An expansion tank is the way to go--plumb a fill line to the radiator and
a bleed line to the high point and your system will self-bleed.
-----Original Message-----
From: Larry Young [mailto:cartravel@pobox.com]
Sent: Saturday, May 03, 2003 3:12 PM
Cc: fot@autox.team.net
Subject: Re: Radiator Plumbing Question.
Thanks to everyone that replied. There are multlipe solutions to this
plumbing problem. Using 1 1/4 inch copper tubing is one solution. I
also found hoses that would work in a Gates book at the auto parts
store. There was a 1 3/8 x 1 1/2 hose that could be cut in half to give
the reducing 90 degree hose that I need. I also found 1 3/8 in tubing
in the Aircraft Spruce catalog. Dean Tetterton also suggested using a
TR6 water outlet, which points to the side. I don't know how you would
install a thermostat with TR6 outlet though. With the TR3 there is also
the issue of filling. There is a neat combination water outlet/filler
neck for Chevys, but they don't appear to bolt on our TRs. There are
inline filler necks available, but that would put the filler pretty low.
I'm thinking of filling through a firewall mounted expansion tank,
which I will connect to the heater take off and return points. Comments
and suggestions are welcome.
Larry
Larry Young wrote:
>After the previous discussion on cooling, I decided to install a larger
>radiator in my TR3A. I'm using a commodity crossflow radiator, which
>goes across the entire opening between the fenders. I've got the thing
>mounted, but I'm having trouble with the plumbing. The radiator inlet
>is 1 1/2 inch and the outlet is 1 3/4, which are standard sizes.
> However, the Triumph pump inlet and engine outlet are 1 3/8 inch, which
>is an odd size. Hoses are available in 1 3/8, but I can't find tubing
>with 1 3/8 O.D. I was thinking that if I could find exhaust pipe in 1
>3/8 inch, I could have the ends of it expanded at a muffler shop. Does
>anyone know where I can find pipe or tubing in this size?
>Thanks,
>Larry Young
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