Adding EGT to factory manifold

[Randomrunner12]

Any tips or tricks to add and egt port to a stock factory manifold without pulling turbo or manifold out?

 

[AEdelheit]

Ive done it a few times, Ill use a vacuum to collect chips then put grease on the drill bit when you get close to punching though, then grease on the tap to collect the shavings. I Never had in issue doing it this way.

 

[Topzide]

Maybe this will help with the location, if you haven't already seen it.

 

[Randomrunner12]

AEdelheit and Topzide. This helps a lot and thank you!!!!!

 

[bcbender]

Common rail manifold is a little different as the turbo is farther back than that diagram, I did the same with a vacuum and grease method, put the probe on the top side of the manifold right after # 3 dumps in, then you get temps from all 3, as it is a little weird how 3 and 4 dump into the turbo with the turbo mounted directly under #4 rather than in the center like the gen 2 trucks... JM2C.

 

[AEdelheit]

Common rail manifold is a little different as the turbo is farther back than that diagram, I did the same with a vacuum and grease method, put the probe on the top side of the manifold right after # 3 dumps in, then you get temps from all 3, as it is a little weird how 3 and 4 dump into the turbo with the turbo mounted directly under #4 rather than in the center like the gen 2 trucks... JM2C.

I went in where 5&6 meet 4 as they run hotter then the front 3 , dont know how much it really matters overall.

 

[Randomrunner12]

Truck is an 04.5. Does that make a difference. I’ve seen some photos on people putting the probe in the elbow that comes off the turbine housing. Bad spot?

 

[petersonj]

I’ve seen some photos on people putting the probe in the elbow that comes off the turbine housing. Bad spot?

Because of the pressure drop across the turbine drive wheel, you will see about 100°F to 400°F temperature drop (depending on engine load) from the temperature in the exhaust manifold before the drive wheel. That's why most people place the temperature probe in the exhaust manifold.

- John

 

[AH64ID]

Because of the pressure drop across the turbine drive wheel, you will see about 100°F to 400°F temperature drop (depending on engine load) from the temperature in the exhaust manifold before the drive wheel. That's why most people place the temperature probe in the exhaust manifold.

- John

Nothing wrong with post turbo, but it’s a different range of safe numbers. I ran both on my 05. 10° per psi of boost was generally the temp drop across the turbine.

I liked pre-turbo for working the motor hard and post-turbo for cooldown purposes.

 

[User113]

I liked pre-turbo for working the motor hard and post-turbo for cooldown purposes.

That makes perfect sense and sounds like a great idea. Did you put in two separate gauges, or did you just multiplex the two sensors to a single gauge?

 

[NIsaacs]

Truck is an 04.5. Does that make a difference. I’ve seen some photos on people putting the probe in the elbow that comes off the turbine housing. Bad spot?

Back in the day, this question would ignite a fire storm

https://www.turbodieselregister.com/posts/1412997/

https://www.turbodieselregister.com/posts/1885410/

If you don't feel comfortable with drilling the manifold, there is nothing wrong with installing it in the elbow. As long as you are aware of the difference and drive accordingly it's all good. Anything is better than nothing. Most exhaust brakes have two threaded ports. One pre butterfly for back pressure and one post, for EGT.

All my older trucks have post turbo locations. I did upgrade to both in '15 on the '01 when I added the Edge Juice, they are noted to run hot.

 

[AH64ID]

That makes perfect sense and sounds like a great idea. Did you put in two separate gauges, or did you just multiplex the two sensors to a single gauge?

Two gauges. Pre was an ISSPRO, pos was on my MM3.