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MX, SX & Off-Road Discussions
General Moto | Off-Topic Posts
Thanks Ladies...Purchasing KX100...Need Help!
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[QUOTE="xrkx, post: 709609, member: 49723"] I see that some of you say that you can run the KX at 36-40:1 mix to aviod a little extra oil at the tail pipe. My wife's KX100 does the same thing. Just my 2 cents on the subject..... I have some concern with running that light of a mixture on the 100. Here is my reasoning. I work at an outboard shop and almost all modern day two stroke outboards have a type of oil injection on them. They almost all have a variable oil injection. What this means is that at lower RPM, the motor does not need a heavy oil mix. At a higher RPM, the motor does need the extra oil. The outboard motor is setup to deliver the amount of oil needed for that RPM. Now, on a KX100 there is no oil injection. At high RPM is where the motor needs that 32:1 mix. At high RPM is where it is important for the bearings and piston to have that 32:1 mix. At lower RPM is where you do not need that much oil in the gas and that is when you get the extra oil at the silencer. You may very well have a bike that runs just fine on a 40:1 mix. But at high RPM, the motor is not getting the oil needed and therefore, you are shortening the motors life just to avoid a little extra oil at the end of the pipe. I have seen people with older outboard motors try to cut back on the mix to prevent the motor from loading up while trolling. Works fine at trolling and cruise speeds but when they tried to drag race the boat next to them, they blew up. I also new a guy that thought the same thing about his CR250. He thought that he did not need that much oil either. Ran fine on the trail but when he started riding a little harder in the open, it locked up. So, if I have to put up with a little extra gew at the silencer to ensure that my wife's KX will run a long time then I have no problem with the gew. Just my 2 cents worth. [/QUOTE]
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MX, SX & Off-Road Discussions
General Moto | Off-Topic Posts
Thanks Ladies...Purchasing KX100...Need Help!
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