Re: Methanol- corrosive?
Its definitely corrosive. If you're running 100% methanol, you need to make sure that your fuel system is compatible. Aluminum doesn't like it. Most natural rubber doesn't like it, but most of the synthetic rubber products (Buna-N, Neoprene, PTFE) will do just fine.
If you're running a low percentage (like 10% or less, balance gasoline), you shouldn't have to worry about the fuel system.
The internal components of the engine aren't really all that critical. Yes, certain parts, like the inside of the intake manifold and such, will be exposed to methanol (if you're using a boost cooler type system) but its not the constant exposure to liquid (which is what causes the corrosion damage) that you'd find in fuel system applications. So, no real worries there.
Really, the only concern is for guys running high concentrations of methanol in the fuel as an octane booster (or running straight methanol) is fuel system integrity. O-rings, fuel lines, fuel rails, etc. Gotta check compatibility if that's what you're doing.
'JustDreamin'