Merits of water in a mainly methanol mixture?.

[maxc]

Originally Posted by djuosnteisn

After reading other threads on this forum, i think i have a fundamental misunderstanding.

Some people speak of the methanol as the main agent for octane boost, and the water as the main agent for cylinder temp reduction. But in my mind, the cooling effects of water would increase the effective octane, right? Less chance for knock = higher octane?

I've been reading that just water is good for 10 too 20 octane points higher.
I have run very lean fuel mixtures and very high compression with just water.
The trick is getting the too "mixed" before they reach the cylinder.