Barrie,
Maybe the aluminum rad had much more capacity. My money is on the mechanical
fan. Most electric fans cannot do what a mechanically driven fan can do,
airflow-wise.
I, also, use a mechanical fan (& a stock MG V8 rad & block huggers). My
stock twin electrics never come on either (okay, except if it is 90+ F & I'm
at a looong line at Hardees, which is much slower than McDonalds).
I could be wrong, but I attribute most of the overheating issues to those
trying to use only electric fans. It can be done with more radiator, a BIG
electric fan, & louvers (and/or fenderwell exit headers).
Anyway, it ain't just the radiator.
Carl Floyd
Wide open in TN :)
----- Original Message -----
From: "Barrie Robinson" <barrie@look.ca>
To: <mgb-v8@autox.team.net>; <mgs@autox.team.net>
Sent: Tuesday, September 20, 2005 3:57 PM
Subject: Aluminium radiators
> While reeling in ecstasy because my MGB GT V8 just flew down to the BIG
car
> show I still have this nagging ":the engine bay could be cooler when going
> slow" thought. While at the show I spoke to Keith Childs he of mechanical
> fan (electric back-up which he says never comes on) and aluminium radiator
> fame. He reckons that the ally rad is the reason for his machine
> running so cool. So can anyone tell me just exactly how much better an
> aluminum rad is. I see that the coefficient of thermal conductivity for
> aluminium is half that of brass. My rad is the D&D one which I believe
is
> brass. Are the pipes bigger, thinner, more or what?
>
>
> Regards
>
> Barrie Robinson
> barrie@look.ca
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