Air/fuel meters

TexasNomad · Nov 20, 2008

Hey guys I was wondering.
If you were to install a A/F meter on a Carburetor engine could you perfectly tune in a Carb?
I've been looking at this on.
http://www.rpmoutlet.com/autop2.htm

dragogt · Nov 21, 2008

I'd think you'd be able to get pretty close.

Brian_B · Nov 21, 2008

Ok, this will show just how much I do not know, but that gauge says it works off the oxygen sensor.

I was not aware that the later carburated engines even had an oxygen sensor. When did they start doing that...and why?

I am familair with the vacuum guages, the dwell (chebies anyway), and tach to tune one. Dad still has his old dwell and tach meter thing.

dragogt · Nov 21, 2008

You'd have to have an O2 bung in the pipe to use it. The best one would be a wideband but thats like triple the price.

http://www.rpmoutlet.com/aemgauge.htm

blacksnapon · Nov 21, 2008

The problem with carburetors is the wear factor. If the shaft that the butterflies ride on,wear the carb body, you'll get an erratic reading. You may tune it perfectly in one setting, but at a different rpm range, or bumpy road, it may change. Its for this reason, carburetors and computers don't play well.

TexasNomad · Nov 21, 2008

Hm So a vac gauge is still your best bet to tune in carbs.

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Air/fuel meters

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