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Thread: Restoring Yamaha 100cc (YB100, model:1980)

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    Smile Restoring Yamaha 100cc (YB100, model:1980)

    Hi everyone,

    I have decided to restore my dad's old YB100. It has been lying around in the garage for 10 years or so. I would also like to mention that I have absolute ZERO experience regarding bikes or engines and not even remotely related to those, this is my first ever project.

    PS: Since I am a bit busy with my own projects, the progress on this is going to be a bit slow (probably only weekends). And this project can even fail due my lack of experience !


    OK enough talk, let's get started:

    Original condition: The bike appears to be in a pretty bad shape:

    Restoring Yamaha 100cc (YB100, model:1980) - 8685650134 9507a2cc25 b


    Special thanks: I would like to thank our respected pakwheels member @
    vickytulla (Waqar) for the much needed initial guidance.


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    Quote Originally Posted by gorkan View Post
    this one can be a good wallpaper
    Here you go, 2000x1330 res version:

    http://farm6.staticflickr.com/5550/9139651081_86dca135c4_o.jpg

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    Quote Originally Posted by vickytulla View Post
    Engine turns out to be in a Good shape from Inside though.. only need new Clutch plates and through cleaning...
    Well I can't say yet. I haven't started properly analysing the individual parts as yet. I think I saw some damage marks on a spring somewhere, and some misalignment issues too. I maybe wrong but something like this:

    9137179215_88a4ec3d6d_o.jpg

    I will check these issues in great detail once i disassemble everything and clean it.

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    Quote Originally Posted by aximaxim View Post
    Dismantle everything, and steam clean it. It will save a lot of your time and effort to scrub off the gunk and slimy residue oil. All you have to to is to built a make shift steamer at home. 1. What I did was find the biggest sauce pan (Daikchi) at home, 2. fill it 3-5 inches with a solution of water and bleach (20:1) ratio roughly would do the job. 3. Place a strainer inside the sauce pan and your engine parts on the strainer so that the parts dont submerge in the solution. 4. Switch on the stove and Steam clean it for 2 hours and voila the parts will be as clean as they can get.Note: (dont inhale the fumes as bleached water vapors will harm your lungs)
    Kinds of gunk I saw in the engine:

    1) The slimy pulpy green stuff: (somewhere maybe brown due to mixing of rust)

    http://farm9.staticflickr.com/8553/8...099d990e_b.jpg

    This is basically oil. Relatively easy to clean up, also not very harmful.

    2) the "fungus" like stuff:

    http://farm9.staticflickr.com/8279/8...7dbef666_b.jpg

    This is oxidised aluminium. SUPER TOXIC ! Be EXTREMELY careful while cleaning this stuff.

    As you said the water + bleach mixture is toxic, then I probably won't be able to use your recommended method of cleaning the parts. My family and neighbours won't like me after that. They will probably call the police ! Even if they don't it is not ethical to give them lung cancer or something

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    Quote Originally Posted by fakhir View Post
    cool, thanks

    It's looks good with the current theme of my u12.10
    “Have you ever noticed? Anybody going slower than you is an idiot, and anyone going faster than you is a maniac”

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    *Fakhir: Bro I need your help, I am working on the same project but my brand is Kawasaki so can you plz tell me from where did you get the repair/service manual as I am need of it!

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    Quote Originally Posted by fakhir View Post
    Kinds of gunk I saw in the engine:

    1) The slimy pulpy green stuff: (somewhere maybe brown due to mixing of rust)

    http://farm9.staticflickr.com/8553/8...099d990e_b.jpg

    This is basically oil. Relatively easy to clean up, also not very harmful.

    2) the "fungus" like stuff:

    http://farm9.staticflickr.com/8279/8...7dbef666_b.jpg

    This is oxidised aluminium. SUPER TOXIC ! Be EXTREMELY careful while cleaning this stuff.

    As you said the water + bleach mixture is toxic, then I probably won't be able to use your recommended method of cleaning the parts. My family and neighbours won't like me after that. They will probably call the police ! Even if they don't it is not ethical to give them lung cancer or something
    Plain water will also do the job if you are worried about bleach. I didn't had to worry about this because our kitchen has quite heavy duty exhaust system
    I saw this steamer thing on the Discovery channel Show "A Car is Born" where Mark Evan (the restorer) used this steamer to clean engine parts. I made a make shift one for myself when I was working on my car.
    Bikes don't leak oil, they mark their territory.

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    mention your brand model .. hope someone will give some clue in right direction
    Quote Originally Posted by abdul_basit007 View Post
    *Fakhir: Bro I need your help, I am working on the same project but my brand is Kawasaki so can you plz tell me from where did you get the repair/service manual as I am need of it!

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    Wolla!!!
    Its nice to see nice & genuine yb100 stuff.I have same wide sprocket clutch box in my yb.
    I Am the Feel
    I Am The Yamaha!

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    Quote Originally Posted by abdul_basit007 View Post
    *Fakhir: Bro I need your help, I am working on the same project but my brand is Kawasaki so can you plz tell me from where did you get the repair/service manual as I am need of it!
    Well try searching out google. Loads of manuals easily available in PDF format and for FREE. You can even ask for specific manuals in relevant threads on Pakwheels. That is exactly what I did

    I found Haynes manuals (not beans) to be pretty good!

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    hope you will open it up in coming few months............just boost it up man............
    few pics for your interest.........hope you like it
    Attached Images Attached Images    
    ***SPEED+ACCURACY+AGGRESSION=YAMAHA RX115***

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    Lovely thats like giving RedBull to @fakhir

    Quote Originally Posted by RX115 View Post
    hope you will open it up in coming few months............just boost it up man............
    few pics for your interest.........hope you like it
    https://www.pakwheels.com/forums/motorcycle-travel-diaries/277725-sober-riders-visit-khunjerab-adventurous-way-via-nori-pass

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    Quote Originally Posted by aximaxim View Post
    Dismantle everything, and steam clean it. It will save a lot of your time and effort to scrub off the gunk and slimy residue oil. All you have to to is to built a make shift steamer at home.
    1. What I did was find the biggest sauce pan (Daikchi) at home,
    2. fill it 3-5 inches with a solution of water and bleach (20:1) ratio roughly would do the job.
    3. Place a strainer inside the sauce pan and your engine parts on the strainer so that the parts dont submerge in the solution.
    4. Switch on the stove and Steam clean it for 2 hours and voila the parts will be as clean as they can get.

    Note: (dont inhale the fumes as bleached water vapors will harm your lungs)
    it will also hurt the parts, the best way is to get some small tubs, fill one half way with ATF and fill one with a mix of petrol+kerosene, dunk the parts in ATF so it can remove some oil and soften it too (ATF is a great cleaner) after a few hours, dunk the parts in the petrol/kero mix.

    Steam cleaning is best done on engine parts with a pressure nozzle. It melts away all grime - for that find a service station who has a proper high pressure unit, ask them for a time of when they can start the diesel heater in it, get it really hot and have them hlast away on the parts.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    Quote Originally Posted by asjdsm View Post
    mention your brand model .. hope someone will give some clue in right direction
    Bro! My project is Kawasaki GTO 100! If someone have the link or service manual, please provide me!

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    Quote Originally Posted by RX115 View Post
    hope you will open it up in coming few months............just boost it up man............
    few pics for your interest.........hope you like it
    Well this is amazing. How did you paint the tank with all the original graphics and how much did it cost?

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    Quote Originally Posted by Xulfiqar View Post
    it will also hurt the parts, the best way is to get some small tubs, fill one half way with ATF and fill one with a mix of petrol+kerosene, dunk the parts in ATF so it can remove some oil and soften it too (ATF is a great cleaner) after a few hours, dunk the parts in the petrol/kero mix.

    Steam cleaning is best done on engine parts with a pressure nozzle. It melts away all grime - for that find a service station who has a proper high pressure unit, ask them for a time of when they can start the diesel heater in it, get it really hot and have them hlast away on the parts.
    I've heard of WD40 but what is ATF and from where can I get it ?

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    Quote Originally Posted by fakhir View Post
    I've heard of WD40 but what is ATF and from where can I get it ?
    ATF yaar! Automatic Transmission Fluid.
    Its good for cleaning but will cost you much more.
    Hum thora.....kam kharch bala nasheen nuskaa day rahay thay. werna if you want to remove rust and oil based stains and can spend alot.....try brake fluid......It works even better!
    Bikes don't leak oil, they mark their territory.

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    @fakhir this is really a good DYI job .. I am learning too.. would try that as MUST!!


    Quote Originally Posted by Xulfiqar View Post
    it will also hurt the parts, the best way is to get some small tubs, fill one half way with ATF and fill one with a mix of petrol+kerosene, dunk the parts in ATF so it can remove some oil and soften it too (ATF is a great cleaner) after a few hours, dunk the parts in the petrol/kero mix.

    Steam cleaning is best done on engine parts with a pressure nozzle. It melts away all grime - for that find a service station who has a proper high pressure unit, ask them for a time of when they can start the diesel heater in it, get it really hot and have them hlast away on the parts.
    Quote Originally Posted by aximaxim View Post
    ATF yaar! Automatic Transmission Fluid.
    Its good for cleaning but will cost you much more.
    Hum thora.....kam kharch bala nasheen nuskaa day rahay thay. werna if you want to remove rust and oil based stains and can spend alot.....try brake fluid......It works even better!
    https://www.pakwheels.com/forums/motorcycle-travel-diaries/277725-sober-riders-visit-khunjerab-adventurous-way-via-nori-pass

  19. #258
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    Quote Originally Posted by vickytulla View Post
    @fakhir this is really a good DYI job .. I am learning too.. would try that as MUST!!
    Sure i'll try it out as soon as I completely disassemble the engine!

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    hahahahahahha

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    yar awesome work MASHA ALLAH great work yar <3

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