TE/TC 2014 TE300 Re-fresh

Well after the last local race in 100 degree heat. I figured It may be a good time to take a short break...well maybe just for enduro/xc...trials is still going strong.
My 2014 TE300 now has @ 3300 miles and is at 190 hours and untouched inside. Photos will come later. I bought a complete gasket set from GP Motos, so what ever I need I have.
Had a leaky right side secondary cover so i stripped down the right side, gasket was all trashed all else looks good water pump seal PV control, clutch, kick starter all good. Opened left side starter motor needed service along with all the gear assys. all looked good no corrosion , stator looks fine pickup looks good with only a few shavings stuck to the magnetic Left side good. felt some carbon up in the PV itself and was going to pull the piston anyway. cylinder looks great PV was not bound and had full throw but was carbon fouled and is normal when you let it go so long the carbon actually touched the piston and my second ring was completely in compressed and stuck position, so I was on one ring the top one. The piston has a lot of blow by and actual carbon build up in the side cavities, the crown has a fairly thick layer of carbon evenly spread across the top, the cylinder head was mostly clean with only a ridge of carbon on the exhaust side.
BR7EIX plug, engine mostly run on 40:1 but for a few months now I went to 50:1 and will continue that with maxima super m. pump premium. anyway all else looks great. will order new piston kit and reassemble asap. I use the OEM 35 P and 162 main with whichever needle the OEM chart says for 4000 ft and 75deg but one setting leaner. will finish to clean up PV and re assemble the cylinder. PS the PV setup is virtually identical to my 98 250EXC except for the closed inside gear drive for the secondary exhaust ports.

Dude shows how tough that motor is.... 190 not easy hours.... I like the 1 ring piston... LMAO..... love the writeup

Additional note ----caliper on compressed base gasket(s) spots reads @25 1000ths, the bases in the kit seem to get me exact, but I'm asking. Uncompressed I can use the provided 25 + the 3 to get uncompressed 28. what you guys think? after torque compressed I assume it will come in @ 25 which is what it was. Seems like a good assumption? Or should I go to 30 and assume it will compress under torque to @ 25?
I want to keep it OEM, no testing tooling changing just OEM stock compression/port timing.

I'd shoot an email to Jeff Slavens and ask him. He's usually pretty quick to respond and will know.

On the old motor I always used the middle one... Seems like it was .15, .25 &.3

before disassembly note supporting title sponsor due to lack of sleep....

PV "flapper" this is the piston side face, you can see evidence marks where it touched the piston on the carbon build up.

Cumbustion chamber just a wall of carbon on the ex side.


view of RH side before I removed the secondary cover , the bullet proof alloy impeller from checkpoint nice piece!!! been in for a while now. also red ZipTy XF2 coolant.
disassembled clutch to inspect all good. CV4 hoses all good. secondary gasket was strangely disintegrated and leaky up front you can see the dust build up on the leaked oil

http://slavensracing.com/shop/water-pump-impeller-for-ktmhusaberg-2-strokes-by-checkpoint/

How does the piston and rings look ? Did you measure them to see how much they have worn ? Just curious so I know how many hours to pull my top end at .

I'll snap a shot of the piston asap
but here how it is described

my second ring was completely in compressed and stuck position, so I was on one ring the top one. The piston has a lot of blow by and actual carbon build up in the side cavities, the crown has a fairly thick layer of carbon evenly spread across the top,

piston views

i am thinking to go with oem spec full synth,, I did run motul 800 for a while but mostly its been super m

I think it looks really good.... Motul 800 is very good

you guys did note that the lower ring is in and compressed , frozen in place. Less friction more HP....hahahaha single ring racing piston!!!

Just did mine at 92 hours and it looked awesome for 92. I was surprised. I'm surprised you didn't have bigger problems after that many hours. Apparently good ol super m ain't so bad!

I also think about the fuel we get from the pump now, inconsistent, 10% alcohol, old, new, dirty etc etc . I wish I could strap on a feeder line and use VP T2 all the time. Its just virtually impossible for real world use for me.

Agreed. Unfortunately mine has been run mostly on 91 pump gas and it is quite noticeable when I run better fuel but I wouldn't be able to ride no where near as much cause the closest vp fuel from me is about 30 minutes from where I live and that's almost never convenient. Ands it pretty pricey. I can buy a lot of pump gas for the same price of 5 gallons of vp.

We actually have a VP station in Pacific Beach San Diego, they don't have "race-race" gas like C-12 or U4, but they do have their 100 Street Blaze unleaded at the pump. Last I got it , it was like $7 a gallon..... I used it when I could in my Italian 4 stroke huskys, they always ran better with that stuff.

PS--- When I'm done refreshing the 2014 TE300 anyone interested in buying her.
Still to come ZipTy fork service and latest mod configuration, full suspension linkage check and lube, overall clean up and new tires (will be used asap) . Many enhancement additions, inquire in PM, that dang TX300 is looking really sweet.