19 November 2008
BD X-Monitor 2 #
1080500
7
BD Engine Brake Inc
A10 – 33733 King Rd, Abbotsford, BC, Canada V2S 7M9
Ship: #88 – 446 Harrison St, Sumas, WA 98295 Mail: PO Box 231, Sumas, WA 98295
Ph: 604.853.6096 Fax: 604.853.8749 Internet: www.bd-power.com
GM 2001-2006
Remove the passenger side
fender well. Once this is removed,
you will see the exhaust manifold.
Towards the rear of the manifold
there is a flange that the manifold
bolts to. Just in front of this flange
is the ideal place to drill for the
thermocouple.
Generic Installation of the Thermocouple
This section provides instructions for the generic installation of the thermocouple.
Pre-Turbo Installation
You must drill a 21/64 hole in your exhaust manifold. There are 2 ways to do this – the
best way is the way that makes you most comfortable. You can remove the manifold to
do this or you can do it on the vehicle while the engine is idling. It is also desirable to drill
a 1/8” pilot hole. Leaving the engine idling will allow any small shavings to safely exit the
exhaust. It is recommended to apply a small amount of grease to the drill bit before
drilling.
Use a 1/8-27 or 1/8NPT tap to make threads in the
hole you just drilled. You will not want to run the tap all
the way into the manifold. This is a tapered tap so the
threads at the top are larger than the ones on the
bottom. You need to tape it far enough to screw the
thermocouple bushing into the manifold.
Screw the thermocouple bushing into the manifold. Be
careful not to over tighten it.
Insert the supplied thermocouple into the bushing and
tighten the locking nut.
