<VV>lower shrouds (was Fan HP)

[Mark J. Murphy]

For any control to be fully effective it has to be able to work against both
outside ends of the desired range.  It is possible to over cool an engine,
just as it's possible to over heat one.  The engines run "happier" when kept
in a certain temperature range.  The thermostats are there to provide that
control -- shut when the temps are too low, open when too high.  Removing
the shrouds removes that control on the low end and while it does boost the
cooling, in some cases it can cool too much with no way to bring the temps
up.  That said, I haven't had lower shrouds on my turbo/PG 'vert since I
built it and I'm happy with the results, but I run a manual choke, blocked
heater ports, and its purely a summer car so the thermostats would be all in
all (99%+) of the time anyway.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      ,-----___\----,    Mark Murphy
      \--(o)----(o)--'  Derry, NH, USA
    http://m.j.murphy.home.comcast.net/
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


----- Original Message ----- 
From: "Stephen Upham" <contactsmu at sbcglobal.net>
To: <virtualvairs at corvair.org>
Sent: Sunday, June 26, 2005 4:56 PM
Subject: Re: <VV>Fan HP


> If the engine runs cooler without the lower shrouds, then why did the
> Gen. install them on every car.  I'm not trying to be a horse's patute,
> I really want to know what the down side (if any) might be of running
> an engine without the shrouds (assuming that I ever get my 110 together
> and running again).