55 mph from a 88cc?

Discussion in 'Tech Area' started by OLD CT, Feb 21, 2021.

  1. OLD CT

    OLD CT Well-Known Member

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    IMG_0849.JPG Just finished tinkering around and breaking in a 72 3 speed auto engine 6 volt CDI engine # 222250 I built years ago and socked away. I had it going 53 with a few more mph left. 40mph all day. This engine rips! Anyone looking for a strong engine to go in a K1 frame, I have a solid 88cc runner the will hang with a Lifan125! PM me for the details.
     
    #1 OLD CT, Feb 21, 2021
    Last edited: Feb 21, 2021
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  3. Rob Warren

    Rob Warren New Member

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    That's awesome how did you get that performance?
     
  4. OLD CT

    OLD CT Well-Known Member

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    Stock head with a quality valve job, new valves, ported, better cam. 6volt CDI conversion kit. No points, A very BRIGHT headlight, worthy of night time riding. It has a 20mm intake and a vm20 carb.
    Genuine Honda dratv timing components, D.I.D. 82 link chain, not the cheap aftermarket kits. New clutch discs/plates with hd springs.
     
  5. dirtbkr188

    dirtbkr188 Active Member

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    All of the above modifications heartily contribute to the overall speed, but Old CT forgot to include a pic of the street that he lives on, it has a slight incline....:whistle:

    IWmamR.jpg
     
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  6. Rob Warren

    Rob Warren New Member

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    sweet I am thinking I want to take this path as well.

    What cam did you purchase? Where is a good place to get the 6volt CDI conversion hit and Bright headlight?

    Sorry for all the questions, but not sure how you got to this spec.

    Thanks
    Rob
     
  7. OLD CT

    OLD CT Well-Known Member

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    LOL! I don't live in Easton P.A. anymore. I live in South Carolina, no big down hills and it was on a 50mph ''country'' flat road.
    I bet you are testing/tuning your snow blower dirtbiker...:LOL:
     
  8. Rob Warren

    Rob Warren New Member

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    PM sent
     
  9. dirtbkr188

    dirtbkr188 Active Member

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    Absolutely, I've got more running time on it the last two weeks than I have in the last 2 years...
     
  10. OLD CT

    OLD CT Well-Known Member

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    mc-easton-snow-update-20160125.jpg Greetings from Easton P.A.! Grab your 88cc sled!
     
  11. Tripod

    Tripod Active Member

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    Oldct what cam? You said stock head and i know you hate the dratv race cam.
     
  12. OLD CT

    OLD CT Well-Known Member

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    It was a SL70 or a mini monster cam, It's been a few years since I built it. Not a full race cam. It revs up real quick without a real lumpy idle.
     
  13. Bad Dax

    Bad Dax Member

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    Whats wrong with the dratv race cam? Is that the cam that comes with a needle roller bearing that presses into the stock head?
     
  14. OLD CT

    OLD CT Well-Known Member

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    I used it several years ago and the cam walked in the head, if the bearing journals are in really new condition it might stay put. I don't recommend it. There are better hi lift cams to use that you do not need to press in. A SS50 6 mm lift cam, is one. Not sure who would sell it, as it was quite some time ago.
     
  15. Tripod

    Tripod Active Member

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    Is the kitaco cam on webike any good? Im nit really educated on cam specs.

    Also, as for the "fast road cam" that has been mentjoned as being the sl70 cam, i cant find a part number. Partzilla lists the same cam for sl and ct70
     
  16. OLD CT

    OLD CT Well-Known Member

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    The Mini Monster is your bet bet Tripod. That would be the closest to the fast road cam. I think the SL70 cam back in the day is different now compared to what you can buy new. It would be the same listing as a CT70 when you look it up now. I have never purchased a Kitaco cam from webikes.
     
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  17. Gary

    Gary Well-Known Member

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    S65 and CL70 had the same cam,14101-035-020 which is a different part number from any other OHC they built. Here are the specs in case anyone has the specs for a SL,H etc. to compare if in fact it tells you anything..... These bikes got their max hp at 10k, max torque at 8.5k

    . honda scan 2.jpg
     
  18. OLD CT

    OLD CT Well-Known Member

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    Anybody have a magnifying glass?:eek:
     
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  19. kirrbby

    kirrbby Well-Known Member

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    I do.

    honda-scan-2-jpg.jpg
     
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  20. kirrbby

    kirrbby Well-Known Member

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    I've looked at several SL70 camshafts and could never see any difference from common CT70 or Z50 cams. I thought I checked the CL70's too...but I'm not sure. I have a couple CL70 heads tho that I can compare when I have some time.

    Seems like all of the common cams have a 41 stamped on the right end.
     
  21. Gary

    Gary Well-Known Member

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    If you click on a thumbnail here it opens up but maybe not enough it seems. For the most part I always use the thumbnail size cuz I'm not sure everyone wants to see a huge picture they might not be interested in :)
     

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