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Re: [T3] Type engine longevity


<x-charset iso-8859-1>Hello-

> Straight through does not always promote flow.  

*very slight* correction... Straight through does not always promote 
_performance_.

Putting a piece of pipe on a bench and testing "flow" with a constant 
airstream is different than putting it in an environment where it sees 
pulsed flows and contributes to exhaust scavenging.

But, you are correct that straight through isn't always the best.

Case-in-point: if you look at a lot of small engines (small bike stuff 
and whatnot), you'll see some funny cone-shaped mufflers.  They are 
expansion chambers, and are designed to increase the resonating effect 
of pulses for exhaust scavenging.  They _make_ power!  Some car racers 
adopted this idea for their vehicles.  I have one on my T3, too :-).

Take care,
Shad Laws
LN Engineering
http:/www.LNengineering.com

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