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exhaust temperature- when to shut down?
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Richard_Muise
Supporting Member of Barthmobile.com 6/17
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posted
Just installed a new 3 way gauge including exhaust temp. How long should I wait for the temperature to go down before I shut the engine down? Or what should the exhaust temp be before I shut the engine down?


R.P.Muise 1994 Breakaway/Cummins 5.9/Allison transmission/Spartan Chassis
 
Posts: 662 | Location: Hampden, Massachusetts | Member Since: 10-13-2005Reply With QuoteReport This Post
Rusty
Supporting Member of Barthmobile.com 2/16
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The reasons to let the temps come down are twofold:

1. Let the turbo spool down, and

2. Let the turbo oil path cool to prevent overheating the oil.

I let mine idle until the temp reaches 250°F or lower.


Rusty

MilSpec AMG 6.5L TD 230HP; built-to-order by Peninsular Engines: Hi-pop injectors, gear-driven camshaft, non-waste-gated, high-output turbo, 18:1 pistons. Fuel economy increased by 15-20%, power, WOW!"StaRV II"

'94 28' Breakaway: MilSpec AMG 6.5L TD 230HP

Nelson and Chester, not-spoiled Golden Retrievers

Sometimes I think we're alone in the universe, and sometimes I think we're not.
In either case the idea is quite staggering. - Arthur C. Clarke

It was a woman who drove me to drink, and I've been searching thirty years to find her and thank her - W. C. Fields
 
Posts: 7734 | Location: Brooker, FL, USA | Member Since: 09-08-2005Reply With QuoteReport This Post
MWrench
Supporting Member of Barthmobile.com 03/22
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I think it all depends on where the temperature send is located. I shut mine down at 400-450. I have done this for 95K miles. (I have 170K total now) When I start up in the mourning, the
EGT will go up to 250-300 just on idle before any driving.

My temp sender is 3" aft of the turbo. Not the most ideal place but it will not get temp sender pieces in the turbo if it fails.


Ed
94 30' Breakaway #3864
30-BS-6B side entry
New Cummins 5.9L, 375+ HP
Allison 6 speed
Spartan chassis
K9DVC
Tankless water heater
 
Posts: 2177 | Location: Los Gatos, CA | Member Since: 12-08-2005Reply With QuoteReport This Post
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    Forums    Tech Talk    exhaust temperature- when to shut down?

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