The Hands-On Process

Before the rebuild can even begin, each carburetor is disassembled, cleaned, and inspected by a single technician. This process is not an assembly line operation, and one technician works on a carburetor from start-to-finish. Rebuilding carburetors this way ensures the core is not only in good condition and can be restored or rebuilt, but also ensures quality control can be monitored. If the technician finds the core has damaged or is missing parts, JET generally has – or can get – the parts that need to be replaced. If it is beyond repair, JET can usually supply the customer with a suitable core that can be rebuilt. Performance In Stages

A Stage 1 rebuild is for engines that are not modified. It starts with the unit being disassembled, cleaned, and then subjected to a rigorous inspection process. The casting plugs are sealed with epoxy to prevent leak-down into the intake manifold, and all fuel circuits are checked for proper orifice sizing. The calibration is also checked for proper jet sizing and the use of proper primary and secondary-metering rods. The carburetor is then reassembled with high-quality components, including a new float, choke pull-off, and bronze-bushed throttle shafts. If you are looking for factory-stock performance, a Stage 1 rebuild delivers the goods.

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The secondary vacuum-break is modified and installed to increase the opening of the secondary air door to eliminate bogging under rapid, hard throttle conditions.
Stage-1 Typical Application:

• Stock engine applications.

For those looking to utilize a performance-upgraded Quadrajet, the Stage 2 rebuild might be just what you need. This second-level upgrade includes all of the features found in Stage 1, and also, upgrades like a fully re-calibrated idle, off idle, main, accelerator pump, and high-speed circuits. The mods are designed to be in sync with any modifications or upgrades done to the engine. You simply tell JET what parts you have used to build your engine, and the carburetor you get will be rebuilt and calibrated for it. This is for the enthusiast that is employing entry-level mods like an aftermarket intake manifold, headers, ignition, and/or a non-stock – but mild – camshaft. In a nutshell, the Stage 2 upgrades deliver improved idle quality, instant throttle response, and the maximum delivery of torque and horsepower in mild-performance situations.