High EGT problem
06-02-2006, 09:07 AM
#1
High EGT problem
OK after getting my A/F to 11.5 to 11.7 the egts are going pass 1400. 3rd gear pulls the EGTs go pass 1400. NOw ive synced the distrutor to the ecu. Ive run from 7deg to 20 deg of timing and the egts are still out to lunch. Im thinking maybe running back 24deg of timing.
Can anyone shed some light?
Can anyone shed some light?
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06-02-2006, 02:39 PM
#8
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Re: High EGT problem (JDMCRX)
what kind of manifold are you using and where is the EGT probe located?
mine's in a log manifold, 2" from the head but that makes it get the other cylinders' heat also so I see pretty high EGTs even under cruise
mine's in a log manifold, 2" from the head but that makes it get the other cylinders' heat also so I see pretty high EGTs even under cruise
06-02-2006, 02:45 PM
#9
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Re: High EGT problem (JDMCRX)
i also get ridiculously high EGT's with low or high boost. i've seen 1400-1500deg plenty of times. and even when cruising in 5'th gear on the highway it averages around 1100-1200deg.
but I'm pretty sure 90% of my high EGT problems are due to my restrictive exhaust system.
how is your exhaust setup?
but I'm pretty sure 90% of my high EGT problems are due to my restrictive exhaust system.
how is your exhaust setup?
08-02-2006, 09:28 PM
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Re: High EGT problem (JDMCRX)
im in the same boat..
with a stock ecu and stock motor, exhaust and everything, i got high EGTs with the same autometer gauge.
1.3-1.4k degrees cruising down the highway at ~3k rpm!
now on boost, my EGT gauge is pegged at 1600* at the end of third gear.
the motor is a d15b2 bottom end with a d16a6 head. hf mani and evo3 big 16g turbo. 12.5 psi and an open 2.5" DP.
:edit: dsm450s and a walboro 190 pump.
im running solid AFRs, 11.5-12:1 with ~15* timing on Turboedit. ive tried advancing and retarding timing, no noticable difference. im about to run some colder plugs, i got 7s in there now. ill let you know if there is a difference. im hoping i just have a hot motor but a pegged 1.6k has to be too hot
what kind plugs do you run?
Modified by bch5428 at 1:34 PM 8/3/2006
with a stock ecu and stock motor, exhaust and everything, i got high EGTs with the same autometer gauge.
1.3-1.4k degrees cruising down the highway at ~3k rpm!
now on boost, my EGT gauge is pegged at 1600* at the end of third gear.
the motor is a d15b2 bottom end with a d16a6 head. hf mani and evo3 big 16g turbo. 12.5 psi and an open 2.5" DP.
:edit: dsm450s and a walboro 190 pump.
im running solid AFRs, 11.5-12:1 with ~15* timing on Turboedit. ive tried advancing and retarding timing, no noticable difference. im about to run some colder plugs, i got 7s in there now. ill let you know if there is a difference. im hoping i just have a hot motor but a pegged 1.6k has to be too hot
what kind plugs do you run?
Modified by bch5428 at 1:34 PM 8/3/2006
08-03-2006, 01:12 PM
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Re: (bch5428)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bch5428 »</TD></TR><TR><TD CLASS="quote">i just really hope these new colder plugs help.</TD></TR></TABLE>colder plus might help but water injection will knock it down at least 200 degrees. plus clean the buildup on your pistons.
08-03-2006, 01:19 PM
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Re: (Boostage)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Boostage »</TD></TR><TR><TD CLASS="quote">colder plus might help but water injection will knock it down at least 200 degrees. plus clean the buildup on your pistons.</TD></TR></TABLE> 
08-05-2006, 06:24 PM
#18
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i just went from 7s to 8s. i havnt had time to try and to any WOT pulls and some real tuning, but at idle and highway cruising my EGTS are down about 175 degrees. id really like to get into water injection, but i gotta learn how to tune first!
08-06-2006, 09:35 PM
#20
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Re: (JDMCRX)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMCRX »</TD></TR><TR><TD CLASS="quote">Well guys while ago i put the timing back to 23 deg at 8-12psi all the way to 8500 rpm and my egts are now at about 1400.
Cars pulling realy strong and the A/F are 10.7-11.5</TD></TR></TABLE>
your at 23 deg with a y8 at 8-12psi? Are you using race gas?
Cars pulling realy strong and the A/F are 10.7-11.5</TD></TR></TABLE>
your at 23 deg with a y8 at 8-12psi? Are you using race gas?
08-07-2006, 05:25 AM
#21
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Re: High EGT problem (JDMCRX)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMCRX »</TD></TR><TR><TD CLASS="quote">My exhaust is 2 1/4" all the way threw no cat straight pipe. My egt probe is in the wastegate hole on the 5 bolt turbo housing.
josh</TD></TR></TABLE>
It's normal for where your probe is placed.
Myself and another buddy has it placed in the same position, and have EGT temps right where yours are, if not slightly higher. I have had my car tuned twice by different tuners...same result
There's actually a calculation to determine your actual EGT's based on where you put it, and distance away from your head (with many other variables).
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Boostage »</TD></TR><TR><TD CLASS="quote">colder plus might help but water injection will knock it down at least 200 degrees. plus clean the buildup on your pistons.</TD></TR></TABLE>
water injection is not required. but would drop temps down a lot
Just keep an eye on it for any changes. If it goes up or down noticably, then you should be concerned.
josh</TD></TR></TABLE>
It's normal for where your probe is placed.
Myself and another buddy has it placed in the same position, and have EGT temps right where yours are, if not slightly higher. I have had my car tuned twice by different tuners...same result
There's actually a calculation to determine your actual EGT's based on where you put it, and distance away from your head (with many other variables).
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Boostage »</TD></TR><TR><TD CLASS="quote">colder plus might help but water injection will knock it down at least 200 degrees. plus clean the buildup on your pistons.</TD></TR></TABLE>
water injection is not required. but would drop temps down a lot
Just keep an eye on it for any changes. If it goes up or down noticably, then you should be concerned.
08-07-2006, 07:25 AM
#22
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Re: High EGT problem (96BLkGSR)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 96BLkGSR »</TD></TR><TR><TD CLASS="quote">It's normal for where your probe is placed.
Myself and another buddy has it placed in the same position, and have EGT temps right where yours are, if not slightly higher. I have had my car tuned twice by different tuners...same result
There's actually a calculation to determine your actual EGT's based on where you put it, and distance away from your head (with many other variables).
.</TD></TR></TABLE>
remember the further away from your head the lower the egt's will read. If egt's are high after the turbine housing then they will be even higher where they are normally read in one of the manifold runners.
Myself and another buddy has it placed in the same position, and have EGT temps right where yours are, if not slightly higher. I have had my car tuned twice by different tuners...same result
There's actually a calculation to determine your actual EGT's based on where you put it, and distance away from your head (with many other variables).
.</TD></TR></TABLE>
remember the further away from your head the lower the egt's will read. If egt's are high after the turbine housing then they will be even higher where they are normally read in one of the manifold runners.
08-07-2006, 01:28 PM
#23
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update: my colder plugs reduced EGTs atleast 200*!! i went from a pegged 1600, to just over 1400 degrees after multi-gear, WOT pull.
i went from 7s to 8s.
i went from 7s to 8s.
08-07-2006, 01:46 PM
#24
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Re: (bch5428)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bch5428 »</TD></TR><TR><TD CLASS="quote">update: my colder plugs reduced EGTs atleast 200*!! i went from a pegged 1600, to just over 1400 degrees after multi-gear, WOT pull.
i went from 7s to 8s.</TD></TR></TABLE>
around how much power are you at right now?
i went from 7s to 8s.</TD></TR></TABLE>
around how much power are you at right now?
08-07-2006, 06:25 PM
#25
Re: (bch5428)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bch5428 »</TD></TR><TR><TD CLASS="quote">update: my colder plugs reduced EGTs atleast 200*!! i went from a pegged 1600, to just over 1400 degrees after multi-gear, WOT pull.
i went from 7s to 8s.</TD></TR></TABLE>
hmmm
1 step colder make such a difference?
interesting
i went from 7s to 8s.</TD></TR></TABLE>
hmmm
1 step colder make such a difference?
interesting
