Ring snag???

[Fleagle101]

 

[Karl Snarl]

Yeah, and at the end of the day the average person doesn’t care to mess around with it. Just cheaper and easier to get a new cylinder. Now if it is a custom deal, or a rare engine that you can't get parts for, sure.

Me, personally, I would probably just bore the cylinder out, press in a steel sleeve, and machine out the port holes to match. Also a lot of work, sure, but work I can do at home, or have done by most machine shops.

Plus, a steel sleeve will last for ages to come.

I'd do the same as you, steel sleeve it at home and pin 'er in. Some people like to play though.

 

[Whitewill1412]

Where would you get the sleeve?

 

[GW's Motorized]

Where would you get the sleeve?

Just look online for a 49mm sleeve, then all you would have to do is give it a quick hone after pressing it in.

 

[ImpulseRocket]

Just look online for a 49mm sleeve, then all you would have to do is give it a quick hone after pressing it in.

Phantom is 52mm

 

[ImpulseRocket]

Where would you get the sleeve?

Most engine shops can order them from suppliers. They may require sizing before installing in the OD, and the cylinder itself gets bored to size for a tight interference fit, usually requiring the sleeve to be chilled and bore to be heated AND then pressed in. After that it would be bored for ID and the jug lightly decked. The tricky part with 2 strokes is the ports have to be done by hand. That creates some of its own challenges, obviously.

 

[GW's Motorized]

Phantom is 52mm

I learned something new

 

[ImpulseRocket]

I learned something new

No biggie. The Phantom 85 is a true 85cc. 52mm x 40mm. They don't call it a "110" like they call the 66cc motors "80."

 

[Karl Snarl]

No biggie. The Phantom 85 is a true 85cc. 52mm x 40mm. They don't call it a "110" like they call the 66cc motors "80."

An 85cc in chinesium is 250cc's.

 

[GW's Motorized]

An 85cc in chinesium is 250cc's.

So what about everybody's favorite predator 212s, are those truly 212cc?

 

[ImpulseRocket]

An 85cc in chinesium is 250cc's.

It's actually 110 in chinesiums. The "110" engines are 52mm x 40mm lol