[alfa] Re:Quadraflows

[Alfajgt1@xxxxxxx]

In alfa-digest V9 #860 John Pike writes:

On the Quadraflow comments about finding the Spica box better.. I was 
curious where the increase was on that dyno run?  High end,  midrange?  (if 
you remember such details)

*********************************

If memory serves, the HP increase was somewhere in the neighborhood of 
5500-6000 RPM while power began tapering off once it got past 6500. This was on an 
Improved Touring, i.e., stock, engine with a .040 overbore. I can get the 
actual results, if needed.

Three or four HP doesn't sound like much, but does make a difference in IT 
racing where the cars are evenly matched and you're trying to pull that pesky 
BM* 2002 down the front straight. However, for racing, much can be done to 
improve performance just by removing unnecessary stuff from the car and getting 
down to minimum weight. Right, Richard?

I agree, it would be interesting to perform a series of dyno tests using the 
Spica air box and comparing stock vs. K&N filters with other intake systems 
like modified Quadraflows with custom air boxes. Intellectual curiosity (and 
money) aside however, I have to question the necessity to perform such 
modifications on street driven Alfas where one rarely winds it out to redline just to be 
able to get to the next stoplight.

Several years ago I took the advice of Wes Ingram and Tom Sahines regarding 
the modification of street-driven 2 liter Alfas and have been extremely pleased 
with the results. Low end and midrange power is greatly increased over stock 
which makes the car much more tractable for both highway and back roads 
driving -- not to mention passing slower vehicles on two lane highways.

As far as the Spica air box is concerned, I like it, it works just fine and I 
appreciate its originality. 

As John Hertzman is fond of saying, enjoy yours.

John Thompson
Sylmar CA
1974 GTV
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