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An intake manifold ensures air coming into the system is evenly distributed across all the engine’s cylinders. An exhaust manifold is the first part of a vehicle’s exhaust system and functions as a funnel to collect all the engine's emissions and burn away any excess engine gasses. This is also the location of the oxygen sensor, which sends signals to the intake if the engine is not receiving the optimal fuel/air balance. If a manifold is damaged, exhaust gasses could leak into the vehicle and result in an unsafe environment for the vehicle’s occupants.
Manifold Insulators are attached to the manifold to ensure a more secure seal. This prevents any air or gasses from leaking and helps avoid speed fluctuations caused by the uneven motor running. An insulator also helps limit the transfer of temperature, keeping the engine running hot while preventing other systems from overheating.
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Manifold Kit, 390 Carb to GX200, 6.5 Chinese OHV, & 212 Predator, 15 Degree Mount
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 "Flat Mount Adapter Kit" must be added (sold separately). Part Number NR-390FLATADAP.
Typically requires a 108 Main Jet for std bore GX390 carbs and 110 for 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
Manifold Kit - 390 Carb to GX200, 6.5 Chinese OHV, and 212 Predator
Contains: 15-degree manifold, pulse fitting, plug, 2 x M6 x 20mm bolts, 390 carb gasket, flat adapter kit
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 (Not Included) between the two.
Install the carb studs in appropriate holes, mount carb using enclosed gasket, and go racing.
Add-On Manifold Adapter - Zero (Flat) Degree
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 who already have the 15 degree manifold. Includes hardware.
Intake Manifold for Mikuni 22mm Carb to GX200
Intake Manifold, Mikuni 22mm carbs to GX200. Also adapts GX390 and most flanged carbs.
May be natural aluminum finish or black anodized depending on availability (usually these are black)
With pulse fitting to run fuel pumps
24mm Flat Slide Mikuni (and 24mm Keihin) to GX200 Intake Manifold
.Stub is 1.25" OD, 1.135" ID (Blended to D-Shape) x 1.45. Overall Length is 2.19".
Includes pulse fitting and block off plug.
May be natural aluminum finish or black anodized depending on availability (usually these are black)
Intake Manifold for GX390 Carb to GX200
Does not require insulator plate.
Includes pulse fitting for Fuel Pump.
Typically requires a 100 main jet for standard bore gas GX390 carbs, and a 102 or 105 for gas bored carbs. Methanol carbs will need a 150-160 main jet.
May be natural aluminum finish or black anodized depending on availability (usually these are black)
Intake Manifold - Mikuni 22mm Carb to GX200
Also adapts GX390 and most flanged carbs. Short Style.
May be natural aluminum finish or black anodized depending on availability (usually these are black)
Mikuni 22mm Carb to GX200 Intake Manifold
Also adapts GX390 and most flanged carbs.
Manifold does not have pulse fitting. If you need a pulse fitting, order MAN-LG-PULSE
May be coloured aluminum finish or black anodized depending on availability (usually these are black)
Mounting Hardware for NR Carb Adapters
Mounting Hardware for NR Carb Adapters. Includes all the bolts, nuts, and washers needed to mount the carb to the manifold, and the manifold to the engine.
This is for the NR Racing Long intake that does not require an insulator
Manifold, Tillotson to GX200, 6.5 Chinese OHV
Intake Manifold for Tillotson to GX200, 6.5 OHV, and 212 Predator.
45 Degree Curved Steel Manifold
Steel Intake manifold to mount Mikuni 22mm carbs to GX200. Manifold is curved to allow carb to face rear.
This is the economy version with a round flange (instead of D flange).
Manifold is meant to fit the genuine VM22. It will work on the Chinese versions (small body), but there will be slight misalignment and may require some silicone or gasket maker for proper sealing.