[Diy_efi] Water metanol turbo assist

[Greg Hermann]

At 12:31 AM 1/10/03, Mike wrote:
>yes I remember a british pilot saying they used water injection
>(at quite a high rate) on the spitfires (1942), but they said it was
>only reserved for emergencies and a log needed to be kept of
>how often it was used on a particular engine, anyway the pilot
>said the effect was dramatc - made a big improvement to engine
>output power ! I guess thats not normal WI then,
>
>rgds
>
>mike

Water is heavier than petrol, and I would all but BET that they preferred
to put the extra weight in ordnance rather than better engine performance
--EXCEPT-- in emergencies !!

Greg
>
>
>
>At 11:13 AM 1/9/03 -0500, you wrote:
>>The SAE published a book by Graham White on WW2 Allied Aircraft piston
>>engines.  In it he talks a bit about oil filtration,  they sure were not
>>using spin on cartridge filters.
>>Some applications used engine driven centrifugal filter.  Their filtering
>>requirements included dealing with Aviation gas injected into the oil
>>(lowers viscosity) before engine down so it would be easier to start up in
>>the cold.  ADI (water/methonol injection) was only for perfomance
>>enhanement, to lift an over loaded bomber or help you out run someone who
>>was shooting at you.



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