Author Topic: My 88/91 KX250 project  (Read 18856 times)

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Offline Caddy 16v

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Re: My 88/91 KX250 project
« Reply #30 on: June 01, 2011, 06:19:18 PM »
A couple updates, got a front number plate, the proper rear shock (race tech revalve) and some Cycra handguards, also had my forks rebuilt.









1991 KX250

Motorrad

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Re: My 88/91 KX250 project
« Reply #31 on: June 02, 2011, 02:32:28 AM »
Are the bars as bent as they look in that last picture?? 


Offline Caddy 16v

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Re: My 88/91 KX250 project
« Reply #32 on: June 02, 2011, 06:42:39 AM »
The left side is bent, I was already considering to replace it, think I'll get a new one without the middle strut. Maybe a pro taper or something like that as long as it's not too expensive.
1991 KX250

Motorrad

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Re: My 88/91 KX250 project
« Reply #33 on: June 02, 2011, 06:52:07 AM »
The left side is bent, I was already considering to replace it, think I'll get a new one without the middle strut. Maybe a pro taper or something like that as long as it's not too expensive.

I have straightened bars worse than that...   Large hammer. and a buddy to hold the front wheel   :-D


Dont forget most protapers are bigger diameter on the mount.. so youll be buying those as well..

Offline snoopjonnyjon

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Re: My 88/91 KX250 project
« Reply #34 on: June 02, 2011, 07:49:44 AM »
If you're on a tight budget, most shops have steel bars for $20-30. If you don't crash much, there's nothing wrong with them.

Offline Caddy 16v

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Re: My 88/91 KX250 project
« Reply #35 on: July 05, 2011, 08:30:11 AM »
Hi,

so I have been riding it for a while and got over the fouling plugs problem but now something else buggs me.

Instead of having the 91 KX250 swingarm + linkage in there it appears to be out of a 91 KX500 and since I swapped the shock to the 91 KX250 one it's been sitting too low :?
Now for the real question: Anyone know if the linkages and length of the swingarm between the 250 and 500 are different? I measured the swingarm and linkage from my 88 KX250 and they apprear to be the exact same one, so did it change in 90-91 or is it still the same!?

With the KX500 shock in there it wasn't sitting low at all but I think the spring is a stiffer one, I could change that spring into the 250 shock but don't know if that would mess with the internals??

To add to the whole frustration is I adjusted the low speed compression clicker on that 250 shock and while I turned it all the way out some moisture formed around the screw and now the SUCKER won't turn in anymore from all the way out, so I'm riding around with fully soft compression :x


All that is really driving me up the walls, takes all the fun out, it just eats all my money, just wants more and more and more...

Sorry for the vent, any suggestions would be greatly apprechiated!

Bjoern
1991 KX250

Offline Caddy 16v

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Re: My 88/91 KX250 project
« Reply #36 on: September 16, 2011, 06:54:29 AM »
A little update, finally got the right swingarm and linkage, now it handles like it is supposed to. :-D Only waiting on my rear master cylinder rebuilt kit (of coarse they had to ship the wrong one) and I'm good to go again. My little mx track is starting to grow over from all the non riding... also made some fork guards out of pipe a while ago.

1991 KX250

Offline Caddy 16v

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Re: My 88/91 KX250 project
« Reply #37 on: May 07, 2013, 12:44:38 PM »
...has been awhile, added an oversized tank and wider footpegs:


1991 KX250

Offline motopunk

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Re: My 88/91 KX250 project
« Reply #38 on: May 07, 2013, 05:53:56 PM »
250 and 500 swing arms are the same 87- 93 . the shock and linkage of 87-89 kx250 (=kx500 87-2004) is different to the 90-93 kx125/250 linkage. get the right one and the problem is gone.  8-)
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  ---

Offline Caddy 16v

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Re: My 88/91 KX250 project
« Reply #39 on: May 12, 2013, 03:01:07 PM »
I replaced the swingarm and linkage with the right one almost 2 years ago, so it's been great ever since! :-)
1991 KX250

Offline motopunk

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Re: My 88/91 KX250 project
« Reply #40 on: May 12, 2013, 04:56:14 PM »
ftp://
I replaced the swingarm and linkage with the right one almost 2 years ago, so it's been great ever since! :-)

 :-D... i´m glad to see pics of your finished bike...
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  ---

Offline Caddy 16v

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Re: My 88/91 KX250 project
« Reply #41 on: September 24, 2015, 01:04:45 PM »
After more than 2 years with no updates, here is how it sits now. New seat cover and a couple other things like improved upper engine mount and some new bearings. Just little things to make it more reliable.



1991 KX250

Offline SOHC

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Re: My 88/91 KX250 project
« Reply #42 on: October 20, 2015, 08:46:12 AM »
I like the green forks, how did you polish the plastics?

Offline Caddy 16v

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Re: My 88/91 KX250 project
« Reply #43 on: October 24, 2015, 06:18:39 AM »
Initially I used Mr Clean magic eraser pads. Every now and then I clean the plastics with  303 Aerospace Protectant, leaves them really shiny!
1991 KX250