Quick Fuel Technology 34-6 Billet Metering Block Installation Instructions
Below you will find brief information for 34-6 Billet Metering Block. This document provides instructions on how to install and tune the 34-6 Billet Metering Block for use with Pro Billet alcohol metering blocks. The instructions include details on the idle feed restriction screw, the pre-calibrated emulsion bleeds, and the power valve channel restriction.
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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
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Key Features
- Pre-calibrated emulsion bleeds
- Idle feed restriction screw
- Power valve channel restriction
- Alcohol metering block
- Installation instructions
- Tuning information
Frequently Answers and Questions
How do I adjust the idle feed restriction on the 34-6 Billet Metering Block?
The idle feed restriction screw is located at the top of the straight "V" on the metering block. This screw controls the fuel side of the idle and off-idle air/fuel mixture.
What are the emulsion bleeds and what is their purpose?
The emulsion bleeds are four small holes located in the serpentine slot on the metering block. They are pre-calibrated to provide a race-proven air/fuel mixture ratio for most applications.
What is the power valve channel restriction?
The power valve channel restriction is a small passage in the metering block that controls the fuel flow to the power valve circuit, which is used when the engine is under load.
Should I adjust the emulsion bleeds on my 34-6 Billet Metering Block?
It is generally not recommended to adjust the emulsion bleeds as they have been carefully calibrated to produce an optimal air/fuel mixture. However, if you are experiencing problems with your carburetor, you can experiment with the emulsion bleeds, but it's important to consult a carburetor modification book and use an air/fuel ratio monitor during the process.
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