Help Reading my piston

[ant_mb]

why, i would deffinently not run seafoam in my gas

Why is that? I've been running Seafoam and Satbil in my 2 stroke boat and jet ski for years. They all run great year after year and have required 0 mechaical maintenance EVER. Seafoam helps keep jets clean and carbon away. If you have a argument then I'll gladly listen, but if you have hear say then save it. Not trying to be an ass, but would like some facts and no opinions. It's like the guy who says Yamalube sucks! Give me a freaking break, Yamaha can build killer bike and quads, and puts junk oil in them? I have over 50,000 miles on a 2007 Yamaha FZ6 and have 0 problems with it. Guess which oil I use? As long as you change it regularly you can use the 99 cent oil from the gas station. Build your engines right and stop blaming it on the oil people. lol

 

[scotj77]

little bit of a correction on that. I said most people on the forum seem to think yamalube sucks.. I did a lot of research on oil after someone told me that. I found a lot of articles on two stroke oil and a lot of scietific studies on it. yamalube wasn't in the studies I found but castor always out ran the everything else in them. so I'm not just talking out my ass. I do use their four stoke oil in my tranny but after my research switched to castor for my two stroke. wish I had some links for you but it was a long time ago and I don't remember. I think I will look into the seafoam though. that's the cleanest piston I have ever seen with that amount of run time. what did the inside of the pison look like?

 

[mopar1rules]

Your piston is clean for a few reasons....probably the seafoam some, but most likely you're just too rich on the jetting. You see, the clean area on your piston crown, is what tuners and engine builders call "piston wash". It is a way (and most accurate) in watching jetting. I bet your plug is pretty dark. Usually w/that much "wash" you can back off your main jet 2 sizes. The piston is "wasged" like that, cause the extra fuel being passed thru the ports, washes the oil off the piston crown and keeps the crown cool enough, that the oil doesn't have a chance to burn to the crown and create carbon. But, if you're content w/how it runs, and don't foul plugs, then don't be afraid to leave it alone either. Also, head designs can play a role in how a engine excepts rich jetting or lean jetting. Don't jet based off of compression ratio, you use higher octane fuel to stop the deto.