Water Meth Nozzles

A water meth nozzle meters the water methanol mixture into the intake and breaks it into a fine mist. The pump pressurizes the fluid, and the nozzle's small orifice controls how much flows and how finely it atomizes as it sprays into the charge air, usually after the intercooler and near the throttle body.

That fine mist matters because small droplets evaporate quickly, which cools the intake charge and helps resist detonation on gas engines. On diesels, the same cooling effect is commonly used to help manage exhaust gas temperatures. The nozzle's flow rating determines how much fluid the system can deliver, so choosing the right size is one of the key tuning decisions in a water methanol setup.

Here are some of the key factors of Water Meth Nozzles:

• By flow rate. This is the main difference. Nozzles come in a range of sizes, from small nozzles for mild builds to large ones for high boost or high horsepower setups. Brands rate flow in different units (ml/min, cc/min, or gph) and at different test pressures, so compare carefully across manufacturers.
• By check valve design. Some nozzles have an integrated check valve that keeps the line primed and stops dripping or siphoning when the system is off. Others are plain nozzles that rely on an inline check valve or solenoid elsewhere in the system.
• By line fitting. Common options include push-to-connect fittings for nylon tubing, compression fittings, and AN fittings for braided lines on race setups. The fitting has to match your tubing size.
• By staging setup. A single nozzle covers most street builds. Dual or multi-nozzle setups add total flow, and with a staged controller the second nozzle can come in later at higher boost or load.
• By materials. Spray tips are commonly stainless steel for wear and corrosion resistance, with bodies in stainless, brass, or aluminum. All seals need to be methanol compatible.