EGT Importance
#1
Thread Starter
Join Date: Oct 2003
Location: Northern, PA, USA
Posts: 1,454
Likes: 0
Received 0 Likes
on
0 Posts
EGT Importance
Can someone please explain a little deeper about why its important to monitor your EGT? I did a search and came back w/ 5 results none of which answered this question. Thanks!
#2
Honda-Tech Member
Re: EGT Importance (RedTegLS)
egt's are directly affected by a/f ratio's.. using one can tell you whether you're running lean or rich (can't remember exactly what temp is ideal, I think it's 1600-1700 not sure tho).. some use this gauge as a means of tuning with an safc/vafc.. especially in the dsm world. dunno if this is what you're looking for.
#5
Honda-Tech Member
Join Date: Jan 2002
Location: Prescott Arizona
Posts: 4,426
Likes: 0
Received 0 Likes
on
0 Posts
Re: (glowing_turbo)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by glowing_turbo »</TD></TR><TR><TD CLASS="quote">the more rich the mixture, equals higher EGT's right? and the leaner the mix. = lower EGT's? or is that backwards?</TD></TR></TABLE>
You are backwards on that. Hot= LEAN, COLD= RICH.
Rob
You are backwards on that. Hot= LEAN, COLD= RICH.
Rob
#6
Honda-Tech Member
Join Date: Sep 2002
Location: Allentown, PA, USA
Posts: 6,663
Likes: 0
Received 0 Likes
on
0 Posts
Re: EGT Importance (IDriveAHonda)
Okay I thought high EGT's meant two things. One you are running lean and two your timing is pretty far advanced. Both of these would lead to hotter exhaust gas temps.
#7
Honda-Tech Member
i think i would rely more on an egt guage than an A/F guage, unless ur talkin about a wideband 02 setup........
i plan on just using an egt and an AF guage just to be safe until i can save enuf for a stand alone and dyno tuning........... (plus there is nowhere near my area that does dyno tuning unless i feel like takin a 3hr trip to NYC)
i plan on just using an egt and an AF guage just to be safe until i can save enuf for a stand alone and dyno tuning........... (plus there is nowhere near my area that does dyno tuning unless i feel like takin a 3hr trip to NYC)
Trending Topics
#9
Honda-Tech Member
Join Date: May 2001
Location: MSP
Posts: 2,477
Likes: 0
Received 0 Likes
on
0 Posts
Re: (1.8t)
To properly tune your car you need to monitor EGTS and a/f ratio. Once you go too lean the EGT will start reading lower, even though you are leaning out.
Best power will be aprox. 125 degrees(F) RICH of peak EGT.
Best Economy will be peak EGT.
Best power will be aprox. 125 degrees(F) RICH of peak EGT.
Best Economy will be peak EGT.
#10
Honda-Tech Member
Re: (MachAF)
I've always thought the higher the EGT the richer your mixture is..and the lower the EGT the leaner your mixture is......but in extreme cases a lean mixture can lead to a higher EGT....can anyone else leave more input...about this?
Also..other than an EGT...you could invest in a 02 wideband...pricey..but will definitely tell you if your rich or lean...
Khoi
Also..other than an EGT...you could invest in a 02 wideband...pricey..but will definitely tell you if your rich or lean...
Khoi
#11
Honda-Tech Member
Join Date: Mar 2002
Location: Portland, OR
Posts: 2,178
Likes: 0
Received 0 Likes
on
0 Posts
Re: (Sohc Driver)
The highest EGT you will see will be at stoichiometric (14.7:1 AFR) and it falls off on either side of this. Retarding the timing will also raise the EGT. So, you can really only use it to determine whether SOMETHING isn't right, you'll have to have an accurate (wideband) AFR monitor or timing logger to determine which is the cause.
#12
Honda-Tech Member
Join Date: Feb 2001
Location: Tejas
Posts: 6,351
Likes: 0
Received 0 Likes
on
0 Posts
Re: (ion_four)
High EGT = LEAN
Low EGT = RICH.
Used it a a simple glance when driving to indicates wether you're leaner or richer than USUAL, but not as a tuning device. If you can use it as a tuning device, great..but I would never use it. I used it to reference wether my valves are melting or not based on the temp.
stan
Low EGT = RICH.
Used it a a simple glance when driving to indicates wether you're leaner or richer than USUAL, but not as a tuning device. If you can use it as a tuning device, great..but I would never use it. I used it to reference wether my valves are melting or not based on the temp.
stan
#13
Honda-Tech Member
Re: (Flamenco-T)
this has been mentioned before but.....
you could possibly be running completely rich or not enough timing, causing the engine to pre-ignite and also cause high egt's.
a wide band is the best way to know how rich/lean/whatever your car is running.
you could possibly be running completely rich or not enough timing, causing the engine to pre-ignite and also cause high egt's.
a wide band is the best way to know how rich/lean/whatever your car is running.
#14
i was too lazy to read all of the post..but EGT serves as telling whether you are rich or lean. But also tells you if you've been boosting too much(this is what ive been told atleast) and also will be a great warning on any engine problems if your EGT temp suddenly changes. good way to keep your pistons from melting. EGT is a great tool but kind of pricey. But worth the investment.
#15
Honda-Tech Member
Re: (bigwig)
I say..it doesn't matter if you know if its how hot or how cold it is on the EGT...just as long as its in the correct range...lol..if its out of range...then pull that beast over...period...........well..ok maybe not pull over but atleast to know something is up and to be careful LOL
Khoi
Khoi
Thread
Thread Starter
Forum
Replies
Last Post
IggDawg
Honda CRX / EF Civic (1988 - 1991)
9
02-08-2004 04:06 PM
125, 2200, civic, cr, egt, exhaust, gas, high, honda, importace, importance, recomeneded, temp, temperature, temperatures