ezdemon72

Where is the best place to put egt probe for gauge? I.E near a certain cylinder? Also the instructions say to start the engine for a few second to get rid of any metal chips that might have fallen in the exhaust manifold. Won't these hurt the turbo if you don't get them out? Thanks in advance.

John Rodriguez

drill and tap it with the vehicle running.

HighTen

Personally, I think the best place is in the vertical section of the exhaust manifold, somewhere above the turbo. Also, I think it is best to put the probe in the hotter half (closer to the cab). That's where I'll be putting mine. I have also seen a picture of the location I'm describing in someone's picture gallery.

Barry Smith

What ever you do don't put it dead center of the pipe my dads truck has a nice pipe plug beside his egt probe Who would of thought of them running a solid piece own the middle?

OOPS

You mean something like this!!!!

Cummins600

I drilled/tapped and then used a mag. to pull out all the shavings.

See photos here (w/comments):
http://mnelson.smugmug.com/gallery/225923

Also note the tools used here are for sale in "My Classified Ads!" area.

J BODY

The two I've seen on the CR engines have been just to the right of your missed shot OOPS. I know on the old school 24 like mine most prefered it toward the rear three cylinders as it seems #6 is the cylinder most like to keep an eye on. Prob with that on the new ones is that only two cylinders feed that rear runner.

Agades

I am currently running two probes
one in the rear half of the outlet (to turbo) and one at the 3rd cylinder

there is a big difference
the one right at the #3 cylinder gets hotter faster for obvious reasons but I notice heat spikes that the other probe misses completely (about 250* difference)

after holding speed for a few seconds they even out (heat soak temp)
the rear half does run about 50* hotter when holding speed
but the #3 probe catches the max WOT reading for me

I think the ultimate settup would be a probe right outside #5 (thats the one people are cooking) and one right at the turbo (for heat soak temp)

Agades

#4,5, &6 feed the rear half
not just two cylinders

bhoeffner

Placed mine behind number 3.

JHardwick

why would you do that

if you drill and tap with the engine running, the turbo is turning ........... not that a couple of iron chips are gonna hurt it, but

if you drill and tap with the engine off, any iron chips that fall into the exhaust should be blown out before the turbo starts to turn on fire up

beyond that, a couple of small shavings aren't going to hurt a turbo anyway .......... now if you break the end of a drill bit off in there, thats a whole different ball game in a different stadium!!

bhoeffner

The idea is that you would build pressure in the manifold, when doing this you should tape over the talepipe to allow pressure to build, thus when you break through the manifold all the chips are blown out and do not fall into the turbo. Be sure to wear safety-goggles those things realy fly.

JHardwick

ahhhh, you guys worry too much!

you should talk to some diesel mechanics, those little shavings won't hurt a durn thang!

bhoeffner

I agree.
When I did mine I just drilled and tapped it, and used a magnet to remove the big chunks then started her up! The turbo is not spinning at that time anyway it should just blow the shavings down the tail pipe.

Nascarcamper

I WOULD SAY SO... lets see 4" tailpipe reduced to 7/16"