Egt reading at downpipe. ? degree lower then manifold

[BryanH]

I had to install my egt probe in my 4" down pipe today and it will need to stay there for a week. My question is, How much lower will my reading be versus having it in my manifold?
On my 6.0L I have it in the drivers manifold and get a good reading.
I think it will be 400 degrees lower but would like y'all opinion

[BryanH]

2002 7.3L................................

[BryanH]

Come on y'all. Give me some input. I got 18k going 240 miles in the morning.

[Austinj427]

From what I have heard, you shouldn't exceed 900 post turbo.

[nine54]

I can tell you that from the temps i have seen listed on here mine seem pretty close. My probe is installed in my 4" downpipe also (bought it that way) at about 60mph i sit around 550 at 75mph about 650ish. Thats just the truck, no load. mods listed in my sig.

[BryanH]

Originally Posted by Austinj427

From what I have heard, you shouldn't exceed 900 post turbo.

That's what I needed man, Thanks I will treat 900 on my 7.3L post turbo equal to 1200 pre turbo on my 6.0L. Does that sound pretty close?

[chrispaine]

Mine came installed in my truck also, I never looked to see where he put it.. where exactly should it be again?

[PolarBear]

It should be in the exhaust manifold, before the turbo is the main thing though. At least to accurately monitor any potential high EGTs that could cause damage.

[layson]

Until you actually move it to the manifold, it is just going to be a guess. It only takes a few minutes to drill and tap it...

[Strokeorcroak]

I just switched mine over and its a whole different ball game.

The post turbo side changes temperatures very slow so its not a very good reading, now that i switched to the manifold the gauge moves much much faster under heavy acceleration. BUT since you have no choice stay at or below 900 for extended periods, above that for very short times!

Like steven says it doesnt take long to switch if you know what your doing, good thing i've got great buddies to help me out haha