I am gettin some guages along with my new hx35/40 hybrid, thank you Brice @ BBD performance , and wanted to know what is all the nessicary equipment to install guages. Im gettin just a boost and pyro, for the pyro dont i just need a thermocouple and lead wires? and for the boost i just need the tubing and fittings? And of course wire to light them up, but please correct if im missing something here. thanks guys

 

Make sure to run a little heavier gauge wire. Same colors to (helps with identifying easier). Cut the wiring a little longer than you think you need, and tape them together (boost wires separate from the pyro). Makes a neat and tidy harness that way.

 

The best way to put the thermocouple into the exhaust manifold is to use a stainless steel fitting with a compression fitting on one end and a male pipe thread on the other. Either bore it out or buy one pre-bored so that you can slide the thermocouple straight through it; slide it to the right depth, and then swage on the ferrules.

Boost sensing lines are best installed using the same fittings, only without the need for them to be bored through.

What manufacturer of gauges are you getting?

 

either auto meter or isspro, i think isspro because i like the looks better. Could you explain the process a little more in depth? i ve never heard of this done this on boost and pyro

 

If you drill out the fitting, then the pipe (or thermocouple) can slide all the way through.

If done correctly, they're clean, reusable, last forever and are good for 2000+ PSI no problem.


Swagelok is the best, biggest, original company that makes good compression fittings, but there's a ton of other "x-lok" companies that make imitation fittings that are almost as good (and usually interchangeable); Hylok, Truelok, Tylok, Alok, DKlok, Letlok, Sherlok, Bilok, pretty much anything you can imagine ending in "lok" is a trademark in the fittings industry.

If you drill out one of these T fittings (attached), you can put the thermocouple into the manifold through the top and run a line out the side to detect drive pressure; one fitting lets you measure pressure and temperature through the same hole. The same can be done for fuel temp and pressure, boost temp and pressure, transmission fluid temp and pressure, et cetera... You can even use one of these fittings to install a pyro probe on a 6.7 this way without drilling an extra hole.

When it comes to thermocouples, the length of the thermocouple wire doesn't matter more than a few degrees over scores of feet if it's an externally powered gauge, the wire isn't picking up electrical interference and you only use the right thermocouple wire. You can buy just thermocouple wire by the foot for cheap and strip and twist the ends together for a perfectly accurate DIY thermocouple; then you can solder the twisted together wire into the bottom of a "thermowell" or stainless tube with a cap welded on the end and have your own thermocouple probe for half what the gauge manufacturers want.

http://www.mcmaster.com/#type-k-ther...e-wire/=8a3lk2
http://www.mcmaster.com/#thermowells/=8a3lgb
http://www.mcmaster.com/#thermowells/=8a3ksb