Here I am driving the G/f back to texas and while cruising at 80mph 3500rpm's my EGT's are 1400. while cruising at 80 for hours it affects my engine temp obviously. No idea why. I have my scanner so i can check my fuel trims to see where i am at. Didnt bring my fuel pressure gauge and cant find a parts store that has one to thread into my reg. I went and picked up a cooler set of ngk spark plugs. the plugs that were in the car look good, tan tips on the electrode. I fail to believe the coolant sensor and EGT probe are bad at the same time.

I am limited on what tools i have so any idea would be great.

I have a 1:1 aero Reg with the 12:1Fmu setup for fuel.....had to go this route to drive the car while MS is on the way.

Terry

what dids the fuel trims look like?

as he stated^..

But what makes you think that 1400 is high?

If I rem. correctly our stock motors have a cruising egt of ~1500. Id say your golden. If you regular temps where a little high, you prob getting massive heat soak to the rad. Maybe invest in some thermal wrap and an oil cooler. But those egts look fine.

Nick
97RS


THX KAPTAIN MYKE FOR HOSTING! www.kaptainmyke.com

1500* cruising egt's? hmmm...i wouldnt fuck around with that, lol. i like melting shit and all because im a pyro, but not my pistons. :+

1500-1600 at WOT yea...but part throttle you should see like 1300 while cruising at 80

Trims were lean. ecu was +13 on both trims while daily driving. uped the pressure by 1/2 turn and i am zero'd out. We'll see how it does on the way to dinner. At WOT i am creeping up to 1600 by appx 4000. I cant hold a long pull out because i dont feel like melting shit this far from home. I cant say i took reading on a stock n/a motor but 1500 is really high. I agree with heat soak but i have everything ceramic coated, i never had any probs with my 96 talon when all the parts were on that car so something is deffinitly off here.

If i recall i set the fuel pressure at 50lbs a month back...there is no reason to be lean here.......i am worried the reg is crapping out. It chatters like crazy which it always did when i got it from another member then it quiets up and is intermittant.

I cant believe i brought my scanner but no fuel pressure tester....never fully prepared. not to mention i am buying tools at napa that i have at home...what a waste. Learning lesson i guess.

Here is my route: 35n from college station to 44n to OK city. 69n to 40 tulsa. 40 to st louis to 55n. Anyone live along the way?

Terry

yea try and get those trims as close to 0 as you can. you have an a/f gauge or a turbo timer you can see the voltage with when cruising? things like that have anyways helped me in the fuel department. sounds like you may have been just slightly lean but the ecu had your back.

http://forums.2gnt.com/dcboard.php?az=show_topic&forum=8&topic_id=73608&mesg_id=73608&listing_type=search

Found it!
I knew I remember reading about it somewhere.

"I think this is pretty normal. My car hits 1450-1500 degrees just crusing on the highway at 75-80 mph. if im going up a hill, over 1600 degrees in partial throttle. "



Nick
97RS


THX KAPTAIN MYKE FOR HOSTING! www.kaptainmyke.com

1600+ :wary....

im melllltingggg

thats to hot man

I will hit 1600 when partial throttle and up hill. 75-80 MPH I am usually around 1350-1400. Pretty normal for me.

1400 is perfectly normal for 70-80 mph..I found out also, when I did the EGR block off, my EGT's went down at cruising by 30-50 degrees.

Originally posted by RxR_Eclipse
I will hit 1600 when partial throttle and up hill. 75-80 MPH I am usually around 1350-1400. Pretty normal for me.

hey, those are my wheels...

and yea i get up near 1400+ alot
sometimes hitting 1600 ish... i just floor it in 5th so it boosts enough that my sfmu dumps the fuel and i can watch the egt's start falling... buy my motor is shit so what ever

Originally posted by Collente
http://forums.2gnt.com/dcboard.php?az=show_topic&forum=8&topic_id=73608&mesg_id=73608&listing_type=search Found it! I knew I remember reading about it somewhere. "I think this is pretty normal. My car hits 1450-1500 degrees just crusing on the highway at 75-80 mph. if im going up a hill, over 1600 degrees in partial throttle. " Nick 97RS THX KAPTAIN MYKE FOR HOSTING! www.kaptainmyke.com

This is about what my car runs too. My egts will get to 1600 or even a little more if I let it. This happens while driving in vacumm. Under full throttle the egts will drop to 1400 and stay there. I also wonder if where the temp probe is would make it read higher than if it was in the #4 exhaust runner.

I pull and check the spark plugs about every 500 miles and they look perfect and the compression has gotten better also (180 psi across). I have tried running higher fuel pressure and larger injectors, but there was not much change at all in the egts at cruising speeds.

Does anyone know what egt a N/A engine would run at cruising speeds?

Here is a picture of where my temp probe is:

Well straightening out the trims appears to have solved my issues, wont know till tomarro won the way home since there was a lovely hail storm in southern texas.....(quarter size hail)

Egts are lower and low end has improved. Now before when under full throttle my EGT's dont drop they continue to climb. Runner 1 will be the hottest. i pulled the plugs and plugs went from nice and tan to closer to white from runner 4 to runner 1. leanness on runner 1 is obvious but some people still claim #4 is. When i get closer to home late tomarrow night i will try and get a few 5th gear pulls to 6000 rpms. I think i am going to order another fuel reg from summit just in case and see what fuel pressure i am at.

Terry

I lost to WRX today because of that shit. To top it off, it shouldn't have climbed that fast since I was only boosting 11psi.

Originally posted by turbo8u
1500* cruising egt's? hmmm...i wouldnt fuck around with that, lol. i like melting shit and all because im a pyro, but not my pistons. :+ 1500-1600 at WOT yea...but part throttle you should see like 1300 while cruising at 80

thats not completely true and an invalid statement in my opinion. every car is different.

for the record, before my 3:55 tranny, i was at around 1450 egt cruising at 80mph.. if i would stop on the gas at all around 80mph, the egt would go cooler because of fuel.

1400 to 1500 egt is normal.

now with the 3:55 tranny. i sit at about 1300 at 80mph

Originally posted by turbo8u ...but part throttle you should see like 1300 while cruising at 80

Originally posted by siueclipse
thats not completely true and an invalid statement in my opinion. every car is different.

Originally posted by siueclipse
i sit at about 1300 at 80mph

so its an invalid statement thats true in your case as well as mine, that would make it valid now, wouldnt it?

i hit 1300ish at 75 to 80 cruising and not in boost also

Well once i zero'd my trims out i am at 1300 cruising 80mph. if accellerating to maintain 80mph like going up hill i am at 1400. When boosting i sit around 1500. I still havent checked what pressure i am at and really dont care since my short trims are 0 or -1. I am going to agree with turby on this, 1590 is documented as a melting degree for boosted applications. But to each his own!

My coolant temps are more than likely heatsoak but not as bad as they were when i was lean plus i think i might have a bad sensor, gets hot way too quick.



Terry

Originally posted by turbo8u

Originally posted by turbo8u ...but part throttle you should see like 1300 while cruising at 80

Originally posted by siueclipse thats not completely true and an invalid statement in my opinion. every car is different.

Originally posted by siueclipse i sit at about 1300 at 80mph

so its an invalid statement thats true in your case as well as mine, that would make it valid now, wouldnt it?

he doesn't have the 3:55 tranny ace. ;)

Originally posted by siueclipse

Originally posted by turbo8u

Originally posted by turbo8u ...but part throttle you should see like 1300 while cruising at 80

Originally posted by siueclipse thats not completely true and an invalid statement in my opinion. every car is different.

Originally posted by siueclipse i sit at about 1300 at 80mph

so its an invalid statement thats true in your case as well as mine, that would make it valid now, wouldnt it?

he doesn't have the 3:55 tranny ace. ;)

who's "he" and when did i talk about him?

because i didnt, ace. i was talking about you and me. (ie "thats true in your case as well as mine")

Originally posted by Star Turbo Taloni think i might have a bad sensor, gets hot way too quick.

you have a howell 160 in? throw in some water wetter and run like 60/40 water to coolant, and make sure its full. thats what i do and my coolant temps just chill.

yea i need to get the 160 therm and when i am at it i will run the water wetter, i always use it in my superbee and will with this as well. I plan to take care of that once i get the car back from PDR repair on tuesday.

Terry

Originally posted by turbo8u
who's "he" and when did i talk about him? because i didnt, ace. i was talking about you and me. (ie "thats true in your case as well as mine")

Read his post again Turby...

Originally posted by siueclipse
for the record, before my 3:55 tranny, i was at around 1450 egt cruising at 80mph.. if i would stop on the gas at all around 80mph, the egt would go cooler because of fuel. 1400 to 1500 egt is normal.

now with the 3:55 tranny. i sit at about 1300 at 80mph