AIRFLOW PERFORMANCE FUEL INJECTION MANUALS
AIRFLOW PERFORMANCE FUEL INJECTION INSTALL

A 3? rubber boot was fabricated to fit into the inlet scoop. The inlet ramp angle was adjusted to fit the inlet scoop on the cowl. The top plate was modified to fit the clamp plate for the FM-150L, and the filter was installed so that the top oval plate of the filter box held the filter against the floor of the fiberglass air box. A Vans FAB-320 AP-1 was purchased to be used for the air filter box. Re plumbing the fuel plumbing in the engine compartment using Teflon fire sleeved hoses. Installing new throttle and mixture cable brackets but retaining the original throttle and mixture control cables. Removing the carb heat and primer system. (No return lines, duplex selector valves or purge return is required using the FM-150L).

Replacing the low pressure engine driven pump with the high pressure engine driven pump. lighter than a Precision Silver Hawk) fuel control an installation was done which included replacing the low pressure electric pump with a high pressure aux. Data from the aircraft EFIS with the carburetor showed take off fuel flow full rich at 13.5 GPH at 2578 RPM and EGT/CHT cylinder 1 through 4 respectively 1240/399, 1244/377, 1385/393, 1350/368. According to the Titan dyno sheets the engine produced 178 HP on the Titan dynamometer. Multiple carburetors had been tried with no success. The engine was suffering from poor fuel distribution. The engine had one P-Mag and one electronic ignition system. A stock Vetterman crossover exhaust system was on this installation. The engine was a Titan 340 Stroker with a stock up draft sump and MA-4SPA carburetor. James Clark provided the subject aircraft an RV-6, N996PJ. The challenge here was to fit the fuel injection without modifying the original cowl. The RSA-5 fuel servo or FM-150 throttle body is 5.5? long, this would necessitate cutting off the existing snorkel and re-glassing the snorkel deeper to fit the longer throttle body with air box attached. This carbureted installation uses a MA4 carburetor which is 4.5? long. The project was to fit a mechanical fuel injection system on a RV that had the smaller 320 cowl.

AIRFLOW PERFORMANCE FUEL INJECTION MANUALS

I don't have manuals for the air box mod yet but will when and if any kits are sold. Well after mush work and a bunch of delays (not because of the project) we finally got it done.

AIRFLOW PERFORMANCE FUEL INJECTION INSTALL

A while ago I made comments about a project we were working on to install fuel injection on a RV using the smaller 320 cowl and not having to modify the cowl to make it fit.

Airflow performance fuel injection