Pyrometer probe location? - Ford Powerstroke Diesel Forum

6.0L Performance Parts Discussion What has or has not worked for you?

 
LinkBack Thread Tools Display Modes
post #1 of 8 Old 01-29-2010, 06:46 PM Thread Starter
Member
 
rescuemedic13's Avatar
 
Join Date: Jan 2010
Posts: 72
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Pyrometer probe location?

Is it better to have the pyrometer probe located before or after the turbo? I have heard that pre turbo gives the most accurate exhaust gas temp. Also, what is a good brand of gauges and pillar pods.

rescuemedic13 is offline  
post #2 of 8 Old 01-29-2010, 06:56 PM
back to business




 
07OUTLAW's Avatar
 
Join Date: Oct 2007
Location: Not AK right now
Posts: 3,561
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
PRE turbo is the way to go.

ISSPRO for the gauges, IMO

Duane
2007 - F-250 Lariat OUTLAW
1983 - MERCEDES-BENZ 300D




07OUTLAW is offline  
post #3 of 8 Old 01-30-2010, 03:01 AM
Member
 
Join Date: Jun 2007
Location: White Oak, IN
Posts: 80
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Pre turbo all the way...it really doesn't make much difference what the temps are after the turbo since the gasses going into the turbo is what can hurt it.

My pyro and a-pillar pod are both from Autometer...it's really more of a preference thing I think. Just decide what you think will look the best and want to look at when you are driving.

2005 F250 4x4 6.0L PSD, 6 Speed hand shaker
Dark Shadow Gray

SCT xCal2 with DJ's Tunes, MBRP Turbo-back Offroad exhaust...bye, bye kitty and muffler.

Finally studed, EGR deleted, blue spring, Zoodad and AFE CAI
Groundhawg is offline  
post #4 of 8 Old 01-30-2010, 06:50 AM
Compression Ignition Addict
 
Calkidd's Avatar
 
Join Date: May 2009
Posts: 388
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Quoted: 3 Post(s)
Feedback Score: 0 reviews
Egt Probe Placement ???

Last edited by Calkidd; 01-30-2010 at 06:55 AM.
Calkidd is offline  
post #5 of 8 Old 01-30-2010, 07:02 AM
Compression Ignition Addict
 
Stoker0560's Avatar
 
Join Date: Dec 2007
Location: Grimes, Iowa
Posts: 703
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
mine didnt have instructions, well it basically said pick a spot and stick it..which didnt help much, i put mine just past the last port on the bend of the manifold just before it connects to the up-pipe, anything after that point and the exhaust only gets cooler so its a prime spot.. just be careful, the fitting is a pipe thread, tap too far and you'll run out of threads on your fitting,

another quick tip, put some grease on your tap so the metal filings stick to it and are not in your manifold,

09 F450 CC LB lariat 6.4 black on black 23k miles, stock.. (For now)...


97 F250 SC LB 4x4 7.3 05 Superduty axels, 18" King Ranch Rims, "under the knife"

Former 6.0 Owner. (05,05,03)
Stoker0560 is offline  
post #6 of 8 Old 01-30-2010, 07:06 AM
Mob boss

 
Jarrod B's Avatar
 
Join Date: Jul 2008
Location: Austin Texas
Posts: 26,950
Thanks: 25
Thanked 27 Times in 25 Posts
Mentioned: 2 Post(s)
Quoted: 148 Post(s)
Feedback Score: 1 reviews
always pre turbo. thats the hottest point that you want to monitor. getting it too hot can cause some issues with the parts on the engine.


i recommend ISSPRO gauges. they are decent and look great!

2006 Ford F250 CCSB FX4 6.0

Sold
1997 F350 CCLB 2WD 7.3
1999 F350 CCLB 4WD 7.3
2003 F350 CCLB FX4 6.0





LSP Chapter Director

LSP Group Threads
http://www.powerstroke.org/forum/lon...-powerstrokes/
Jarrod B is offline  
post #7 of 8 Old 02-03-2010, 09:49 AM
Powerstroke.org Fanatic
 
MichaelP's Avatar
 
Join Date: Feb 2007
Location: Happy Valley, Oregon
Posts: 144
Thanks: 1
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Here is a brief write up on pre-turbo and post-turbo. And I always recommend ISSPRO gauges, but I'm a bit biased

Pre-turbo or Post-turbo thermocouple installation?

Clearly the manifold (pre-turbo) installation is better in almost all circumstances. Many people from the "old days" worry about thermocouple tips breaking off and chewing up the turbo. This fear is a relic from the days of exposed-junction thermocouples (the type still used in laboratories). For 40+ years the automotive standard has been to encase the thermocouple junction in a welded sheath of high-temperature stainless steel. More recently they have also been made out of Inconel stainless, which is rated for continuous use at 2000° F. Here at ISSPRO we have not had a single report of a sheathed-design thermocouple breaking and damaging a turbo, with over 40 years of history.

Measuring pre-turbo tells you more about the temperaures your pistons are seeing, as well as the worst case temperature of your turbo. The temperature difference between pre- and post-turbo can vary anywhere from +500° F (pre-turbo much higher when under heavy load and temps rising quickly) to -100° F (post-turbo hotter immediately after starting downhill after a hard pull uphill).

The only time we see post-turbo measurements as preferable is when monitoring the turbo temperature during shutdown. As the turbo cools off, it is being cooled by the exhaust gases at no-load (which are now cooler than the turbo). These gases get heated up as they cool off the turbo, so you actually see a warmer temp post-turbo. However, the difference between pre- and post-turbo temperatures is minimal by the time the turbo has cooled to around 300° F (which is where most people shut down). In other words, post turbo lets you see the cooldown progress better, but it is nearly identical to the pre-turbo reading by the time you reach the shutdown temperature.

Regards,
Michael Pliska

ISSPRO Engineering Manager

1995 F350 PSD CC DRW, 271k miles
10 ISSPRO Performax™ gauges, Tymar Intake, Gutted EBPV, Tymar 3x4" DP, Tymar 5" exhaust, Cat's lost, Baby Swamps, Swamps tuning, Tricumulator springs and Accumulator Valve, Tru-Cool 4590
1998 S&S 9.5' slide-in camper
33' enclosed tag trailer with 2 drag cars (73 Vega Super-Gas & 74 Vega ET)
92 GMC Typhoon, 73 Chevy Blazer with Pontiac 400, 73 T/A 455
GOA, IDPA & NRA member and certified firearms instructor
MichaelP is offline  
post #8 of 8 Old 02-06-2010, 07:30 AM
Member
 
Join Date: Oct 2009
Location: Toledo Ohio
Posts: 77
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Thats a nice little write up. I was always curious of the difference in EGT temps pre and post turbo.
brittonracing@yahoo.com 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

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