Just last night, while working on our '61 Fury (wide block 318, also known as
the "poly" 318, also known as the "A-Engine") I noticed that the bypass, a 1/2"
hose, is not blocked, but recirculates all the time. The cooling system is
sized such that the bypass is taken into account. Your 1/4" hole in the bypass
route has worked in a number of cars I've owned.
Bruce Clough
62 TR4 & Exner era Mopars
> All most all cars have some sort of bypass. Many american cars have water
> circulating through the heater core all the time. Most import cars deal
> with it with a bypass hose, but there are some exceptions. Some dont have
> anything to circulate the water when warming up, but mostly this is poor
> enginering. Some companies anticipate where the hot spots would be and put
> aditional material/larger water jackets there. They figure the heads won't
> crack until the warantee runs out. ;-)
> I think the 1/4 hole in the bypass tube is the right solution. If someone
> will send me a defunct Tr 3 bypass cutoff type t-stat, I'll tell the list
> if any Volvo / VW ones will work.
>
> Don Boyd
> 3 Triumphs
> BMW/Volvo?VW shop owner (now retired to Whidbey Is. Wa.)(not really,
> there's a woman at the bottom of this....)
>
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