EGT how hot is too hot?
Just installed Raptor 150 and draw straw so now fuel pressure is not an issue and I can open up the throttle if I want. If I get on it real hard with my edge on 5 my EGT gets up to over 1500. I back out of it when it hits 1500, my question is how hot is too hot?
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from what i've heard 1200 is as high as you want to push that turbo, but it's up to you 1500 for a couple seconds probably won't hurt anything
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OK, I was thinking that 1500 was probably too hot. I guess I'll set my alert at 1200 and keep it safe. Thanks Bobcat.
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yep, i could be wrong but i've heard 1200 is where you should calm down, and 1350 on common rails with stock turbo's so everyone is different
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I can't see your signature as I am on my Blackberry, what turbo are you running?
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Originally Posted by RAWilliams
(Post 592904)
I can't see your signature as I am on my Blackberry, what turbo are you running?
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being that i fried the rings on my Dmax @ 1500° i don't recommend it... but i bet the 6BT is stronger than a LLY :)
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Yeh, I'm just runnin the stock turbo
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An HY35, that has a a wastegate with NO hose running to it? If so, plug that bugger OFF! I did that for many months and never did any damage to the turbo, and was able to reduce m EGT's by 400 degrees. With it plugged, and making 30 PSI I never went over 1100 EGT's, before my injector upgrades. With the wastegate active and set to 18 PSI, I easily hit 1500 EGT's.
It is a little tricky to plug off a wastegate that it a metal tube, but is possible. I took a machine screw, 10-24 size, and thread it into the tube that inters the compressor housing. After it was in there, I used a bench grinder to reduce the size of the head so it can fit back into the compressor housing. Worked like a damn, that's for sure. I sold that turbo to a buddy I used to work with 6 months ago, and it is still working 100%. Granted I did remove the plug before I sold it. Best of luck, let me know if you need any more info. |
you can run 1300* all day long and 1400-1450* for short bursts on these cummins engines much over that and will start melting things down so i would say 1500 is too hot
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Great info! Thanks.
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yep 1500 is toooooooo hot
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I've heard and practice staying under 1350* most of the time. I don't like to see +1200* myself, but that's just me. Hitting 1400-1500* for a second or two shouldn't hurt anything as long as you don't make a habit out of it. Also incase you don't know, it's a good idea to let the EGTs drop to about 350* before shutting the engine down. It helps protect the turbo bearings from being damaged by the hot oil cooking off!:tu:
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1250* is where i draw my line. i dont want to drop my money in to new pistons and such right now lol
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While cruising EGT's, with a properly sized turbo, should be in the 600° to 800° degree range.
Under normal load circumstances Gale Banks and most other diesel authorities, like Jay K.Miller, the turbo guru, consider 1250° to 1300° degrees F a safe turbine inlet temperature range. If you see temperatures above 1300° you run probably out of air because of altitude or a compressor problem or your fuel system is simply overfueling. Operating your engine consistently above normal accelerates wear. If you run above 1400° is just a matter of time when you have to pay the bill |
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