Thanks to all who offered help with my overheating Tiger.
Unfortunately, I had already purchased an alloy rad from a California Tiger
owner, so I couldn't take advantage of many suggestions
to recore my stock rad.
I had also purchased a Miloden "stock replacement" water pump, and some
other goodies including an 11" electric pusher fan, a plastic 14"
ridgid 4-blade fan and a thermo with manual over-ride switch kit and a
relay.
I had a h*ll of a job to get the 3/4 inch thicker alloy rad into the car.
The bottom of the rad interfered with the steering rack, and above it
contacted the
end of the Miloden water pump shaft. Against advice and perhaps better
judgement, I was able to move the lower end of the rad mount about an inch
without distorting anything important or visable, which allowed the rad to
slide down in front of the rack. But the new water pump was just too much
longer to safely squeeze into the
available space. So I refitted my original pump, which in fact is in pretty
good shape, and gave me the clearance I need.
I installed the new 14" fan, and measuring the distance between the blades
and the steering rack, there is no way I could put a 15" fan in there
without contact. So it \
looks like my engine is lower than spec as has been suggested by some of
you, with a recommendation to slide some washer-shims into the engine mounts
to gain back some height. Maybe this winter....
The electric pusher fan went in like it came from the factory, as did the
switches, wire, relays and wire harness. They work also, like gangbusters.
The original shroud even went back in, although I have left the recommended
fabrication of a piece to close the loop on the shroud to 360 deg of
coverage, also until later.
The result?
Awesome!
I have been road testing the new set-up for about three days, and have yet
to see the temp gauge rise over 180 deg. Fortunately for me, I don't have to
contend with SoCal or Arizona temperatures here in Nova Scotia, so I don't
need to go to the heroic efforts required in 100/110+ temperatures ( But its
a DRY heat!) so now I have to replace that 180 deg thermostat with a 190 and
enjoy the success of this project.
Some unforseen benefits: I have picked up about 10 psi of oil pressure when
"hot" ( about 50 psi now at cruising speed of 60-70mph) The engine is much
quieter, and the heat intrusion through the firewall and floor has virtually
disappeared.
Many thanks to all. Life is good in a cool Tiger!
Dave Munroe
in Nova Scotia
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