One thing that we have been discussing on the v8 list is that the area in
front of the windscreen is a high pressure area so is the air actually
leaving via the louvers or is it flowing in and creating airflow over the
otherwise stagnant top of the engine. Obviously air is leaving from under
the car or else the engine would quickly overheat. There seems to be some
conflicting information about whether air is flowing in or out of the
louvers / lifted trailing edge so at this point it remains an unanswered
question.
James Nazarian
71 MGB Tourer
71 MGBGT V8
85 Dodge Ram
----- Original Message -----
From: <ATWEDITOR@aol.com>
To: <mgs@autox.team.net>
Sent: Wednesday, August 20, 2003 9:12 AM
Subject: Re: airbox design
> In a message dated 8/20/03 3:44:45 AM, mvheim@studiolimage.com writes:
>
> << Maybe you could add louvers at the trailing edge of the bonnet,
encouraging
> airflow under the bonnet (since there is still plenty of inlet air through
> the radiator) and around or particularly below your airbox. My
visualization
> of your setup is that there is some sort of air gap between the bottom of
> your sealed air filter bottom plate and the top of the engine, so my
> suggestion is designed to encourage flow through this area, in order to
cool
> the carb. >>
>
> I think Matt is on to something here, since getting air in is only half of
> the battle. The more air you can get cycling through the engine
compartment the
> better. Matt's idea also is perfect if all of your problems are caused by
> insufficient air movement on the top of your engine. If, however, you
have heat
> issues below the valve cover level, you might consider some action to
> encourage air to exit below the engine. Remember how those ralley Healys
had vents
> embedded in the lower body behind the front wheels? Maybe other
approaches
> could be considered. This could be an issue, as the wide V8 can block air
> movement downward in ways the original engine never would. As Matt says,
lots of
> air is coming in the front of the car. The trick is to let it out, making
room
> for more to come in, etc.
>
> Jay Donoghue
> 72B-GT
> 66 Mustang
/// or try http://www.team.net/cgi-bin/majorcool
/// Archives at http://www.team.net/archive
|