Factory pre-drilled EGT holes????

[mfurrh55]

Just looked at my 2018 and there is already a pre turbo EGT probe about 3-4 area. Not as optimum as in the Y but sure would save a lot of effort to just read it OBD.

When i did mine, i removed turbo and then stuffed a greased rag up in manifold, drilled and pulled rag out with all the shavings, been 12 yrs. no problems

 

[JR]

My Scan Gauge II earlier today during a regen. EG3 is the DPF outlet. This at a stop sign where I had coasted to a stop from 55mph with minimal braking.

 

[RVTRKN]

Unless the newer models, 15 and up installed pre turbo, they don’t have factory pre turbo which is very important. I was hesitant as well, but the install went without any problems, and seeing temps go over 700 degrees under idle (regen) I wonder if I did any damage to my turbo shutting down early. After 35K with the EGT probe, I figure at around 25% shut downs was over 500*. If cracks are a worry (mine never has) then purchase an exhaust manifold with the probe location at the “Y”. If I could afford it, I’d have a sensor at every exhaust outlet, that would definitely make trouble shooting easy.

 

[WalterJ]

People have been drilling for a pyro for years and I've never heard of anyone having a cracking problem. The pyro on my 06 was put on in 2010 and has not issues.

The safest way to drill is to remove the turbo and manifold but a lot of people do it without removing. There are a couple methods to do it, but the one I prefer is to do it with the engine running as the exhaust pressure will push the chips back out of the hole as the bit starts breaking through. Once the hole is drilled let things cool and use grease on the tap to catch the cuttings. Just go slow with the drilling and tapping so stuff isn't flung off.

I did this on my 2004 to rethread my manifold...a slight shop vac nozzle mod...no doubt work for initial drilling too?

 

[WalterJ]

Just looked at my 2018 and there is already a pre turbo EGT probe about 3-4 area. Not as optimum as in the Y but sure would save a lot of effort to just read it OBD.

Awsome news, thanks. So I assume the OEM EGT Probe data is available, somewhere, to inform/guide when a shutdown is appropriate?

 

[AH64ID]

There isn’t a probe pre-turbo on a ‘18, that’s a pressure sensor.

Pre-turbo EGT’s aren’t needed unless you’re modified. The stock EGT1 is plenty.

 

[jhenderson]

Just in case someone is drilling a manifold you can also simply start the truck. When you break through the manifold the exhaust pressure helps blow the drill and tap chips out. I did this in conjunction with a shop vac on my 04.

 

[AH64ID]

I've never been a fan of the truck running when drilling the manifold, in the rare event the drill bit breaks while drilling your turbine is going to need replacement. I know it's a common practice, just not for me.

I've always preferred drilling slowly, without grease, and with a shop vac an the engine off/cold. Once you're done drilling and tapping you can use a little pressurized air to blow any shavings towards the turbo. Then start the truck. By the time the turbine wheel is up to enough speed where damage could occur from FOD the FOD will have been blown well past the turbine wheel.

 

[Wiredawg]

Friends,

Just thought I would share I broke the tap off in my 2009 Ram 4500. I was leaning over the engine and slipped while tapping, breaking it off clean with the manifold. Two small screw drivers didn't work turning it out. So, I mentioned it to my BIL, who just happened to have a specialty tool specifically made to remove broken taps. It has 4 prongs that fit into the grooves and can unscrew it effortlessly.

Anyhoo, I wasn't going to install an EGT probe in the 5500, but I got an email from Edge promoting free accessories when you purchase Edge Insight. I had purchased my CST2 the first day of the promotion on Amazon, Edge confirmed my eligibility, so I picked the EGT probe as my freebie. Decision resolved.

Now, I just have to heal from my ankle fusion surgery. 20 weeks into recovery, Dr just rescinded allowing me to put more than 25lbs weight on it. Woe is me.

So my project list has grown: complete Lil Red Express Truck electrical restoration, install full duty cycle compressor on the 5500, complete bbq/party trailer project. And loads of honey doos.

Cheers, Ron

 

[R.Taylor]

Some TDR members did this as well, but the arguement against it was if a shaving managed to blow into the turbo you could cause damage, due to close tolerance they run at. Grease on the bit is also a popular method but could cause the shavings that remained to stick to the vanes, and when started could cause damage.

Removing is the best method, but it's labor intensive and you lose the factory seal.

I loosened up the turbo just enough to make a 1/4" gap between the manifold and the turbo then I cut a piece of sheetmetal that was just wide enough to fit edge to edge on the studs... Slid it in and drilled away. Afterwards I just gave a little blast of air between the sheet metal and manifold and took a look with the mirror... No shaving, no hassle. Torque the turbo back down to the manifold to spec.... Shouldn't have any leaks.

 

[RVTRKN]

Thats a great idea, I don't think I'll be adding a EGT probe on my 2019, but if I do I'll try your method.

Since no one has mentioned the dead pedal problem I.E. torque management with the Aison, I must chime in with comments to the original person asking if their are any misgivings. In short, SOME Aisin equipped trucks have severe torque management built in and it's a PIA to drive these. Before you lay your money down, drive the truck you are going to buy and make sure you don't have a deadly lag in acceleration. Mine is 3-5 seconds depending on the gear and speed. RAM will not correct this problem and it does not occur on all trucks. Seems the 68RFE is not as affected. I just returned from a camping trip over the weekend where I had my camper on and towed a heavy trailer on curvy mountain roads. The lag was even more pronounced and as you wait 5 seconds to get power to move up the hill, it engages with a great amount of torque which then causes you to let off the pedal and go thru it all over again. There are those on this forum that say it does not exist but many others than myself have the issue. Other than that Mrs. Lincoln it's a wonderful truck. Wish I could sell it without taking a huge loss.

 

[WalterJ]

There isn’t a probe pre-turbo on a ‘18, that’s a pressure sensor.

Pre-turbo EGT’s aren’t needed unless you’re modified. The stock EGT1 is plenty.

Woah, there's info/datas from this "EGT1" thingy somehow in my 2018? How pray tell do I display it?

 

[AH64ID]

Woah, there's info/datas from this "EGT1" thingy somehow in my 2018? How pray tell do I display it?

I use a Edge CTS2 Insight monitor to watch EGT1, and other OBDII parameters.

 

[p-Bar]

Start the truck plug the exhaust and start drilling . It will blow the chips back at ya. Thousands of trucks with drilled manifolds. You want to put the sensor between #5 and #6