RE: Coolant Bypass Hose Restrictor AWOL

["Jim Steck" <4sfed@xxxxxxxxx>]

There has been more than one method used to control the 
coolant bypass.  One is the spring-loaded pressure relief
valve in the bypass hose, another is a double-acting thermostat 
with a disk on the bottom.  It moves down to block the bypass
port when the thermostat is open.  Used on the Alfetta
and still available, it eliminates the need for the in-hose 
restrictor.  The Master Parts P/N is 31278 - 180 degree, 
P/N 31279 - 195 degree.  

In a pinch, block of the bypass hose completely.  You'll notice 
that the Giulietta and Giulia engines didn't have any provision
for a bypass . . . with no ill effects.  The warm-up time may be
extended a little, but your engine will run cooler.

Regards,
Jim Steck


> I have found that the coolant bypass hose restrictor is missing 
> from my 77 Alfetta GT (2L USA car - actually a 2L CA car). Queries
> to both local Alfa dealers about obtaining a new one has resulted
> in my being laughed at. Once maniacally.
> 
> Any ideas where to locate one in good useable condition? Got one
> laying around in a parts pile somewhere that you'd be interested in 
> parting with (no pun intended)?

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