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I have done a little experimenting with it on a chassis dyno. Not enough to prove anything. Don't have the time to really pursue it but here's what I suspect: on applications where timing has to be retarded to supress detonation it may offer an advantage. That is to say it will allow optimal timing by raising the resistance to detonation. The experimentation was on an LT1 with the knock sensor enabled. It appeared that the knock sensor was retarding the timing less with water using 89 octane unleaded swill. There was less retard and more hp with the water.
The LT1, in case not everyone is familar, is a "gen 2" SBC . Just like gen 1 but with an optical distributor and relatively high compression with reverse cooled aluminum heads. It is prone to detonate even on premium unleaded and therefore has a pretty aggressive knock sensing circuit.
BTW: the injection fluid used was a 50:50 water:methanol mixture.
Richard
Last edited by rskrause; 10-12-2007 at 02:41 PM.
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