bc_fd3s

iTrader: (2)

Any dual EGT out there that are digitally loggable? Just looking to use it for tuning purposes.

At this point I've only found the PLX, but unfortunatley you need two separate modules along with the sensors to run two probes.

Anything else out there?

NissanConvert

iTrader: (1)

Howard did a thread on it; found it:
https://www.rx7club.com/showthread.p...ht=digital+egt

fd_neal

iTrader: (4)

Do you need the EGT gauge to do the logging?

If you have a datalogit or other ECU that accepts 0-5v then this will do the trick http://www.simplecircuitboards.com/Thermocouples.html

bc_fd3s

iTrader: (2)

I already bought the circuit boards stuff from Howards thread... I just haven't gotten the actual sensors yet.

bc_fd3s

iTrader: (2)

I just need it for datalogit... don't need the gauge

fd_neal

iTrader: (4)

http://www.omega.com/Temperature/pdf/TC-NPT.pdf

try these, 1/8" exposed tip will give the best response but will live a short life if you run the car hard for long periods.


EDIT: Ill post more later, but the stainless steel option that I posted isnt the best. But you can use the probe config utility on the omega site and use their higher temp materials...

Howard Coleman

iTrader: (6)

it's great to see another EGT thread... especially with the words digital and loggable. you just have to be able to log preturbo EGTs if you are serious about tuning.

you are looking for 1400 between zero and 14 psi and no more than 1700 tops.

it is important to raise EGTs in the zero to 14 psi area.

i found my AFRs perfect in that area on the dyno yet my EGTs were 1000-1100. i changed the timing, the EGTs sremained the same but the motor started to bark.

in addition, steel apex seals start to warp above 1700 so you need to be aware...

AI does not reduce EGTs. AI reduces CCP. EGTs are more a function of timing and AFR.

the main point is to skip post turbo EGT and skip an analog gauge.

hc

NeoTuri

iTrader: (2)

Interesting...

I was thinking about routing the signal directly into the PFC.

fd_neal

iTrader: (4)

http://www.omega.com/config/probeconfig_TC.html
K type probe, made from super omegaclad XL will be the highest temp probe, rugged junction, stainless overbraid should be fine. If you go this route you will need to use a compression fitting to seal and hold the probe to the exhaust manifold. For this check out someone like swedgelock 1/8npt thread x 1/16 compression fitting and get the exhaust manifold welded with a 1/8 bung. you will have to get a custom length of 2 or 3 inches for the probe and 1/16 diameter. You MIGHT need to drill out the swedge fitting for the probe to fit through. As i said above exposed tip will give the quickest response, but sacrifices durability.

I used a pair of exposed tip thermocouples from teamrip (should be mentioned in the other thread) but they didnt last a season of roadracing. So ill be changing to pretty much the setup that i described above and see how it works out.

neoturi unless you know something that I dont there is no way to connect the probes directly to the powerFC, needs to be through a datalogit and even then you can only monitor it, the computer wont react to anything it sees. Newer ECU's will be able to work with the EGT input but even then you will likely need it to be 0-5volt

NeoTuri

iTrader: (2)

Yes, I don't expect the PFC to do anything about an EGT signal as I will be using the OMP position sensor wiring for it (I would also use the fuel temp sensor but it actually effects engine control).

Doing this puts the readings in sync with all of the other instrumentation.

P.S. I'm trying to do all of this without the datalogit.

grimple1

iTrader: (1)

i've been working on this, too.

here's what I've decided to go with.

2x EGT Probes
http://tscsensors.com/egtep0720001ssnexhau.html
2372°F
200milisecond response time


2x Digital Gauges with ability to route to 5v logger
http://tscsensors.com/pmdrd0000000ao0anal.html
Analog retransmission output (to Data Logger)
Visible high temperature alarm LED
Display Peak Hold Button


2 Weld in Stainless Steel Sensor Bungs
http://tscsensors.com/bngad0000000180.html


It's a little pricey but it gets the best of both gauge and logging world in a single package. 293.00 and you're set. Course it can be done cheaper but I felt most comfortable with this setup.

bc_fd3s

iTrader: (2)

Yup, those are the sensors I am going to buy. I already picked up the voltage converters and tomorrow I will buy the sensors. I have no need to watch EGT as I drive. I am competent a good tuner (which I have yet to find) will do everything correctly at the time of the tune and after then there is really no need to monitor EGT or AFR.

This engine I am adamant at doing everything I can to make this engine last forever. Tuning with AFR and EGT along with water injection and keeping the boost under 20PSI will keep me more than happy.

Looking forward to ripping up the track this yet.

grimple1

iTrader: (1)

I'm curious as to which converters you went with.

this
http://www.simplecircuitboards.com/Thermocouples.html

or this?
http://www.o2simulator.com/index.php...products_id=13