Monitoring EGTs on a turbo car
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Monitoring EGTs on a turbo car I would like to see the EGT's for each cylinder with all of the different intakes...
Has anyone done any testing like this?
Has anyone done any testing like this?
Last edited by Fireball; Jan 4, 2011 at 12:06 PM.
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From: Norn Iron
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From: Sydney
usually with the GMPP single plane manifold with edelbrock tall elbow at 22psi boost on methenol, i usually see a max of 35deg difference across 8 cylinders with zero corrections.
I have one of these intakes for the LS3 head. Is that the head you are running? 35 deg does not sound like much to me. Especially given the fact that we use EGT's on most of our industrial engines, and it is NOT easy to find 2 EGT's that read the same, even if they are in the same medium, that is when you get up to 1000 degs +.
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From: Sydney
I have one of these intakes for the LS3 head. Is that the head you are running? 35 deg does not sound like much to me. Especially given the fact that we use EGT's on most of our industrial engines, and it is NOT easy to find 2 EGT's that read the same, even if they are in the same medium, that is when you get up to 1000 degs +.
35 is not much at all for no cylinder trims on the ecus
on one of the ski race boats i built running a autronic ecu i can get them down to as close as 15deg by using the cylinder trims at the boost it runs normally, it runs a 565ci twin turbo big block chev..
I have one of these intakes for the LS3 head. Is that the head you are running? 35 deg does not sound like much to me. Especially given the fact that we use EGT's on most of our industrial engines, and it is NOT easy to find 2 EGT's that read the same, even if they are in the same medium, that is when you get up to 1000 degs +.
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From: Wasilla AK
you can build a fairly cheap well around 250 dollars something that would monitor egts across all the cylinders
I say thing because I built a powder coating oven and built my controller so I did alot of research in PID controllers and Thermal couplers mine for my oven cost 35 dollars and is within .1 degree tolerance for temps between -600 to 1200 deg F but they can be bought to be withing .0001 degree to 2600 degrees
I say thing because I built a powder coating oven and built my controller so I did alot of research in PID controllers and Thermal couplers mine for my oven cost 35 dollars and is within .1 degree tolerance for temps between -600 to 1200 deg F but they can be bought to be withing .0001 degree to 2600 degrees
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From: Wasilla AK
http://www.lightobject.com/JLD7100-D...oller-P66.aspx
http://www.lightobject.com/10ft-3M-K...uple-P114.aspx
then find a way to hook up 8 or to be able to cylce through the 8 different imputes Im sure I can figure a way to do it with time to design one
http://www.lightobject.com/10ft-3M-K...uple-P114.aspx
then find a way to hook up 8 or to be able to cylce through the 8 different imputes Im sure I can figure a way to do it with time to design one
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From: Sydney
i have it logging, oil pressure, fuel pressure, 8 egt's, rpm, diff speed, trans pressure, trans temp, boost and it gets water and air temp etc from one of the ecu's in the car.. it also controls the warning light and the boost
looks pretty good in the car too,
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From: Cecil County Raceway!!!
you can build a fairly cheap well around 250 dollars something that would monitor egts across all the cylinders
I say thing because I built a powder coating oven and built my controller so I did alot of research in PID controllers and Thermal couplers mine for my oven cost 35 dollars and is within .1 degree tolerance for temps between -600 to 1200 deg F but they can be bought to be withing .0001 degree to 2600 degrees
I say thing because I built a powder coating oven and built my controller so I did alot of research in PID controllers and Thermal couplers mine for my oven cost 35 dollars and is within .1 degree tolerance for temps between -600 to 1200 deg F but they can be bought to be withing .0001 degree to 2600 degrees
another issue is you need k-type probes that can withstand the high flow environment....I don't think you could get the probes alone for that price...
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From: Cecil County Raceway!!!
they retail for about 1k though
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From: Cecil County Raceway!!!
are they weld in probes? Thermocouples shouldn't be that far off...
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From: Wasilla AK
the thermal coupler I have in my oven is a K type and the pid controller can monitor any type but I dont know about the sampling rate
You weld in the bungs and then you screw in compression fittings. Then the probes slide into the compression fittings and lock in. it all logs thru the Holley EFI System.
The Holley bunches them all up for some reason, including the one that is way off if you look at the values on the left. They are going to address that ASAP but it's a new system with little user feedback but they are working with us VERY closely.
FYI, it says nitrous tunning on top but that's just because we grabbed one of the tables that we weren't using in order to throw in the 8 EGT's without haveing to move stuff around.
The Holley bunches them all up for some reason, including the one that is way off if you look at the values on the left. They are going to address that ASAP but it's a new system with little user feedback but they are working with us VERY closely.
FYI, it says nitrous tunning on top but that's just because we grabbed one of the tables that we weren't using in order to throw in the 8 EGT's without haveing to move stuff around.
IMHO the best EGT probes cost about 2 bucks each. Unless you are north of 1500 hp and have some $ what are you going to do with the data? If the AF is good, the plugs read out and the probes show 1,5,8 seventy five degrees higher than the rest???? Play with individual cylinder fueling....but the 2 buck probes will show that...
Makes sense for serious racers.....but hobby racing seems moot to me. Fun to gather the data, but not much to effect change.
Makes sense for serious racers.....but hobby racing seems moot to me. Fun to gather the data, but not much to effect change.