I thought I would make a post to clear up the incompatibility issues with brass and its use in an alcohol injection kit. This is something we ran across well over a year ago. Just finally getting around to putting it down for others to use.

Brass, while considered chemically compatible with methanol and water by themselves, can have a chemical reaction with the methanol/water mixture when used in an alcohol injection system. The chemical reaction happens when the methanol/water mixture combines with the air bubbles and travels threw the system. This reaction can create a white ashy build up that can generally be found on the low pressure side of the system. This problem is simlar to how dexcool reacts in gm engines when air gets into the systems. This can usually be seen in the pump, pump inlet fitting, and the fitting in the holding tank. It is usually not as prevalent of a problem on the high pressure side of the system because of the increase in pressure here.

This is the reason the majority of the alcohol injection companies use nickel platted brass and composite fittings though out there systems. Some companies even use plated nozzles to remove non coated brass 100% from there system. But will remove the chance of build up in the system. Thus, if less non brass is used there is less chance of the white ashy buildup.

Now, if you have non coated brass in your system the world is not coming to an end. If you are aware of the problems with brass then preventive maintenance will keep you out of trouble. I would recommend cleaning the filter in your system every three months. Also, it would be a good idea to take your pump apart to clean the valves, seals, etc at least once a year. You can also just remove the non coated brass parts from the system, and have 1 less worry.

 

im not trying to be ignorant...but seriously why cant all of your threads be combined into one?