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> Isn't methanol what "alcohol" dragsters burn. IIRC it does burn very hot. > Some of them have water injection to cool the engine. In the combustion > chamber the water droplets boil to steam, which uses up a lot of thermal > energy (latent heat of ... er ... vapourisation?). > I think the water injection uses the heat of combustion to turn the water to steam, which expands in the process and exerts a force on the pistons over a longer time, thus being able to use much more fuel than the engine could handle without the water injection. Dave. UK VW Type 3 & 4 Club http://www.hallvw.clara.co.uk/ ------ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~