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This is the adapter to covert NR Racings GX390 to 200 15 degree manifold to a flat mount. This is the adapter only and does not include the manifold. This is for customers and racers who already have the 15 degree manifold. Includes hardware
Designed to mount GX390 Type Carbs to GX200, 6.5s, and 212 Predators using 15 degree motor mounts. If using a flat motor mount, then NR Racings "Flat Mount Adapter Kit" (Part# NR-390FLATADAP) must be added (sold separately). Typically requires a 108 Main Jet for std bore Gas GX390 carbs and 110 for Gas Bored Carbs. Methanol carbs will need a 150 to 160 Main or larger. Pulse Fitting can be installed for operating fuel pumps, otherwise plug can be used to seal opening. NOTE: PULSE FITTING FACES UP Note: On some Long Duration (radical) cams, the intake vacuum signal is too weak to operate the fuel pump, esp when using methanol. In this case, you will need to pulse from the valve cover or block.. Contents: Manifold, Pulse Fitting, Plug, 2 x m6 x 20mm bolts, 390 Carb Gasket
Designed to mount GX390 Type Carbs to GX200, 6.5s, and 212 Predators. 2 pc design can be used on both flat and 15 degree mounts
Typically requires a 108 Main Jet for std bore Gas GX390 carbs and 110 for Gas Bored Carbs. Methanol carbs will need a 150 to 160 Main or larger.
Pulse Fitting can be installed for operating fuel pumps, otherwise plug can be used to seal opening. NOTE: PULSE FITTING FACES UP Note: On some Long Duration (radical) cams, the intake vacuum signal is too weak to operate the fuel pump, esp when using methanol. In this case, you will need to pulse from the valve cover or block..
Instructions:
Mount the 15 degree adapter (the thicker one) to Engine.
Mount Flat Plate adapter to the 15 degree adapter.
Use a small amount of gasket sealer between the two.
Install the carb studs in appropriate holes,
Mount carb using enclosed gasket, and go racing.
Contents: 15 Degree Manifold, Pulse Fitting, Plug, 2 x m6 x 20mm bolts, 390 Carb Gasket, Flat Adapter Kit
Intake Manifold, GX390 Carb to GX200. Does not require insulator plate. Includes Pulse fitting for Fuel pump.Typically requires a 100 Main Jet for std bore Gas GX390 carbs and 102 or 105 for Gas Bored Carbs. Methanol carbs will need a 150 to 160 Mainay be natural aluminum finish or black anodized depending on availability (usually these are black)
