i have a 87 cyclone and i am wanting to rebuild the top end, how do i know what size piston to get? or how much to bore it out or just hone, i think it was rebuilt several years ago, can anyone tell me the process of rebuilding it and what tools i will need, thanks in advance for all the help

 

The only way to know what size piston to get is to tear it down and measure the bore with an inside mic or a bore gage. A good machine shop can measure the tapper and wear on the bore. Most oversized pistons have oversize #'s stamped into the top of them.
Sorry, can't give you rebuild info on an 87 cyclone.

 

Doc is right. Take it to a good machine shop and they should be able to tell you if it needs to be bored out or honed and what size it is. Your local Polaris dealer may have a machine shop they use that will be helpfull. You wont need too many special tools. You will need a base gasket, top end gasket, exhaust flange gasket. A torque wrech, metric sockets and wrenches. If you get a new piston you may need a pin retaining clip puller, but it can be done without one. The one tool I would say you need to try to buy or borrow for sure is this torque wrench adapter from Motion Pro. Many bike shop will have it too. It comes in handy for torqueing the cylinder base nuts.

 

u dont need a torque wrench adaptor as long as your good with a wrench and can make sure u can get the bolts nice a snug and make sure that they are all tightened down even.

 

just send it to rick ritter and have him bore it the next size adn ask for a piston to fit