EGT temp. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Loofee95SE · 10-01-2005, 11:31 AM

simple question: How hot does ur egt guagr read @ cruising, 5th gear, around 4k rpm???

my Apex-i egt read about 950 degree when i'm cruising @ about 80 mph on 5th gear at around 4k rpm. is that too high?( on stock exhaust system).

post ur egt temp. C

***S14DB*** · 10-01-2005, 12:22 PM

This F or C?

JohnC · 10-02-2005, 06:10 AM

Quote:

Originally Posted by S14DB

This F or C?

I hope that is in F, otherwise I would stop driving
until I know what is wrong.

Loofee95SE · 10-02-2005, 06:48 PM

it's "C" i tap teh sensor @ the collector on the manifold before the turbo. and as i stated ealier my exhaust is totally stock, stock 02 housing, stock DP.
what should be the normal reading??

PROJECTRB240SX · 10-02-2005, 07:03 PM

950 degrees celcius is 1742 degrees fahrenheit.... basically enough to start melting low grade steel.

you might want to make sure its celcius, if its actually fahrenheit thats not too bad.

Loofee95SE · 10-02-2005, 08:36 PM

well, I figure I'd do myself a favor, and check my timing, sure enough I was about 15 deg off! i was @ TDC!!, set it to 15 BTDC, and went out for a drive. my EGT is now not over 800c degree. phew...
Now would somebody want to explain to me, why is it. that I was running lean when my timming was retarded to TDC, and better with more timming??? will somebody enlighten me on this fact?? thanks in advance. C
and o yes, my car feels soo much better now.

JohnC · 10-03-2005, 02:15 AM

Fisrt,
good to know you went and checked your timing and found the problem
before you turned the engine into metal soup with extra pulp.
I kept my eye on the gauge last night just to see what cruising temps are
like and at 85mph I was running at 720C and at WOT up to 120 never went over
825C. It was kind of cool last night so I assume I would see temps at around
840 - 850C in the afternoon. I have the sensor mounted just like you have it
just b4 the turbo.
The explanation is simple, you now have the timing the way it should be.

John

TEALSQUEAL · 10-03-2005, 04:34 AM

why didn't you all tap the manifold on the leanest cylinder?

***S14DB*** · 10-03-2005, 04:42 AM

Quote:

Originally Posted by TEALSQUEAL

why didn't you all tap the manifold on the leanest cylinder?

Cause it's the hottest.

PROJECTRB240SX · 10-03-2005, 06:37 AM

He Asked Why Didn't They Tap It For The Leanest Cylinder.... Which Would Make Sense Because It Would Be The Most Tall-tell Sign Of A Problem, But At The Collector Is Good Enough For A Proper Reading.

Pstl_pete · 10-03-2005, 02:04 PM

I have somewhat the same problem. My EGTs hit 1650 F at times in 5th gear (round 140km/h) under slight load, they however around the 1600 F marker. My timing is set to 17 deg though so I really dont know what my problem is.

10-01-2005, 11:31 AM	#1
Loofee95SE Zilvia Junkie Join Date: Mar 2002 Location: Gadsden, AL Posts: 357 Trader Rating: (0) Feedback Score: 0 reviews	EGT temp. simple question: How hot does ur egt guagr read @ cruising, 5th gear, around 4k rpm??? my Apex-i egt read about 950 degree when i'm cruising @ about 80 mph on 5th gear at around 4k rpm. is that too high?( on stock exhaust system). post ur egt temp. C __________________ I need more Boost!

10-01-2005, 12:22 PM	#2
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	This F or C? __________________ Comments should be taken as Opinions not as Statements of Fact

10-02-2005, 06:48 PM	#4
Loofee95SE Zilvia Junkie Join Date: Mar 2002 Location: Gadsden, AL Posts: 357 Trader Rating: (0) Feedback Score: 0 reviews	it's "C" i tap teh sensor @ the collector on the manifold before the turbo. and as i stated ealier my exhaust is totally stock, stock 02 housing, stock DP. what should be the normal reading?? __________________ I need more Boost!

10-02-2005, 07:03 PM	#5
PROJECTRB240SX Zilvia Junkie Join Date: Dec 2003 Location: GILBERT, AZ Posts: 304 Trader Rating: (0) Feedback Score: 0 reviews	950 degrees celcius is 1742 degrees fahrenheit.... basically enough to start melting low grade steel. you might want to make sure its celcius, if its actually fahrenheit thats not too bad. __________________ IF I AM TYPING IN CAPS (LIKE NOW) I AM SORRY BECAUSE I AM AT WORK (DATA ENTRY) AND I HAVE NO CAPS LOCK BUTTON AND NO WAY TO CHANGE MY UPPER CASE LETTERING. SORRY!

10-02-2005, 08:36 PM	#6
Loofee95SE Zilvia Junkie Join Date: Mar 2002 Location: Gadsden, AL Posts: 357 Trader Rating: (0) Feedback Score: 0 reviews	well, I figure I'd do myself a favor, and check my timing, sure enough I was about 15 deg off! i was @ TDC!!, set it to 15 BTDC, and went out for a drive. my EGT is now not over 800c degree. phew... Now would somebody want to explain to me, why is it. that I was running lean when my timming was retarded to TDC, and better with more timming??? will somebody enlighten me on this fact?? thanks in advance. C and o yes, my car feels soo much better now. __________________ I need more Boost!

10-03-2005, 02:15 AM	#7
JohnC Zilvia Junkie Join Date: Mar 2005 Location: Israel Posts: 335 Trader Rating: (0) Rides Gallery: JohnC Feedback Score: 0 reviews	Fisrt, good to know you went and checked your timing and found the problem before you turned the engine into metal soup with extra pulp. I kept my eye on the gauge last night just to see what cruising temps are like and at 85mph I was running at 720C and at WOT up to 120 never went over 825C. It was kind of cool last night so I assume I would see temps at around 840 - 850C in the afternoon. I have the sensor mounted just like you have it just b4 the turbo. The explanation is simple, you now have the timing the way it should be. John

10-03-2005, 04:34 AM	#8
TEALSQUEAL Zilvia Junkie Join Date: Apr 2004 Location: louisville, ky Posts: 482 Trader Rating: (6) Feedback Score: 6 reviews	why didn't you all tap the manifold on the leanest cylinder?

10-03-2005, 06:37 AM	#10
PROJECTRB240SX Zilvia Junkie Join Date: Dec 2003 Location: GILBERT, AZ Posts: 304 Trader Rating: (0) Feedback Score: 0 reviews	He Asked Why Didn't They Tap It For The Leanest Cylinder.... Which Would Make Sense Because It Would Be The Most Tall-tell Sign Of A Problem, But At The Collector Is Good Enough For A Proper Reading. __________________ IF I AM TYPING IN CAPS (LIKE NOW) I AM SORRY BECAUSE I AM AT WORK (DATA ENTRY) AND I HAVE NO CAPS LOCK BUTTON AND NO WAY TO CHANGE MY UPPER CASE LETTERING. SORRY!

10-03-2005, 02:04 PM	#11
Pstl_pete Zilvia Junkie Join Date: Nov 2004 Location: LA,CA & Windsor, ON Posts: 443 Trader Rating: (4) Feedback Score: 4 reviews	I have somewhat the same problem. My EGTs hit 1650 F at times in 5th gear (round 140km/h) under slight load, they however around the 1600 F marker. My timing is set to 17 deg though so I really dont know what my problem is. __________________ S14 - New SR Project http://www.speed.academy