twizted269 Posted January 30, 2009 Report Posted January 30, 2009 just got cool head today with 20 cc dome. was told it was 21 but found out they were 20s. anyway, compression is at 150 deadnuts on both cylinders. just want to know if this will affect by jetting from what it was with 118 psi, and if its still safe to run pump gas. usually run 93 or 94 so want to stay with it. Quote
magz Posted January 30, 2009 Report Posted January 30, 2009 no input from anyone? use the search button also it help to list your mods,IE*pipe,filter,elevation,temprature you plan on ridding in* but generally compression shouldnt change your jetting, when in doubt do a plug chop. also 155 to 160 run 100 octane or 110 or whatevers avalible, youll be board edge, just see how it runs, if it feel likes its pinging then try bumping down to 21cc domes, but truely 20s should be fine. Quote
twizted269 Posted January 30, 2009 Author Report Posted January 30, 2009 (edited) use the search buttonalso it help to list your mods,IE*pipe,filter,elevation,temprature you plan on ridding in* but generally compression shouldnt change your jetting, when in doubt do a plug chop. also 155 to 160 run 100 octane or 110 or whatevers avalible, youll be board edge, just see how it runs, if it feel likes its pinging then try bumping down to 21cc domes, but truely 20s should be fine. mostly trai riding with maybe a dune trip. elevations is about 600 to 700, jetted at 290 mains, 30 pilots, +4 advance, fmf gold series, boyeson power reeds, 40 over, stock port, wiseco prolite pistons, k+n proflow kit, usuall ride between 60 and 90 degree weather with this one. and i think thats it with that. Edited January 30, 2009 by twizted269 Quote
magz Posted January 30, 2009 Report Posted January 30, 2009 (edited) mostly trai riding with maybe a dune trip. elevations is about 600 to 700, jetted at 290 mains, 30 pilots, +4 advance, fmf gold series, boyeson power reeds, 40 over, stock port, wiseco prolite pistons, k+n proflow kit, usuall ride between 60 and 90 degree weather with this one. and i think thats it with that. if it runs good stay with it, id probably be running a stock pilot or a 27.5 pilot, 30's a little big,and id bump the main jetting up to a 310 to be on the rich side. needle id say right about the middle or second from the bottom. Edited January 30, 2009 by magz Quote
locogato11283 Posted January 30, 2009 Report Posted January 30, 2009 just got cool head today with 20 cc dome. was told it was 21 but found out they were 20s. anyway, compression is at 150 deadnuts on both cylinders. just want to know if this will affect by jetting from what it was with 118 psi, and if its still safe to run pump gas. usually run 93 or 94 so want to stay with it. sup g? your jetting wont be affected much if at all from this. you should be fine to run pump gas with this setup. if you plan to go much higher, you will need to consider the use of race fuel. Quote
vulvafan537240 Posted January 30, 2009 Report Posted January 30, 2009 mostly trai riding with maybe a dune trip. elevations is about 600 to 700, jetted at 290 mains, 30 pilots, +4 advance, fmf gold series, boyeson power reeds, 40 over, stock port, wiseco prolite pistons, k+n proflow kit, usuall ride between 60 and 90 degree weather with this one. and i think thats it with that. if it runs good stay with it, id probably be running a stock pilot or a 27.5 pilot, 30's a little big,and id bump the main jetting up to a 310 to be on the rich side. needle id say right about the middle or second from the bottom. i run 290 mains and 30 pilots and jetting is good. its not a bad idea to do a plug chop tho if youve never done one. Quote
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