EGT

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Has anyone drilled and tapped a hole in the exhaust elbow for their EGT probe with the elbow still on the engine? I was thinking the chips can't fall anywhere but down the exhaust pipe.
Any thoughts... good or bad idea? Thanks!

 

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Could be done, but why chance it? You can have that elbow off in 5 minutes. Use some "anti sieze" on the bolts when you put it all back togather. I put my thermocouple in the elbow, but I removed the elbow to do it.

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Always ready to help!
2000 2500 Red Sport quad cab, 4x4, K&N, DDI's, straight piped, boost, pyro and fuel pressure gages, Hot Power Edge, mean looking set of 33. 5" tires, Snap On diamond tool box, Marine Corps window sticker, Semper Fi!

1972 340 Cuda'. Original tripple Black, 340 car w/air. Good clean car, super stock springs, Weld Prostars, shaker hood, strong 340 with a 727/4000 stahl, 4. 56... . Bombs away!
NRA Life Member. http://www.geocities.com/chadsheets

 

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Thanks Chad! There is always a "right way" to do things, just trying to keep the fittings factory tight.
Dave

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Dave,you are right,many people drill and tap their post turbo gauge hole while still installed,the only place the cuttings can go is out the exhaust. Might be a little more room to work if you take it out,but I'm a preturbo person, I never tried and wouldn't know.

 

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Better yet, install am exhaust brake. The BD is all set up for pyro and brake pressure guages.

 

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I took mine off, and traded it for one that was drilled and tapped. Not terribly difficult, but awkward at times getting to the nuts. Patience paid off and it went in fine.

I also concurr that to drill it while assembled won't hurt, BUT can you get a drill in there at the correct angle???? AND remember to drill off center - Don't drill at 12 o clock on the casting seam (or so I've been told).

I bought my stuff from Scheid Diesel in Illinois and they threw in the drilled and tapped elbow at no charge, just exchange. #ad


I'd love to have the exhaust brake, but soooo many other gooodies on the menu first!

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2001. 5 2500 SLT+, QC/LB 4x4, ETH, 6spd, 3:54 LSD, camper/tow equip. , NV241HD, Bright Silver, Snug Top, Ispro w/3 pod pillar w/tweeter, Pyro, Boost & Mag Hytec cover w/temp guage

 

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Thanks a bunch guys! You have me wondering whether pre or post turbo location for the probe is best now. I can see the advantages to pre, but don't want to buy a turbo if the probe end decides to let go into the blades.
Anybody had trouble with a pre-turbo installation problem?
Daver

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Dave,I think if you did a poll you'd find that most folks go preturbo. The main problem I've heard of is having the manifold crack due to overtighting the probe fitting,something that is easy to avoid.

 

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I went post because the thermocouple I had was too long to fit in the manifold. If I had my choice I would put one in each exhaust chamber. If you go post, just add a couple hundred degrees to the temp you get. That will give you a round-a-bout figure to go with. If you just have to know exactly, then jerk that turbo off and get the drill out.



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Always ready to help!
2000 2500 Red Sport quad cab, 4x4, K&N, DDI's, straight piped, boost, pyro and fuel pressure gages, Hot Power Edge, mean looking set of 33. 5" tires, Snap On diamond tool box, Marine Corps window sticker, Semper Fi!

1972 340 Cuda'. Original tripple Black, 340 car w/air. Good clean car, super stock springs, Weld Prostars, shaker hood, strong 340 with a 727/4000 stahl, 4. 56... . Bombs away!
NRA Life Member. http://www.geocities.com/chadsheets

 

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If you get the ISSPRO pyro, it's marked green/yellow/red (and numbered). the colors correspond to post-turbo temps..... they may have another model that's got the colors/numbers correct for Pre-turbo use, but, I don't know... . rm

 

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I like the idea of pre for a true reading at all times. #ad
Now, can I ask just where the proper location should be? Thanks a lot to each of you for your comments. :rolleyes
Dave

 

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BigD,try this link

 

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IllFlem: Hey guy, that link from Diesel Injection Service is a real help. I appreciate your efforts greatly. I'll do a little studying and see what I need for new gaskets before I get the wrenches out.
Dave

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Big D,
Make sure you are using the 1/4 NPT Thermocouple if you drill the 7/16" hole. The 1/8" NPT requires a much smaller bit; I think it is a 23/64. I like the smaller hole personally.

 

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BertM,

Roger on the small hole. My preference as well for I have the proper size bit. #ad

Dave

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Rich M ; How can the ISSPRO Pyrometer be calibrated for Post turbo temperatures? The readings come from the probe and reflect the temperatures from whatever area it serves, whether pre or post turbo. Please explain!

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2000 Qc LWB 6Sp 3:54 LSD, + all the options except leather, BD Stage ll Injectors, Boost Module, Boost Elbow, K&N,
BD E-Brake with Shifter Control, ISSPRO EGT and Boost Gauges, Transfer Flow 50 Gal. Alum. Fuel Tank, Line X
16K Hijacker Double Rocker, Pulling a 35Ft. triple slide Spinnaker 5vr.
with every option available.

 

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Tom,what rich was saying is that the color codeing on the gauge is different for a pre or post gauge,i. e. the red danger zone on a post turbo gauge is a lower temp than a preturbo gauge.

 

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I drilled my elbow post turbo. It was no big deal. The one thing I was surprised at was that I had been turning off my engine about 15-30 seconds too soon according to the post turbo readings on the EGT gauge. Now I make sure I idle around a parking lot for a while before parking and shutting off at 350 degrees.

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Rob in Sacramento
Y2K All Black 3500 ISB 4x4 4:10 LSD,Auto,QC,SLT Laramie, LB, Polished Stull Billet Grill & Fog inserts, Chrome Smitty Built Step Rails, Mopar Chrome-Tipped Mud Flaps, A-Pillar mounted Turbo/Pyro/Trans Temp gauges,21-20-99 & 18-24-99 Computer Re-Flash,Weatherguard 'Weekender' Ladder-rack,Rancho 9000's(the best upgrade I've done so far),Diamond Plated Tool Box, OEM U. R. Bedliner.
I plan to 'BOMB' only after my 100k mile warranty expires Fact:"The First Fords' had 'DODGE' Engines-The Last Fords' NEED THEM!"