EGT/ Pyrometer sender best location ???? - Defender Source
Defender Source  

Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions


Reply
 
Thread Tools
  #1  
Old August 8th, 2008, 11:56 AM
Uncle Douglas's Avatar
Uncle Douglas
Status: Offline
Doug Crowther
A defender in every driveway-motto
D-90 Source Vendor
 
Join Date: Dec 2007
Location: Gods Country- Central Virginia
Posts: 11,839
Registry
EGT/ Pyrometer sender best location ????

I have been trying to figure out where these are best located. It seems there are two schools of thought- one 5-6 inches from the exhaust port (ie after the turbo) or before the turbo in the exhaust manifold itself. VDO sells a weld on bung so I'm guessing after the turbo on the downpipe ? This will be for a 200tdi Defender engine where the exhaust manifold is above the intake so easily accessable.
__________________
Good judgement comes from experience,experience comes from bad judgement.

Dividing Creek Imports
Worldwide Vehicle Shipment and Importation Service
Restoration & Modification work


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

410.693.1391


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old August 8th, 2008, 01:33 PM
RyanS's Avatar
RyanS
Status: Offline
Ryan
'93 NAS 110
Member
 
Join Date: Jan 2004
Location: Escondido, CA
Posts: 426
Before the turbo is preferred since you will get a more accurate indication of the max temp in the head. After the turbo is generally used if it's difficult to install the EGT sensor in the exhaust manifold. I haven't tested it myself, but have heard that the after turbo location will be about 200 deg lower than before the turbo. So keep that in mind for max EGT's if you locate it downstream. I'm not sure about the 200 Tdi, but I thought the 300 Tdi's have a blank cover plate on the exhaust manifold where you can add a bung and install the EGT probe.
Reply With Quote
  #3  
Old August 8th, 2008, 07:49 PM
Uncle Douglas's Avatar
Uncle Douglas
Status: Offline
Doug Crowther
A defender in every driveway-motto
D-90 Source Vendor
 
Join Date: Dec 2007
Location: Gods Country- Central Virginia
Posts: 11,839
Registry
Does the sender in any way impede the exhaust if put infront of the turbo ? 200 degree swing seems huge
__________________
Good judgement comes from experience,experience comes from bad judgement.

Dividing Creek Imports
Worldwide Vehicle Shipment and Importation Service
Restoration & Modification work


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

410.693.1391


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old August 8th, 2008, 09:01 PM
RyanS's Avatar
RyanS
Status: Offline
Ryan
'93 NAS 110
Member
 
Join Date: Jan 2004
Location: Escondido, CA
Posts: 426
EGT probes are relatively small in diameter, and won't cause a problem ahead of the turbo. I would extend it about halfway into the flowpath. A problem you could create by putting it ahead of the turbo is dropping chips into the turbo if you have to drill/tap a hole in the exhaust manifold. Best to remove it to do that work.

Regarding temp drop across the turbo, it's actually a good thing. Part of the turbo's job is convert heat energy (along with flow energy) into work to turn the compressor wheel. So the temperature drop is actually indicative of this.
Reply With Quote
  #5  
Old August 8th, 2008, 10:15 PM
Retrofit's Avatar
Retrofit
Status: Offline
Pat
1984 110 CrewCab 200Tdi
Member
 
Join Date: May 2006
Location: Quebec City, Canada
Posts: 474
Sender unit ...

I had a sleeve welded on the exhaust manifold between the number 3 and 4 cylinder.

I will post pics in a bit.

Pat

Follow-up Post:

Here goes !

Pat
Attached Thumbnails
Click image for larger version

Name:	IMG_0358.jpg
Views:	297
Size:	41.8 KB
ID:	14693   Click image for larger version

Name:	IMG_0359.jpg
Views:	680
Size:	52.6 KB
ID:	14694  

__________________
" You never, ever, ever go full retard ! "

Kirk Lazarus, Tropic Thunder


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
color="Red">CanadaOverland.com
Reply With Quote
  #6  
Old August 8th, 2008, 10:18 PM
JimC's Avatar
JimC
Status: Offline
Jim Cheney
NAS 110 #145
Site Team
 
Join Date: Sep 2003
Location: Stuttgart, Germany
Posts: 7,154
Registry
Mine is on the EGR blanking plate on the 300tdi - I guess that would be "downstream." That makes sense since I have never have never gotten above 900 in the Siskyous pulling a trailer.
__________________
Jim Cheney

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #7  
Old August 9th, 2008, 11:31 AM
Uncle Douglas's Avatar
Uncle Douglas
Status: Offline
Doug Crowther
A defender in every driveway-motto
D-90 Source Vendor
 
Join Date: Dec 2007
Location: Gods Country- Central Virginia
Posts: 11,839
Registry
Pat,

Perfect ! Many thanks.
__________________
Good judgement comes from experience,experience comes from bad judgement.

Dividing Creek Imports
Worldwide Vehicle Shipment and Importation Service
Restoration & Modification work


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

410.693.1391


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
Reply

Lower Navigation
Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

Thread Tools

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
VDO Vision EGT pyrometer sensor installation. sundogcwolfe Defender Technical Discussions 10 September 25th, 2011 02:31 PM
200tdi EGT probe location ... Retrofit Defender Technical Discussions 3 May 15th, 2007 12:16 AM
Temp Sender Location DJ Menasco Defender Technical Discussions 10 August 28th, 2006 01:24 AM
Location for ARB Compressor Seriesman Defender Technical Discussions 10 August 15th, 2004 04:09 PM
Thread size for temp sender mgrgpg Defender Technical Discussions 3 July 1st, 2004 12:00 PM


All times are GMT -5. The time now is 07:50 AM.


Copyright