<VV> angled exhaust tubes

[Paul Fox]

I have seen angle exhaust on aircraft applications. I know they turn those engines slow at least the engines without the gear reduction. Looking at the stock flow numbers on American Flat Six I can see why you might still want better flow. 
Paul Fox

--- On Thu, 11/29/12, Bryan Blackwell <bryan at skiblack.com> wrote:


From: Bryan Blackwell <bryan at skiblack.com>
Subject: Re: <VV> angled exhaust tubes
To: "John Lucke" <jryonlucke at gmail.com>
Cc: virtualvairs at corvair.org
Date: Thursday, November 29, 2012, 9:32 PM


I don't know directly, but I do know that I don't see them on engines that are built to stay below 6000 RPM.  I'd guess, based on other data (like cams, air filter, etc.), that they don't really buy much below 4000.

--Bryan

On Nov 29, 2012, at 4:45 PM, John Lucke wrote:

> Any body know at what rpm level angled exhaust tubes begin to make a
> difference?  Low exhaust pressure is always good, but would it make a
> perceptible difference on the street?

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