The valve spacing on the 5 port Pierce head is NOT the same as a
conventional iron head which explains the issues you head.
Irrespective of the size of the spark plug the thing that matters most is
to use one with an appropriate heat range for the spec (cam) of the engine
and the type of use it's going to be put too (road or race).
Regards
Weslake-Monza 1330
In a message dated 23/02/2012 02:43:33 GMT Standard Time,
lbc@littlebitcountry.com writes:
If you get one, you might want to take it to a machine shop that can
make it work.
Someone brought one into our shop to "FIX" and it took some time to
get the pushrod holes lined up with the rockers. The pushrods rubbed
the sides of the head and then trying to shim the rockers so they
would actually hit the tops of the valves, had to shave the sides of
two pedestals so the rockers were close enough to the center of the valves.
When we first put it together 4 of the rockers all but missed the
valves. This was a $1300 bare head, it did have the seats and guides
installed.
This one took some skinny ass spark plug, not sure what they were anymore.
Good Luck
Dave
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