Yes, Another Pyro Install Qestion

[DIESELMAN]

OK, pop quiz... On my new 2003 3500, where should, in common opinion and why, I install my Pyro?



#1 should be most common temp, but I think it is isolated by the webbing, that I think, isolates the manifold. It would be installed horizontally here. Not sure of how much room there is for the probe here.



#2 Vertically, inline with Cyls 1-4 ( does it matter? )



#3 Same as #2, but only from 5 and 6, Do they run hotter?



#4 Post Turbo, How much cooler will it be here?



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[Scooby]

A flat spot is always nice to get even thread lengths and (hopefully) a more sealed junction - which would make me think that spot 1 would be desireable. On the other hand, I wonder if you mount it horizontally like you'd need to for position 1, would that create more stress on the thermocouple? In that case, position 3 would be favored over 2 IMHO, since you'd think that the rear 3 cyl would run slightly hotter than the front due to less airflow. Post turbo is a great location for shut down temps. The differences vary depending on equipment... . I'd say you'd see an average (while driving) of 275-400 degree difference (lower on post turbo). At shut down, the post turbo is typically hotter than pre-turbo by 50-75 degrees (and then the temps converge over time).



I've got three thermocouples in mine (two in the exhaust manifold and one post-turbo).

 

[David Muench]

Good question, one I've been pondering myself. .



I guess I was planning on going with #1 roughly, because that's where I have the pre turbo thermocouple on my 2001 (excluding manifold differences). I am not sure if I'm going to bother with a second post-turbo pyro like I did on my 2001, I am not sure if it's worth the bother. . Cooldown times can be estimated close enough, IMHO.

 

[JR2]

Since this is new territory for everyone I would think the thing to do would be to remove the exhaust manifold and have a look at the internals of it. Position 1 may be similar to the current manifolds and have a web in the middle, so you might have to drill off center in pos 1. Maybe wait a few months and one of the BOMBer companies will have pulled the manifold off and can give you a better idea. I know if you go to position 1 you are going to need to be real careful with the cuttings from the bit as they will fall down into that expensive turbo... .

 

[DIESELMAN]

..... Did you say wait... . can't do that, irresistable force at work. Engineer with a package from UPS can't be stopped!



so.....



Off comes the turbo so I can give the new manifold a proctological for location, unless someone has already done so.



Now for the guage mounts, hmmmmm... .

 

[Bigsaint]

Holy crap Batman

That looks like it came right out of a sci-fi novel ! I agree with JR2, pull the manifold off and see where those webs are going. I'd try to monitor the back 3 for the hottest temps. , if possible. I would go post turbo, unless you plan to remain unBOMBed. Guessing you will be that way for awhile, is anyone making anything to boost these beasts ? Sure that TST and others have something in the works.



Congrats on the new truck and best of luck !!!



Scott W.

 

[JR2]

Did ya ever drill the hole??

 

[DIESELMAN]

Yes, but post turbo, until the bombs start dropping.



http://www.redilynx.com/~john/gauge.htm



I'm waiting for the BD Turbo mount brake to come out, then I will install pre.

 

[mlockner]

Dieselman

I thought you could only get a 3500 SRW in a short bed not a long bed. Maybe I was wrong? Be nice to have one with a long bed.

 

[yogibear]

Anyone figure out the proper place to drill yet? Someone at DD should know, they are surely monitoring the temps with the tests they are doing. Would appreciate someone at DD, or anyone else to give us some input on this. TIA,

Larry

 

[DIESELMAN]

Originally posted by mlockner

Dieselman

I thought you could only get a 3500 SRW in a short bed not a long bed. Maybe I was wrong? Be nice to have one with a long bed.

Thinking is a bad habit, I kicked that habit 'long time ago, yes SRW LB.