Ok guys, I'm a little concerned. Keep in mind my truck is completely stock. So with my new pyro (probe installed pre-turbo), I'm able to see what temps. I'm pushing... Basically, I was running about 750-800 degrees stable on flat ground going almost 70 mph empty (8 psi boost). Going up a 6-7% grade at 60 mph, I was stable at 1000-1050 degrees (again empty). Couple things I don't get. First, why didn't these trucks come with an EGT gauge? If I was pushing 1000 degrees going up a hill empty, then if I were towing something, wouldn't the temps. easily climb over 1200 degrees? Second, with a fuel plate and other mods, you must reach peak EGT pretty fast... Maybe there's something wrong with my readings?

As far as the probe, this is how I have it mounted in my exhaust manifold. About 2" from the turbo gasket, a little closer to piston #1. It's screwed in there pretty tight, but should it go in more??

 

No one...?

 

Doesen't sound that bad to me. Keep in mind too the more boost the cooler it will run.

 

Pyro is in a good spot.. Pre turbo is the only way to go and keeping the tip of the pyro probe in the middle of the exhaust stream is best. You don't want it touching the manifold on the other side.

Temps seem normal for a stock engine. Yes EGT's will rise with load but are kept in control (with the stock fueling) with boost air. When you add fuel, you add heat, that is a fact. But with upgrades to the air and exhaust systems and changes in timing or turbo chargers you can keep them in some sort of control.

 

your pyro looks good and your ## sound normal. dont worry about it unless you get over 1350 degrees. and you can even peg your pyro for a few seconds. ( i wouldnt recommend it, but i have done it before)

 

Thanks for all your input!

 

I thought pyro was supposed to be a tad closer to the firewall and tad closer to the turbo? This is supposively done to read the higher temps of the #6 cylinder?

Its certainly better then being post turbo though, and temps seem normal to me.

 

Piston #1 runs hotter in the 12 valves. Piston #6 runs hotter in the 24 valves. As far as placing the probe closer to the turbo, I don't know. I just followed the directions on dodgeram.org.

 

Your boost and pyro numbers are good... As a matter of fact you match me... Remeber pyro temps basically show drag. More drag you have on the truck (for example: up hill grade, cargo, etc.) will create high EGT temps. Less drag will reduce these numbers.

Boost pressure is right on for the speed.

Yes there will be time when you'll be driving by pyro and not your speedometer! been there and done that...

Placement...

 

Numbers sound right!

Try going up your 6-7% grade at 70 or 80...or even WOT. Bet the added boost holds your egt's right at same level?

As Lil Dog & Moparman said.... when heavy or towing, we all drive by the EGT gauge sometimes. But on stock trucks, EGT's are seldom a problem!

RJ

 

Exception to the rule...

• Driving in too high of gear for load or grade.
• Loaded too heavy and/or bucking high winds.
• Turbo problem / low boost pressures / blown boot / blown intercooler.

These listed above will cause highier than normal EGT temps... I've seen as high as 1,300*F at sppeds as low as 30 MPH... I did this with a empty truck heading up a forestry road running 4th gear... It extremely easy to push the EGT if you understand what causes it... Once again it... EGT shows when your out of your power band and lugging the engine or got excessive drag.

 

I once had 900° at idle!

I was idling in 3rd gear through 2 feet of snow at an elevation of about 8500 feet.

Pyros are good only when used!