i would purchase rings and new base gasket from dealer also check carb boots oh and new exaust gaskets you can reuse your orings reccomend putting thin layer of grease on orings when reinstaling

 

If you are going to take the time to do the rings, you should also replace the pistons. Do the complete top end and be done with it for a long time. Be sure to check the cylinders for any nicks or gouges. Slight ones can be honed out but if they are too deep you will need to replace the cylinder. Most importantly, make sure to do a thorough job of checking the condition of your RAV valves, reeds, intake boots, y-pipe and anything else you can get a good look at while you are in there. This is the time to catch any minor issues and take care of them before they become MAJOR issues.

I am doing the top end on my 04 600 SDI as we speak. I went with aftermarket piston kits from SPI which included the rings and circlips, new caged bearings and a Winderosa top end gasket kit. The parts cost me less than half of what OEM BRP parts cost and will be just as good, if not better.

Take the time to do it right and you'll end up with a nice reliable sled when you're done!
Good luck and ask questions if you get stuck!

JP

 

Thanks for the responses. I do plan on doing the whole top end including pistons. Hopefully all goes well. Thanks again!!!!!

 

how many km's do you have on the motor? I did my top end with 13,000 km's on my sled, right after i did the top end it took out the connecting rod bearing.