Quick Fuel Technology 34-6 User Manual

www.quickfueltechnology.com

P/N 34-6

270-793-0900

Installation Instructions for 34-6 Billet Metering Block

Thank you for purchasing our Pro Billet alcohol metering block.
Installation is essentially the same procedure as replacing a conventional metering block. There are a couple
of features and tuning aspects of this metering block you should become familiar with. At the top of the
straight “V” is the idle feed restriction (see illustration below). This screw-in restriction controls the fuel side
of the idle and off-idle air/fuel mixture.

The emulsion holes, the four emulsion bleeds in the serpentine slot are pre-calibrated. These pre-calibrated
emulsion bleeds are a pattern that is a race proven combination and works for most applications where the
carburetor size is correct for the engine.

CAUTION: Do not make drastic emulsion size changes as you can significatly alter the air/fuel mixture ration
and could cause damage to the engine. It is highly recommended that when experimenting with emulsion
calibration you consult one of the many books available on carburetor modification and use one or more
devices that montors air/fuel ratio throughout the operating RPM range.

Idle Feed
Restriction

Typical QFT 2-Circuit Billet Metering Block

Emulsion Bleeds

Power Valve Channel
Restriction

We thank you for purchasing Quick Fuel Technology products. We are passionate about about our products and
your performance - if you are experiencing any difficulty in your installation or are having other issues please call
our technical serivce phone line at 270-793-0900. Our business hours are M-F 8:00 am - 5:00 pm Central Time.

©2010 QUICK FUEL TECHNOLOGY 99-34-6