exhausting issues

[gjkscruggs]

    >>
    >> Bell states in his exhaust system chapter on page 132, " 'The larger
the
    >> better' is not the case."  He also includes a table, 11-4 on page
133, where
    >> he shows the recommended exhaust system diameter for a given
horsepower.  He
    >> shows that a 3" exhaust system is ideal for the exhaust flow of a
700hp
    >> engine.  Not since the factory raced these cars has that number been
    >> mentioned... and they essentially didn't have an exhaust system.

    >Is this 3" system for a 700hp engine a dual exhaust or a single?  I can
picture Corky
    >talking about V8's by default.

Looking at the chart again I can verify that he is talking of a single tube.
He does include a second scale for diameters of dual pipes.  The dual
equivalent of a single 3" tube is a pair of 2 1/8" tubes.

    >> My 2 1/2" system is good for 450hp so there is little danger that
I'll out
    >> strip it's capability anytime soon.

    >Unless it is a dual exhaust?  Then you might be less efficient than if
the exhaust was
    >larger?

For reasons of chassis clearance, packaging and such duals are a valid
consideration... I'm thinking two parallel tubes still exiting the left
side.

Regards, Gross Scruggs