Posts
108
Joined
11/16/2016
Location
Ravenna, MI
US
Ktm 5
1/1/2017 10:49am
1/1/2017 10:49am
Ok I got a 2016 ktm 250sxf that is getting orange frame, of course and a complete motor rebuild. Bottom end has 72.4 and top end has 31.9 hours and clutch has 14 hrs. If anyone has any tips tricks or ideas please feel free I plan on rebuilding entire motor so we will see what it all looks like.
My son said they were there the last 2 or 3 oil changes also and we had just put in a Hinson clutch fibers and steels so maybe that? The clutch is 14 old
I had to split the cases on my Yz250f to see that the screen was totally packed with dirt. Good luck with the build, will look good in orange frame
First time tearing down a four stroke motor besides my Chinese pitbike motor. Intake valves were both .005 and clutch side exhaust valve was a tight .005 but probably .0045 and ignition side was .006 Thats untouched since new
I often have little metal flakes in that screen. As long as it's not a ton, you should be OK. I got my tranny polished for smoothing shifting when my engine got rebuilt. Definitely inspect the gears while you have it apart.
The Shop
Got the top end off. I notice there is a little more build up on one exhaust valve more than the other, any reason?
Piston on left is original piston with 40.5 hrs then we sucked in some sand and lost compression, son was riding took a break and then would not start because no comp. Ring gap is .013 on last piston and crank side to side is .016
Everything in the clutch looked good but I did notice a lot of slop in the water pump propeller. I think I'll replace that for safe measure
Well that was pretty easy. Now just have to get some replacement parts...
Well I believe I found where the goldish flakes are coming from on the oil screen
You can see some wear on this shift fork.
Is it necessary to replace any bearings in the tranny while I'm there? 72 hrs
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