water injection

[Pedro Haynes]

Running a water injection system is a waste of time I must say. The only
thing it does is cool the combustion chamber and thus prevent detonation.
With proper intercooling, the right advance and sensable boost, (use
calculations), there is no need for water injection. Water injection is
about 20 steps back, do you know of any F1 cars that use water injection? 




>Running out of water on a water injection system will cause the engine
>to knock, so getting too much air  (and given the amount of air ithat
>most engines use, I really cannot see a hose of the size you would be
>using suppling enough  air to make any significant difference).
>Running out of water when you are using it to allow more advanced
>timing would be potentially fatal to your engine no matter how you do
>it.   Probably it would be best not to run out of water with any
>system, since the water pump will also probably pump air pretty good
>too.  Also the nozzles may limit the air soo much that there is not
>enough volume to worry about (of air).
>
>				Roger
>
>On Thu, 17 Dec 1998 TMead17327 at aol.com wrote:
>
>> Wouldn't there be a problem with leaning out when the water ran out?  It
>> doesn't sound very good to suddenly inject extra air into the manifold
without
>> telling the fuel system about it.  I guess it depends on how you measure
your
>> intake air (MAP, MAF, etc.)
>> 
>> Tommy
>> TMead17327 at aol.com
>> 
>> In a message dated 12/17/98 11:57:32 AM Central Standard Time,
>> rah at horizon.hit.net writes:
>> 
>> << 
>>  Here is an odd thought, what about putting the water in a pressure
>>  tank of some sort and putting compressed air over it.  Enough volume 
>>  of compressed air, and you should be able to maintain a fairly decent
>>  pressure until most of the water runs out.   You would of course have
>>  to air up after putting the water in, and probably put the thing in
>>  the trunk or someplace with a similar amount of room.  And probably
>>  you would need a pressure regulator on the water, or some way to sense
>>  the watter pressure, and adjust the nozzle PW to get the correct flow.
>>  
>>  			Just an odd idea
>>  			Roger
>>   >>
>> 
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