Yep, realised that after I had sent my message about 1500's heaters.
That's what comes of reading a long E-mail list from the wrong end !
Sorry all !
Guy
----- Original Message -----
From: Hanna, Mark <mhanna@ball.com>
To: 'Guy' <Guy@weller-lakes.freeserve.co.uk>
Cc: <spridgets@autox.team.net>
Sent: 06 May 1999 20:52
Subject: RE: Heater Control Valves
> Hi Guy ,
> I believe they are talking about "A" series engines here .
> Mark Hanna
> AN5L/13731
> > -----Original Message-----
> > From: Guy [SMTP:Guy@weller-lakes.freeserve.co.uk]
> > Sent: Thursday, May 06, 1999 11:54 AM
> > To: wizardz@maxinter.net; Jeff Boatright; spridgets@autox.team.net
> > Subject: Re: Heater Control Valves
> >
> > Just checked out my (UK spec) 1978 1500.
> > The heater circuit seems to have little to do with the circulation of
> > water
> > to the block or head and I can see no way that it should effect the
> > cooling
> > effect to any individual cylinder.
> > First there is a cicuit from the thermostat housing at the front of the
> > cylinder head, through the heat exchange set up for the carbs (SUs) and
> > back
> > to the water pump. This operates all the time, flow being controlled
only
> > by the thermostat valve which will help with quicker warm up of the carb
> > inlet manifold in cold condtions.
> > The heater circuit is a sub-circuit off this, and has no direct
connection
> > to the block.
> > There are two "T" connections to the inlet manifold heater pipework,
both
> > near the rear of the engine, with a valve in this to close it off when
no
> > heater is required. When ther valve is open the water supply must be
> > shared
> > between the manifold and the heater core. The circuits are in parallel,
> > not
> > in series.
> >
> > Guy
>
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