How hot is HOT?

[rattlebox93]

Last night i got rid of my worn factory ball and socket throttle linkage and made a deal out of sweged tube and heim joints. whil messing with it i also reinstalled my 4200 spring and did about a 3/16" timing bump (also has a tooth jumped and pump was all the way retarded).... i tool it out and make a pass down a country road it it got to about 1250 or soo i kow a commonrail it as nothing to see 1800*'s but is 12-1300 hot for a 12v i have coated pistons so that should help.. will more timing help cool it? what do you guys think? also the engine is painted with the good actual cummins brand paint and in the 5xxx or som miles since beeing put back togeather it never even so much as blackened an exhaust runner and after last night all 6 are black..... ok well opinions would be greatly appreciated thanks dj

[BILTIT]

Cummins rated these engines at 1250 100% duty cycle (continous). They can handle higher for short periods.

[oldestof11]

And you have coated pistons. Good for 1400 or more.

[Hansen01]

i run 1400 degrees all the time if i get on it, no longer than 10 seconds tho, ive also had it up to 1600+ a couple of times. Ive had the head off twice and pistons looked like new both times. i think it reaks more havic on yur head than pistons, as my head was toast

[remi]

are these temps pre or post turbo

[The_Head]

pre turbo

[rattlebox93]

Pre turbo

[RumbleFish]

Pre turbo

[Tacoclaw]

Pre turbo.

[Tsbourne09]

Pre turbo.

[oldestof11]

Puuuuurrrrrr...... Post turbo 1400 you should be fine with coated pistons.