is 1400 degrees gonna melt pistons?
 

My egt reads 1400+ at 10 psi. Is this too hot that its gonna melt pistons?

Re: is 1400 degrees gonna melt pistons?
 

Where is the probe mounted?Is that at full throttle run or cruising?That doesnt sound too hot but I think alot of variables come into play.

Re: is 1400 degrees gonna melt pistons?
 

when i start to accelerate cruizing. also, monitoring the peak and hold feature, EGT recorded was 1500+. AFR is about 11-12.

Re: is 1400 degrees gonna melt pistons?
 

Re: is 1400 degrees gonna melt pistons?
 

shouldnt the egt lower when your accelerating? and i dont ever think ive seen my friends tuned civic go the high maybe your running lean? my friends crusing on the freeway is around 1400 but flooring it lower to aobut 1200 or so, and by how hot the gasses are you can tell what your a/f ratio is.

Re: is 1400 degrees gonna melt pistons?
 

Typically, if you keep the EGT's lower than 1550 degrees, you will be fine. Anything higher and you will be turning your block into a foundry. I usually try to keep the temps at 1500 and A/F around 11.75-12.5.

If you find that your A/F is good, but you have high EGT's, then your timing is in need of adjustment. I had a vehicle that had really high EGT's and ran rich on the A/F. I found that the cam gear has skipped a tooth.

Re: is 1400 degrees gonna melt pistons?
 

on the collector

Re: is 1400 degrees gonna melt pistons?
 

If its on the colector before the turbo, 1400F is plenty cool. What is it under WOT? 1600F is about as hot as most people want to mess with on pump gas. I've run my car as warm as 1650, but you better know your tuning is right. to me...1500F leaves a lot of extra room for error and you're still leaving some "safe" power on the table that you could be utilizing!

Re: is 1400 degrees gonna melt pistons?
 

Yo-yo-yo-you Craaaaazy. I like you, but yo-you're craaaaazy man.


JP

Re: is 1400 degrees gonna melt pistons?
 

Like a fox!!!

I'd much rather run a bit rich and have room for an ocaisional "hiccup" than run it on the verge of too lean. I'd rather keep my pistons in one peice and not make a bunch of really expensive ash trays.

Re: is 1400 degrees gonna melt pistons?
 

You guys scare me.

1450 deg F at WOT should be your target max EGT. These are not factory forced induction rides, with beefier cooling systems, forged pistons, valves/valvetrain, etc, designed for all the excess thermal load. Factory FI cars can deal with higher EGTs because they are designed to get rid of all that extra heat.

Re: is 1400 degrees gonna melt pistons?
 

None of my turbo dodges have forged pistons. And a few share the same cooling system as my N/A cars. It's all about the tune. The only differences in my turbo cars and my N/A cars is the composition of the exhaust valves and the Static compression of the pistons. My Turbo 2.5L has a static compression ratio of 7.9:1, while the N/A 2.5L has the 9:1 ratio. My 3.0L is even 8.85:1 CR.

The turbo cars exhaust valves are made of stainless steel to handle the excessive exhaust temps before the turbo. All else is equal between the two.

Re: is 1400 degrees gonna melt pistons?
 

If you aren't detonating/pinging, 1600 degrees won't hurt anything. Its the detonation that tears things up...