Mkline

Since I was in such a hurry to get my gauges in and do some mods, I never checked the EGT's while stock. Just wondering how high you guys have had the pyrometer while the truck was stock

12valve

ive heard of a guy with a 215 pump, 1250 pulling a hill

Iron City

highest I've got is going up a long shallow uphill grade, almost floored in 5th gear, ~75 mph, it was up to 28 lbs boost and egts were around 1100-1150. Truck was unloaded. Just as a note, my stock plate is pushed full-forward.

RowJ

If you "Lug" the motor long enough, when heavy and uphill, I'm sure you can do a lot higher....but 1150* is usually about max I've ever heard when driven properly.

RJ

Lunyfringe

Altitude can drive it up, too.. I regularly saw upper limit of ~1250 when pulling a trailer up a grade when more than 6000' above sea level.. with no lugging

drumrunner

I'm trying to learn about the CTDs and what to watch out for. I've noticed high EGTs (1200-1250) lately pulling around 6000 lbs and no real big climbs. In Colorado, elevations in the 6000 range. Is this a bad thing? I'll try not to let it do that very long so not to damage anything so I'll shift down to 5th gear and it'll help a little. Yesterday, running empty on a wee little hill, she ran up to 1100 @ 55 mph! On the flat it'll run around 600 to 800. It's been feeling like a dog at times too. What's up with this?? Am having the Cobalt and Diprocal(?) guages replaced with the Edge Juice w/Attitude today mainly because they have been through 3 FP guages and none of them have worked.

RowJ

Summer time in the Rockies ..... warmer temps thin out the already thin air! That would be my guess?

If it was not for 6 months of 90+ deg. around here, I'd still be very happy with a big single turbo.

RJ

Lunyfringe

that's it exactly... and don't be concerned with 1250 degrees- Cummins is rated for that all day long... the higher you go above 1250, the less time you can spend there.. think of it like a duty cycle... once when not paying attention towing a grade, I spent about 30 seconds at 1350-1400 (not stock)... I noticed a slight smell, that reminded me & I checked the guage, and backed off to about 1150-1200- that was over a year ago, and it's still running strong.

drumrunner

That's what I was hoping to hear! I'm planning on keeping this truck for a long time and am trying to learn all I can about these CTDs! I must say, this is a fantastic place to learn!

Willdsl

I have read many times that 1250* is the max and it's said you don't want to stay there long at all.

Teddy Bear

Most would say that you can hold 1250* for quite a while without causing any damage. Although it is a little toasty

DodgeCowboy

my truck hit 1200 last weekend when it was running really rough it was like a major paper weight. I took to the shop they said nothing was wrong with it but what I have gatherd is they me have inaverntly re set my apps and now this truck runs like it should its nice again. Weird thing is my egts droped about 50 to 100 degrees depending what I am doing at the given time.