Team.
At the risk of stating the obvious, it is possible to adjust every valve
with just two full rotations of the crankshaft.
I use the 'mirror' approach to adjusting valves to minimise the number of
turns needed. Consider that there is an imaginary mirror stood vertically
between valves 6 and 7 such that valve 12 is the mirror image of valve 1.
Likewise valve 7 is the mirror of 6. In that way whichever valve is fully
compressed (open) the mirror image valve is ready for adjustment. That
relationship is also expressed as the '13' rule.
When the rocker cover is removed one of the valves will already be fully
open. Others will also be partially open or closing. Make a note somewhere
of the valve that is fully open. When you get back to that valve being fully
open again you are done.
Adjust the mirror image valve of the one that is fully open then rotate the
engine slowly in the normal direction, watching all the valves until another
one is fully open. If the first valve open is an Exhaust then the next to be
fully open will be an Inlet (and vice versa). You may also notice that it
is less rotation to reach an exhaust valve (50 degs after an inlet) than it
is to reach an inlet valve (70degs after exhaust). Anywhere around one flat
on the front nut is close enough though. With another valve fully open you
can then adjust its 'mirror' mate in the same way.
I hope this helps.
Enjoy.
_____________________________________________
(______________ Alan Bromfield _______________)
(______ \____1957-BN4____/ _______)
(_________________________)
http://tinyurl.com/healeyforum
-----Original Message-----
From: Tim Ward <timwarduk at aol.com>
To: healeyguy <healeyguy at aol.com>; healeys <healeys at autox.team.net>
Cc: glemon <glemon at neb.rr.com>; bighealey <bighealey at charter.net>
Sent: Sun, Mar 4, 2012 6:17 am
Subject: RE: [Healeys] Adjusting Valve Rocker Clearance
Hi Perry
Thanks for that very informative response.
So if I understand you right, given the way the Cam is constructed, it is
not necessary to be totally precise in where the cam is in its rotation so
long as the Spring is fully compressed, it is then OK to set the gap on the
opposing rocker, e.g. 12 to 1 as in your example?
Thanks
Tim
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