2014 KTM 450 sxf piston 150 hours

casper
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casper
Edited Date/Time 3/5/2019 10:21am
Just got around to replacing my piston at 150 hours on the dot. How does it look? Doesn't seem to have much wear. Ran Shell Rotella since new.










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dkurtd
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dkurtd 3/3/2019 9:52am
3/3/2019 9:52am
I'd say that looks pretty good for 150hrs. Bet it would have made it many more.
walent215
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walent215 3/3/2019 10:09am
3/3/2019 10:09am
cylinder looks great...piston definitely shows wear though. Did you put some calipers to it?
Jbulz
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Jbulz 3/3/2019 11:02am
3/3/2019 11:02am
Looks like you were burning some oil. That's a lot of carbon buildup
CarlinoJoeVideo
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CarlinoJoeVideo 3/3/2019 2:28pm
3/3/2019 2:28pm
Very impressive!

The carbon could just be bad fuel or if it’s oil, I’ve had valve guide seals wear. But that was on a 250SXF.

Are you going to replace the crank?

The Shop

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Paw Paw 271
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Paw Paw 271 3/3/2019 2:58pm
3/3/2019 2:58pm
Overall it all looks good for that many hours.
O do suggest you checking the cylinder as I seem to see a ring wear ridge at the top of the cylinder and if so, it could cause issues when new rings are installed if it is no addressed.

Paw Paw
casper
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casper 3/4/2019 9:35pm
3/4/2019 9:35pm Edited Date/Time 3/5/2019 10:21am
Carbon build up might be from pump gas I use. I always run 91, but most times it's from a generic gas station(Not Mobil or Shell) like the gas station that's right near Pala Raceway.

After posting this, I did what everyone fears when they are putting a new piston in... I dropped the piston pin C-clip into the crankcase! I had the crank stuffed with paper towels and it managed to get by. I had to fish around with my magnetic tip pickup tool for over 20 minutes before I got it out. This tool is worth its weight in gold!




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SrfNdirt
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SrfNdirt 3/6/2019 10:12am
3/6/2019 10:12am
White or blue bottle Rotella?
casper
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casper 3/6/2019 10:29am
3/6/2019 10:29am
Both. I run blue in my street bike and white in my dirt bikes, but switch it up depending on what I have lying around in my garage.
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