<VV> Squish area article in Pop Sci mag -Long -little
Thu, 19 Aug 2004 12:13:47 -0700
The article is opnline.
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> Subject: <VV> Squish area article in Pop Sci mag -Long -little Corvair
> Sorry for the double post on VV and FV, but I would like to
> here as many opinions on this as possible.
> This is a very interesting article.
> For those interested I'd go buy the sept 2004 issue.
> Since some of our Corvair engines seems to have
> pre-detonation problems I read this with interest. After
> reading I wonder if modifying some 110 heads this way
> wouldn't be an intriguing test.
> What this fellow's doing seems completely wrong. He is
> cutting a series of grooves in the combustion area in the
> head. His thoughts were to cause even more turbulence then
> just having a squish area. They've got pictures in the
> article showing some of the modified heads. I don't know how
> the heads are not detonating all over the place.
> He apparently has been trying for years to get some one in
> the automotive industry to notice his work. Usually he just
> gets blown off, but he finally got permission from an engine
> manufacturer to test his work on a dynamometer. The only
> engine manufacturer that would allow him to do the tests was
> Briggs and Stratton.
> Apparently its very hard to get this kind of thing done in
> the middle of India, that's where this guy's from.
> The fellow got his data back and and in the article claims
> the data says that from 2000 rpms to 2800 the modified engine
> used between 10 and 42 percent less fuel and yet seemed to
> have no appreciable loss in torque or power then an
> unmodified twin motor running the same tests.
> I bring this up because we usually try to get any sharp or
> semi sharp edges out of our Corvair heads. Some of the
> grooves this guy cuts into the heads are in a radial pattern
> emanating from the spark plug area.
> Is there a peculiarity in the Corvair heads or engine that
> causes them to detonate more frequently then newer cars or is
> it just a compression problem.
> Very cool article!
> [demime 0.98e removed an attachment of type image/jpeg which
> had a name of cash face.jpg] Cash Case "Some people are like slinkies.
> They're not worth much,
> but you can't help but smile
> when they tumble down the stairs!"
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