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Discussion Starter #1
Hey guys, took a quick look around but couldn't find anything on pyrometer's. Just curious on what is to hot and when I need to back off before something bad happens. Got the 7.3 powerstroke, just put some stage 1.5 injectors and a TS 6 position chip in it. Before the upgrades the hottest it would get was 13 and that was really workin her pretty hard. This morning I had about 8500lbs behind me and as soon as I started climbing it would get up to 14 and still goin. Pyrometer only goes to 15.5 so I would back off ever time it got to 14. Cruisin at 65 on flat it stays about 8.5-9. Just wondering what temp I need to start worrying about damage and where it should be at? The sensor is screwed in on the driver side manifold. It was already installed when I got the truck. Is that a good spot for it?
 

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I wouldn't run anything over 1200 for very long and try to keep it under 1100.
 

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Thanks, I'll keep an eye on that. Is there any other way to help keep that cool other then just backin off the throttle?
 

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The problem with running the pyro probe in the manifold is that if the tip ever broke off it would end up going through your turbo. Besides that it is only reading one bank and isnt as accurate. With that said i know alot of guys run it there and have no problems. As for keeping it cool if you have already done intake, downpipe and exhaust your next step should be an intercooler
 

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Discussion Starter #7
Thanks everybody, I think my next step is gonna be an intercooler. Pulled about 9000lbs on a 300 mile trip and the only time I had to slow down from 70mph was climbing a hill or a strong head wind. The temp sensor is plugged into the exhaust manifold if I remember correctly. It's been a while sense I looked at it. I should probably check again haha
One more question for ya. What kinda damage am I lookin at if I run it to hot for to long? It got up to 1400 a few times on my trip but only for 3 or 4 seconds.
 

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If your towing and the EGT's start climbing as you go up a grade, try downshifting. It will raise RPM's, move more air and lower EGT's.

I've done this for years, it works good.
 

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I had the same problem as you, installed Banks Intercooler and now I have not seen over 1250 degrees and that is pulling 37' fifth wheel with 14' trailer behind it through the mountains of Colorado. Best money spent so far.....
 

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Thanks everybody, I think my next step is gonna be an intercooler. Pulled about 9000lbs on a 300 mile trip and the only time I had to slow down from 70mph was climbing a hill or a strong head wind. The temp sensor is plugged into the exhaust manifold if I remember correctly. It's been a while sense I looked at it. I should probably check again haha
One more question for ya. What kinda damage am I lookin at if I run it to hot for to long? It got up to 1400 a few times on my trip but only for 3 or 4 seconds.
You didn't do any damage at 1400F for a few seconds. But as noted for the future, keep the EGTs to 1200F max to surely avoid problems.

I watch the pyrometer closely when towing upwards as I don't have an intercooler and it's easy to exceed safe temps. Simply downshifting to give the engine some relief has always worked for me.
 

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I've had mine over 1200 for 5-10 minutes at a time on many occasions. People worry about aluminum melting at 1200, but the pistons are not pure aluminum.

It's super easy to exceed 1200 at high altitude and sometimes it's unavoidable, depending on the load.
 

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Discussion Starter #12
Thanks guys. She does pretty good. 4th gear can pretty much climb anything except for a couple times on a 8% gread with a pretty strong head wind I had to put it in 3rd. I just hate having to slow down when I've got plenty of power to go just cuz I'm getting to hot.
 

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Yep, EGTs often determine my speed limit when climbing in the mountains with a tow.

An alternative is to install an intercooler. It's a good upgrade, but it takes up a lot of space under the hood with all the tubing and such. I like the more open engine space to see and work better under there. Also, an intercooler adds another point of failure, with leaks from all the tubing and joints not being uncommon.

I choose to just downshift and/or back off the speed when I'm towing into the sky. It saves a few bucks in fuel, and I can usually keep up with the heavy truckers anyway.
 
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