What piston and what motor do I need/have?¿

SHOmolka

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Apr 24, 2024
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Casper, Wyo
So I’m rather new to complete motor work I just know the basics. Two things I’m trying to figure out. First is exactly what type of motor I have. I ordered a “100cc” off Amazon and the motors great but it’s clearly some type of 66/80 after measuring the bore and second I have a reed valve I want to install but need to figure out which piston to purchase. I was about to purchase one but I noticed someone in reviews saying they got the wrong one as it was advertised as a high hole but instead got a low hole. What the hell does that mean? Haha. Any help would be greatly appreciated! Glad to join the community
 

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Agreed. He removed the less dangerous (but still quite dangerous) rear fender.
He truly needs to read this since he still has that front fender on his...Major maiming or death resulting with those fenders.

 
He truly needs to read this since he still has that front fender on his...Major maiming or death resulting with those fenders.

That is one thing I didn't listen to when I first started building bikes. I was foolish not to, I got out lucky with only having to rebuild my bike and not ending up in the ECU. When I rebuilt my bike I made sure the fenders would stay attached (now that I think about it it's still dumb and those are gonna go when I swap the forks).
 
That is one thing I didn't listen to when I first started building bikes. I was foolish not to, I got out lucky with only having to rebuild my bike and not ending up in the ECU. When I rebuilt my bike I made sure the fenders would stay attached (now that I think about it it's still dumb and those are gonna go when I swap the forks).
Do you realise that your little "Fender Bender" happened exactly one year ago to this very day, the 24th of April???...lol.
 
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