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Author Topic: KX250 AF finished  (Read 7824 times)

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Offline kxs in oz

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KX250 AF finished
« on: September 22, 2009, 09:56:03 AM »
Just finished the KX250 AF heres a couple of pics will ride this weekend see how it handles 2009 kx250f  frame 03 kx250 motor as this is the best to bigbore got 310cc pistons coming ohlins suspension excel wheels
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Offline Danger4u2

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Re: KX250 AF finished
« Reply #1 on: September 22, 2009, 10:17:11 AM »
Looks new, nice work.
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Offline DoldGuy

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Re: KX250 AF finished
« Reply #2 on: September 22, 2009, 10:21:51 AM »
I like! :-D
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Offline BDI

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Re: KX250 AF finished
« Reply #3 on: September 22, 2009, 10:40:04 AM »
Very SexAAAAA!  8-)
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Offline jfabmotorsports.com

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Re: KX250 AF finished
« Reply #4 on: September 22, 2009, 02:44:37 PM »
SWEEEEET :-D
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Offline don46

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Re: KX250 AF finished
« Reply #5 on: September 22, 2009, 02:58:04 PM »
I hope you have better success with your big bore than I had with mine. Mines a 06 and it never made it more than 10 minutes. the builder finally gave up, the transfers are to close together and when you bore it that big they get closer, it kept hooking a ring and tearing up the cylinder and head. The 03 is more like the 99-02 that is a pretty common 310 big bore.

Like the bike, got the parts to build me one, maybe this winter.
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Offline kxs in oz

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Re: KX250 AF finished
« Reply #6 on: September 22, 2009, 03:50:03 PM »
Yer i looked at using 05 / 07 motor but when i found out they are oring head gasket and the port were so close i got a 03 motor that the bigbore pistons were made for so i would have no problems with what you have had
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Offline cigar

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Re: KX250 AF finished
« Reply #7 on: October 02, 2009, 01:28:19 PM »
The 2 stroke transplant makes the bike look so trick. One of the nicest dirt bikes I've seen. Good job man..
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Offline kx.man

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Re: KX250 AF finished
« Reply #8 on: October 24, 2009, 09:37:15 AM »
nice bike, did you do your conversion yourself or did you have someone do ot for you?
« Last Edit: October 24, 2009, 02:37:10 PM by kx.man »
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Offline kx10013

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Re: KX250 AF finished
« Reply #9 on: October 24, 2009, 02:24:50 PM »
That is one sweet bike man.  :mrgreen:
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Offline kxs in oz

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Re: KX250 AF finished
« Reply #10 on: November 06, 2009, 03:44:37 PM »
Quote from: kx.man on October 24, 2009, 09:37:15 AM
nice bike, did you do your conversion yourself or did you have someone do ot for you?
The conversion i did myself i dont like to have things done when i have no control or input into the work that needs to be done like on a conversion when you are cutting and rewelding i am now rebuilding the motor at the same time bigboring it to 285 as i was told the 310 will not rev out as well and can vibrate some will let you know how it goes
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Offline Watson777

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Re: KX250 AF finished
« Reply #11 on: December 04, 2009, 11:21:32 AM »
That is a SWEET looking bike! Most everything I have seen on this site so far is awesome. Everyone does great work! I am just getting parts and things together to do a KX250AF conversion. I have done a little research and found a few how to guides but nothing that is really detailed and most articles are for the 500AF. Do you have to cut and re-weld the front of the cradle on the 250F chassis to fit the 250 motor like you do to fit the 500 motor in the 450 chassis? Also if anyone knows of a 250F rolling chassis for a decent price I'd like to know about it! Thanks!
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Offline kxs in oz

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Re: KX250 AF finished
« Reply #12 on: December 05, 2009, 09:40:44 PM »
Yes you will need to cut and raise the Y spar section and make engine mounts to suit if you have a tig and can weld good you wont find it to hard to do
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