Aint no way any Volvo or VW thermostat will work then. The 120/140 series
t-stat is visually like the stag t-stat, and the VW item(rabbit/golf etc.
is very sim. but not interchangable with the Volvo unit. My guess is that
the stag unit and the volvo unit might interchange, but the final
determination will have to wait a bit.
Thanks for the good work Tony
Don Boyd
----------
> From: Tony Rhodes <ARhodes@compuserve.com>
> To: Don Boyd <dbji@whidbey.net>; INTERNET:triumphs@autox.team.net
> Subject: RE: bypass hole block, now thermostat size
> Date: Tuesday, August 25, 1998 12:47 PM
>
>
> I don't have one to give you, but I DO have some of the critical
> measurements.
>
> Skirt Diameter 1.930 (inches)
> Skirt length 0.400 (this is a replacement, non-TR type)
> Flange diameter 2.125
> I.D. of housing (at level of skirt) 1.975
>
> Flange to bypass hole (in housing) 0.360
> Bypass hole width (in housing) 0.345
>
> The original thermostat opens "backwards" and the skirt which
> is on the engine-side of the bypass hole when cold, moves toward
> the radiator and covers the hole when hot. The replacement type I have
> info
> about works the normal way, and the skirt is up tight against the flange
> when cold, and moves toward the engine and covers the hole
> when hot.
>
> Let me know if you have any other questions. I have limited info about
> the original part, but I have a TR4 housing sitting here in my hand.
> There is quite a bit of room on both sides from the flange for
> non-standard parts to fit. The critical measurements I gave you.
>
> -Tony
> __________________________
> >Date: Tue, 25 Aug 1998 00:20:53 -0700
> From: "DON BOYD, JOAN IKOMA" <dbji@whidbey.net>
> Subject: Re: TR2/3/4 - Blocking the Bypass: hole or not?
>
>
> 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.
> <
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