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.
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No one runs a EGT???
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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?
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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.
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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. |
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.
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But what is the maximum temp you feel comfortable with?
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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. |
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 . |
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.
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