This is what it looks like after
removing material from the inside of the timing cover. I used my Dremel
to make these pockets which are about 1/16" deep. I first started
with a round spherical burr and finished with a tapered stone to smooth
things out a little. Who says you can't do mill work in your garage
without a milling machine!!
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Now that we have enough clearance for
the gear drive, it was time to fit the cam button. The cam button is
used to keep the cam from walking (moving in the block). Roller cams
seem to walk towards the front of an engine so this is why I bought a
thick cover and not a thin steel stamped type (like a stock one is). I
needed .005" and .010" clearance between the cover and cam button. To archive
this distance, the use of a spacer behind the button was necessary. The
spacer I used was a .074" thick 5/16" washer. This
was just the right size and didn't even need any modifying. If you
notice, you can see the button has more than one piece to it. There is a
bearing between the two pieces held in with a snap-ring. This way it
doesn't rub a hole through the timing cover. This goes in the end of the
cam gear if you noticed on the last page.
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