max EGT's ( short duration)

[a64pilot]

You guy's that are running these comp boxes for 1/4 mile times etc. Mike , King D etc. How high are your EGT's getting?
I know that there is a vast difference between sustained EGT's and short duration (10 sec. or so) and am wondering how high your's have gotten.

[sdaver]

mine will go off the scale above 1600(autometer)if you let it redface.gif dave

[king D]

my egt needle looks like a propellerit***t keeps going and going and going,but more to the pointif you add lots of hp you add fuel and if you are giving off black smokeyour not burning all of the fuel thuis heat is produced,a little nos will go a long ways in dropping egts....ie..when i hit the nos the egts slowly start falling back to a more acceptable level

[mtomac]

on the 13.16 run I hit 1750-1760 degrees in the top of 4th gear and in the top of 5th gear. My analog gauge was pegged at 1500 degrees for 10 seconds on that run.

[03BlueHD]

So how would one go about lowering EGT's? Intake? Exhaust? What other mods could be done?

My truck stock with Hot Juice and Amsoil air filter throws the same EGT's as a friends who has Hot Juice, AFE intake and CAT back exhaust, so his exhaust doesn't seem to be doing much. Is the trick to get a "turbo-back" exhaust?? :confused:

Need to lower my EGT's so I can hammer on Level 4. :eek: :D :cool: :D :eek:

[03BlueHD]

OK, so what is acceptable for us "daily drivers"??

I always thought that 1400 was pushing it, but apparently I am wrong?

[mtomac]

according to IHI the turbo is designed for continuous operation up to 1472 degrees F (800 degrees C)

[ 08-13-2003, 10:41 AM: Message edited by: Micheal Tomac ]

[a64pilot]

Michael Tomac, King D thanks,
My concern is how much will the pistons take for a short duration as I know it takes time to heat the piston dome (mass) and the short duration heat can be a lot greater than sustained.
Some turbine engines have a very high transient (12 sec. in the case of the GE T700 series) for this reason .
If you guy's have been over 1700 for short durations I assume the failure point is above there.
My concern was engine as turbo's are really easier than a short block.
I don't believe that anyone makes a turbo down pipe exhaust for the Dmax, not room is there?
1400 is pushing it for a "daily driver-towing vehicle" IMHO. Again were talking transient vs sustained here. I'm defining sustained as more than 12 sec. for my own reasons. Nothing scientific
I think we're ready for an aftermarket turbo myself now, we don't need to wait for aftermarket injectors.
Again thanks Guy's, I hate blowing things up and later find out it was common knowledge not to do what I did. :D