> "With the crankshaft at TDC, set valve clearances for the #11
> and #12 valves to
> .120", oscillate the cam a few degrees so that valves eleven
> and twelve are on
> the 'rock,' whilst checking both valve clearances with two
> feeler gauges of the
> same value. When clearances are the same, the camshaft and
> crankshaft are in
> their correct relationship."
There is a 180 degree cam rotation missing somewhere in there. For the
initial clearance setting, both lobes must be on the base circle (eg #6 at
TDC on compression). Then for checking the cam position, both lobes must be
on overlap (ie #6 at TDC on exhaust).
The method also depends on the camshaft having symmetric overlap. The
factory cam does; but some aftermarket cams do not and must be timed by the
more tedious methods.
-- Randall
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