CT90

Discussion in 'Battle Scooters' started by grizzzly, Sep 5, 2019.

  1. grizzzly

    grizzzly The Pre-Banned Version

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    i just had a little 90 follow me home and i am trying to identify it found the VIN but cant figure out the year
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    the pic with the vin didnt come out too good but it is CT90-122787

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    #1
  2. pnw

    pnw Long timer

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    The leading link forks and the dual range sub-transmission was on the "K0" model from late '67 and all of '68
    #2
  3. kevrags

    kevrags Adventurer

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    #3
  4. grizzzly

    grizzzly The Pre-Banned Version

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    i am not seeing anything with "ko" on it and it looks like they started with serial number 100001 and this is serial number 122XXX (i am probably way over thinking this) one of the sites claimed that honda made about 30,000 a year so this bike was probably made in 66 but it was a 67 year model?? oh well that is what i put on the surety bond and i am putting it in the mail now so in 90 days we will see what the state has to say
    #4
  5. grizzzly

    grizzzly The Pre-Banned Version

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  6. ADVDucs33

    ADVDucs33 Been here awhile

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    I'd lean on it being a '66.

    Below is off of ct90.net

    "An important point: your serial number doesn't necessarily indicate the year in which it was built. It does indicate its "K-series," which is useful for buying parts. In a rough sense, a K2 has a serial number starting with CT90-3xxxxx. And most K2s were 1970 models. But not all. Most bikes with a serial lower than 200000 were pre-1969 bikes, and they built around 30,000 per year. Do the math. If you don't know where your serial number is, check this page"

    Your bike is the 22,787th one made. So well within the first years number.

    A thing I have seen with a few of these old Honda step thrus is the wiring harness will have a white tag on it with the year the harness was made.
    If your harness has the tag it would be on the portion under the protective sleeve with the buttons on the frame tube.

    Looks like a complete bike to start with, and spray painted too. Bonus! Have fun with it!

    Edit: just saw the other posts! Makes sense built in '66 sold as '67
    #6
  7. JT105

    JT105 Let's Ride!

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    The ‘66 has dual sprockets on the rear wheel. Later years have the dual speed transmission.

    JT
    #7
  8. Bhuddy21

    Bhuddy21 Adventurer

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    Looks great
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    #8
  9. JT105

    JT105 Let's Ride!

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    Yeah.... what he said ^^^

    JT
    #9
  10. Kevinforesthill

    Kevinforesthill Adventurer

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    Very Nice find. I wonder if a light rubbing with some paint thinner would take off that bad paint job.
    #10
  11. JT105

    JT105 Let's Ride!

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    That’ll buff out!

    JT
    #11
  12. grizzzly

    grizzzly The Pre-Banned Version

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    the second picture was brake cleaner and Scotch bright and about 10 minuets
    #12
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  13. lonegunm4n

    lonegunm4n Been here awhile

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    As another poster has said, it is going to be 'late' '67 to '68.

    A '66 to 'early' 67 would have the double sprocket and no dual range sub-trans. You have a single rear sprocket and the dual range sub-trans, plus your frame serial number is after the mid-year upgrade.

    You won't find the 'K0' anywhere on the bike. The K number is Honda's model number for the bike.

    For instance, I own a 1970 Honda Trail 90. Honda's model number for it is CT90K2. A 1975 Honda Trail 90 would be a CT90K6. Honda stopped the model numbers for 1976, so a 1976 Honda Trail 90 would simply be a CT90 '76.

    I wouldn't go by 'Honda made around 30,000 of these bikes a year'. My '70 K2 was manufactured in 12/1969 and was the 142nd CT90 made for that model year.

    Also, it is perfectly normal for your engine serial number and your frame serial number to be completely different if you ever compare the two.
    #13
  14. grizzzly

    grizzzly The Pre-Banned Version

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    any idea what the number in the second picture is
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  15. lonegunm4n

    lonegunm4n Been here awhile

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    It's an internal QC number for Honda during the initial manufacturing process.
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  16. JerryH

    JerryH To Each Their Own Supporter

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    It's a beautiful old bike. Looks like a WWII military bike. May be hard to find parts for a Japanese bike that old. What are your plans for it?
    #16
  17. grizzzly

    grizzzly The Pre-Banned Version

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    i would like to restore it but i think i am just going to get it running and go from there
    #17
  18. grizzzly

    grizzzly The Pre-Banned Version

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    didn't have any paper work on the bike (why i was trying to identify it) so got the vin done and the other stuff together and sent off for the Surety bond (that is how it is done in New Mexico now)
    so while i am waiting on that i decided to take a look in the engine

    not quite as bad as i had originally thought but
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    yuck
    #18
  19. JerryH

    JerryH To Each Their Own Supporter

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    Wow, that piston, cylinder and head are in bad shape. Looks like it might have been burning a lot of oil for a while. I love the look. I would love to ride around town on something like that. I can just imagine the looks it would get parked in front of a fast food place.
    #19
  20. DualSpaz

    DualSpaz Been here awhile

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    From Honda motorcycle indentification guide

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    #20
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