RE: 2 liter Euro thermostat

[Hirsch <Catenary@xxxxxxxxxxxxxx>]

Bob McKeown wrote:
> A net-challenged friend is converting his '76 2-liter Spider
> from Spica to Webers and he's run into a couple of problems.
> He's using a European 2-liter carburetor manifold, which bolts
> up to the engine just fine, but there are a couple of detail
> differences.
 =

> This manifold apparently uses a different thermostat, probably
> a two-stage one. There's a bypass hole which connects through
> a hose about 3/4" in diameter to the water pump. The hole
> apparently gets blocked by the thermostat once the engine
> is up to temperature.

> Can anyone tell me whether the thermostat for this manifold is
> actually a two-stage design? =


Yes it is. Looks a bit like:
          _|_
         <___>
          _|_

> We also need to locate the bypass hose that attaches the
> thermostat housing to the water pump. It has several sharp
> turns and will be hard to substitute. We're also wondering
> if there is supposed to be a restriction orifice in the
> bypass hose.

I bought a "euro bypass" hose from Centerline Alfa a couple
of years ago. It doesn't have room in it for the bypass
restrictor normally found in the Spica cars.

> One more problem: the Euro manifold has no relief for the
> thermostat flange to sit in. The thermostat outlet we have
> is from a Spica manifold setup and has no relief either.
> Thus the problem: there's no place for the thermostat flange
> to sit without cobbling up some extra-thick gasket. Is there
> a different outlet piece for the Euro carburetor setup?

Based on memory and a parts book, I think the relief is supposed
to be cut in the manifold, not the outlet piece. Perhaps your
manifold was not finished correctly.

Good luck

Rich Hirsch
'87 Milano
'78 Spider  <- Spica
'67 Duetto  <- 1750 with Euro manifold and carbs
'66 Sprint GTV <- my Catdaddy car
Editor, i Saluti, St Louis AROC
Website: http://www.catenary.com/victor/isaluti

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