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September 29th, 2008
Q & A: Valve Seat Machine Dimensions
Sunday March 17th, 2002
Dear Sir,
I am in the process of rebuilding the head of my 73 MGB and in need of the valve seat machine dimensions for the intake valves. The engine # is 18V672 Z L9507 and from what I read, the intake valves are larger on that engine than the others. My "The Complete Official MGB" manual only provides the dimensions for what appears to be the smaller intake valve. I have just sent for your Tech Manual and as they say "the check is in the mail". I noted there was a section "MGB cylinder head data", perhaps that information is in the manual.
Thankyou
Sincerely
Earl A. Epps
EARL!
The head probably takes the 1 5/8" intake valve -- that is 1.625" Interestingly, this valve (minus the 5/16" stem) yields almost exactly 2.0 square inches of cross section. Note, too, that this valve is... read more
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It makes no difference how quickly your MG will accelerate if it cannot
stop! The proper functioning of your brakes must ALWAYS be at the
top of your list of priorities. You owe this degree of safety to yourself,
your passenger, and all others on the road.
John H. Twist (Fall, 1980)