water injection

[Jemison Richard]

A good point but I also don't know any F1 cars that make 1000 miles before
an overhaul either (or atleast a teardown / inspection - cleanup).  And
waterinjection is heavy.  Actually, it was used by one of the automakers in
the early 60's but didn't go over with the consumers.

Rick

> -----Original Message-----
> From:	Pedro Haynes [SMTP:edwards at mail.sunbeach.net]
> Sent:	Friday, December 18, 1998 12:51 AM
> To:	diy_efi at efi332.eng.ohio-state.edu
> Subject:	water injection
> 
> 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
> >>   >>
> >> 
> >
> >
> >