Engine/Transmission (1998.5 - 2002) EGT cool down before shut off.

[brobeson]

I have seen in the past where people have posted that they let there EGT cool down to ??? before they shut down the motor.



I have a pre turbo gauge. What is a save temp before shut down.



Why do we cool thgem down befor shut down?



TIA



Bob

 

[Jim Fulmer]

Bob, I shoot for 300 on pre turbo, sometimes it won't get there with my fueling, waiting on the temp to cool, cools the turbo shaft and bearing and keeps the oil from coking(cooking) up on them, most folks don't cool there stuff before shut down at all. I have 109K on the stock turbo used with the Twins now and have had no problems with it, but I take care of it to a point



Jim

 

[BFC]

In an ideal world, 300* on the pyro (pre turbo) That said, I live in TX and this time of year if I wait for 300, the truck will idle most of the night! When it get to 350* I shut it off.



Glenn

 

[klaybus]

Cool Down

I have my pyro pre turbo & was letting it cool to 300 too but I discovered it would climb to about 350 shortly after shut off so I started going to 250 & then it can't rise above 300 FWIW... .



Clay

 

[Ron Bissett]

Re: Cool Down

Originally posted by klaybus

I have my pyro pre turbo & was letting it cool to 300 too but I discovered it would climb to about 350 shortly after shut off so I started going to 250 & then it can't rise above 300 FWIW... .



Clay

The EGT is the gas flowing by the probe it will be heated or cooled by the flow after the shut down the heat in the casting will heat the probe by induction this should not hurt the turbo at its location . Ron in Louisville KY Metro.

 

[new2dodge]

mine is post turbo and it too could idle all night in december, all it ever drops to is 300 on the gauge. my feeling is just use your head,they cool down pretty fast especialy when empty.

 

[jlhartak]

Coking is not the problem it used to be, modern petroleum oils resist coking much better that in the past and good synthetics (Amsoil) have thermal break down temps approaching 500 deg. F. Just remember when you pull into the rest stop on top of Monarch Pass (11,300ft. ) after pulling your 5er up from Salida to let your Cummins idle for a while!!

 

[jlhartak]

Opps, I see you all are in Vancouver WA. so make that the top of the Blue mts. pulling up out of Pendleton!!