So I’m within a week of turning the key on this thing. Mentally, physically and financially drained, but still standing (perhaps just swaying a little).
Can someone please talk me out of “per cylinder” EGT monitoring - and Mark, I am looking specifically in your direction as someone who has crazy levels of telemetry!!
We are running the MS3ProPnP, with a raspberry pi dash, so it just seems logical at this stage to weld 4 NPT bungs into the exhaust manifold, screw in the thermocouples, connect to a quad-channel amp, then into the raspberry pi.
Does anyone know if the cheaper eBay thermocouples any good vs the expensive “Stinger” & “Bullet” ones?
Context:
- registered track car
- forged bottom end
- flowed head, stock cams, double springs
- GTX2867r twistmount
- E85 only
Tell me why individual EGT is just for poseurs, and that I need to stop finding excuses to turn the key!
Nearing the finish line - talk me out of 4 EGT sensors!
Moderators: timk, Stu, zombie, Andrew, The American, Lokiel, -alex, miata, StanTheMan, greenMachine, ManiacLachy, Daffy
-
- Fast Driver
- Posts: 118
- Joined: Wed May 04, 2016 8:29 pm
- Vehicle: NB8A - Turbo
-
- Speed Racer
- Posts: 7468
- Joined: Fri Feb 11, 2011 12:49 pm
- Vehicle: NA6
- Location: Purga, QLD
Re: Nearing the finish line - talk me out of 4 EGT sensors!
Happy to post data on EGT's for you I will not talk you out of them. They can help you identify issues, for example a cyl running cooler than the other may indicate a loss of compression.
This was when I was finding a fuel pressure issue. However, it does also graph the difference to the average, the car has been this way ever since it has been tuned so again I look for changes in the shapes.
Car Health by Eipeip, on Flickr
Did this convince you to not do it?
This was when I was finding a fuel pressure issue. However, it does also graph the difference to the average, the car has been this way ever since it has been tuned so again I look for changes in the shapes.
Car Health by Eipeip, on Flickr
Did this convince you to not do it?
-
- Fast Driver
- Posts: 118
- Joined: Wed May 04, 2016 8:29 pm
- Vehicle: NB8A - Turbo
Re: Nearing the finish line - talk me out of 4 EGT sensors!
Awesome, knew I could depend on you to complicate things! Yes, the idea being able to check that the engine is “temperature balanced” really appeals...
Sent from my iPad using Tapatalk
Sent from my iPad using Tapatalk
-
- Speed Racer
- Posts: 7468
- Joined: Fri Feb 11, 2011 12:49 pm
- Vehicle: NA6
- Location: Purga, QLD
Re: Nearing the finish line - talk me out of 4 EGT sensors!
You also need 4 x AFR’s as well.
-
- Fast Driver
- Posts: 118
- Joined: Wed May 04, 2016 8:29 pm
- Vehicle: NB8A - Turbo
Re: Nearing the finish line - talk me out of 4 EGT sensors!
Haha, good joke Magpie! But see, now you’ve done it - I’m pretty sure you actually aren’t joking, and can see the sense in being able to trim AFRs on a per-cylinder basis.
I can remember from an engine bay shot of yours Magpie that you have (or had - who can keep up with the changes) a thermocouple coming out of each exhaust runner.
- But are you running 4 widebands too?
- if a person was going to do that, you would need an”upstream” sensor for it to survive, yes?
I can remember from an engine bay shot of yours Magpie that you have (or had - who can keep up with the changes) a thermocouple coming out of each exhaust runner.
- But are you running 4 widebands too?
- if a person was going to do that, you would need an”upstream” sensor for it to survive, yes?
-
- Speed Racer
- Posts: 7468
- Joined: Fri Feb 11, 2011 12:49 pm
- Vehicle: NA6
- Location: Purga, QLD
Re: Nearing the finish line - talk me out of 4 EGT sensors!
No only one wideband for me. The AFR sensors would become consumables...
Who is online
Users browsing this forum: No registered users and 24 guests