Author Topic: DK 2007 kx250/500 sf  (Read 15568 times)

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Offline zz3gmc

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Re: DK 2007 kx250/500 sf
« Reply #15 on: March 29, 2014, 01:00:23 PM »
After decades of racing enduros on mostly 250s a few 200s and a 125 I find that my 500 hybrid is the best bike Ive ever had! It handles almost as well as when it was a 250. Eats up whoop sections better than when it was a 250 and handles bar banging tight woods extremely well! My engine is pretty much stock with the exception of a heavy flywheel weight. Its geared 14/51 which allows me to pull taller gears and smooths out the power delivery quite nicely. Im usually less tired after racing the 500 than when on the 250, its allowed me to relax more and concentrate on the trail.

Offline ID KX500

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Re: DK 2007 kx250/500 sf
« Reply #16 on: March 29, 2014, 03:50:10 PM »
After decades of racing enduros on mostly 250s a few 200s and a 125 I find that my 500 hybrid is the best bike Ive ever had! It handles almost as well as when it was a 250. Eats up whoop sections better than when it was a 250 and handles bar banging tight woods extremely well! My engine is pretty much stock with the exception of a heavy flywheel weight. Its geared 14/51 which allows me to pull taller gears and smooths out the power delivery quite nicely. Im usually less tired after racing the 500 than when on the 250, its allowed me to relax more and concentrate on the trail.

So nice to hear,, this is why I have used mine for a trail bike.
"Endeavor to persevere."

Offline splatter

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Re: DK 2007 kx250/500 sf
« Reply #17 on: April 10, 2014, 06:00:15 AM »
finaly got some time to make a little progress in the garage :)


cut the swingarm to the width of the engine and got it mountet




put in a 0,7mm feeler gauge in between on the picture here


but is that enough distance? as you can see there is a little more room tha 0,7mm mayby around 1mm or so, but will it be enough?
« Last Edit: April 10, 2014, 06:20:28 AM by splatter »

Offline splatter

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Re: DK 2007 kx250/500 sf
« Reply #18 on: April 10, 2014, 07:02:10 AM »
Got the intake mountet too but not really happy about the angle :/ will the angle give me a problem ? thinking of float level or over floating maybe?






Another expert question  :-D : is there different dimensions from old to newer engines exhaustport outlet ? thalking about the outside diameter off the pipe header.
bought an old pipe that i cut up and i think its going to fit nicely on the bike (it has a SPES sticker om the silencer)
the diameter on it is smaller than the stock 86 exhaust?

its pretty rusty now but not rotten ;)




Offline motopunk

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Re: DK 2007 kx250/500 sf
« Reply #19 on: April 10, 2014, 01:56:57 PM »
nice progress... :-)   you have only to clear, that the swing arm can move free up and down without contact to the engine case... what i can see in your pics is ok and would work correctly...

but you need a bigger washer to hold your kickstarter on the shaft...  :wink:

what exhaust is this? looks like 250.. exhaust ports from 86-2004 kx500 are all the same 55mm outer and 49,5mm inner diameter


clearing your carb holder problem is this way: make a spline like i did on my bike, that the carb lines up perfect to carb boot und it would give perfect clearance also to the gas tank... my spline is 10mm to 2mm ,


http://img.webme.com/pic/d/der-motopunk/foto0318.jpg
« Last Edit: April 11, 2014, 07:24:29 AM by motopunk »
big 2 stroke bikes are weapons for real men, who don´t fear death or devil. ;O)
´83 kx250, ´87 kx250 (with 360 big bore), 87 kx500, ´93 kx500 sfc

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Offline splatter

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Re: DK 2007 kx250/500 sf
« Reply #20 on: April 10, 2014, 06:31:59 PM »
okay yes it clears the case okay only touching the gasket sticking out from the cluchcover :)7

haha im going to use klr 600 kickstarter like you sugested erlier ;)

the guy told me it was from a 500 but i wil be measuring it later to compare
somthing tels me you are propperly right :/

that carb solution mite work for me too :)
thanks

Offline motopunk

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Re: DK 2007 kx250/500 sf
« Reply #21 on: April 11, 2014, 07:33:18 AM »
i had a long time to figure it out with the spline.  i use the oem kx500 carb holder (87-2004) works great for the 93 frame ...
big 2 stroke bikes are weapons for real men, who don´t fear death or devil. ;O)
´83 kx250, ´87 kx250 (with 360 big bore), 87 kx500, ´93 kx500 sfc

---  www.der-motopunk.de.tl  ---