[Rocket468]

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 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. This might be a little extreme because the nozzle is on the high pressure side of the 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.

[VR6T]

So is the pump simple enough to take apart? What filter are you referring too that should be cleaned once every 3 months?

[Sam Powell]

Yes, I looked for a filter in your parts list and could not find a filter listed. I assume you could combine parts to make connections to install a fuel filter in the low pressure line. Anybody done that? If nobody sees this here, I will repost eslewhere later.

Sam

[loch]

I run a simple fuel filter in the low pressure line, I change it every couple months. After two years theres been no worries.

[Rocket468]

With the brass in the system it can clogg a filter pretty quick. Using a filter is always a good idea.

[18tdesign]

So, a fuel filter between the reservoir and the pump? Interesting.. any particular filter to recommend?

[forcefed86]

Maybe DevilsOwn could come up with a push lock filter for us? It would sure make taking the filter in and out of the system to clean easy?