In the Horn article mentioned by Dick Sanders, the author made the
argument that a fully uprated Holbay Alpine would be faster and handle
better than a Tiger, given the 400 less pounds and better weight
distribution. As a result, the Holbay Alpine has greater horsepower per
pound. All that being said, I'm sure a Tiger with similar upgrades would
not bother looking back at the Holbay Alpine. As to the smaller intake
holes, I reopened and polished the holes, along with the manifold, to
properly match the Webers. We changed the jetting to fit the Webers to
fit the engine. Altough jetting Webers is a life-long project, I have to
say I have no complaints yet (I'll let you know what happens when the
barometer changes).
In response to Dick Sanders' correct comment about whether the
lightened flywheel came on the Holbay car, I should clarify my previous
comment about my Holbay upgrades. I listed many of the changes I made to
my car, not all of which were Holbay based. To further set the record
straight, I have new Webers (40 DCOE 151's) which are upgraded from the
ones available for the original Holbay H120 cars (I've been told that the
only earlier Webers one should use are the 40 DCOE 18's - which may even
have a better idle circuit). I was not able to obtain the original
distributor, so I had my original weights and springs replaced to make the
distributor a mechanical one. The Bosch coil, the electric ignition, the
larger radiator, and the fuel pump are new and I have no knowledge of what
Holbay used (I got the fuel pump - and new master cylinder - from Pegasus
Racing). Additionally, the flywheel and engine were dynamically balanced
-- which I would most definitely suggest is crucial if one is to undertake
such modifications. I also had the crank and other parts "Koolcased"
(similar to "Tuftrided"), which hardens the surface.
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