Like Tree0Likes

Exhaust Gas Temp Guage

Reply
Old 04-21-2002, 12:23 PM
  #1
Platinum Member
Platinum Member
Thread Starter
 
Tinkerer's Avatar
 
Join Date: Jan 2002
Location: ALTO, MI
My Boats: 2001 Daytona 26, 1992 SCARAB 34, 1989 25 Checkmate Convincer, 1977 Glastron Carlson CVX 18
Posts: 4,144
Cool Exhaust Gas Temp Guage

How many of you guys run one and what is the max temperature you feel safe with? I run a duel digital unit and back off when it hits 1400 degrees. What cylinders do you have your probes in? Mine are in #6.
Tinkerer is offline  
Reply With Quote
Old 04-21-2002, 05:03 PM
  #2
Platinum Member
Platinum Member
Thread Starter
 
Tinkerer's Avatar
 
Join Date: Jan 2002
Location: ALTO, MI
My Boats: 2001 Daytona 26, 1992 SCARAB 34, 1989 25 Checkmate Convincer, 1977 Glastron Carlson CVX 18
Posts: 4,144
Default

No one runs a EGT???
Tinkerer is offline  
Reply With Quote
Old 04-21-2002, 05:22 PM
  #3
speel chekk this fokker!
Charter Member
 
puder's Avatar
 
Join Date: Feb 2001
Location: Locust Valley, New York
My Boats: 27' Scarab
Posts: 5,329
Default

how do you rig up the sensors if you have CMI? Doy ou have to put a hole in them and weld the sensor in place?
__________________
Pardon me, while I whip this out!
puder is offline  
Reply With Quote
Old 04-21-2002, 05:56 PM
  #4
Platinum Member
Platinum Member
Thread Starter
 
Tinkerer's Avatar
 
Join Date: Jan 2002
Location: ALTO, MI
My Boats: 2001 Daytona 26, 1992 SCARAB 34, 1989 25 Checkmate Convincer, 1977 Glastron Carlson CVX 18
Posts: 4,144
Default

What I did was look at a head cut away that Jim V. has and found that if you keep it within 1/16 to 3/32 away from the exhaust head to header flange you can drill the head without getting into the water jacket. So that is where my thermocouples are mounted in #6 cylinder exhaust port.
Tinkerer is offline  
Reply With Quote
Old 04-21-2002, 06:31 PM
  #5
speel chekk this fokker!
Charter Member
 
puder's Avatar
 
Join Date: Feb 2001
Location: Locust Valley, New York
My Boats: 27' Scarab
Posts: 5,329
Default

hmm how big are the sensors? I'm not to sure hwo i feel abotu drilling into the heads. I was thinkgin of mayeb gettgn some kind of spacer that would go between the head and the header. That. coudl be drill though easily. and mount eth sensor. I figure even if it was 1/2" thick the headers woudl still fit properly. I konw eddie marienb sells similar spacer so you can use 454 chevy headers on 460 ford engine. I figure soemthign similar but just a straight spacer with bung in it.

How accurate are those things? I think monitoring the exhaust temp would be pretty valuable assuming teh sensor was accurate.
__________________
Pardon me, while I whip this out!
puder is offline  
Reply With Quote
Old 04-21-2002, 07:30 PM
  #6
pimpthis.com
Charter Member
 
Mrgoodwrench's Avatar
 
Join Date: Oct 2000
Location: LBC, So Cal. Where else?
My Boats: 1998 American Offshore 2600
Posts: 284
Default

I have one on my motor on cylinder # 1. In my opinion it is about the most important guage I have. I am constantly staring at it. Under 7 psi boost I see around 1100-1200 degrees.
Mrgoodwrench is offline  
Reply With Quote
Old 04-21-2002, 07:34 PM
  #7
Platinum Member
Platinum Member
Thread Starter
 
Tinkerer's Avatar
 
Join Date: Jan 2002
Location: ALTO, MI
My Boats: 2001 Daytona 26, 1992 SCARAB 34, 1989 25 Checkmate Convincer, 1977 Glastron Carlson CVX 18
Posts: 4,144
Cool

But what is the maximum temp you feel comfortable with?
Tinkerer is offline  
Reply With Quote
Old 04-21-2002, 08:42 PM
  #8
Registered
 
Cattitude's Avatar
 
Join Date: Jun 2001
Location: Tulsa, OK, Grand, Beaver, LOTO
My Boats: '97 Scarb Thunder, '06 Formula 330ss for sale
Posts: 1,213
Default Whipple system has one!

I've got one on my 454 mag EFI compliments of Dustin. This was one of the significant technical reasons i went with his system vs others. It's tied into an idiot light and the computer etc. I suspect most of the efi systems use it.

It mounts in the merc manifold at #1, I can't remember if 1350 or 1400 triggers it. Happy to have it, any blower or performance motor should have one. I've got one on my cummins too. Both use 1/4" pipe thread if i remember right.
Cattitude is offline  
Reply With Quote
Old 04-21-2002, 09:30 PM
  #9
Registered
 
Join Date: Dec 2000
Location: Flemington, N.J. U.S.A
Posts: 2,164
Default

This is a good topic that got a lot of good response a while back .
I have them on my engines on #1 & #8 cylinders on both motors .They are in a 1" spacer between the head and exhaust manifold . MOst boats would not have the room for these spacers. Mine does .
I was told that the sensor being this close to the cylinder gives false high readings as it is being burnt by flaming exhaust gasses comeing out of the head . I am told that the ideal place for the sensor would be about 3-4" into the exhaust tube of the header . That would be hard to do with water jacketed headers . So we do the best we can . I don't have a lot of experience with mine yet but it runs 900-1200 most of the time . It gets up around 1400- 1500 running harder . I think it is too hot at that but they say it is because of where it is mounted . They say if it was where it should be ,the temps would be a few hundred less .
boot is offline  
Reply With Quote
Old 06-30-2007, 09:11 AM
  #10
Registered User
 
Join Date: Dec 2005
Location: Doncaster Victoria Australia
My Boats: 1995 Sea Ray
Posts: 1
Default o2 sensors in marine manifolds.

Wheve can supply stainless one piece hi performance manifolds in all configurations Ford Chev etc with o2 sensors in the correct position to give correct readings.
julius750 is offline  
Reply With Quote
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
rssteiny
General Q & A
5
06-30-2008 07:49 PM
YOLO
General Boating Discussion
11
04-07-2008 06:07 PM
Rebel_Heart
General Q & A
4
08-13-2006 03:31 PM
JON242
General Q & A
2
07-07-2004 12:22 PM
MnFastBoat
General Q & A
1
07-13-2002 09:36 AM



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 On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 04:52 AM.


Copyright 2011 OffShoreOnly. All rights reserved.