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Yamaha MX & Off-Road Dirt Bikes
Help! I blew up two '06 Yamaha YZ125's this past weekend
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[QUOTE="Jaybird, post: 1121188, member: 22283"] I hope you get things all sorted out. I would like to suggest you consider this though... Your engine is seeing the higher end of the load spectrum and as a result heat plays a big role. Also as a result of the higher loading, the bearings and other wear surfaces are also providing a demand for protection at the higher end of the spectrum. A 32:1 ratio is normally sufficient to use with most all of the top shelf lubricants and fuels, and for the majority of riding, even with the higher revving small bore 2t engines. But when the demand is higher, so must the providing of protection. I think that the harder ridden engines do much better when they are given an ample supply of an oil that is sufficient for higher heat situations and the protection the bearings and surfaces demand. I'd think you much better off with more like 20:1 being the lower end of the scale. I would also consider using a different oil. I know that is panoras box of statements here.... but consider a couple of things. Jr. loves the smell and so do you. So do I...we all like it. Smell does squat, other than let a person know he's running bean oil, albeit castor one of the best lubricants. I think that a good synthetic ester or combination of esters provides the very best of protection at the level of protection a hard ridden engine needs. If you are a Maxima fan, I would give their synthetic ester a try. Klotz is hard to beat. They combine synthetic esters with some bean oil. (they get it both technically and marketwise) If money is an issue with increasing oil ratio, inexpensive Mobil racing 2t can offset it. Good luck on the big bore. [/QUOTE]
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Yamaha MX & Off-Road Dirt Bikes
Help! I blew up two '06 Yamaha YZ125's this past weekend
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