I've always been a fan of the Ardun, although I always figured it was a
little too exotic (read $$$) for me. How many Arduns are out there
today? Are they still being produced by somebody else and available new?
I assume that should I ever find a set at a swap meet, they have to have
a special intake too, is that available anywhere, or is a self-fabricate
item?
Just curious,
Dick J
--- ARDUNDOUG@aol.com wrote:
> Dave,
> The Ardun would have naturally helped the old Flathead at
> altitude,
> as it breathed much better than the sidevalve. That's the
> first I've heard of
> the theory that they were designed for use at high altitude.
> The Duntov Bros. didn't do enough R&D on the heads, however,
> and in
> their stock state they wouldn't produce anywhere near the 170
> HP that was
> advertised. Using stock Ford pistons, as the Ardun was
> intended to be a
> "bolt-on" horsepower increase, the resulting compression was
> about 6:1.
> Subsequent owners of the rights to the conversions offered
> pistons to
> dramatically raise the compression ratio.
> The single 2-bbl Stromberg 97 mounted on a crossover between
> the
> stock log manifolds couldn't handle adjacent cylinders firing
> one after the
> other, starving each other for fuel.
> In the 1950's, Don Clark & Clem TeBow (C&T Automotive)
> acquired a set
> and really got the potential out of them by some port
> massaging, compression
> raising, and fuel injection innovation.
> In 1992 we got a 50% increase in cylinder head flow by moving
> the
> ports and re shaping the bowls..............Ardun Doug
>
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