duramaxsmoke Posted January 19, 2012 Report Share Posted January 19, 2012 i just did a 392 kit cool head with 18 dome 160 compression stock stroke stock carbs i started at 360 mains 27.5 pilot sheaer inframes ,when riding its a dog for a good 8-10 sec then hits the power band and screams .im happy with the power just want it to hit the powerband like before {with stock bore fmf pipes no cool head 300 main 27.5 pilot }any input would help i changed the jets to 350 but didnot have a chance to run it got too late i need help Quote Link to comment Share on other sites More sharing options...
rdzbangshee Posted January 19, 2012 Report Share Posted January 19, 2012 toomy needles will make it not do that they will make it better but most like the stock needle they say it is snappier like you said . i like 28mm carbs on stock jugs.or 35mm pwks on my 421 aggresive trail ported jugs .and i use ported wsm pistons for a tad more power on pump gas hop this help you.155 cpr Quote Link to comment Share on other sites More sharing options...
fuzzypickles Posted January 19, 2012 Report Share Posted January 19, 2012 Sheaerer in frames are top end pipes, I have them on my 'Shee. they increase your revs and are some of the best drag pipes on the market but you lose a lot of low end. The porting on your 392 kit also matters a lot. Quote Link to comment Share on other sites More sharing options...
Nutwood 472 Posted January 19, 2012 Report Share Posted January 19, 2012 i just did a 392 kit cool head with 18 dome 160 compression stock stroke stock carbs i started at 360 mains 27.5 pilot sheaer inframes ,when riding its a dog for a good 8-10 sec then hits the power band and screams .im happy with the power just want it to hit the powerband like before {with stock bore fmf pipes no cool head 300 main 27.5 pilot }any input would help i changed the jets to 350 but didnot have a chance to run it got too late i need help try lowering the needles to clear up the mid and if that doesnt help it,then rejet the main down and keep a close eye on the spark plugs. Quote Link to comment Share on other sites More sharing options...
duramaxsmoke Posted January 20, 2012 Author Report Share Posted January 20, 2012 move the needle up like towards blunt end ill try ans see what happens it starts 1st kick and runs great maybe ill just get a dyno tune prob the best to do Quote Link to comment Share on other sites More sharing options...
RadarRacing Posted January 20, 2012 Report Share Posted January 20, 2012 You didnt say what 392 you have but if it is the athena kit they have no bottom end or torque compared to stock. I amm assuming your plug chops have a nice beer bottle brown ring about 1 - 1 1/2 mm tall? Was ot the same color when riddden on the needle ? Thats very important or it will bogg. Quote Link to comment Share on other sites More sharing options...
duramaxsmoke Posted January 20, 2012 Author Report Share Posted January 20, 2012 (edited) yea i got the athena kit used for 300 with cool head bb 19 cc domes couldnt pass but now thinking i shuld have just got a stock set ported do i launch full throttle or what it is so fast in power band im stumped i want a lot of top but still want mid to compliment ,i only have 1300 in total build bike pipes and big bore new to 2 stroke but hooked thanks for all help so far plug looked ok for three full pulls but did not shut bike down like i shuld have idk Edited January 20, 2012 by bodo Quote Link to comment Share on other sites More sharing options...
RadarRacing Posted January 21, 2012 Report Share Posted January 21, 2012 Unfortuneately the athena kit is that way. They should advertise it as . No low to mid , more topend than stock but still not as good as a ported set of cyls or a cub. All this for only $899...... Quote Link to comment Share on other sites More sharing options...
duramaxsmoke Posted January 22, 2012 Author Report Share Posted January 22, 2012 Unfortuneately the athena kit is that way. They should advertise it as . No low to mid , more topend than stock but still not as good as a ported set of cyls or a cub. All this for only $899...... well ill just have to get a cub than lol i only lost on 200 so its not that bad im sure i can sell it and at least get my stock cyls ported ill try it and see what happens ? Quote Link to comment Share on other sites More sharing options...
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