1981 Honda C70 - Top End Rebuild and Neutral Switch Troubleshooting (6V/12V Charger Giveaway!)

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  • Опубліковано 10 вер 2024
  • In this video, I troubleshoot a neutral switch issue with someone else's 1981 Honda C70 Passport, as well as perform a head refresh and new cylinder/piston/rings installation.
    Did you read this far or watch far enough to realize there's a giveaway happening in this video? Follow the rules in the video and you can win one of these!
    AstroAI 6/12v battery charger: www.amazon.ca/...
    Links mentioned in the video:
    Scott's CB750 Carburetor Rebuild: • Honda CB750 Carburetor...
    Old Honda Manuals: blastworks.net (Click the Manuals link)
    Valve adjustment tool set: amzn.to/2TlIk7h
    Follow me on Instagram for a sneak peek of what I'm working on during the week!
    / blastworksnl
    Music by blastworks.
    Frank Haskell - Blastworks Theme

КОМЕНТАРІ • 46

  • @blastworks
    @blastworks  3 роки тому +2

    The draw has been done and Cale Marlow is the winner! Congratulations Cale!

  • @arthurcrozier4739
    @arthurcrozier4739 Рік тому +1

    Just got done working on a 81 c70 passport sat since 1987 got it running new battery carb all lights were blown had 1044 miles on it thanks for video

    • @blastworks
      @blastworks  Рік тому

      Glad it was helpful Arthur. Good luck with the old C70!

  • @tonynguyen103
    @tonynguyen103 Рік тому +2

    That awesome! I need that battery charger for my scooter

    • @blastworks
      @blastworks  Рік тому

      Sorry Tony. This one ended over a year ago!

  • @leewicks7319
    @leewicks7319 Рік тому +1

    Hey, great video! Love the troubleshooting, im just starting out fixing my 1980 c70, and this video helps so much,
    You dont fancy doing a step by step video on converting a c70 6v into a c90 12v, i think that would be great and popular,
    Thanks alot 👍

    • @blastworks
      @blastworks  Рік тому

      Once I finish my C70 resto project it could definitely be the next project!

  • @tylerhunt891
    @tylerhunt891 3 роки тому +2

    I have a 81 honda passport that I just bought, could defineltly use that battery tender! Great videos!

    • @blastworks
      @blastworks  3 роки тому +1

      Consider yourself entered!

  • @BloodBaran
    @BloodBaran 3 роки тому

    Man, thank you so much for these videos. I'm restoring a 1981 passport right now and your series (as well as this one) is so helpful. I especially appreciate your painting tips, even though I'll be rattle-canning mine. I'm sticking a 125cc lifan on it since it doesn't have the original motor. Also could use that charger on my old beat up Ural.

    • @blastworks
      @blastworks  3 роки тому +1

      Consider yourself entered, Mark! I'd love to see that old Ural!

  • @ensidfkgnur
    @ensidfkgnur 2 місяці тому +1

    Sheesh, thanks for the great walk-through! Liked and subscribed, amazing work!!!

    • @blastworks
      @blastworks  19 днів тому

      Glad I could help, and thanks a bunch for the sub!

  • @MarkMarogil
    @MarkMarogil 3 роки тому +2

    Damn wish I was closer to you so we could work on my C70! Great video here.

  • @blastworks
    @blastworks  3 роки тому

    Just a heads up regarding the contest! I've decided to run it for another month to try to get a few more entries. Check back on August 1st as I'll announce the winner in a pinned comment!

  • @bmarcum1570
    @bmarcum1570 3 роки тому +1

    Thank you for this video man! Just bought my first passport and this video is about to be my Bible while I redo this!

    • @blastworks
      @blastworks  3 роки тому

      I've got an entire series where I'm working through restoring my own as well. Check out my playlists!

    • @MrPeperayita
      @MrPeperayita 3 роки тому +1

      Thanks this video help me a lot ,, I have a c70. 1981 and I ,, will fix my starter neutral switch ,, with your excellent advice , and will have my bike on the road again ,,, thanks !👍😋

    • @blastworks
      @blastworks  3 роки тому

      @@MrPeperayita I'm happy that I was able to help you Jose! Cheers!

  • @traviscopsey4114
    @traviscopsey4114 2 роки тому +1

    Awesome job

  • @ericvanbernum7799
    @ericvanbernum7799 Рік тому +2

    maybe you can help me I have the same problem I replaced the neutral switch now I get a green light but when I hit the start button the green light dims still getting nothing maybe have a short somewhere can you help me with this

    • @blastworks
      @blastworks  Рік тому

      I'd start with checking the battery. If you have a multimeter, test the DV voltage of the battery. It should be over 6V.

    • @NoosePaper
      @NoosePaper Рік тому

      Hi there I’ve got a 1980 c70 and i have the exact same issue, did you ever figure it out ? I’ve cleaned every connection and bench tested the solenoid and it still doesn’t work! thank you, i hope we figure it out.

  • @rogermedeiros277
    @rogermedeiros277 5 місяців тому +1

    I also own a yellow c70. Owned it for 10 yrs. I noticed in your video that you said you had a manual to download. Cant seem to find it

    • @blastworks
      @blastworks  5 місяців тому

      Hey Roger! In this directory www.blastworks.net/manuals/ you will find a file named "Honda C70 Shopmanual.pdf".
      This is the one you want!

  • @larrycron3018
    @larrycron3018 7 місяців тому +1

    Hi Blastworks,
    I got my 70 passport stared, idles great, give it gas and it bogs or wants to die. If I leave it idling it runs great, can’t get it to throttle? Any suggestions? Even though the carburetor is new, it’s after market and not sure if it’s still the carburetor.

    • @blastworks
      @blastworks  7 місяців тому

      Long time no see Larry! Could be jetting or slide needle position. If you didn't do any adjustments from stock on the new carb to the slide needle position washer, that would be my first point of investigation. Drop it down makes the mix more lean, raise it up makes it more rich.

  • @jellyjiggler5311
    @jellyjiggler5311 2 роки тому +1

    your bike sounds soo quiet!! I wish i could make mines quieter

    • @blastworks
      @blastworks  2 роки тому

      Wait until I get my blue C70 restoration back together! Check my channel for the playlist. I've got a brand new muffler for it!

  • @calemarlow2283
    @calemarlow2283 3 роки тому +1

    fun watch, hard to believe the video was an hour and a half

    • @blastworks
      @blastworks  3 роки тому +2

      Thanks Cale!

    • @calemarlow2283
      @calemarlow2283 3 роки тому +1

      @@blastworks i dont have a shop but that battery tender could help me maintain the battery for my 81 c70 :)

    • @blastworks
      @blastworks  3 роки тому +1

      @@calemarlow2283 Consider yourself entered! At this rate you may be the only one! :)

    • @blastworks
      @blastworks  3 роки тому

      Cale, I've done the draw and you have won! Please contact me via my email address on my website (link to my website is on my channel about page) so we can get things worked out!

  • @robertolopez423
    @robertolopez423 11 місяців тому +1

    Is their a way to convert a 81 c70 to 12v?

    • @blastworks
      @blastworks  11 місяців тому

      There is definitely a way. I've seen similar conversions on other things here on UA-cam. I'd say any 6v -> 12v conversion on any motorcycle would apply to the C70 as well.

  • @joshf7228
    @joshf7228 3 роки тому +1

    Where do you get you top end kits from? was looking at the ebay kits, have you tried them?

    • @blastworks
      @blastworks  3 роки тому

      The top end kit that I used here was provided by the owner of the bike. I believe he got it from ebay. I'd trust them enough for my own C70 as well (if I needed one). You can check out my entire C70 series playlist on my channel for the one I'm currently restoring.

  • @tohka3347
    @tohka3347 2 роки тому +1

    Can I see the battery pulled out? I wanna see what I’m missing :,) so far missing the negative cable for mine. Due to my family throwing out my old battery with the cable🤦🏼‍♀️ but just wanna see how its set up🤔 can send the vid to my #? if you like :,)

    • @blastworks
      @blastworks  2 роки тому +1

      You can literally run a piece of wire from the negative battery terminal to anywhere on the body and you're good!

    • @tohka3347
      @tohka3347 2 роки тому

      @@blastworks thank you 🥹

  • @pnaz14
    @pnaz14 5 місяців тому

    Great videos. I rebuilt a 1971 Honda 70M a few years ago and enjoy the hell out of it but is one part I cannot figure out how to install.
    It"s called a chain case gasket and it's OEM part number is 40591041000. I's a rubber piece that somehow is at the front of the drive chain and protects either the drive chain or the frae from interference by the drive chain. This part was used on a number of C 70, C 90, C 100, etc models but I cannot find a diagram showing where or how this rubber gasket/seal/? is assembled. Any ideas?

  • @roccob9011
    @roccob9011 Місяць тому

    Hello Frank i sent you couple of emails and still waiting for a reply, Please drop me a line i need your expertise. Thanks

    • @blastworks
      @blastworks  Місяць тому

      @@roccob9011 hey, I've not seen any of your emails. Reach out to me via DM on Instagram (@blastworksnl) and we can connect there!