Date:         Sun, 16 Jan 2000 07:11:24 +0100
Reply-To:     Per Lindgren <lindgre@ONLINE.NO>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Per Lindgren <lindgre@ONLINE.NO>
Subject:      Re: Engine management (manual control of mixture) A new angle...
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David Utley wrote:

> Part of the reason why you have more power then is the reason why dragsters
> only start their car just before the line, and push the cars up to it.  Cold
> engines make more power, as the air density is higher, and you have more air
> to assist that extra fuel.  This won't help when the engine is warm.

I do agree that the cold air fills more than hot air; that is why many turbo
engines have intercoolers, to cool off the air that is heated by excess heat from
the turbo which is driven by the exhaust pressure.

However, I would rather think that the reason drag cars run off with cold engines
is that they usually don't have any cooling system, to save weight. This
prohibits them from running warm engines. Many of the dragsters featured in the
VW mags does not have cooling systems.

PerL
87 Syncro 112i