I have ordered gauges for my truck and have been reading about the EGT install. I see that some install the fitting on top of the manifold and some at the outlet of the rear exhaust just above the turbo. What is the difference with these two locations or does it make any difference. Would like to put it in the correct location and get the correct readings.
The pictures you guys show of your gauge installs are great. I will try and post pics of my install when done.

Thanks
John

 

The rear 3 cylinders have been known to run a little hotter. It is a little more awkward to mount near the turbo, but worth it in my opinion.

 

What cquestad said, unless you are like me and install 2 pyro's. On e pre and One pst Turbo.
\The only way to get better than that is to install one for each cylinder

 

Like this!

 

I installed mine on top of the manifold because my drill and bit would not fit in the engine bay sideways.

 

I think the temperature could be slightly more accurate just above the turbo, however I'm also about to install a thermocouple for an EGT gauge, and I plan on doing it from the top down. The reason is that I don't want to remove my turbo to catch the shavings, and if you do it from the top down, the shavings will fall down into the manifold where they can be reached with a magnet tool, unlike above the turbo on the vertical surface, where they will fall directly down into the turbo. Yes grease the bit etc etc however some still gets through. I prefer to minimize it so I'm going up top. I've talked to folks on this forum that have done it from the top (no dirty jokes! ) and their readings are consistent with those who have mounted above the turbo.

 

I agree, the top of the exhaust manifold is the easiest. The suggestion about plugging the exhaust pipe and drilling with the engine running is a bad idea!

 

98720 thanks for the pic. Thats the exact location I was picturing. Were you able to fish any shavings out with the magnet on the inside of the manifold?

 

Yes, just pickup one of the small pocket telescopic magnetic retrieval tools from a good hardware store. Send it down in the hole after each step to retrieve the shavings. You will be surprised how much the magnet picks up, in both large and small shavings.

 

Ok cool I have one of those exact magnet tools. Thanks 98720. I was thinking there was maybe an even smaller slinkier type I needed.

 

I just thought I would present another option for drilling. You can loosen the bolts holding the turbo (4 bolts) to the flange and place a piece of cardboard blocking the route to the turbo. Blow out all shavings and reattach. You can grease the cardboard if you want. This works best if drilling just above the turbo.

 

We have been drilling them in from the top so it reads the back cylinders. Seems to work just fine.

 

Duct tape on the cardboard sticky side up might also work well for the turbo droppers. I've decided to do mine from the top. Good luck JK1364!

 

Quote:

The suggestion about plugging the exhaust pipe and drilling with the engine running is a bad idea!

why do you say that?

i did that with mine and i haven't had any problems with it. it worked very well actually... the drill curls came right out, and the tapping filings came out or stuck to my greased tap...

 

It would seem a little tricky to drill and tap with all that vibration present is my guess..