is there a guage for checking AFR on carburetors?

 

Several companies, like Cyberdyne and Autometer, make A/F ratio gauges for ~$30-50 that work using a stock O2 gauge on any motor.

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"American made baby. 100% American iron. The muscle among the masses. My hero. Yep, you can take your ergonomically designed, space age, computer controlled, 4 door, cup holding map lighted split double wishbone split fold down retractable cargo covered moon roof piece of transportation and keep it. For I have felt the thunder. And I know the difference!"
JSP Motorsports
ICON Motorsports

 

are they dependable and accurate enough to tune a carb by?

 

Hey check out the Wide band O2 in the diy forum. Im building one to tune my holley.

 

I'm using an Autometer A/F ratio gauge on my carbed 383 car and it helps tune the carb tremendously. I have two O2 sensors, one on each collector and I use a switch to see each side with the single meter.

The DIY WB O2 sensor/meter will be more accurate, but for the money, the Autometer gauge is doing a great job helping me to tune the Holley carb......

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Phil87IROC
Blue '87 IROC, 383 Crate Motor, KB pistons, AFR 190 heads, TPIS ZZ-9 cam, Edelbrock RPM intake, 1" TD spacer, Hooker SC/LT headers w/ Mufflex Y-pipe, Holley 650 cfm DP Carb (#4777), Stock T-5, GM 3.42 gears w/Auburn posi.
Ohio Valley Dragstrip (KY) Trophy Bracket WINNER - 8.39 ET on a 1.82 sec. - 60'. Best MPH = 84.44. Still Tuning Carb!
Red '89 IROC L98, TES w/FlowMaster, 4th gen 1LE DS, 700R4, T-Tops, K&Ns w/open air boxes, 160 T-stat, Hypertech Chip, gutted MAF & CAT, Hypertech 53kv coil, MSD wires.
http://www.geocities.com/cfrios/Phil87IROC.html

[This message has been edited by Phil87IROC (edited December 05, 2001).]

 

Hey AustinT,quick question!!! I am very interested in this wideband o2 you talk of,what is needed parts wise and how involved is it?I looked on the DIY board but found no specifics,any links or help in any way much appreciated!I am looking into setting up an o2(prferrably a heated unit)to help with tuning my Demon on my Z.Does anyone really beleive or know that having an o2 to read has helped with their carb tuning?And last but not least what is needed to hook up a heated o2?Thanks for any help!

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1982 Z28:355,4 Speed,Lots of bolt ons

 

If your car doesnt have an ECM, wide band won't work, will it?

 

You can find Info on the Wide Band O2 at
www.diy-efi.org,

The wide band Is a tool for tuning, I dont think You can hook it up to run Fuel Injection. But you can use it to tune fuel injection, carb or whatever Your using.
The parts to build it can be bought for well under 200. I Have put together two boards but Im doing something wrong because The O2 is not heating Up. Hopefully I can get it worked out soon So I can tune My moody Holley.