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blueboy5000 · 08-19-2013, 09:07 AM

set the top valve (intake) to EXACTLY .004" and the bottom to .005" inches. "wiggle test" is completely inaccurate, and should not be used to denote proper valve rocker lash.

In the case of the "dropped seat", replace the entire head with an assembled new head and new head gasket, but be sure to clean the top of the jug with a light abrasive (cookie wheel) and check the top of jug with a machinist straight edge. Chances are, that you may have ring or other inner cylinder damages as well if you have no compression. So in reality, the safest bet is an entire new top-end. (if you are daring, now is the time for a BBK)

08-19-2013, 09:07 AM	#2
blueboy5000 Join Date: Jul 2011 Location: Connecticut Posts: 493	set the top valve (intake) to EXACTLY .004" and the bottom to .005" inches. "wiggle test" is completely inaccurate, and should not be used to denote proper valve rocker lash. In the case of the "dropped seat", replace the entire head with an assembled new head and new head gasket, but be sure to clean the top of the jug with a light abrasive (cookie wheel) and check the top of jug with a machinist straight edge. Chances are, that you may have ring or other inner cylinder damages as well if you have no compression. So in reality, the safest bet is an entire new top-end. (if you are daring, now is the time for a BBK) __________________ 2011 Roketa MC-23-150 4T 150cc 157 qmj 24mm carb w 115 main jet and paper cone air filter Manual petcock w Tygon fuel lines Scrappy Dog Scooters Retro-slash stainless straight-thru exhaust RED spring clutch Adjustable CDI (brand unknown, it's blue and red and works great!) KOSO high performance variator w 12g sliders Gates Powerlink 835-20-30 belt GPS verified 65mph on flats.
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