01-28-2018, 01:28 AM | #15 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 7,929
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Quote:
It was my pleasure guys. Just remember that my explanation is pretty simplified, but if you do a little google searching you can come up with all sorts of information that will go more in depth than I did. If you really want to get into tuning, you can always install a wideband O2 on the exhaust to really aid in dialing in carb tuning. Kind of an expensive route to go, but it can always be used on other bikes in the future. Simply put a plug in the sensor bung when not in use. The old fashioned way is to read the spark plug. You can find a charts like this one to help point you in the right direction. http://bustekhub.com/wp-content/uplo...on-Chart-1.png Really, once you start messing with carb tuning you realize how simple it really is. The only other thing to really keep in mind is that since these carbs are purely mechanical in nature, if the air density altitude changes via temp swings or large enough elevation changes, the bike will run leaner or richer. The general rule of thumb with Mikuni jetting is a full jet size per 5000ft altitude or 50 degree change in temp. Aka, you have a 115 main jet that is perfect in 90 degree temps, once the air temp drops below 40 degrees it is a good idea to step up a jet size to a 120, or at least half a step like a 117.5
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2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2010 VFR1200F - http://chinariders.net/showthread.php?t=20708 |
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