Rino Lacombe wrote:

I have a question about the throttle body for Tracy and others.
The information I have is the following:
The 2 primary intake runners are 1.25" dia.
The 2 secondary intake runners are 1.77" dia.,  I find a total area of
5.89 square  inches.

The throttle body has 3 (venturi) of 1.77" dia, I find a total area of
7.38 square inches.
The equivalent (venturi) would be 3.125" dia. for a total area of 7.38
square inches.
Question: Do I really need a throttle body that large? (3.125" dia.)
The pipes to and from the intercooler are only 2" dia.  Is there a
reason to have the throttle body
that much larger than the pipe (2") that feeds it?  -- The bigger the
heavier.
Would a 2.55" throttle body be large enough.
Thanks
Rino

 
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