I know this is probly not the best thing for my cracked block but i'm not real worried about that, seein as though i have a motor sitting in garage waitin to go in but i don't wanna completly smoke the one i the truck, I have a guy from ford who's willing to look at the block " not that i expect anything from ford " but if they open it up and the pistons are melted how far will i get? so my question is how hot for how long theres a sled pulling event an i wanna get in on it....

 

somebody must have an idea what i'm askin here

 

Sorry, but with stock injectors, you arent going to make ANYWHERE near enough heat to even think about melting a piston.

 

thats what i wanted to hear thx i've seen my egts get up to 1275-1300 pulling a steep grade loaded down but was nervous thx for the reply

 

Put a piece of tape over your gauge when you go drag racing or sled pulling if you are worried.

 

i was always told 1200* for an extended period (30sec +) would cause serious problems. what problems would that be?

got me curious now.

 

You would have to hold 1700* for 30 seconds to cause any problems... aluminum in pure form doesnt even melt at 1200* and thats not considering its alloyed with other metals, it is cooled from cooled intake air, cooled from an oil jet below, and cooled from the water jackets surrounding the cylinder.

 

that is what i thought, but not being a motorhead, i was unsure about rings and bolts... and the spec tolerances.

it's the same simple temperature idea that I always throw back in the face of the 9/11 conspiracy theorists.

i've got an understanding of the limits of my 7.3- thanks to all of you here!!

glad your getting better Kris!

 

Also, keep in mind that there's a difference between holding over 1250* for several minutes while pulling a steep grade, and holding even well above that for less than 30 seconds as in a drag race or sled pull.

 

The higher the EGT's, the quicker heat soak sets into the pistons and begins to melt them.

With that said, any time you drag race or sled pull, you aren't hot enough for a long enough amount of time to melt the pistons. Go ahead and have fun at the pull, and let us know how you do.

 

I've had mine at 1600+ racing a gasser chebby for a short time. No (known) issue.

So yes, stock injectors will get you there.

 

A friend of mine has a stock engine, stock injectors, air intake, 4"exhaust, etc, and he melted a piston, mind you he has giant tires...

(stacked chips)

Also, EGTs are NOT combustion temperatures, only exhaust. Exhaust is a lot cooler than actual combustion temperatures.

 

well now parkand, what does EGT stand for?

 

Ummmmm,,,, errrrr

Early... ummm gas .....turbo?

Haha.

I dont know what it stands for, but I know its the thing on the bumper to hook up a ball hitch.

JK, exhaust gas temps.

How are you feeling (OT) ?

 

feelinnnnnn like $1,000,000