I know of 3 stats for the RR...74, 82 and 88 degrees celsius. The 74 is
not easy to find. Don't know if it is 'tropical' - it doesn't open any more
than the others. On my Westfield (3.9 EFI) the factory fit a 74 with
6 x 5mm holes drilled in the outer flange. I don't know if this is to
increase flow or eliminate trapped air. Either way it probably does
no harm.
Check out http://www.stewartcomponents.com/tech_info.htm for the low down
on flowrates and restrictors.
Duncan
> From: Paul.Kile@Aerojet.com (KILE, PAUL D)
> To: buick-rover-v8@autox.team.net, "'mg-v8@autox.team.net'"
<mg-v8@autox.team.net>
> Subject: overheating
> Date: Tue, 27 Jul 1999 09:07:51 -0700
> MIME-Version: 1.0
>
> Someone mentioned a "tropical" thermostat for the Rover V-8, used in the
> Discovery and the Range Rover. Does anyone know if this is simply a cooler
> thermostat, or does it have a larger opening than the standard 'stat?
>
> I wonder about flow through the standard thermostat. I know that you can
> reach a point of diminishing returns when you increase coolant flow in an
> engine, when the coolant is moving too fast to transfer heat effectively.
> This can be the case for the BMC A and B series engines, which is why the
> factory issued a flow restrictor for competition use without the thermostat.
> But what about the Rover V-8? Does anyone have an idea as to whether the
> standard thermostat flow is optimal for hot climates?
>
> Cheers,
> Paul Kile
> in the middle of a painstaking restoration of a Factory MGB-GT V-8
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