To drill out or to not drill out 50cc>60CC
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Thread: To drill out or to not drill out 50cc>60CC

  1. #1
    Junior Member
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    18773
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    Oct 2018
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    Lightbulb To drill out or to not drill out 50cc>60CC

    My questions is if its safe the make a standard 50cc {piston 40mm} a 59,8 cc {44mm piston} also know as the benelli 65cc its the 60s early 70s 4speed engine it is a iron cylinder. The fitting piston I can get NOS.

  2. #2
    Junior Member
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    20275
    Join Date
    Apr 2020
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    Smile similar problem I had

    I wanted to freshen my 65cc with a new 44mm piston only to find out ,my ebay piston order(seller is in Texas), was not an exact match, even though the description said otherwise. Look closely to the cutouts under the wrist pin area. I chose to bore to 44.6 and got NOS from ebay seller, santo_di_motocicli. ……...to be continued

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