2.5L Iron Duke MPFI conversion.

[Shannen Durphey]

That 4 cyl engine that Smokey built was really something. 
It was an idea along the same lines as the "100 mpg
carburetor" articles that appear from time to time.  But
Smokey's approach was a bit different.  Instead of trying to
heat gasoline then introduce the resulting vapor into the
intake charge, he drew fuel and air into the engine together
then applied heat.  The intake charge was kept under
pressure to prevent the expanding fuel from displacing the
air that was with it.  The engine ran at some incredibly
high temperatures and made 3 digit hp numbers.  IIRC, the
test vehicle shown in the magazines was a Fiero.  

Shannen

Bruce wrote:
> 
> > I'm playing catch-up with the group and I have a little input on this
> thread
> > because of the death of Smokey Yunick this past weekend.  In the early
> > '80's, Smokey was doing research on what he called the "Hot Air Engine".
> It
> > was the kind of work that a group like this would really appreciate.  I'll
> > save the discussion of his technique later, but engine that he used in his
> > research and fabrication was no other than the Iron Duke (151 cid) is
> > relevant.  He chose the Iron Duke made by Pontiac because he wanted to use
> a
> > 4-cylinder engine and, although not widely known, the Iron Duke was the
> most
> > successful engine in automotive racing history (at the time).  I don't
> know
> > where he got his information, but he is (was) one of the most respected
> > engine builders and have no reason to question his facts.
> >
> > Also, there is some confustion about the 301 and it's history.  From what
> I
> > understand, the Iron Duke was the basis of it - not the other way around.
> > Pontiac liked the success of the Iron Duke and they believed they could
> make
> > an awesome V-8 by simply doubling it.  They weren't modifying a Pontiac
> 350,
> > but a 151 (yes, the math works out that it should be a 302, but I suppose
> > that Ford and Chevy already had a 302, so they called it a 301).
> >
> > This engine might be a very good engine to play around with for efi
> > projects, especially if you wanted to run a turbo.
> >
> > Incidently, I owned a '79 301-4V in a Firebird with a 4-speed and had much
> > fun.  I outran many a Camaro with a 350 and auto trans.  I still have one
> > sitting on an engine stand.
> >
> > Joe
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