The replacement ATS exhaust manifolds are pre drilled pre turbo.

 

I would consider a post-turbo pyro... but only IN ADDITION to my pre-turbo pyro! Perhaps that's why BD pre-taps the E-brake? Either techy people who add ebrakes want an additional pyro reading, or people who don't want to drill ANYTHING will at least install a pyro... post-turbo is definitely better than NO pyro!

 

QUOTE "I never have had a temp gauge for auto but ...."

How can someone criticize others when they have never even done the deed??? I always love to hear the words and criticismz from those that have no idea, no experience, no knowledge. Certainly, I read all the posts I can find on a subject, but I NEVER make a recommentation without personal experience. I have never installed or used an exhaust brake, and I would never tell anyone how to install one!!! That's rediculous.

Regarding the temperature of the shower, I might put a gauge there, since I really don't want to scald myself....make sense to me.

Again, directly from CUMMNS, the pyro should go POST TURBO....my son is an over-the-roard trucker, and guess where the pros have there probes??? Why? because it give them a better reading of the temperature of the turbo, not the exhaust valves...

As far as installation, it would have been a lot easier to drill and tap the exhaust manifold than to disconnect and remove the down pipe from the turbo...I sure don't understand, I guess....

 

Like I said in another post. I consulted three cummins certified mechanic's. All with 20+ years of experience and was told to put my pryo POST turbo. I also talked to several diesel mechanics, same answer. Get it as close to the turbo (POST) as possible. I tend to listen to the certified experts with many years of experience. Its your truck/$$, you can buy another...

 

I also NEVER owned the MANY makes and models I handled service on for 25 plus years.Lots of DOCS never had the aliments they treat! I just know until this 3rd generation crowd I NEVER read a post in 10 years suggesting the trans temp gauge in the pan or a Egt probe post turbo.The OVER THE ROAD truckers I have talked to in the past always commented about EGT's being a 1250 to 1300 degree red line.That sure never came from a POST turbo reading now did it? Stick the probes where ever you want.Its your truck.I just know what I've read to get a ACCURATE temp reading.Cool down in the 300 degree range and EGT a max of 1300.You won't get that post turbo.Was just on a FORD site and there was same discussion.Directions being given on where in the exhaust manifold to drill and tap! So these EXPERT mechanics also gave you the max temp and cool down temp to be aware of post turbo? What were the temps?

 

Obviously, this discussion is going no where...apparently all the mechanics, over-the-road drivers, and even the manufacturers are wrong...

I guess I'll just have to live with my truck with its melted turbo, and fried tranny....ouch!!!

 

SHUT-UP! We are all dumber having for read this childish argument. I thought that at some point there might actually be some sense involved in this thread but NO just petty bickering between guys who think that they know the correct and only way to do something. Some guys want post readings, so be it. Others want pre, thats fine as well, but don't force your opinions on everyone else in this site because your to hard headed to turn away from a moronic argument.

 

WHOA.....I think you got it all wrong....I don't care where people put their probes...I only started this thread to note that my readings seemed to be lower than what I expaected based on what I have read here....

In no way would I force my opinion on someone else....I have just been trying to indicate that their ARE valid alternatives...that's it...

I never once said I was correct....just trying to get an idea regarding gauge readings....geesh!

 

I agree with simpickin, bunch of whinnin kids.

 

Not to be childish but WHAT are the POST EGT readings for MAX EGT and for COOL DOWN EGT? I know what it is for PRE TURBO.(300 and 1200 + or - )What did the experts give for POST readings?

 

What is MAX safe Egt's post turbo and what is cool down temp post turbo?

 

Know one knows! Even all those mysterious OTR truckers and mechanics.

 

Not to force my opinions on anyone , here's what I did when I was driving OTR. I never let my Pyro ever go over 1100 (probe post turbo on most OTR trucks). If it got close, I'd drop a half a gear (18 speed double over). After getting home to the yard, I'd let it idle long enough to check tires, lights, and unpin from the trailer before shutting down (5-10 min.). I can't comment on the exact temperature because I never looked. I just let her idle a bit for cooling off.

 

I run 2 Pyros.

1 Preturbo to KNOW FOR CERTAIN what my engine is doing.
1 Post turbo to know when the Turbos are cool enough to shut down. Pre-post= temp across the turbo.

Automatic trannies should have the probe installed in the hot line out of the transmission. Scott as Mass Diesel makes these lines with the bung in them .... that way you know how hard you are working the trans before the fluid gets cooled from the heat exchangers.

JMHO for what it is worth.

I have seen better than 500F difference in a post turbo probe while hauling heavy compared to my preturbo gauge.... most folks do not realize that exhaust flow only accounts for 35-40% of the energy to drive the compressor.... the rest is in heat energy which is absorbed by the turbo.

Something to think about. All things being equal, we could drop 1000F on EGT's... all you need to do is put the probe in the exhaust tip. Problem solved!

 

as far as the post turbo location in heavy trucks, i have read many books that recomend 12" post turbo... at that far back, it is reading total BS numbers... but the main reason most engine manufactores want post turbo is to save the turbocharger if the probe fails.. $100 probe is much cheaper than $1000 turbocharger...