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Re: High Speed Problem

To: "Nolan Penney" <npenney@mde.state.md.us>, <spitfires@autox.team.net>
Subject: Re: High Speed Problem
From: Douglas Braun & Nadia Papakonstantinou <doug@dougbraun.com>
Date: Wed, 22 Aug 2001 09:57:34 -0400
At 09:19 AM 8/22/01 , Nolan Penney wrote:
>I would not expect vacuum advance (or lack of) to cause high speed/high rpm 
>problems.  
>This isn't the range that the range that the vacuum advance works in.  This is 
>the 
>arena of the centrifugal advance.

Indeed.  At full throttle, you have no vacuum, thus no vacuum advance.
The purpose of vacuum advance is mainly to give better
part-throttle efficiency and fuel economy.

For example, the vacuum retard on a circa '72 car works only at idle
and has no effect when actually driving.

Doug Braun
'72 Spit

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