Horn #119

From: Jay Laifman (Jay_Laifman(at)countrywide.com)
Date: Wed Feb 03 1999 - 15:15:51 CST


Got the SAOC Horn the other day. By the way, if you are on this list, and
you are not an SAOC member, you really should be. Especially now that it
is so easy to pay through Tom (at least for us US folks).

Anyway, the cover picture is really neat. The picture is of two Alpines on
the "Shuttle" which crosses the English Channel. I've never been on this
transportation. But, it appears as though you drive right into a train
with your car and sit with your car as the train travels. The interior
looks like a large bus, with finished walls and advertisement posters. Our
heros in the picture are setting out a picnic on top of the trunk of a
SI/II with a plaid blanket. It looks oh so inviting. The story inside
related to the picture is of four couples who take their three Alpines and
one Rover (Alpine got sick) for a trip to France.

Also in the Horn is an article called "Technical Tips: Not Going Holbay."
He makes an argument why "bolting on 2 40 DCOE Webers" on an otherwise
standard engine will not produce any startling results" based upon carbs
being too big so that velocity of air will be too low. While this may be
true for any carb being too big at low RPM's, Webers are infinitely
adjustable and can be made to be the correct size. Also, it is not true at
high RPMs and in fact the better breathing Weber is better at high RPMs.
Instead of Webers, superchargers or wider cams (which he also dismisses
because of low rpm power loss), he suggests other means of getting more air
velocity into the carbs by creating an air ram that uses a 4" tube to
collect air in the front of the car and ram it into the air filters. He
uses this with a 28/36 Weber down draft. He guesstimates that the ram
alone will boost his hp by 12 bhp.

Jarrid, your thoughts on this side of the pond? It seems to me that the
air ram is also useless until the car gains momentum and air is being
rammed into the tube. Maybe the better idea is to have both Webers and the
ram.

Jay



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