Kmx125 'The in the meantime project'

Howie · Post by **Howie** » Thu Mar 04, 2010 9:09 pm

As i'm sitting round twiddling my thumbs, waiting for bits to come back for my Kr1 (current project) & waiting for bits for my Ke175 (long term project) to turn up on ebay etc, I decided to start work on my trusty (but completely knackered) Kmx.

It all started just before winter (if I remember rightly) when I got the kmx out of the shed & tried to start it. The Kmx usually would start 2nd or 3rd kick but the bastard decided it just wasn't going to!

After checking all the normal stuff I then decided to do a compression test, this came in very low at 85psi, so I decided to whip the head & barrel off & thats when it all started to go tits up

The barrel was scored (quite deeply) But the piston & rings were in sound condition

I hadn't touched the engine since I bought it (7 years ago?) And it had never let me down, so it seems the last owner replaced the piston etc but ignored the barrel

Anyway, so one thing led to another & I decided to give the Kmx a bit of TLC by stripping it completely, starting with the engine, ho ho ho.

First pic, here is my scabby old Kmx (88 model)
[img][img]http://i800.photobucket.com/albums/yy28 ... ie/081.jpg[/img][/img]

It was still running in this pic

Heres a pic of the engine minus its barrel
[img][img]http://i800.photobucket.com/albums/yy28 ... /021-1.jpg[/img][/img]
Over the years I have picked up bits & bobs, like oil seals & gaskets etc off ebay, bloody glad I did but I wasn't expecting this-
[img][img]http://i800.photobucket.com/albums/yy28 ... /024-1.jpg[/img][/img]
As there was no bits of metal in the oil I drained or any bits stuck to crank cases etc, this was put back on

Oh well the bike worked yada yada.

I always thought the gear shift shaft was a little bent &
[img][img]http://i800.photobucket.com/albums/yy28 ... /023-2.jpg[/img][/img]
[img][img]http://i800.photobucket.com/albums/yy28 ... ie/025.jpg[/img][/img]

It was

Anyway positive stuff, done the switch gear, stripped back to metal, primed & tough blacked (nice & cheap

), maybe I should have cleaned the actual switches

[img][img]http://i800.photobucket.com/albums/yy28 ... ie/027.jpg[/img][/img]
But lets not go mad eh?
Finally, the KIPS mechanism, here is a pic of the cog, can anyone spot the problem here? Honestly, this is how it came off
[img][img]http://i800.photobucket.com/albums/yy28 ... ie/026.jpg[/img][/img]

It appears that the pin has been glued on(?!) Why glue the pin on here? why not put it back in its hole? Am I missing something? Bloody motorcycles!

Howie

pablo · Post by **pablo** » Thu Mar 04, 2010 10:10 pm

Good luck Howie mate it would seem you have a lot on your plate there

The KMX was a great little bike and there were loads of them so bits should'nt be too hard to come by

The only thing is they were all owned by young'ns who could'nt afford to maintain them properly so they got a bit of a hard time

I've done it meself

Howie · Post by **Howie** » Sun Aug 29, 2010 10:06 pm

Hey hey.

The Kmx passed its mot yesterday. Put 70 miles on it for good luck & another 20 today, got to get the engine run in, can't be putting up with 45mph @ 5000rpm for too long

I'll post a pic tomoz. It doesn't look much different, just a little bit neater

Anyway, thats me sorted for winter riding, bring on the snow

garye345 · Post by **garye345** » Mon Sep 06, 2010 9:21 pm

What are they like to derestrict Howie?

Gonzohop · Post by **Gonzohop** » Tue Sep 07, 2010 8:07 am

From what I can remember from my misspent yoof, the KMX200 engine slotted right in...

Ahh, happy days around Wareham forest...

Howie · Post by **Howie** » Tue Sep 07, 2010 1:06 pm

What are they like to derestrict Howie?

Quite straight forward really but once again different people have different ideas. I suppose it depends on the year & destination of the bike?

I have an after market expansion pipe on mine as the original has a washer welded inside that I couldn't be bothered to grind out

I also rebuilt my kips setup using parts from the full power 'A' model. The carb is standard as is the (current) gearing but I do have a few sprockets laying about to fiddle with soon (first gear on standard sprockets is a complete waste of time!)

Even de-restricted the best I can hope for is 23-24bhp, which is about double what the standard kmx B puts out.

And yes Gonzohop, the 200 lump fits straight in