Running at idle its like at 800 or so, but on the freeway going 60mph in 5th gear taching at 4K rpm's its reading like 1600-1700 - NOT in boost.
That normal ?
EDIT: lol k i am a real moron, I took Jake aka JDM B-Series around last night and it didn't get above 1300 and that was after 6psi hitting 8200rpm. I even went cruising on the freeway and 1350 was about the highest we saw...........me = I guess i wasn't really paying attention.


Modified by hulkhb at 4:56 PM 9/28/2003

 

sounds too high too me.. between 1100 and 1300 is good for that area

 

never go above 1500 degrees F higher than that then ur pushing it........on highway cruzing i get about 1100-1200.. then when i floor it through the gears i get up to 1400-1450

 

im guessing ur gauge might be off....... cause u would of fried some **** getting up 1700..


most dsm's dont even go above 1600......

 

I am sure this places a roll too...........The placement of the probe ? cause its like 1.5" away from runner 1.........i know i know , it was already tapped.

 

mine is like 4-6 inches away form the head in runner 1.. that may very well be the problem .. its too close the the head...

 

thats what i was thinking, what is the rule of thumb on runng rich/lean ?
lean = lower temps
rich = high temps
or vise versa ?
thanks

 

Timing plays a big roll in EGT temp also!

 

2" from the head on the 3rd runner i get 600-700 crusing and highest 800c at WOT full boost 9psi

 

If your timing is retarded more than it should be, then you will get high egt temps. I was always told that the probe should be taped into the #3 runner. GSRev has his taped into his head and he gets nomal readings.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbo Si &raquo;</TD></TR><TR><TD CLASS="quote"> GSRev has his taped into his head and he gets nomal readings.</TD></TR></TABLE>
I would love to see a pic of how he tapped it into the head. Ive never seen that before.

 

Mine is in the DP about 1-2" from the turbo. I get about 1100f on the highway at 70mph.

 

This has been discussed before...search it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hulkhb &raquo;</TD></TR><TR><TD CLASS="quote">thats what i was thinking, what is the rule of thumb on runng rich/lean ?
lean = lower temps
rich = high temps
or vise versa ?
thanks
</TD></TR></TABLE>

i don't know...whenever i run lean my egt gauge shoots up sky rocketing...but when i run rich my egt gauge is really low. maybe it's different for me since my probe in on my down pipe?

 

normally rich = low temps and lean = high temps but you can get high egt readings with an overly rich mixture if the unburnt fuel gets ignited near the sensor.

 

highest egt's come at 14.7:1 air fuel ratio. richer and the extra fuel cools the exhaust and any leaner and the combustion doesn't reach high temps due to lack of fuel. http://www.sdsefi.com/techegt.htm

https://honda-tech.com/zerothread?id=248965

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by greekspeed &raquo;</TD></TR><TR><TD CLASS="quote">mine is like 4-6 inches away form the head in runner 1.. that may very well be the problem .. its too close the the head...</TD></TR></TABLE>

Actually it's probably too far from the head. It should be on #3 runner, and distance from the head is half the diameter of your primary runner.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by accordfreak &raquo;</TD></TR><TR><TD CLASS="quote">2" from the head on the 3rd runner i get 600-700 crusing and highest 800c at WOT full boost 9psi</TD></TR></TABLE>

that's about what i see at cruising. i haven't gotten any hotter that 750c at WOT

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Maxime &raquo;</TD></TR><TR><TD CLASS="quote">Mine is in the DP about 1-2" from the turbo. I get about 1100f on the highway at 70mph.</TD></TR></TABLE>

me too

 

Is anyone using the Apex'i EL EGT gauge, the sensor for it is extremely long and I can't figure out how they expect you to mount it in a runner.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beta13 &raquo;</TD></TR><TR><TD CLASS="quote">Is anyone using the Apex'i EL EGT gauge, the sensor for it is extremely long and I can't figure out how they expect you to mount it in a runner.</TD></TR></TABLE>

i just ordered my sensor/probe for the apexi egt, ive heard its kinda long to so thats why im gona get in put in the downpipe. can you post a pic of yours?

 

I also use the Apex EL egt. The probe is super long. I had to mock up a couple of the fittings so that it spaced it further out. I dont have any pics unfortunately. You could always have a bung welded to a short tube then welded to the manifold.....or even have the tube welded in on an angle so the probe will sit at an angle inside the runner.
BTW #3 runner as close to the head as possible is where you want your probe at.

 

Cursing on the highway I would be around 1300 to 1400 deg at 4000 to 4500 rpm I put the LS 5th gear in my car and besides it being at 3000rpm at 70 my egt are cooler around 1200 to 1300 deg.