EGT x6 @ air injection ports?

[reclino]

Is it possible to use the air injection ports to retain EGT probes? Seems like it would be a convient place to put them. Then tune CIS unit so EGT matches at each.... Has anyone done this yet.
Thanks
David

[kenikh]

I've wondered this...

Have you measured the diameter and thread pitch of the air injector port? From there, it is just a matter of finding a compatible EGT sensor.

[OldSpool87]

Originally Posted by reclino

Is it possible to use the air injection ports to retain EGT probes? Seems like it would be a convient place to put them. Then tune CIS unit so EGT matches at each.... Has anyone done this yet.
Thanks
David

Interesting idea. Does CIS allow for tuning at the cylinder level though?

Curious how it turns out.

[kenikh]

^ it can be done

[JFairman]

Originally Posted by kenikh

I've wondered this...

Have you measured the diameter and thread pitch of the air injector port? From there, it is just a matter of finding a compatible EGT sensor.

They're 10mm x 1mm thread pitch.

[quattrorunner]

I'd love to see a gauge with six readouts.
this is cool.
http://www.ebay.com/itm/Aersopace-Logic-6-cylinder-EGT-gauge-ASL-EGT100-/331552214070?hash=item4d320d4c36&vxp=mtr

[smurfbus]

I have also thought about it but havent found any sensors that fit straight up. It would need some adapters and the electronics to log the data would cost pretty much also. I think I will settle for hand held temp meter for now as I dont think I would need that data all the time anyway. Logging AFR from those ports would be interesting too but again it would need some adapters to work.

[heliolps2]

plus 1

[kenikh]

The Audi 2.7T uses an EGT that is M12x1mm. Easy to machine in. Haven't found one @M10x1mm yet.

[reclino]

http://www.amazon.com/gp/aw/d/B00LCWRRE2/ref=mp_s_a_1_7?qid=1431817316&sr=8-7&pi=AC_SX110_SY165_QL70&keywords=egt+sensor&dpPl=1&dpID=41o3oem50fL&ref=plSrch

[reclino]

I believe an adruino could be programmed to display 6 EGT's with a little work.

[Spenny_b]

I'm just running 2x EGT's, one per secondary equidistant from the primary>secondary merge collector; came into their own when mapping a few weeks ago. The sensors I use are the same as the Zeitronix units use ---> EGT Probe & 8 foot extension (K-type plug) - EFI-Parts.co.uk: Connectors, Sensors, Trigger wheels, Wideband, Adaptronic, Zeitronix, AEM

The thread for this type is 1/8" NPT.

I then run them through a 4-channel AEM thermocouple amplifier to output a signal suitable for my ECU; of course for CIS you won't need this (but somebody in future might...)

[smurfbus]

The Audi 2.7t EGT is not readable on audi ecus before 945C ( cant recall if they gave meaningfull data though for other ecus) but Audi RS6 C5 EGT sensor reads from iirc 50c all the way up to 1100C and I have encoded those for my ecu on my S4. Innovate has stuff to gather the EGT logs quite nicely too and you can route the data for ie. Ms3 too to use as trim data on full sequental.

[WERK I]

Don't EGT probes have relatively slow response times?

[Spenny_b]

Originally Posted by WERK I

Don't EGT probes have relatively slow response times?

Quoting from memory about previous conversations with my pal who looks after my mapping; yes, versus Lambda control it's not quite as quick, so best used as a cross-check rather than an absolute measure.

(again, quoting from memory; always secondary to my looks, and that's dismal at best )

[Porsche 935]

I run 6 egt sensors. It has an aircraft monitoring unit than scans each cylinder and will show you if any cylinder is more than 50 degrees off. But sensors had to be in flame travel area, I believe 1 1/2 inches from head in each exhaust pipe. My EFI system and lean or enrich cylinders as needed. Bought from chief aircraft. Sensor leads can be made to length.

[fredmeister]

Originally Posted by JFairman

They're 10mm x 1mm thread pitch.

Yes I concur.

You can use an 1/8 inch pipe thread in those ports since it is 1/8 inch by 27 threads per inch which is pretty damn close to M10 by 1mm.

you might even run a 1/8 pipe tap thru there first to create a better fit.

Fred

[copbait73]

Typical T/Cs are shielded and have slow reaction time however you can buy open junction T/Cs which are virtually instantaneous. I used open junction in the days before air fuel ratio monitoring was available.......and in many aircraft.

[Hams930T]

Possible but seems like overkill

[flightlead404]

Originally Posted by reclino

I believe an adruino could be programmed to display 6 EGT's with a little work.

I like the Arduino idea, although I think a Pi might be a better choice. With a Pi you can easily log the data to a USB thumb drive or send it via WiFi without adding shields etc. With the Pi you could easily add some additional sensors to your data logging as well, RPM, AFR, CHTs and so forth.

I'm putting an EFIS in the plane right now that does all this. I know from past experience the data is very useful for tuning and diagnostic purposes.