cool down - Ford Powerstroke Diesel Forum
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 21 Old 05-31-2010, 08:35 AM Thread Starter
Member
 
Join Date: May 2010
Posts: 45
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
cool down

i was reading on another thread(trying to search 0-60 times) that you should let your diesel cool down.. can someone elaborate on this please.. i usually just shut my truck off when i pull in the driveway no matter how far ive driven it or how got its gotten.
Rwill is offline  
post #2 of 21 Old 05-31-2010, 09:51 AM
Compression Ignition Addict
 
amdriven2liv's Avatar
 
Join Date: Dec 2009
Location: Vancouver
Posts: 3,337
Thanks: 6
Thanked 47 Times in 42 Posts
Mentioned: 0 Post(s)
Quoted: 3 Post(s)
Feedback Score: 0 reviews
For me, it depends on how I have been driving. Around town, I just idle along in parking lots and what have you. I use that to cool down.

When I'm coming home, I let the truck cool down as I drive through the neighborhood.

When towing and working hard, I'll let her cool 2-3 minutes before shut down. Sometimes on Hot days, (when pulling my Travel Trailer) I will pop the hood and check things out to help it cool down.
amdriven2liv is offline  
post #3 of 21 Old 05-31-2010, 09:56 AM
Compression Ignition Addict
 
nccatfan's Avatar
 
Join Date: Sep 2007
Location: Burlington, NC
Posts: 1,007
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 0 reviews
Send a message via AIM to nccatfan
I'll usually sit in my truck and listen to one song before I shut mine down. Mostly just don't want the turbo spooled up when you turn the key off... turbo keeps spinning, but there's no oil flow!


-'99 F250 7.3L PSD 4x4 (SCLB, 6-speed)
-'14 F150 4x4 5.0 CCSB
-'83 Ranger 4X4 5.0
nccatfan is offline  
post #4 of 21 Old 05-31-2010, 10:00 AM
Compression Ignition Addict
 
Ironmover's Avatar
 
Join Date: Apr 2010
Location: All over the dang place
Posts: 523
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
S**t yeah you should cool it down. Under most normal driving conditions it can take 3 minutes or so for the egts to come down to 300* or so. Don't know what most other PSD guys find acceptable but I definately let her rest before shut down, you damn sure don't want to kill it right after rompin hard on it. As amdriven2liv lived said I agree that just easin thru the neighborhood or parkin lot is usually pretty good and then I'll still wait a few moments before turnin it off. Im never in that big of a hurry to go in somewhere. lol

Stock sucks
More torque pleeze

21st century participant of the 2nd amendment
Republican
Ironmover is offline  
post #5 of 21 Old 05-31-2010, 10:12 AM
Compression Ignition Addict
 
amdriven2liv's Avatar
 
Join Date: Dec 2009
Location: Vancouver
Posts: 3,337
Thanks: 6
Thanked 47 Times in 42 Posts
Mentioned: 0 Post(s)
Quoted: 3 Post(s)
Feedback Score: 0 reviews
The following is from BD Power Turbo cool down timer:

""A typical turbocharger can spin in excess of 100,000rpm under load, which will continue spinning when the engine is turned off.""

""The turbocharger is lubricated and cooled by the engine oil, and when the engine is turned off, that oil supply is cut off. If a turbocharger is still spinning at a high RPM when the oil supply is cut off, the internal bearings will utilize what remaining oil is around them then start to heat up - essentially cooking the oil, which causes premature bearing failure. By allowing the turbocharger to slow down to a safe RPM, this bearing failure can be prevented.""

""A very efficient means of gauging a safe time to turn the engine off is by the exhaust temperature. The suggested temperature range to go by is below 400F (with the thermocouple mounted post-turbo). The further away the probe is away from the turbocharger, the lower the shut-off temperature should be. If the thermocouple is mounted pre-turbo, then the shut-off temperature can be higher.""

Last edited by amdriven2liv; 05-31-2010 at 10:18 AM.
amdriven2liv is offline  
post #6 of 21 Old 05-31-2010, 10:17 AM
Compression Ignition Addict
 
Ironmover's Avatar
 
Join Date: Apr 2010
Location: All over the dang place
Posts: 523
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Hey Sean, off hand you know of how far down on the DP a pyro probe is usually mounted? Is it more of a preferance or have people found an optimal posistion?

Stock sucks
More torque pleeze

21st century participant of the 2nd amendment
Republican
Ironmover is offline  
post #7 of 21 Old 05-31-2010, 10:29 AM
Compression Ignition Addict
 
amdriven2liv's Avatar
 
Join Date: Dec 2009
Location: Vancouver
Posts: 3,337
Thanks: 6
Thanked 47 Times in 42 Posts
Mentioned: 0 Post(s)
Quoted: 3 Post(s)
Feedback Score: 0 reviews
Moyockpowerstroke and others have posted pictures of this probe install. Moyock has been doing a fantastic job of photo documentation of different things. Here is the link to his probe install pre turbo.

Ford Truck Enthusiasts Forums - MoyockPowerstroke's Album: EGT Probe installation
amdriven2liv is offline  
post #8 of 21 Old 05-31-2010, 01:21 PM
N.S.D.Q.


 
HeavyAssault's Avatar
 
Join Date: Oct 2007
Location: Middle VA
Posts: 4,870
Thanks: 26
Thanked 93 Times in 82 Posts
Mentioned: 0 Post(s)
Quoted: 65 Post(s)
Feedback Score: 3 reviews
I have found that waiting more than 3 minutes is quite often long enough. Watching my EGT gauge I'll hit 375*F or cooler then shut her down. I got 129k on the original turbo and injectors using synthetics across the majority of those miles with ZERO issues.

Suggestion: Get an EGT gauge and watch it for yourself. Find what temps you feel are reasonable and shut her down. I think this mentality is from gasser turbos which run over 1000*F at idle!


Officially The Biggest Midget In The Game
(In support of Zmann's request)

HeavyAssault is offline  
post #9 of 21 Old 05-31-2010, 01:26 PM
My 6OH Hates Me


 
mudrunninpig's Avatar
 
Join Date: Sep 2007
Location: Nexus of the Universe
Posts: 24,842
Thanks: 8
Thanked 27 Times in 26 Posts
Mentioned: 1 Post(s)
Quoted: 19 Post(s)
Feedback Score: 1 reviews
I have a turbo timer on my rig. I can set it from 1-120 minuites and can pull the key and lock the doors. the truck will say running during the cool down time then the truck will shut off. depending on what Im doing, 1-3 minuites is enough time. I just dont like sitting in the truck while the egt's drop.

Mike




"The Iron Pig"



mudrunninpig is offline  
post #10 of 21 Old 05-31-2010, 02:02 PM
Compression Ignition Addict
 
mustangman02232's Avatar
 
Join Date: Sep 2008
Location: ludlow MA
Posts: 932
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 0 reviews
Send a message via AIM to mustangman02232 Send a message via Yahoo to mustangman02232
400* (post turbo) is where i wait for mine to get to


2009 F350 CCSB Lariat 5.4
fisher MM2, 20% tint, leveled

2003 mustang cobra vert
SLP LM1, CAI, diablow tuner

2004 F350 reg cab 4x4 6.0 (SOLD)
exhaust/tune/deleted, dieselsite coolant filter, CAT ELC, blue spring, fisher MM2,
13.9 @95 mph

2002 Mustang 3.8 auto vert boltons (SOLD)
90 F350 RCLB IDI (SOLD)
mustangman02232 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome