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LB50 Chappy Engine Upgrade

brad460
in Yamaha Workshop

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Posted

Does anyone know if you can upgrade the 50 cc engine in the LB50 Chappy to the 80cc engine? My dealer doesn't seem to know either. I've got 78 LB50. I can see that the connecting rod is the same part number between the 50 and the 80, so I'm betting that it's just the bore that's different, but does anyone out there know? Thanks in advance... :blink::blink::huh:

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    • 4 months later...

    Does anyone know if you can upgrade the 50 cc engine in the LB50 Chappy to the 80cc engine? My dealer doesn't seem to know either. I've got 78 LB50. I can see that the connecting rod is the same part number between the 50 and the 80, so I'm betting that it's just the bore that's different, but does anyone out there know? Thanks in advance... :blink::blink::huh:

    they make a kit for the 50 its on ebay that pumps it up to 70cc.its made by polini

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