Re: [DML] Re: Engine Mods

[Don Ekhoff <ekhoff@xxxx>]

Jim,

In Idaho we have two formulatons readily available. Mostly water and 
mostly alcohol. I don't remember the exact ratios off hand as I am in 
Calif. right now, but the higher alcohol offering (more expensive and 
rated for lower temperature resistance to freezing) provides both 
evaporative cooling and hydrocarbons to add to the fuel load. It really 
works well. In Florida I would doubt the higher alcohol formulation is 
available as you don't need protection down to -40 degrees F. If I 
inject water only I get the dreaded 'lean on full boost' problem. With 
water only I stop firing at about 4# boost. It just goes "flat". In 
Calif. I have to buy Alcohol at Ace Hardware and spike the brew.

I monitor the intake manifold actual temperature and the harder I run 
the car the cooler it gets. Cooler means denser charge. It really cuts 
down on detonation as the higher octane rating of the alcohol combined 
with the water (steam engine effect?) and the evaporative cooling of the 
induction charge allows for higher boost with safety. Now if only I had 
ported heads and free flow manifolds! Probably will never catch a 'three 
rotor' but still fun to drive.

Don E
(Two turbo DeLoreans plumbed this way)


Jim Strickland wrote:

> Since when is windshield washer fluid "fuel"???
>
> ...
>
>
> > I was talking to an authorized Bosch mechanic with regard to my 
> > solution to
> > the 'lean at boost' problem. What I do is inject windshield washer 
> > fluid in
> > liberal amounts onto the turbo impeller whenever I am in positive 
> > boost. It
> > cools the intake tract as well as adding fuel to the fire. As well 
> > as it
> > works it would be nice to not need it.
> ....
>
>
> > Thanks,
> > Don Ekhoff
> > #6543
> >
> >
> >
> >
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