Edelbrock #1406 Carb Tuning WB Verify

[RonJones]

I decided to join the wideband revolution and verify my 302's carb tuning with a PE bluetooth kit. About 20 yrs ago I put an offroad kit in the carb and played around with the jets and rods, doing it old school (stopwatch and that seems good/bad). I'm at 1,000 ft altitude. As I recall, this jet/rod combo is richer than stock, but not as rich as my first try, which absolutely cratered my already dismal mpg. I don't remember which jets I have in it but the initial run is with yellow 4” Hg springs and #1456 rods. My goal was AFR's of idle: 14.2, WOT: 12, Cruise: 15. I ended up going to a 8” spring as I had a lean spike when vacuum went below 10 in Hg. Runs pretty well now!


https://rumble.com/vo1oit-edelbrock-carb-calibration-check.html

https://rumble.com/vo1oz7-edelbrock-carb-vacuum-springs-calibration-check.html

 

[blubuckaroo]

I decided to join the wideband revolution and verify my 302's carb tuning with a PE bluetooth kit. About 20 yrs ago I put an offroad kit in the carb and played around with the jets and rods, doing it old school (stopwatch and that seems good/bad). I'm at 1,000 ft altitude. As I recall, this jet/rod combo is richer than stock, but not as rich as my first try, which absolutely cratered my already dismal mpg. I don't remember which jets I have in it but the initial run is with yellow 4” Hg springs and #1456 rods. My goal was AFR's of idle: 14.2, WOT: 12, Cruise: 15. I ended up going to a 8” spring as I had a lean spike when vacuum went below 10 in Hg. Runs pretty well now!


https://rumble.com/vo1oit-edelbrock-carb-calibration-check.html

https://rumble.com/vo1oz7-edelbrock-carb-vacuum-springs-calibration-check.html

You're lean. The springs won't make it richer. They just they just allow it to become richer at a different load. Use the metering rod/jet matrix to fix your lean condition first.

 

[RonJones]

You're lean

I'm sorry, when? Idle, Cruise, WOT?

I have the numbers I was looking for. The table I was using is seen below, followed by a second table from another source:

 

[Seventee]

Which wideband kit are you using, do you have a link?

 

[RonJones]

Which wideband kit are you using, do you have a link?

Here ‘ya go: (I liked this one because I didn't have to mount an instrument. I bought the extension cord so I could mount the unit under the dash, as it's not waterproof.)

https://pe-ltd.com/product/wideband/

https://www.amazon.com/gp/product/B083G91V9X/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

 

[Seventee]

Here ‘ya go: (I liked this one because I didn't have to mount an instrument. I bought the extension cord so I could mount the unit under the dash, as it's not waterproof.)

https://pe-ltd.com/product/wideband/

https://www.amazon.com/gp/product/B083G91V9X/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Thanks! It's about time I get into the 21st century...

 

[RonJones]

That's exacly what I was thinking when I bought it! If I had a criticism of the unit, I wish it displayed an optional 5 second average, as the direct readings can be kind of bouncy. The trend line sort of does that below, but gives a graphical sense rather than a number.