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RE: exhaust note

To: "Navarrette, Vance" <vance.navarrette@intel.com>
Subject: RE: exhaust note
From: "Robert M. Lang" <lang@isis.mit.edu>
Date: Thu, 16 Jun 2005 10:02:33 -0400 (EDT)
On Wed, 15 Jun 2005, Navarrette, Vance wrote:

>       Jeff:
> 
>       I always assumed it was because of the under square engine
> design (stroke is longer than
> the bore is wide). Maybe somebody else knows otherwise.

It's all that and more. It's the whole package that makes it sound neat.

>       Over square engines (Bore is wider than the stroke is long) have
> a completely different sound.
> The duration of the cam makes a difference too, I would imagine.

Compression matters too. The over-run sound on a 12.5:1 TR6 is way kool.

:-)
 
>       Vance

rml
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