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Drill and Tap size are
the same as for the
thermocouple, 1/8"NPT.
Start with a small pilot
hole and work your way
up to a size "R" drill
bit (0.339") increasing
1 drill bit size at a
time. This will cause
all shavings to be small
and dust-like. There is
no need to coat your
drill bits with grease
or lube. Once you
are done drilling tap
the hole with a 1/8"NPT
pipe tap.
Periodically test fit
your fitting to make
sure that you are not
tapping it too deep.
On this 2006 LBZ you can
see the boost gauge
tubing is routed to a
90° Compression tube
fitting. (included with
our ISSPRO gauge kit).
This is not required but
does make routing the
tubing look cleaner. |
