EGT Probe location on the Manifold?

[mconstable]

I know it's been covered, but it's late, and I might be getting my gauges done tomorrow, so don't have the energy to search...

I'm going pre-turbo, just looking for exact location suggestions... thanks everyone...

Michael

 

[LightmanE300]

most prefer on the flange just above the turbo, slightly left or right of center - there is a divider in the center you don't want to drill into. If you do it this way though, you will have to remove the turbo to catch shavings. If you drill on the top of the manifold on a horizontal surface, you can get a magnet down in there and sweep up the shavings saving quite a bit of time but a slightly less desireable location IMO. I did it between cylinders 3 and 4. Some say the back cylinders burn hotter, so that might have been slightly more ideal , however my location was easier to reach and drill, and my temps are consistent with others posts on this board. Hope this helps.

 

[XJSuperman]

I did mine on top of the manifold between cyls 3 & 4 just as LightmanE300 did.

I think the ATS manifold (aftermarket) has a bung welded in it in this position for you to tap for the probe... so we can't be too wrong

 

[RankRam]

Mine has worked very well in this locale.



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[JVolpe]

Mine also top of manifold between 3 & 4.

 

[CoastyAV8R]

I know the accepted practice is to install the EGT probe in the manifold between the turbo and manifold, heck, even I did it that way on all 3 of my trucks. However after reading more and talking to the Cummins people, if I could do it again, I would put it post turbo for a couple of reasons: First the install is easier as you don't have to worry about FOD'ing out the turbo with metal shavings. Second is in the event your EGT probe were to ever fail, which isn't very likely but still a possibility exists, it wouldn't go through your turbo and FOD out your engine. Finally, there are a set of parameters of EGT temps to avoid for a post turbo install just like there is for a pre turbo installation. Temps that Cummins quotes are usually referenced to post turbo temps. It's just some food for thought...

 

[Joseph Donnelly]

I put it about where JVolpe did but on the side, where the chips will fall away onto a terry cloth towel I put under the manifold to collect them. Only a couple chips get inside and are easy to remove with a magnet. Cummins usually talks pre-turbo temps, like the old standard of 1300 deg. max. Probe failures are very rare. I did have a high dollar Autometer comp probe fail once. It was post turbo and the exhaust wheel took it out on its way down the pipe. So, turbo failure can kill the probe if it is post turbo

 

[mconstable]

Thanks for all the help guys!!

my Fuel-Pressure Isolator got left out of my box, so I'm gonna wait 'till it gets here to do them...

Might tackle the exhaust tonight, got the AFE in, it's quieter than the ScottyIII, got the Timbrens on last night...

Getting there little by little...

Michael