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Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc. |
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#1
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Power valves after 920 miles
My 2015 GG 250 now has 920 miles on it.
I decided to do a refresh on the top end. I've never had it apart. Ran a compression test, came out to 140psi. The power valves were really clean, a testament to how clean the SmartCarb operates. The left side power valve chamber was dry also. No spooge build up. I ran Amzoil 50:1 for a while and have now switched to LUCAS oil. Flapper had little carbon build up. Back side of flapper. |
#2
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Any pictures of the piston Girard?
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#3
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Impressive to say the least. Pretty toasty, I bet your plug looks just as golden!!!
__________________
Rick 99 EC 200 06 RM 250 AMA D36 375X OTHG 375S ***Thanks for the support : Twin Air /O'Neil Racing / Race 100% / Matrix Concepts / ODI / Mika Metals |
#4
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The flapper is different from mine 2011. Your is "hollow" mine is solid.
(Just for future record)
__________________
www.endurohp.eng.br Sherco ST300 2015 (Trials) https://www.instagram.com/leocm74/ Brasil! |
#5
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Knock off the carbon and get her back in the dirt ASAP!
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#6
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Quote:
When I took the power valve actuator cover off, I thought the actuator was on backwards. The bell crank was facing to the front. Instead of the actuator rod moving up (pre '15) to open the flapper, the rod pulls down on the '15. |
#7
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#8
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Verr nice!
Also, just curious. Are you still using your original 38mm billet? and have you had any revisions or updates made to the metering rod/check valves/float assembly? |
#9
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Looks like disassembly scuff and that's it, another 50 hrs at least on that piston.
__________________
Oz Current. 2015 ec300r estart, 98 RM 125 2013 Ec300r 2011 Ec300e 2009 Husky TE310 1982 XR500 Honda 1981 KE100 Kawasaki 1978 GT80 Yamaha |
#10
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Did you put the Smart Carb on when the bike was new?
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