Author Topic: 2000 kx250 restoration project looking for help with motor build guidance  (Read 9950 times)

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Offline 1000rrstunna

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Hi guys new to this forum just scored a 2000kx 250 for 900$..  the bike is in excellent condition in fact it almost looks new and has the factory graphics on it still!! but there is one issue... I have parts to make a running motor but im not sure the best route to go about this..

the bike came with the following

clymer manual
2 cylinder jugs needing replate but complete with powervalves and covers
1 cyl head
a whole set of cases dis assembled # stamped on case (kx250LE011495)
gears and all parts seem to be there and all in boxes but i have no clue how it goes together and if the bearings are good in the cases...
whole bottom end still assembled locked crank # stamped on case ( KX250KE020346)
stator
clutch cover
stator cover
clutches ( 3 full sets baskets and  all looking to be  in decent shape )
New stock bore wiesco piston set stock bore new in box
entire gasket set new in box
reed valves
carb in excellent shape

what i have done so far
Sent the  piston ( for sizing to new cyl plating) one cyl head and jug  out to milennium for a powervalve service, inspection,cleaning and re-plate. i sent the one #'ed 1851 which is the 98/99 head vs the #1835 which is from a 97..... hope i made the right decision on that...
I also bought a wiesco crank kit for a 93-2001 kx250 with bearings for 170$

now who can help me build one good motor out of all the stuff i have or where can i buy a super detailed manual

do you guys know of any big salvage yards that may have parts if needed?

Any help is appreciated and I would be willing to donate the extra parts left over for your time plus $  or if you know of anyone who isn't going to rip me off to do the work that would also be cool

i would really like to do the build myself  I am very mechanical but this kinda scares me....  maybe I am overthinking it I have all the tools and dont bange things around like a cave man  haha

i'm in chicago il area  zipcode 60527

thanks for any help offered or suggestions 

glenn

Offline Garand1

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The very next thing you should do IMO is to get a factory Kawasaki service manual......there are a few on ebay for 25 to 30 dollars. It will help you enormously as you put things together and if you have any questions about the specs of the various parts. Keep posting your progress for us!!
« Last Edit: January 30, 2016, 09:20:44 AM by Garand1 »

Offline umberto

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Welcome to the site 1000rrstunna!  Sounds like you have a fun project on your hands.  I found that YouTube can be a big help when trying to figure out how to do things.  Something about seeing someone actually do the procedure that really helps me.  Rocky Mountain ATV/MC has a really helpful YouTube channel.  I also agree with Garand1 that you need to buy the factory service manual.  As far as used parts go, Sandblaster is a member on this site and is a very honest engine builder and part re-seller.  I would trust him with any project.  He is currently moving shops, but should be back online in a couple of weeks. 

We would love to see some pictures of your progress.  Here is a quick guide on how to do that:

http://www.kxriders.com/forums/index.php/topic,10040.0.html

Welcome aboard!
Perhaps I have a dirt bike addiction?

03 KX 250/88 KX 525/2017 KX250F - Goliath
17 KX250F/04 KX250
04 KX 250 - Lunchbox's Bike
05 KX 125/144

Offline reklessj

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Use the search there is a free download off repair manual on here somewhere saves ya a few bucks you can put into your project
My rides: 1994 KX500, 1988 T4, 1998, ZXI 1100 JETSKI, 2003 MOUNTAIN CAT 900
WIFES (Baby Fiver) rides: 2004 KTM 105SX,1992 LT250R, 1995 ZXI 900 JETSKI,  2011 RMK 600
SONS ride: 1995 YZ125,2002 RM 250
other rides: 2007 RMZ450 RC Ediition, 2003 RMK700

Offline swordcombat

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Sounds fun , im also doing the same but my bike was a wreck.
I have the clymer manual and think its very well detailed TBH.
Regarding the official kawasaki manual , i have no idea how it is.

Help wise you seem to have everything covered , taking the bottom of the engine apart is pretty easy with the right tools , this is my first bike i have every stripped down.
But the tools are expensive , i bought a crank case splitter , fly wheel puller , 8mm t handle spanner , clutch basket holder and now need a blind bearing puller.
Yes i know a waste if you use them only once , but if you plan on building more bikes then they save you a huge amount in the long run.
Im UK based so dont have access to sand blaster and his amazing engine skills.
Depending on what your going for i would  get the engine vapour blasted for thar new look , and do you want it original looking?
Im going for fully custom and will start a thread next week.

Also please start a thread as we all love progress pics

Offline swordcombat

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Also if you have a cylinder barrell your selling and willing to send to UK
Please let me know as mine is sleeved and i would prefer one were i can get re plated.


Offline swordcombat

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Regarding the parts in boxes , best thing to do is lay them all out on a table
Then either look in your manual or go on a kawasaki dealer site and they have detailed pics blown up of the gearbox and whole bike.

Seems very scary at first but just take your time , and by the sounds of things you have enough parts to build a whole other engine which is good.

Look for snapped teeth and broken gears , broke clips , heavy notches in the clutch basket.

Best thing to do would be make a rebuild thread , then if you have any concerns post up pics and an expert on here can give you the relevant information you need.

Offline motopunk

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    • www.der-motopunk.de.tl
www.cmsnl.com   or   www.partzilla.com    look for your bike there.. you can find some new parts, you may need and you can use the shematics, to see how to assemble the parts in right order ...   :wink:
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 1000rrstunna

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Got a manual on ebay today so I have both now... Stripped the extra set of cases and dropped them off at my buddy's who works for Lexus he is going to walnut blast them and hot tank them tomorrow... Going. To also drop off the assembled bottom end at my fathers friends house who builds tons of 2stroke kart motors... He will swap all the parts for me and install the new crank ect... Hopefully I will have a good bottom end by this weekend I also ordered A water pump rebuild kit on ebay and some close out graphics so she looks good on the cheap!

Offline 1000rrstunna

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As it started today... Only have gotten some mint takeoff tires (free) from my buddy who is sponsored  :-D and the sticker kit also showed. Waiting on tons more parts lol. So I did what I could.

Offline 1000rrstunna

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Re: 2000 kx250 restoration project looking for help with motor build guidance
« Reply #10 on: February 02, 2016, 05:40:34 PM »


Part of the 32$ graphic kit installed the shrouds are oem and were literally mint! So is all the other plastic minus rear fender which is a new ufo unit that came on the bike


And a teaser of the yz250 restoration.... I have big $ into this one...

Offline 1000rrstunna

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Re: 2000 kx250 restoration project looking for help with motor build guidance
« Reply #11 on: February 02, 2016, 05:43:12 PM »
Does anyone on the forum do shock rebuilds?? The rear is leaking bad and it's not somthing I want to tackle but I don't want to spend a fortune either...

Offline subliminaltrips

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Re: 2000 kx250 restoration project looking for help with motor build guidance
« Reply #12 on: February 03, 2016, 06:43:59 AM »
http://www.manualslib.com/download/849706/Kawasaki-Kx250.html here is the link i used for my manual, just an fyi

Offline umberto

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Re: 2000 kx250 restoration project looking for help with motor build guidance
« Reply #13 on: February 03, 2016, 07:31:11 AM »
It's actually a lot easier than you think. I used this video from Rocky Mountain, and was able to rebuild mine without any issues. I used an Pivot Works shock rebuild kit that was $66.95, and the local Kawasaki shop charged me $15 to recharge the nitrogen.

https://m.youtube.com/watch?v=0_InEnom2ec

Shock Kit:

https://www.rockymountainatvmc.com/p/1053/39529/Pivot-Works-Shock-Rebuild-Kit?term=shock+rebuild+kit
« Last Edit: February 03, 2016, 07:42:37 AM by umberto »
Perhaps I have a dirt bike addiction?

03 KX 250/88 KX 525/2017 KX250F - Goliath
17 KX250F/04 KX250
04 KX 250 - Lunchbox's Bike
05 KX 125/144