Seized KLX 250

[Captain_Slash]

The guy who bought my KLX 250 posted these photos on Facebook last night saying it had seized

I saw him today in Mae Sariang and he said it was caused because the bike had burnt a lot of oil and he hadn't noticed.
Over the 76000 km that I owned it for I never found it to be using any oil and I changed it every 3000 km, he is only 25 and is giving it a lot more throttle than I was, is this the likely cause for it to suddenly be using oil?, the bike has now done 80000 km.
It will be a costly reminder for him to remember to check it frequently in future as he tells me it needs a new piston, valve and cylinder head

 

[Nightrider70]

The piston in the picture does not look like a KLX250 piston.

 

[lakota]

A similar thing happened to my KLX250 at about 30K. I had burn't a full Litre of Oil before I noticed. The engine cut out, probably a low Oil pressure sensor or something.
you could barely see the Oil being burned. a slight grey tinge but nothing substantial. With Hindsight I did notice a burning smell but I thought it was something on the Exhaust. Regular visual check of your Oil is the way to go. Expensive lesson for me too

 

[BobS]

"The piston in the picture does not look like a KLX250 piston."

I would have to agree. Unless the mechanic has an incredibly small thumb, that piston looks a lot larger than the stock bore - 72mm (2.8")

 

[jkrfjessjess]

That piston is from a Diesel engine ....

 

[CraigBKK]

The plot thickens... :?

 

[lakota]

It looks about right to me. If not then it's a Cylinder from a Wankel engine :?

 

[Nightrider70]

KLX250 Piston:


http://www.cmsnl.com/1995-e3-klx250_model12437/engine-piston_130011433/#.VMIvii5aZWo

 

[lakota]

Big Bore Kit ? ....... Very big bore Kit ?

 

[brake034]

Doesn't a KLX250 have 4 valves? The piston shown looks like a 2 valve piston IMO.

 

[Bush Pilot]

Good excuse for a 351 kit me thinks!