GAMIjector & turboGAMIjector Aircraft Fuel Injectors

Installation

It should take approximately an hour (slightly more for turbos) for yourmechanic to complete the installation and fill out the paperwork. Simply removeyour old injectors, and replace them with GAMIjector® fuel injectors. Nomodification of the engine fuel pressure or other engine settings should berequired.

To order GAMIjector, GAMI needs to know the injector size that’s in theengine currently. Please go here if you are uncertain how to find that: Help Us Help You

Take the GAMI Lean Test

The purpose of the GAMI Lean Test is to quantify the fuel/air ratio balance in the engine either before or after installing the GAMIjector® fuel injectors. Knowing this balance, and the value we call the GAMI Spread is important because it will tell you how much you can benefit from GAMIjectors® if your engine is not already equipped with them, and it will tell us if we need to adjust your engine balance if you are already equipped with GAMIjectors®.

The GAMI Spread is calculated by determining at what total engine fuel flow each cylinder reaches peak exhaust gas temperature (EGT) and subtracting the lowest flow from the highest flow. Most engines are considered to have good fuel/air ratio balance if the GAMI Spread is less than 0.5 gph.

There are three basic methods for performing the GAMI Lean Test which work well. The following methods assume that you have some instrumentation to measure the EGT on each cylinder and the total engine fuel flow (this may be digital or analog).

While following these test methods, GAMI highly recommends a safety pilot accompany you. We also recommend you keep the cowl flaps open, if so equipped, and you perform the test at 65% power. It may be necessary to use a lower power setting, as required, to keep the CHT under 400°F and/or the Turbine Inlet Temp (TIT) under your max continuous redline (Note: All turbochargers allow for short term exceedances of the TIT limit for leaning purposes - usually one minute or less).

Here is a list of the Continental Motorsand Lycoming engines that are eligible for GAMIjector® fuel injector installation.

Please note that we need to know more than just the engine model to completean order for the fuel injectors. See here forinformation on what to look for before ordering.