Tuning 45 Webers with an air fuel gauge

[Nicad]

I have an AIM air fuel gauge sitting on the shelf. How useful would this be to dial in sidedraft Webers? I am a noob to carb tuning.

[Emyers]

Get one of these, you wont be sorry easy to measure flow. Works a treat on my Mikuni PHH 44.

http://www-b.jcwhitney.com/carburetor-synchronizer/p2008076.jcwx?TID=8014524FT2&utm_source=Google_Product_Search&utm_medium=CSE&utm_content=product-18076G&zmam=15972153&zmas=18&zmac=129&zmap=18076G

May have to cut and paste into your browser.

Earl

74 02lux

02 M Roadster

72 Volvo 1800ES

[Lorin]

If it is a wideband O2 sensor it will be extremely handy for tuning. In fact you will probably never go back to blind guessing.

[TobyB]

a wbo2 and a couple of Weber books and $250 worth of jets and a few

weeks of dicking with it and it'll start to make sense.

heh

t

[M2M3M3]

What Toby said!

[Harv]

I would also second the use of a wide band O2 sensor. If you have a digital gauge that you want to use but it's for a narrow band sensor you can use an Innovate LC1 and program one of the outputs to mimic a narrow band output (0-1volt). I did this with my old Volvo. Once you see the info from a wide band you will soon see that a narrow band is almost useless.

John

[JerryC]

I would also second the use of a wide band O2 sensor. If you have a digital gauge that you want to use but it's for a narrow band sensor you can use an Innovate LC1 and program one of the outputs to mimic a narrow band output (0-1volt). I did this with my old Volvo. Once you see the info from a wide band you will soon see that a narrow band is almost useless.

John

I don't think it even rates "almost useless". I've tried a narrow band to tune my tii. It might be okay if your tuning is already pretty close, but for wherever I was starting from it was TOTALLY useless.

[TobyB]

Just about all the narrowband does for you is tell you if your

cranky carb is lean or rich-

I used to use it as an idiot light when I got lost. Usually, it

proved I was an idiot, but didn't help me get much smarter.

The wideband is a gauge, from which you can make calibrated corrections...

t

[Lorin]

^ Yes. A narrow band gauge is an ON OFF switch were as a wide band is a more like a dimmer switch. Get a wideband, you will not be disappointed, regret your choice, or ever go back.

[Chris_B]

A wideband 02 sensor is essential to tune dual DCOEs. You will also need a flowmeter, such as the ST syncrometer, to balance the carbs.

[Nicad]

Actually it will be to monitor the tune of triple webers on a 3.0. I would think pinpointing which carb is doing what is difficult though

[Chris_B]

Indeed... but having the rough data the AFM will provide will be significantly better than a seat-of-the pants guess. In my own experience with my 02, I found that too rich behavior can seem like too lean behavior, but of course the cure is radically different.