So my question to all of you engine guys out there is.... when should I replace my rings and pistons on an etec engine? I'm about to buy an 09 MZX 600 H.O. etec with 5100 mikes on it and I had some guys at work asking me when am I going to replace the rings and pistons. This machine runs great...

Hi Everyone, This is litterally my 1st post, great site BTW and most of the info for my rebuild i found on here. This time I'm a lost, i very mechanically inclined but its my first sled rebuild... enjoying it just need a bit of extra knowledge from the gurus on this forum:) My 800r engine...

Guys, My 05 600X SDI is running on 1 cylinder and excessive amounts of oil are being dumped out of my exhaust. Does this have to do with the thread about the sticky oil pump or do I have a bigger issue? My sled has never been one to use a lot of oil. Sled has 6800 miles on it. My first guess is...

I was running yesterday and started loosing power. Came home and did a compression test, 20 psi mag, 145 pto. I started tearing down the engine thinking I had melted a piston and noticed the decompression plug on the mag side was out against the fuel rail. The head was off and the piston and...