How to rebuild a Rochester Quadrajet 4MV carburetor
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Some basic [http://www.73-87.com/7387garage/drivetrain/myqjet.htm tips and links], from from 73-87.com. | Some basic [http://www.73-87.com/7387garage/drivetrain/myqjet.htm tips and links], from from 73-87.com. | ||
| − | ===Basic adjustments=== | + | ===Air fuel ratio=== |
| + | The a/f ratio requirements vary with the demand; richer for high demand (low vacuum) situations, leaner for light throttle cruise conditions, and in between these two when accelerating at less than WOT. | ||
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| + | [[File:Af chart.jpg]] | ||
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| + | ===Air/fuel ratio meter=== | ||
| + | Using an air/fuel ratio meter makes tuning a lot easier. They are available from several manufacturers, [http://www.fuelairspark.com/Products/FS-%27Digital%20Air/Fuel%20Meters%27-0.aspx this] is an example from FAST, there are several others: Innovative, Edelbrock, Auto Meter, etc. | ||
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| + | There are also instructions available online for making an A/F meter, an example can be seen [http://www.scirocco.org/tech/misc/afgauge/af.html '''here'''], from scirocco.org. | ||
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| + | ===Basic carb adjustments=== | ||
[http://vetteworks.tripod.com/qjet.htm Rochester 4MC, 4MV, M4MC, and E4ME Carburetors] from vetteworks.tripod.com | [http://vetteworks.tripod.com/qjet.htm Rochester 4MC, 4MV, M4MC, and E4ME Carburetors] from vetteworks.tripod.com | ||
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