water injection

[Barry E. King]

Agreed.

I have torn down engines with some carbon buildup, but they always ran
better after a rebuild than immediately before.

Some have suggested that the carbon buildup increases the CR thereby
creating more power.  While there may be some small increase in CR the
negative aspects of having hot carbon acting as ignition points in the
combsution chamber would surely decrease any benefit from slightly increased
compression.  In any case, carbon buildup is not a desirable engine
characteristic.  Also there would be a reduction of chamber volume which is
also not a good thing.  I'd rather have increased combustion volume and
lower CR than the converse.  [Cuz then I'd just toss a turbo at it ;)]


Regards,

Barry


> -----Original Message-----
> From: owner-diy_efi at efi332.eng.ohio-state.edu
> [mailto:owner-diy_efi at efi332.eng.ohio-state.edu]On Behalf Of Jim Davies
> Sent: Saturday, December 19, 1998 11:06 AM
> To: diy_efi at efi332.eng.ohio-state.edu
> Subject: RE: water injection
>
>
>
>
> On Fri, 18 Dec 1998, Barry E. King wrote:
>
> > I don't buy the coking deal either.  Eventually it will bring
> an engine down
> > power-wise.  Ring seating is more likely the reason for
> increased output.
> >
> Probably true, in my experience. If there is a perceptable increase, it
> seems to appear suddenly rather than gradually, thereby [IMO] pointing to
> ring seating. I have never observed any carbon build up on any engine I
> have used and then torn down.
>
>
>