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September 29th, 2008

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Q & A: Valve Clearances

Wednesday March 27th, 2002
Q & A, MGA, MGB, MGC, MG T-Type, Midget
I didn't invent this one, so please don't give me any credit.

It involves a method to check clearances on MG valves using "The Rule of
Nine." When a particular valve is fully open, then the corresponding
number
valve is fully closed and the two numbers (of the two valves) add up to
nine.

e.g. when valve number 8 is fully open, then valve number one should be
fully closed and tappet clearances may be checked and adjusted on number
one. 8 + 1 = 9

Craig! Thanks so much for thinking of me on this one. It's much more
printable than the last one I got which was entitled "nipples up." I
believe I probably have included this in the tune-up section of my
te... read more