Is this going on the race car Greg? Dat der be addin some weight!!
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| 4 channel EGT / Pyrometer System https://slantsix.org/forum/viewtopic.php?t=66234 |
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| Author: | Greg Ondayko [ Tue Oct 12, 2021 7:53 am ] |
| Post subject: | 4 channel EGT / Pyrometer System |
If you had to choose 4 out o the 6 cylinders to record data in which ones would you use? I would Think 1, 2, 4,6, then interpolate that data to assume tuning strategies for 3,5 from data provided from cyl's 2,4? Is it even a worry if you have ITB's ? Whaddya Think? Greg |
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| Author: | Dart270 [ Tue Oct 12, 2021 10:07 am ] |
| Post subject: | Re: 4 channel EGT / Pyrometer System |
Nice question, Greg. For symmetry, you want 1 from each symmetric pair. So, you could do 1, 2, 3 or 1, 5, 3 and then roll the dice for the last one. Cyl 1 tends to run hottest due to the coolant path, so best to read that one for sure as a worst/hottest case. I would probably pick 6 as the 4th one so I could get a cooler version of cyl 1. Lou |
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| Author: | ProCycle [ Tue Oct 12, 2021 11:34 am ] |
| Post subject: | Re: 4 channel EGT / Pyrometer System |
Maybe the 4th one after the collector. Might give a clue if something was too far off with one of the un-monitored cylinders. EDIT: my aging brain read this as AFR not EGT. So, nevermind... |
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| Author: | emsvitil [ Tue Oct 12, 2021 5:49 pm ] |
| Post subject: | Re: 4 channel EGT / Pyrometer System |
Can you get 2 extra sensors and plumb all 6? Then you can figure out which 4 make the most sense........... |
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| Author: | Greg Ondayko [ Tue Oct 12, 2021 6:56 pm ] |
| Post subject: | Re: 4 channel EGT / Pyrometer System |
I don't think so On the system I was looking at.. its either 4 or 8. Greg |
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| Author: | emsvitil [ Tue Oct 12, 2021 10:43 pm ] |
| Post subject: | Re: 4 channel EGT / Pyrometer System |
Only use 4 at a time |
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| Author: | Joshie225 [ Wed Oct 13, 2021 8:16 am ] |
| Post subject: | Re: 4 channel EGT / Pyrometer System |
If I had to do this I would use cylinders 1,3, 5 and 6. #1 for the same reason Lou stated, it's hottest, and it's also the furthest uphill. #3 as it and #4 have the straightest 'look' at a single carburetor, but you probably only need to sample one of them. #5 (or #2) as it's in the middle of a group of 3. #6 as it''s the farthest down hill and has the coldest combustion chamber. This is essentially what you settled on except I chose #5 instead of #2 as plenum manifolds can sometimes run the rear cylinders rich and this setup samples 2/3 of the front and rear. |
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| Author: | Greg Ondayko [ Wed Oct 13, 2021 8:41 am ] |
| Post subject: | Re: 4 channel EGT / Pyrometer System |
Cool, thanks for the insight. Greg |
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| Author: | Rick Covalt [ Wed Oct 13, 2021 2:23 pm ] |
| Post subject: | Re: 4 channel EGT / Pyrometer System |
Is this going on the race car Greg? Dat der be addin some weight!!
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| Author: | Greg Ondayko [ Wed Oct 13, 2021 3:48 pm ] |
| Post subject: | Re: 4 channel EGT / Pyrometer System |
Yes and yes. I have more areas to slice and dice that I have not even touched yet. Greg |
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| Author: | MadScientistMatt [ Thu Oct 14, 2021 6:31 am ] |
| Post subject: | Re: 4 channel EGT / Pyrometer System |
Quote: Nice question, Greg.
That is how I would handle this if I had to - but any individual cylinder could develop a problem. If I were going for EGT, I'd spring for a system that could watch all the cylinders.
For symmetry, you want 1 from each symmetric pair. So, you could do 1, 2, 3 or 1, 5, 3 and then roll the dice for the last one. Cyl 1 tends to run hottest due to the coolant path, so best to read that one for sure as a worst/hottest case. I would probably pick 6 as the 4th one so I could get a cooler version of cyl 1. Lou |
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| Author: | Greg Ondayko [ Thu Oct 14, 2021 6:59 am ] |
| Post subject: | Re: 4 channel EGT / Pyrometer System |
Is there such a system that would datalog / interface with MS3? If so I might be swayed to use that one instead of the original stand alone that I was shopping on. Greg |
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| Author: | ProCycle [ Thu Oct 14, 2021 8:09 am ] |
| Post subject: | Re: 4 channel EGT / Pyrometer System |
Quote: Is there such a system that would datalog / interface with MS3?
This?If so I might be swayed to use that one instead of the original stand alone that I was shopping on. Greg --> https://www.diyautotune.com/product/can ... interface/ |
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| Author: | Greg Ondayko [ Thu Oct 14, 2021 9:56 am ] |
| Post subject: | Re: 4 channel EGT / Pyrometer System |
Yep. Cool. Thanks pc.. I was looking for that.. more channels, better price. Greg |
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| Author: | emsvitil [ Thu Oct 14, 2021 3:34 pm ] |
| Post subject: | Re: 4 channel EGT / Pyrometer System |
Use the extra 2 channels.......... One just before the turbo, one after............... 
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