http://www.kfx450central.com/forum/ Discussion on modifying your engine and transmission en Thu, 09 Sep 2010 04:27:35 GMT vBulletin 60 http://www.kfx450central.com/forum/images/misc/rss.jpg http://www.kfx450central.com/forum/ http://www.kfx450central.com/forum/50-engine-transmission/5302-spark-arrestor-help.html Sun, 05 Sep 2010 00:51:59 GMT I just got a 2008 kfx450r and it does not have the spark arrestor in it. I know it makes it louder but would it damage anything riding without it. I... I just got a 2008 kfx450r and it does not have the spark arrestor in it. I know it makes it louder but would it damage anything riding without it. I plan on riding it before I have the chance to buy a spark arrestor for it. Also how much louder is it with the spark arrestor out then with it in (decibel level). ]]> Engine and Transmission NHRider http://www.kfx450central.com/forum/50-engine-transmission/5302-spark-arrestor-help.html http://www.kfx450central.com/forum/50-engine-transmission/5290-kfx-engine-mods-help.html Sat, 21 Aug 2010 02:30:18 GMT hey. im new to owning a kfx and would really like to wake it up power wise. please let me know which mods are definatly worth my time. and does... hey. im new to owning a kfx and would really like to wake it up power wise. please let me know which mods are definatly worth my time. and does putting kx cams in help much? ]]> Engine and Transmission yanta318-450r http://www.kfx450central.com/forum/50-engine-transmission/5290-kfx-engine-mods-help.html http://www.kfx450central.com/forum/50-engine-transmission/5289-best-engine-mod-you-can-do-your-kfx-450-a.html Fri, 20 Aug 2010 16:25:48 GMT cr 500 in an aluminum frame modern mx quad! Image: http://i971.photobucket.com/albums/ae198/robhtg/d733cd8c.jpg cr 500 in an aluminum frame modern mx quad!
]]> Engine and Transmission Sledneck253 http://www.kfx450central.com/forum/50-engine-transmission/5289-best-engine-mod-you-can-do-your-kfx-450-a.html http://www.kfx450central.com/forum/50-engine-transmission/5285-ques-people-dasa-pipe.html Fri, 20 Aug 2010 00:52:16 GMT I bought my kfx used and looks like it has the classic Dasa pipe and has the quiet core in it. Im going to a dyno soon should i take the quiet core... I bought my kfx used and looks like it has the classic Dasa pipe and has the quiet core in it. Im going to a dyno soon should i take the quiet core out? and put a screen thing in. Ive heard the quiet core might take away power.. ]]> Engine and Transmission twincat800 http://www.kfx450central.com/forum/50-engine-transmission/5285-ques-people-dasa-pipe.html http://www.kfx450central.com/forum/50-engine-transmission/5280-bough-08-kfx-many-mods-need-help-got-ques.html Wed, 18 Aug 2010 02:31:39 GMT I just bought this quad has the following upgrades: DASA Full Exhaust, Stage 2 Hotcams, Larger coil, ported and polished head (dont know where from),... I just bought this quad has the following upgrades: DASA Full Exhaust, Stage 2 Hotcams, Larger coil, ported and polished head (dont know where from), Je 12.8:1 stock bore piston, Power commander3 and some sort of aluminum intake box (looks good, custom all aluminum but prob not good for power), dyno tuned and air fuel waves between 12.7 and 13.2 (so it seems ok). 1st ques: Quad felt good and powerful but after riding a little while for sure lost power, do you guys think the exhaust making the aluminum air box couldve signifacantly couldve slowed the quad down (the air did get a little cooler if that helps)? By slowed down im talking having trouble beating a friends stock 09 yfz450 with baffle out and lid off. 2nd: for having all these mods it seems like it should be faster.. i have a dvx400 built (47hp 31tq but dynos read different) but technically not as built as much as this thing and it just seems like it should be faster.. a guy with same mods but stock piston and FCI intake says he got 51hp and with these mods that what I would honestly expect but it doesnt quite feel like it?My problems could just be my intake not being as good as the FCI which im sure i will eventually get but let me hear everyones input on what i have for now. One last thing, after shutting it off the fan did come on after about a minute maybe? and stayed of for what seemed like a long time, maybe running too hot, idk? ]]> Engine and Transmission twincat800 http://www.kfx450central.com/forum/50-engine-transmission/5280-bough-08-kfx-many-mods-need-help-got-ques.html