EGT: #3 runner or in down pipe ?
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Re: (BlackCRX)
the "best" place for an EGT sensor IMO is within a few inches from the head flange period. anyone that is interested in monitoring gas temps from the engine do it as soon as the gas comes out of the motor.
"best" includes mounting a sensor in every runner. but most of us use one EGT and since cyl# 3 is usually the hottest on our honda motors, that would the popular choice.
remember that your word "best" is relative to what your trying to accomplish.
"best" includes mounting a sensor in every runner. but most of us use one EGT and since cyl# 3 is usually the hottest on our honda motors, that would the popular choice.
remember that your word "best" is relative to what your trying to accomplish.
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From: Waterloo, Ontario, Canada
Funny, just mounted mine 4 days ago, in the DP, 1" from the turbo.
There's arguments both ways. I agree with the baseline argument, and law of averages. What if you have a failure in cylinders 1, 2, or 4? You'd be SOL with the bung in #3 runner.
My logic: ALL runners, @ the collector, or DP.
As for responsiveness, I haven't witnessed the opposite setup (mani mounted EGT), but the gauge moves fairly quick in the DP scenario.
Good luck with your choice.
There's arguments both ways. I agree with the baseline argument, and law of averages. What if you have a failure in cylinders 1, 2, or 4? You'd be SOL with the bung in #3 runner.
My logic: ALL runners, @ the collector, or DP.
As for responsiveness, I haven't witnessed the opposite setup (mani mounted EGT), but the gauge moves fairly quick in the DP scenario.
Good luck with your choice.
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From: SC
Re: (juka)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by juka »</TD></TR><TR><TD CLASS="quote">Funny, just mounted mine 4 days ago, in the DP, 1" from the turbo.
There's arguments both ways. I agree with the baseline argument, and law of averages. What if you have a failure in cylinders 1, 2, or 4? You'd be SOL with the bung in #3 runner.
My logic: ALL runners, @ the collector, or DP.
As for responsiveness, I haven't witnessed the opposite setup (mani mounted EGT), but the gauge moves fairly quick in the DP scenario.
Good luck with your choice.</TD></TR></TABLE>
that doesnt make any sense. If you have it on teh collector or DP you wont notice a dramatic change in temperatures. If you really want to know if you have a cylinder failure, you can 1) learn how a motor works and how it acts when one cylinder is not firing or 2) put an EGT gauge on each runner.
That is the ONLY solution to this "delima". The best place to put it is on #3 b/c of the lean conditions that it sees. Any spot after teh turbo will read much lower in temps than would be useable.
There's arguments both ways. I agree with the baseline argument, and law of averages. What if you have a failure in cylinders 1, 2, or 4? You'd be SOL with the bung in #3 runner.
My logic: ALL runners, @ the collector, or DP.
As for responsiveness, I haven't witnessed the opposite setup (mani mounted EGT), but the gauge moves fairly quick in the DP scenario.
Good luck with your choice.</TD></TR></TABLE>
that doesnt make any sense. If you have it on teh collector or DP you wont notice a dramatic change in temperatures. If you really want to know if you have a cylinder failure, you can 1) learn how a motor works and how it acts when one cylinder is not firing or 2) put an EGT gauge on each runner.
That is the ONLY solution to this "delima". The best place to put it is on #3 b/c of the lean conditions that it sees. Any spot after teh turbo will read much lower in temps than would be useable.
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Re: (tgreaves)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tgreaves »</TD></TR><TR><TD CLASS="quote">
Cylinder #3 gets the most direct flow of air so that will be the leanest cylinder in the engine, so placing the EGT on cylinder #3 will show you the hottest reading of all the cylinders.. </TD></TR></TABLE>
Good info
The statement
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlackCRX »</TD></TR><TR><TD CLASS="quote">
cuz once all 4 runners join the temps are avg;d out
so even if the readings are good #3 could still be dangeroiusly hot</TD></TR></TABLE>
is a strong argument for placement in the runner, and the statement
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by juka »</TD></TR><TR><TD CLASS="quote">What if you have a failure in cylinders 1, 2, or 4? You'd be SOL with the bung in #3 runner.</TD></TR></TABLE>
is a strong argument for placement in the DP.
So which of these statements are correct? Or maybe in this case, the most correct .....
Cylinder #3 gets the most direct flow of air so that will be the leanest cylinder in the engine, so placing the EGT on cylinder #3 will show you the hottest reading of all the cylinders.. </TD></TR></TABLE>
Good info
The statement
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlackCRX »</TD></TR><TR><TD CLASS="quote">
cuz once all 4 runners join the temps are avg;d out
so even if the readings are good #3 could still be dangeroiusly hot</TD></TR></TABLE>
is a strong argument for placement in the runner, and the statement
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by juka »</TD></TR><TR><TD CLASS="quote">What if you have a failure in cylinders 1, 2, or 4? You'd be SOL with the bung in #3 runner.</TD></TR></TABLE>
is a strong argument for placement in the DP.
So which of these statements are correct? Or maybe in this case, the most correct .....
Re: (abmerop18)
for turbo guys. i put mines on the wastegate elbow because u only really need to watch EGT's when your boosting. When your in Vacumm you really dont need to watch egt readings.
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Re:
Always tap it at cylinder #3... You don't need to average out the reading for EGT's... That's what the wideband O2 is for. If any other cylinder is starving for fuel, it will show up on the AF readings.
With all cylinders running properly, cylinder #3 tend to run the hottest, with the cylinder having the most direct airflow and with it being between two other cylinders (which gets lesser coolant surface area).
Putting it at the wastegate elbow doesn't work out well. What if you are close to the turbo's efficiency and there is barely any exhaust going through the WG? If you run high boost, sometimes the wastegate is almost shut which leaves you to barely any exhaust flow = wrong readings!
With all cylinders running properly, cylinder #3 tend to run the hottest, with the cylinder having the most direct airflow and with it being between two other cylinders (which gets lesser coolant surface area).
Putting it at the wastegate elbow doesn't work out well. What if you are close to the turbo's efficiency and there is barely any exhaust going through the WG? If you run high boost, sometimes the wastegate is almost shut which leaves you to barely any exhaust flow = wrong readings!
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Re: Re: (Tony the Tiger)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tony the Tiger »</TD></TR><TR><TD CLASS="quote">Always tap it at cylinder #3... You don't need to average out the reading for EGT's... <U>That's what the wideband O2 is for. If any other cylinder is starving for fuel, it will show up on the AF readings.</U>
With all cylinders running properly, cylinder #3 tend to run the hottest, with the cylinder having the most direct airflow and with it being between two other cylinders (which gets lesser coolant surface area).
Putting it at the wastegate elbow doesn't work out well. What if you are close to the turbo's efficiency and there is barely any exhaust going through the WG? If you run high boost, sometimes the wastegate is almost shut which leaves you to barely any exhaust flow = wrong readings!</TD></TR></TABLE>
I am just having it tuned with a wideband .... but only have the EGT to keep an eye on for problems the rest of the time ....
With all cylinders running properly, cylinder #3 tend to run the hottest, with the cylinder having the most direct airflow and with it being between two other cylinders (which gets lesser coolant surface area).
Putting it at the wastegate elbow doesn't work out well. What if you are close to the turbo's efficiency and there is barely any exhaust going through the WG? If you run high boost, sometimes the wastegate is almost shut which leaves you to barely any exhaust flow = wrong readings!</TD></TR></TABLE>
I am just having it tuned with a wideband .... but only have the EGT to keep an eye on for problems the rest of the time ....
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Re: Re: (jfoster)
Number 3 is the most likely to crack a ring land or melt a piston, it runs the hottest, thats is the cylinder I choose to monitor. Readings are considerably cooler after the turbo. In reality my egts stayed much the same most of the time, with race gas a little cooler..
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Re: (integlspwr2k)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by integlspwr2k »</TD></TR><TR><TD CLASS="quote">for turbo guys. i put mines on the wastegate elbow because u only really need to watch EGT's when your boosting. When your in Vacumm you really dont need to watch egt readings.</TD></TR></TABLE>
Why wouldn't you need to watch temps out of boost. A better way to say it would be that you watch it less out of boost, but you still need to keep an eye out.
As stated 20times cylinder 3 1-2inches from the head is best. There is also the issue of pressure in the manifold that the downpipe doesn't see
Why wouldn't you need to watch temps out of boost. A better way to say it would be that you watch it less out of boost, but you still need to keep an eye out.
As stated 20times cylinder 3 1-2inches from the head is best. There is also the issue of pressure in the manifold that the downpipe doesn't see
Re: Re: (Tony the Tiger)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tony the Tiger »</TD></TR><TR><TD CLASS="quote">Always tap it at cylinder #3... You don't need to average out the reading for EGT's... That's what the wideband O2 is for. If any other cylinder is starving for fuel, it will show up on the AF readings.
With all cylinders running properly, cylinder #3 tend to run the hottest, with the cylinder having the most direct airflow and with it being between two other cylinders (which gets lesser coolant surface area).
Putting it at the wastegate elbow doesn't work out well. What if you are close to the turbo's efficiency and there is barely any exhaust going through the WG? If you run high boost, sometimes the wastegate is almost shut which leaves you to barely any exhaust flow = wrong readings!</TD></TR></TABLE>
if thats the case, aren't people worried about egt probe's melting because its too hot on runner number 3?
Ive seen it many of times where probe melts and shoots into your turbo.
With all cylinders running properly, cylinder #3 tend to run the hottest, with the cylinder having the most direct airflow and with it being between two other cylinders (which gets lesser coolant surface area).
Putting it at the wastegate elbow doesn't work out well. What if you are close to the turbo's efficiency and there is barely any exhaust going through the WG? If you run high boost, sometimes the wastegate is almost shut which leaves you to barely any exhaust flow = wrong readings!</TD></TR></TABLE>
if thats the case, aren't people worried about egt probe's melting because its too hot on runner number 3?
Ive seen it many of times where probe melts and shoots into your turbo.
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Re: Re: (integlspwr2k)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by integlspwr2k »</TD></TR><TR><TD CLASS="quote">
if thats the case, aren't people worried about egt probe's melting because its too hot on runner number 3?
Ive seen it many of times where probe melts and shoots into your turbo.</TD></TR></TABLE>
Holy **** can that really happen ??????
if thats the case, aren't people worried about egt probe's melting because its too hot on runner number 3?
Ive seen it many of times where probe melts and shoots into your turbo.</TD></TR></TABLE>
Holy **** can that really happen ??????
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Re: Re: (jfoster)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jfoster »</TD></TR><TR><TD CLASS="quote">
Holy **** can that really happen ??????</TD></TR></TABLE>
Its happened, its not that common. You should have the motor shut down way before the probe melts, cause if its getting that hot you've already got a problem....And this is another reason why we buy quality parts
Holy **** can that really happen ??????</TD></TR></TABLE>
Its happened, its not that common. You should have the motor shut down way before the probe melts, cause if its getting that hot you've already got a problem....And this is another reason why we buy quality parts
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From: Toronto, ON, Canada
Re: Re: (integlspwr2k)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by integlspwr2k »</TD></TR><TR><TD CLASS="quote">
if thats the case, aren't people worried about egt probe's melting because its too hot on runner number 3?
Ive seen it many of times where probe melts and shoots into your turbo.</TD></TR></TABLE>
If the probe melts, maybe it's time to retune the car...lol
if thats the case, aren't people worried about egt probe's melting because its too hot on runner number 3?
Ive seen it many of times where probe melts and shoots into your turbo.</TD></TR></TABLE>
If the probe melts, maybe it's time to retune the car...lol
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