honda65 Posted October 9, 2019 Report Share Posted October 9, 2019 Hi, I'm new to the sport, like really really new. Long time motocrosser, good solid 40+ expert rider (almost 60 actually) but a complete and utter spode on this thing. And by this thing I mean a 2019 300 EVO I picked up on a whim this summer. I'm a bit heavy at the moment (225) and installed stiffer springs and adjusted my handlebars a bit further forward. I plan to dump the break in gas (40:1) and use the recommended ratio. Right now it both pings and burbles and blows lots of smoke. Basically I'm wondering what things I should look for, things that break or need modification. Good hop ups, jetting specs, etc. Basic stuff. Any input would help Thanks Quote Link to comment Share on other sites More sharing options...
b40rt Posted October 9, 2019 Report Share Posted October 9, 2019 I'd run it at the recommended ratio for a tank or two before considering touching jetting. Quote Link to comment Share on other sites More sharing options...
tshock250 Posted October 9, 2019 Report Share Posted October 9, 2019 Even 80:1 using good quality synthetic oil my ‘19 evo puts out a lot of blue smoke as it seems to collect in the pipe if your not riding it hard. Quote Link to comment Share on other sites More sharing options...
lineaway Posted October 9, 2019 Report Share Posted October 9, 2019 Go to a 48 pilot jet. The stock main should be fine. You are killing your exhaust an early death at 40 to 1 unless you are road racing. Quote Link to comment Share on other sites More sharing options...
midlife Posted October 9, 2019 Report Share Posted October 9, 2019 8 hours ago, b40rt said: I'd run it at the recommended ratio for a tank or two before considering touching jetting. What type of oil would you use Quote Link to comment Share on other sites More sharing options...
b40rt Posted October 9, 2019 Report Share Posted October 9, 2019 3 hours ago, midlife said: What type of oil would you use https://www.google.com/search?q=cooking+oil&oq=cooking+oil&aqs=chrome..69i57j0l15.5552j1j4&sourceid=silk&ie=UTF-8#imgrc=JxNLBxS96CyRhM: 1 Quote Link to comment Share on other sites More sharing options...
dan williams Posted October 10, 2019 Report Share Posted October 10, 2019 Oh you are just evil! 1 Quote Link to comment Share on other sites More sharing options...
honda65 Posted October 14, 2019 Author Report Share Posted October 14, 2019 Hey thanks for the replys, been away from the computer. Yes I know the 40:1 needs to go. Manual says 60:1 but I thought some else also told me 80:1 which I have no problem doing. I was planning on trying the mix before jetting but it definitely pings off the bottom so I might look at the 48 pilot. As for oil, I prefer Crisco 1 Quote Link to comment Share on other sites More sharing options...
dan williams Posted October 14, 2019 Report Share Posted October 14, 2019 Partial to sesame oil myself but that’s a different application. Beta’s are notorious octane pigs. If you want it to run properly feed it the good stuff. You can also get a low compression head which reduces the octane requirement somewhat and makes the 300 a little less hyper though it will occasionally remember it’s still a 300 and surprise you if you’re not careful with the noisy grip. Quote Link to comment Share on other sites More sharing options...
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