DragRaceResults.Com    Bracket Talk    Bracket Talk Forum  Hop To Forum Categories  Tech Talk - by Abruzzi    Co2 tuning with Methanol
Page 1 2 
Go
New
Find
Notify
Tools
Reply
  
Co2 tuning with Methanol
 Login/Join
 
DRR Trophy
Picture of Bludog331
posted
Brand new to having Co2 sensors and monitoring here.It's the wego III system and uses lambda readings. Currently I'm seeing mostly mid .70's and the car is killer in the heat. So probably not changing anything unless it's crazy lean for now. I do want to know more about tuning for when the cooler weather comes though. This combo has always been really good in the heat, but when the cooler temps come, it gets inconsistent and all of it seems to be from the 330 to 660 ft.

So let's start with the basic question of which way is leaner and which way is richer. Is a higher number leaner or richer and vise versa? Thanks for any feedback in advance.
 
Posts: 24 | Location: Cleveland, TN | Registered: December 11, 2008Reply With QuoteReport This Post
DRR Top Comp
posted Hide Post
Smaller number is fatter. You look to be way rich to me but others might disagree. Mid 70's is pretty fat.


Clowns to the left of me, Jokers to the right. Here I am.......
 
Posts: 5334 | Location: stuck in the middle with you! | Registered: March 11, 2002Reply With QuoteReport This Post
DRR Top Comp
posted Hide Post
One more thing, there's a nice color chart on the internet that you can print out to give yourself a guide. Just do a search. Good luck!


Clowns to the left of me, Jokers to the right. Here I am.......
 
Posts: 5334 | Location: stuck in the middle with you! | Registered: March 11, 2002Reply With QuoteReport This Post
DRR Trophy
posted Hide Post
 
Posts: 138 | Location: Midlothian, Texas | Registered: October 19, 2000Reply With QuoteReport This Post
DRR Top Comp
posted Hide Post
^^^^ Yep, that's the one!


Clowns to the left of me, Jokers to the right. Here I am.......
 
Posts: 5334 | Location: stuck in the middle with you! | Registered: March 11, 2002Reply With QuoteReport This Post
DRR Trophy
Picture of Bludog331
posted Hide Post
This is exactly what I've been looking for guys. Thanks so much!
 
Posts: 24 | Location: Cleveland, TN | Registered: December 11, 2008Reply With QuoteReport This Post
DRR S/Pro
Picture of CURTIS REED
posted Hide Post
I'm at .89 to .93 lambda in the heat depending on what part of the run you look at but different sensors will read slightly different. Mine are in the individual tubes. Did you do your free air calibration? Have your sensors ever seen gas? I'm really surprised to see that rich of a mixture not causing you issues.

Curtis



____________________________
2017 and 2018 Osage Casinos Tulsa Raceway Park No-Box Champion

2018 Div4 Goodguys Hammer award winner
 
Posts: 3143 | Location: KIEFER, OK. | Registered: August 17, 2007Reply With QuoteReport This Post



DRR Trophy
Picture of Bludog331
posted Hide Post
quote:
Originally posted by CURTIS REED:
I'm at .89 to .93 lambda in the heat depending on what part of the run you look at but different sensors will read slightly different. Mine are in the individual tubes. Did you do your free air calibration? Have your sensors ever seen gas? I'm really surprised to see that rich of a mixture not causing you issues.

Curtis


To be honest, I'm not sure. I bought the car turn key and it's never had any problems. I'm pretty sure it's never seen gas and the guy gave me all the paperwork and a lot of notes he had with the system. I would assume it's been calibrated, but I'm not sure. I'm gonna throw some bigger high speed air bleeds in it this weekend and see how it responds to being leaned out a bit. My experience with alcohol is that's it's happy when it's a little fat (from a consistency standpoint) until the weather changes. Which makes perfect sense now that I know I'm fat and the cooler air is when it gets inconsistent.
 
Posts: 24 | Location: Cleveland, TN | Registered: December 11, 2008Reply With QuoteReport This Post
DRR Trophy
Picture of Bludog331
posted Hide Post
Also, my sensors are in the collectors as opposed to the individual tubes.


Looking for a good used 177 Weiand for a SBC
 
Posts: 24 | Location: Cleveland, TN | Registered: December 11, 2008Reply With QuoteReport This Post
DRR Pro
Picture of Roger McGinnis
posted Hide Post
Before you embarrass yourself to long. It's "O2" sensor - oxygen
CO2 is carbon dioxide.

You may never get an accurate reading with the sensor in the collector.



ΜΟΛΩΝ ΛΑΒΕ
 
Posts: 561 | Location: Republic of Texas | Registered: January 16, 2011Reply With QuoteReport This Post
DRR Pro
Picture of AlkyIROC
posted Hide Post
Thanks guys. I'm glad you like my chart. It's not carved in stone but gives you a rough idea of where to tune. It's always best to tune fat then lean it down.


www.hardtail.com Stephen's Racing Page
Best ET: 9.029
Best MPH: 150.45

 
Posts: 1356 | Location: Calgary | Registered: June 06, 2001Reply With QuoteReport This Post
DRR Elite
posted Hide Post
quote:
Originally posted by Roger McGinnis:
Before you embarrass yourself to long. It's "O2" sensor - oxygen
CO2 is carbon dioxide.

You may never get an accurate reading with the sensor in the collector.


Indeed on the o2.
Some cars have no choice but to go in the collector.


Foxtrot Juliet Bravo
 
Posts: 6453 | Location: Illinois | Registered: July 08, 2004Reply With QuoteReport This Post
DRR Top Comp
Picture of Curly1
posted Hide Post
We are all making a big assumption that they are calibrated the same and they may not be.

Now on mine I am at 12.9 to 13.1 on Gas scale (I run alcohol just use Gas scale for simplicity) which is about .880 to .890 on the Lambda scale or 5.74 to 5.67 on the alcohol scale. So I would say you are probably pretty fat. Once again assuming your system is calibrated like others.

And they are right about being in the collector. My understanding is the unlike EGT the O2 should be the same all way down the pipe until it gets too close to outlet where it may be contaminated by fresh air. If you think fresh air may be messing up the signal you could move it further up the pipe or put and extension on the collector.


If I was you I would definitely try to lean it down some and see what it does. Think you will like it and it will be more consistent in better weather.


https://postimg.cc/gallery/np3zpruo/
"Dunning-Kruger Effect"
-a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge.

Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue.

4X NE2 CHAMPION. 2020 TDRA NE2 Champion
 
Posts: 4282 | Location: United States of Texas | Registered: April 02, 2011Reply With QuoteReport This Post
DRR Top Comp
posted Hide Post
If it’s in the collector and it’s mid 70s, it’s fat.


Clowns to the left of me, Jokers to the right. Here I am.......
 
Posts: 5334 | Location: stuck in the middle with you! | Registered: March 11, 2002Reply With QuoteReport This Post



DRR Sportsman
posted Hide Post
quote:
Originally posted by Roger McGinnis:
Before you embarrass yourself to long. It's "O2" sensor - oxygen
CO2 is carbon dioxide.

You may never get an accurate reading with the sensor in the collector.


For a brief moment...I thought huh there is a new trick I'm not familiar with utilizing co2? LMFAO.



Configuration: 3350#, 582 C.I.,

60 - 1.24
1/8 - 5.53@ 126MPH
1/4 - 8.73@ 159MPH



3700#+210lb driver, FULL interior, through mufflers, 10.5 tire.
60'-1.333 (IN 4000ft DA! Joisy Math excluded; 1.25sec using JOISY MATH.) Wink
1/4 - 9.60@144MPH

 
Posts: 1462 | Location: St Marys | Registered: January 12, 2004Reply With QuoteReport This Post
DRR Pro
posted Hide Post
For those of you that have EGT and / or O2 , are you tuning using these numbers or are you using your ET slip?
 
Posts: 2676 | Location: 53056 | Registered: December 30, 2009Reply With QuoteReport This Post
DRR Trophy
Picture of Bludog331
posted Hide Post
quote:
Originally posted by Roger McGinnis:
Before you embarrass yourself to long. It's "O2" sensor - oxygen
CO2 is carbon dioxide.

You may never get an accurate reading with the sensor in the collector.


You are correct indeed. It is O2 and Co2 is carbon. I made a typo.

Having said that, before you embarrass yourself too long. It's "too" long. Too is an an expression of time. "To" is not. But by all means, thanks for trolling bye.


Looking for a good used 177 Weiand for a SBC
 
Posts: 24 | Location: Cleveland, TN | Registered: December 11, 2008Reply With QuoteReport This Post
DRR Sportsman
posted Hide Post
I usually say "my sensor, in my header collector, on my engine, reads..."

Use it as a diagnostic tool, not necessarily an absolute.
 
Posts: 240 | Location: Texas | Registered: October 01, 2007Reply With QuoteReport This Post
DRR Top Comp
Picture of Curly1
posted Hide Post
quote:
Originally posted by markemark:
For those of you that have EGT and / or O2 , are you tuning using these numbers or are you using your ET slip?


ET slip. Period. Your O2 may be calibrated different than mine or anyone else's. Tune to best ET and then use your O2 numbers what ever it is to repeat or find your tune after changes.

I do not mean for this to sound bad but at the end of the day do you want a car that runs fast or do you want a specific O2 number? Watch your ET.

From my experience the EGT's have been totally useless and I do not even record them any more. O2 has been very important.


https://postimg.cc/gallery/np3zpruo/
"Dunning-Kruger Effect"
-a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge.

Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue.

4X NE2 CHAMPION. 2020 TDRA NE2 Champion
 
Posts: 4282 | Location: United States of Texas | Registered: April 02, 2011Reply With QuoteReport This Post
DRR Pro
Picture of Roger McGinnis
posted Hide Post
First step,,,,,,,,,,,, get your sensor out of the collector.



ΜΟΛΩΝ ΛΑΒΕ
 
Posts: 561 | Location: Republic of Texas | Registered: January 16, 2011Reply With QuoteReport This Post
  Powered by Social Strata Page 1 2  
 

DragRaceResults.Com    Bracket Talk    Bracket Talk Forum  Hop To Forum Categories  Tech Talk - by Abruzzi    Co2 tuning with Methanol

© DragRaceResults.com 2024