

    2:air filter conversion from paper to foam type or all together a cone type filter
    Which air filter are you referring to?
    Post some pictures of it.

    3:last opening the ports
    Which ports?
    One of the most difficult things in the world is to know how to do something, and to watch without comment, somebody else do it incorrectly.

  5. #84
    Senior PakWheeler Follow
    asjdsm's Avatar
    Join Date
    Apr 2009
    Location
    Islamabad
    Age
    30
    Posts
    3,470
    Follows
    4
    Following
    0
    Mentioned
    57 Post(s)
    Tagged
    3 Thread(s)
    Problems Posted
    0
    Problems Solved
    1
    Best Answers
    0
    Good Answers
    0

    Default

    this is the filter
    http://img.alibaba.com/wsphoto/v0/47...pg_200x200.jpg

    ports means ports of cylinder head.. intake and exhaust..
    as there are a lot of casting flaws so fine tuning them would be a good option...isnt it ?

    can u tell me where in pindi or which is the goot fabricator of silencers ?
    where do they sit ? bhabra bazar ?

  6. #85
    Senior PakWheeler Follow
    daniyalahmad's Avatar
    Join Date
    Jun 2009
    Location
    Select City
    Posts
    8,435
    Follows
    1
    Following
    0
    Mentioned
    12 Post(s)
    Tagged
    2 Thread(s)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0

    Default

    ^ This looks like a breather to me.
    Not sure though.

    Dont know much about opening the inlet and exhaust port.
    I would reccomend you to stay away from this mod untill you are damn sure about what you are doing.
    You might end up ruining your cylinder.

    Regarding silencer fabricator I know one guy who makes silencers of bikes that are Army/Police auctioned and have undergone complete restoration.
    I'll give you his adress.
    A couple of years back I went to his shop but now I dont remember it.
    Will get the adress for you.
    One of the most difficult things in the world is to know how to do something, and to watch without comment, somebody else do it incorrectly.

  7. #86
    Senior PakWheeler Follow
    overspeed111's Avatar
    Join Date
    Apr 2010
    Location
    Islamabad
    Posts
    1,176
    Follows
    0
    Following
    1
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0

    Default

    good going ahsan bhai...
    bro also mention the prices of parts changed in original engine and labor of it...
    looking forward to your project...
    a nice diy will be coming soon from my side too...best of luck...
    .....

  8. #87
    Senior PakWheeler Follow
    asjdsm's Avatar
    Join Date
    Apr 2009
    Location
    Islamabad
    Age
    30
    Posts
    3,470
    Follows
    4
    Following
    0
    Mentioned
    57 Post(s)
    Tagged
    3 Thread(s)
    Problems Posted
    0
    Problems Solved
    1
    Best Answers
    0
    Good Answers
    0

    Default

    so far i have mentioned all the prices,,and other charges,,as well as the reasons for those choices,, any further query welcomed

  9. #88
    Senior PakWheeler Follow
    asjdsm's Avatar
    Join Date
    Apr 2009
    Location
    Islamabad
    Age
    30
    Posts
    3,470
    Follows
    4
    Following
    0
    Mentioned
    57 Post(s)
    Tagged
    3 Thread(s)
    Problems Posted
    0
    Problems Solved
    1
    Best Answers
    0
    Good Answers
    0

    Default

    Quote Originally Posted by daniyalahmad View Post
    ^ This looks like a breather to me.
    Not sure though.

    Dont know much about opening the inlet and exhaust port.
    I would reccomend you to stay away from this mod untill you are damn sure about what you are doing.
    You might end up ruining your cylinder.

    Regarding silencer fabricator I know one guy who makes silencers of bikes that are Army/Police auctioned and have undergone complete restoration.
    I'll give you his adress.
    A couple of years back I went to his shop but now I dont remember it.
    Will get the adress for you.
    the port opening thing will be done by khradia,,
    can u recomend a good kharadia in pindi?
    i thnk the mohamdi kharadi is good in pindi, i have seen their other works,,, better then those in khadda market ppl,

    waiting for silencer mechanic address,,

  10. #89
    Senior PakWheeler Follow
    hidalgo's Avatar
    Join Date
    Mar 2011
    Location
    Rawalpindi
    Age
    26
    Posts
    6,627
    Follows
    2
    Following
    0
    Mentioned
    148 Post(s)
    Tagged
    16 Thread(s)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0

    Default

    ahsan bhai you talking about exhaust ports???
    this filter is like free flow kind ov thingy have seen it on few 125 s
    legend will revive soon

  11. #90
    Senior PakWheeler Follow
    asjdsm's Avatar
    Join Date
    Apr 2009
    Location
    Islamabad
    Age
    30
    Posts
    3,470
    Follows
    4
    Following
    0
    Mentioned
    57 Post(s)
    Tagged
    3 Thread(s)
    Problems Posted
    0
    Problems Solved
    1
    Best Answers
    0
    Good Answers
    0

    Default

    yes its also mentioned by the name of f ree flow,,many names,,some call it power filter,,
    i would like to open both ports,, roughen inlet port to better atomize fuel. and polish the exhaust port in order to avoid accumulation of carbon,,

  12. #91
    Senior PakWheeler Follow
    daniyalahmad's Avatar
    Join Date
    Jun 2009
    Location
    Select City
    Posts
    8,435
    Follows
    1
    Following
    0
    Mentioned
    12 Post(s)
    Tagged
    2 Thread(s)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0

    Default

    Quote Originally Posted by asjdsm View Post
    the port opening thing will be done by khradia,,
    can u recomend a good kharadia in pindi?
    i thnk the mohamdi kharadi is good in pindi, i have seen their other works,,, better then those in khadda market ppl,

    waiting for silencer mechanic address,,
    The one at Commitee chowk in the lane, near the Old book house and PM Ice-dream wala is good.
    However insist to get your work done by the ustaad.

    The silencer guy's name is Ghaffar.
    His shop is in Gawalmandi kumharon ka mohalla near the mazaar of Baba gee Ziarat.
    He is expensive.
    So try to negotiate as much as possible.
    You can give him the refrence of my mechanic i-e Bashir Ustaad (Pak Automobiles)
    His contact number is 03455312970
    One of the most difficult things in the world is to know how to do something, and to watch without comment, somebody else do it incorrectly.

  13. #92
    Senior PakWheeler Follow
    asjdsm's Avatar
    Join Date
    Apr 2009
    Location
    Islamabad
    Age
    30
    Posts
    3,470
    Follows
    4
    Following
    0
    Mentioned
    57 Post(s)
    Tagged
    3 Thread(s)
    Problems Posted
    0
    Problems Solved
    1
    Best Answers
    0
    Good Answers
    0

    Default

    ^^ can u tell me how much is the total cost of making the silencer from that guy?
    after market are available for 500 max,, how would be his quality of work and materials,,
    would he have a sample ?

  14. #93
    Senior PakWheeler Follow
    daniyalahmad's Avatar
    Join Date
    Jun 2009
    Location
    Select City
    Posts
    8,435
    Follows
    1
    Following
    0
    Mentioned
    12 Post(s)
    Tagged
    2 Thread(s)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0

    Default

    ^ Cant say.
    I never got any silencer made by him.
    Do tell me what does he demands.
    One of the most difficult things in the world is to know how to do something, and to watch without comment, somebody else do it incorrectly.

  15. #94
    FC
    FC is offline
    Senior PakWheeler Follow
    FC's Avatar
    Join Date
    Sep 2008
    Posts
    3,376
    Follows
    2
    Following
    0
    Mentioned
    13 Post(s)
    Tagged
    0 Thread(s)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0

    Default

    @asjdm
    for ur all questions here is the answer

    1) Clutch Gear.
    Always make the ride from clutch gear for shoot purpose only... agr clutch
    gear say bike long hogi to in result 4th gear will lower the speed put
    SOHRAB clutch gear one tooth less then genuine clutch gear..

    2) Bigger inlet port
    If u increase the bore of inlet port so in result more fuel air will flow but
    itny chotay say head mein combustion kaisy karo *** itni zyadah us kay
    liyay u hv to increase the current too... Bigger the SPARK more the power.

    3) CLutch Box
    If u change the clutch box to 3 plates in result u will get a hard clutch
    better clutchng nthng else..

    4) If u want more power then simply bore SD-110 piston put Steel valves hard Valve spring 125cdi carb. without air filter and match the sprockets then u will feel the power of ur ride.... MAximum speed that we got from this alteration is 135km\h but the setting of carb. and sprocket plays the important role
    My Vehicle is an ALL MOTOR. Seriously, Who needs a turbo when u have a Stupidly Quick Naturally Aspirated Motor???? Real Motors don't need Forced Induction. EG for life

  16. #95
    Senior PakWheeler Follow
    asjdsm's Avatar
    Join Date
    Apr 2009
    Location
    Islamabad
    Age
    30
    Posts
    3,470
    Follows
    4
    Following
    0
    Mentioned
    57 Post(s)
    Tagged
    3 Thread(s)
    Problems Posted
    0
    Problems Solved
    1
    Best Answers
    0
    Good Answers
    0

    Default

    as of now my bike has a 110cc cylinder with a flat piston,,
    its effective cc is 107cc,, i also have the corresponding head of a 110cc bike,
    it has qingqi clutch box of 3 plates,
    it also has qingqi clutch gears of 65/20 teeth
    its carburetor is an aftermarket qingqi carb,,
    sprockets are 15/41
    top speed achieved so far is 100km/hr,
    mileage is 45 km/ltr if i ride it hash,,

    so what are the tooth ratio of sohrab bike clutch gears?
    what is the shape of sd 110 piston,, kia sd 110 sa ap ka murad suzuki sprinter ha,, kiona main jab bhi pochtha houn wo yahi boltha hain,,shape sa mera murad kia ya fla ha top sa ya doomed shape hay?



    steel valves and hard springs ka ma na pocha tha but the shopkeepers her seem clueless abou it..
    please can u mention its price? and tell me its desi names,, these shopkeepers dont know it,,

    another thing is that i will be ridoing it in city so very diret air most of time and here islamabad has many sandy winds so filterless ride is very detrimental to bike ,, ok leave this issue for a while,, so will take the carb issue in the last,,, as 125 carb cannot be adopted to the 70 lota,,

    which silencer to use?
    can u post a pic of a silencer that u recomend?

    and ports k muchanics kahthay hain kafi farq parth hay,,,kholnay sa,, 1-2mm,,,

    how is ur beauty running ? jo bari hokay 125 ban *** thi,, cd 70 sa

  17. #96
    FC
    FC is offline
    Senior PakWheeler Follow
    FC's Avatar
    Join Date
    Sep 2008
    Posts
    3,376
    Follows
    2
    Following
    0
    Mentioned
    13 Post(s)
    Tagged
    0 Thread(s)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0

    Default

    yar dkho accrdng to my experience engine say shoot banao aur sprocket say long 20-65 bht lambay root par apni motion banati hai... Engine makes slowly slowly motion after 90km\h and fix the gear motion at 100 or 105km\h... Engine RPM increase karo us ki rotation ko mat chero...

    STEEL VALVES ka btata hun... In mchanic zaban WALL
    Mechanic ko bolo is ka head KARAK karay Head Karak karny mein VALVE spring Genuine springs say hard daltay hain ar spring kay neechay CD 70 ki valve washer rakhty hain... Gasket kitny MM ki banwai hai piston ka top face kitna MM karwaya hai??? Yar 107 kay head ka bore bara karwanay ka faida nahein hai.... Carb. tum qinqi ka chala rahy ho us kay jet ka size 87 hai bhai jitna jet petrol day ga utna hi head mein jaay ga na us kay baad us ki SLIGHT choti hai bike kis had tak acelarte karay gi ???

    SIMPLE FORMULA is this

    MORE FUEL MORE AIR with BIGG SPARK Generates the power

    IN UR CASE

    MORE FUEL MORE AIR with LESS SPARK kahn say power generate ho gi ???


    MERI BEAUTY TO runing very well MASHALLAH

    its specs are
    124 head with alteration
    140cm cylinder
    CG 150n piston
    124 Oil pump Piece
    CD 100 Gears
    70 Genuine Clutch Gear
    70 Genuine clutch box
    124 weight wd alteration.. STROKE uthwaya hai
    Fuel pump carb. of 250cc
    16-27 Sprocket matchng
    MAGNET, coil kara, CDI and Plug Coil of 96 125 Japnese

    Lay aao koi Suzuki GS150 or Honda CG 125 pata chal jaay ga kay bike kya chal rahi hai
    My Vehicle is an ALL MOTOR. Seriously, Who needs a turbo when u have a Stupidly Quick Naturally Aspirated Motor???? Real Motors don't need Forced Induction. EG for life

  18. #97
    Senior PakWheeler Follow
    asjdsm's Avatar
    Join Date
    Apr 2009
    Location
    Islamabad
    Age
    30
    Posts
    3,470
    Follows
    4
    Following
    0
    Mentioned
    57 Post(s)
    Tagged
    3 Thread(s)
    Problems Posted
    0
    Problems Solved
    1
    Best Answers
    0
    Good Answers
    0

    Default

    Quote Originally Posted by FC View Post
    yar dkho accrdng to my experience engine say shoot banao aur sprocket say long 20-65 bht lambay root par apni motion banati hai... Engine makes slowly slowly motion after 90km\h and fix the gear motion at 100 or 105km\h... Engine RPM increase karo us ki rotation ko mat chero...

    STEEL VALVES ka btata hun... In mchanic zaban WALL
    Mechanic ko bolo is ka head KARAK karay Head Karak karny mein VALVE spring Genuine springs say hard daltay hain ar spring kay neechay CD 70 ki valve washer rakhty hain... Gasket kitny MM ki banwai hai piston ka top face kitna MM karwaya hai??? Yar 107 kay head ka bore bara karwanay ka faida nahein hai.... Carb. tum qinqi ka chala rahy ho us kay jet ka size 87 hai bhai jitna jet petrol day ga utna hi head mein jaay ga na us kay baad us ki SLIGHT choti hai bike kis had tak acelarte karay gi ???

    SIMPLE FORMULA is this

    MORE FUEL MORE AIR with BIGG SPARK Generates the power

    IN UR CASE

    MORE FUEL MORE AIR with LESS SPARK kahn say power generate ho gi ???


    MERI BEAUTY TO runing very well MASHALLAH

    its specs are
    124 head with alteration
    140cm cylinder
    CG 150n piston
    124 Oil pump Piece
    CD 100 Gears
    70 Genuine Clutch Gear
    70 Genuine clutch box
    124 weight wd alteration.. STROKE uthwaya hai
    Fuel pump carb. of 250cc
    16-27 Sprocket matchng
    MAGNET, coil kara, CDI and Plug Coil of 96 125 Japnese

    Lay aao koi Suzuki GS150 or Honda CG 125 pata chal jaay ga kay bike kya chal rahi hai
    seems pretty promising settings, but wat about the silencer? r u using stock..?

  19. #98
    Senior PakWheeler Follow
    daniyalahmad's Avatar
    Join Date
    Jun 2009
    Location
    Select City
    Posts
    8,435
    Follows
    1
    Following
    0
    Mentioned
    12 Post(s)
    Tagged
    2 Thread(s)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0

    Default

    ^ Not sure but I think he was using the KK brand silencer that came in pre-84 model CD,s.
    One of the most difficult things in the world is to know how to do something, and to watch without comment, somebody else do it incorrectly.

  20. #99
    FC
    FC is offline
    Senior PakWheeler Follow
    FC's Avatar
    Join Date
    Sep 2008
    Posts
    3,376
    Follows
    2
    Following
    0
    Mentioned
    13 Post(s)
    Tagged
    0 Thread(s)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0

    Default

    @DANU
    nopes i m not using KK silencer... I m using the FOXY silencer on it
    My Vehicle is an ALL MOTOR. Seriously, Who needs a turbo when u have a Stupidly Quick Naturally Aspirated Motor???? Real Motors don't need Forced Induction. EG for life

  21. #100
    Senior PakWheeler Follow
    asjdsm's Avatar
    Join Date
    Apr 2009
    Location
    Islamabad
    Age
    30
    Posts
    3,470
    Follows
    4
    Following
    0
    Mentioned
    57 Post(s)
    Tagged
    3 Thread(s)
    Problems Posted
    0
    Problems Solved
    1
    Best Answers
    0
    Good Answers
    0

    Default

    now thats one such interesting fact,, when will we get a pictorial overviuew of it?

    also suggest a good silencer to me,,
    wat r hyderabadi silencers?
    and what r ur views about the 500-800 rs silencers,, ppl say they destroy ur enginw? how is it true? please share any knowledge about it,,

+ Reply to Thread
Page 5 of 12 FirstFirst ... 34567 ... LastLast

User Tag List

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •