2000 kx250/k5 conversion

[kranker1450]

Okay i am going to pick up the 2000 KX250 donor bike this weekend for the k5 conversion. I am looking at a early 90's k5. It is all there but rough. Runs but will need a rebuild. What would be a reasonable price for the K5. I am sure I will have alot more questions as i go but so please bare with me. i have been reading alot on here. can you get the pipe from service honda or direct from FMF?

Thanks everyone.

I will get some pics of the donor bike after i pick it up.

[motopunk]

... better you buy a cr500 pipe from fmf or pro circuit and modify it a little bit for the kx...  thats the only diference what the service-kawasaki-pipe is.  the pipes are exlusive made by fmf, only for service-kawasaki. and its very hard to get one of this expensive exhausts. i´ve tried it at the european importeur for service-kawasaki . 380,- € only for the pipe...not in stock and i should wait 3 months!?!

so i bought a cheap used cr500 pipe and new pro-circuit-304-silencer, cut off the big exhaust-bushing off an old 250-pipe and after little mashining and welding ... voila... runs and sound great. my costs for complete exhaust € 200,- 

and in the end my coversion looks like an oem-bike . 

[kranker1450]

Thanks Moto for the info! Any year honda pipe i should look for? I will head that route.

[motopunk]

any cr500 pipe ´1989-2001 will work  ...   

[kranker1450]

Thanks again Moto! From what i have been reading sounds like the cr silencer also. When modifing the pipe do you just need to change out the end that goes into the cylinder for the kx one? Plus alittle pushing and pulling i would expect.

Thanks again

[motopunk]

yes... complete honda-exhaust with all needed mods to fit... 

here you can see my ´93-coversion some steps you could do also on your bike... http://der-motopunk.de.tl/projekt-kx500-.htm

[kranker1450]

Awesome , Thanks Moto for the link!

[motopunk]

  ...  cant wait to see some pics of your project...

[kranker1450]

I will get some posted of the donor 250.    I picked it up sat. 2000 kx250 blown motor. for $500. Not to bad. Plus i have a 2001 kx250 so all my parts will interchange between the 2 making having extra parts on hand easier.    I am just waiting on the k5 too see if i can get it for what i can pay.

Thanks again for the help i am sure i will be asking for more.

[motopunk]

I will get some posted of the donor 250.    I picked it up sat. 2000 kx250 blown motor. for $500. Not to bad. Plus i have a 2001 kx250 so all my parts will interchange between the 2 making having extra parts on hand easier.    I am just waiting on the k5 too see if i can get it for what i can pay.

Thanks again for the help i am sure i will be asking for more.

and you can also build a good 250.. ends up with 2 identic bikes 250 and 500... 

[kranker1450]

Yeah the  01 250 is what i ride now it is pretty fresh with new top end and suspension etc. I will be like a factory rider only with 13yr old bikes. lol  

[kranker1450]

Okay so a little back ground first. i stopped racing motocross 20 years ago. At that time i was racing a 93 KX500. My wife at the time didnt like the risk and we just bought a house and were starting a family so racing and the K5 went. 20 Yrs later i am divorced and the kids are doing well so i thought it was time i started riding again. Dont want a 4 stroke so i bought a 2001 kKX250 gave it some love and have been riding it since May. Man have i missed riding dirt bikes. I really wished i wouldnt have waited 20 yrs to start back up. Here is the 01 KX250 i have been riding.



It has been really fun to ride and i have been having a blast but, I really miss the bark of the K5. So i found this place and thought i would try to do my own conversion. I really like the 99-2001 KX250 chassis. So i figured that is the chassis i would use plus then i would have 2 of the same yr chassis so they would share all of the parts minus motors.

Here is the donor bike i just bought this saturday. i picked it up for $500 it is a 2000 KX250 that has a blown motor but everything else is there and in pretty good shape.



Now all i need is the K5. lol

Thanks for all of the info.

[motopunk]

 ... thats what i was also called on race last weekend as i rode my ´87 with the 360cc engine to the 3.place in the evo-cup...

in spring i sold my good old ´97 kx250 that i rode 11 years. and i can say, it needs not the newest bike. only a good rider to ride it realy fast ...  

now i own a restored and light modified ´83 kx250, ´87 kx250  and my just from ebay-parts and new spareparts builded kx500sf conversion in the ´93 kx 250-chassis, what i started only with a frame. because i ever wanted a k5,( but i had not enough money in 2003 to buy one of the last european models) ...all bikes run very smooth and powerful...    

[motopunk]

Okay so a little back ground first. i stopped racing motocross 20 years ago. At that time i was racing a 93 KX500. My wife at the time didnt like the risk and we just bought a house and were starting a family so racing and the K5 went. 20 Yrs later i am divorced and the kids are doing well so i thought it was time i started riding again. Dont want a 4 stroke so i bought a 2001 kKX250 gave it some love and have been riding it since May. Man have i missed riding dirt bikes. I really wished i wouldnt have waited 20 yrs to start back up. Here is the 01 KX250 i have been riding.



It has been really fun to ride and i have been having a blast but, I really miss the bark of the K5. So i found this place and thought i would try to do my own conversion. I really like the 99-2001 KX250 chassis. So i figured that is the chassis i would use plus then i would have 2 of the same yr chassis so they would share all of the parts minus motors.

Here is the donor bike i just bought this saturday. i picked it up for $500 it is a 2000 KX250 that has a blown motor but everything else is there and in pretty good shape.



Now all i need is the K5. lol

Thanks for all of the info.

both bikes are in real good shape at the first look... i say, safe the 2000 kx250-engine and also fresh them up for your spares.. the time will come, when its getting hard to find oem-parts for the 2001... 

[kranker1450]

Picked up a 1990 K5. It is suppose to have a fresh topend with about 5 hours on it. It runs pretty well needs some carb work and jetting. Has plenty of compression. Rest of it is pretty rough. I think it was one of those where he just did what he had to to keep it running not much else. I am going to need a new carb intake boot. I have read that the KDX one works better for the conversion. Is there a paticular year that works best. Or what about a boyseen rad valve for the 500. I paln on using the 2000 KX250 airbox. Over all   I am happy with the purchase though and I think it will make a good donor. Plus i will give it much love. It just feel better to have a K5 again.  

Thanks for looking and the help.