KX250 rebuild - after all I've ridden it half a dozen times and it's worn out

**Arronduke** · 28th January 2012, 21:33

OK.. Saturday night and some more work done.
First off its my older boys 8th birhday... lots of people.. so I do the right thing and play good Dad until about 3pm.. enough is enough time to hide in the shed, open a beer (or 10) and (play Neil Young Loud) and look at the KX. First off... I did not pay attention to the piston rings when installing them ( last night) I looked and looked again and saw no markings or differance to indicate direction so i just installed the little f#ckers (rings) . That was yesterday after a normal quota of beers... mmmm OK.

Then I woke up thnking that I have the rings upside down... NO PLEASE NO. (TOLD YOU... should of had lion red) so on the net I go... dam go away pussy page... which welcomes me.. mental note: close down the screen with big jugs! haaaa

I cant stress enough... I looked and there were no markings on the rings when I installed the little f#ckers)...(one cant be too sure after 100 beers ) LOL so once the tit page was deleted I found the wiseco pistons rings page and I am good to go, they go any way round. Other words both rings are the same and there is no right way up or down, thank fuck for that.! Hell might as well open beer... Lion Red Im thinking.

So while I am waiting for that dam spring....(last post...) I might as well install the engine and the stealth fly wheel... OK sounds sooo simple. Small problem it will not screw on and after a few beers and 1hr + trying to fit the bitch I work out its a left hand thread. Gutted (who said beer and bike go togaether) But its fitted OK once I screwed it the right (left way) way.. (dam its just like the wife... got to screw it just.. yea yea)...... OK my ass 1hr + trying trying to fit the bastard. Not happy.

Enough said... pictures...

Looks a little cleaner than when it was removed...

Scotch bright... does a great job... this was nothing but rust.

Left hand tread... MAN... I had both in the vice holding them square turning the new fly wheel but it would not work... next was 6mm tap to make sure the treads where clean and they were. Still no go. Then I thought.. left hand thread and bingo...

Got to say its starting to look like a bike.... 20 yrs old I might add.

**nzspokes** · 29th January 2012, 08:10

Originally Posted by Arronduke

Best part of the day was getting my frame etc back...

looks cool.

That photo has inspired me. Looks sweet.

Me XR is coming apart over winter.

**TrentNz** · 29th January 2012, 10:10

im telling you man its looking brand new.

**Blagger** · 30th January 2012, 00:01

Clean bike, dirty mind.

**cambocambo** · 30th January 2012, 10:20

Why do you have an old microfishe in your shed? closet librarian?

**Arronduke** · 1st February 2012, 20:51

Originally Posted by cambocambo

Why do you have an old microfishe in your shed? closet librarian?

Good question...I have the microfishe things for my old bikes... tend not to use it much now with on line links but when the shit hit the fan and I need part numbers for a 30yr old bike ... I have them!

And dont forget the exploded view that they give... worth every cent (and it did not cost many cents) !

**Blagger** · 1st February 2012, 21:32

Originally Posted by cambocambo

Why do you have an old microfishe in your shed? closet librarian?

This guy's site recommends one although as OP has said, they're getting outmoded

http://www.dansmc.com/tools2.htm

if you can get past the USA god-bothering it's a good site for those of us who don't know fuck all but want to start somewhere

I'll cheerfully admit to looking forward to new postings on progress in this thread - somewhat addictive

**Arronduke** · 11th February 2012, 21:31

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>!

**Arronduke** · 14th February 2012, 21:20

Seems like I have done lots... but looks like FA....
Howz it go.. one step forword and two back.
New water pump impalla shaft would not fit... this was not good. I thought I had installed the wrong bearing so I removed it... then measured everything (next day) when I could see..! haa

And mother fucker... shaft was over size... 8.02mm now even with a big hammer thats not going in to an 8.00mm bearing.
so I gave it a polish ... and got it to the right size.

remember what the old one looed like... and it still went... leaked coolent... small problem..

Anyway that fixed and installed... on to the clutch...

Looking cool...

OH... it Valentine's Day .... hmmm whats the best option...
1) Waste purfectly good cash on something that will rot in a few days.... naaaa
2) Say "Happy Valentine's Day" and ask for a root... naaaa that will mean I rembered.
3) Call in at the local grave yard and get some free flowers... if your good you can get the plastic ones that will last until next year... now thats thinking.
4) Go to the pub and don't come home until she's asleep... naaa that means sleeping on the lawn or in the car... never looks good to the kids.
5) ahh so dam obvious.... get the kids to cut flowers from the garden while I drink beer and work on the bike.... she might like to have a moan... and I know it won't be the same moan she does when laying horizontal... what is it with women that have two moans... ones always means trouble... Kids think they have done so well and I smile and say ..... we made an effort for you dear....! better than brought things with no perosnal touch..! worked perfectly... and it was FREE.

mean while... work done...

Motor is now closed... time to work on the carb and the plumping.... getting close I say!
One good thing is its quite a bit lighter... with all the motor parts still in the box..... haaa NOT.

And to add... an update on the kick starter... washer made to take up the 1.0mm removed from the gear surfaces... testing so far everything looks great and sound perfect... click click click.

No burred over edges on the gears... looks dam good to me.. also a new spring which was 2mm longer than the old one so that will help. Like getting the wife a cut and tuck... works for a while but eventually its gona turn to shit! A then its time to get a new model...(lighter rear end... updated CDI and a beffier front end... sounds perfect) OH and no dam rebore!! ..If I can afford it! But I am happy with the repair and it will last quite a while as it was not a rough job with a grinder like some on the net. To be honest thats where I got the idea... just wanted to do it right!

thats all folks....

**SVboy** · 15th February 2012, 19:38

Niiice-got my KX fix and valuable marriage tips too...........!

**grantman** · 20th February 2012, 20:43

Hi Arron
I hear the mighty KX is a runner !

Well done ..its looking good
Are you going to post a youtube clip of it running ?

Cheers
Grant

**Arronduke** · 22nd February 2012, 20:38

Thanks Grant..!

Cleaned up the carb last week... no one likes a dirty carb now do they? Heee what could i say about a dirty carb...

Unfortunitly i did not get any pictures of the carb... but piss easy.... OK it would be easier to do the washing and cooks some eggs bitch!
still lots to do but it goes.... and sounds good.

For a while anyway... magnet on the magneto broke.. was looking dodge so I knew stright away when there was no spark. Another is on its way from themighty USA $120... here in 8 working days. Hope to have it going for the Hamilton kids camp out.... depends on my shoulder... munted A C joint some how.

NOTHING to do with beer!

.... who posted that?

Click on the picture to see video.