My Dragonfly has a Westach carb temp guage installed. The installation
directions say to drill and tap a 1/4 x 28 hole.after the venturi and main
jet but before the throttle valve. I'm using a Ellison throttle body
injector instead, and my probe is installed in the intake manifold just past
the TBI, so it's just a hole in a pipe.

Eric

"fly_the_skies" wrote in message
. ..
Recently while poking around Westach's website (www.westach.com) I noticed
they sell a carburetor temperature gauge (2C3-1) to monitor whether your
carb air is in the range to cause carb icing. The gauge requires a sender
unit (399W) for the carburetor. I sent an e-mail to Westach asking if the
sender mounted in an existing hole in the Bing 54 carburetor or did one
have
to be drilled. Also asked on a dual carb installation whether the forward
or rear carb was monitored. This is the response I received:

"Yes if your carb does not have a hole then one needs to be drilled.
Just where exactly? I do not know. Also on the front or rear carb I have
never been asked that before and don't have the slightest idea. Sorry"

Has anyone ever purchased and installed this gauge and sending unit for a
Bing 54 carb?