[Fot] GT6 cooling

[Gt6steve at aol.com]

Ed, do you still have the LARGE diameter spitty water pump pulley on the  
car or did one of the "experts" take it off.
 
These crude pumps cavitate badly and the temp will make a sudden spike  
upward, usually after a long straight.
 
The car showed evidence that they had been struggling with the cooling  
before it was parked in the early nineties.  The Rad could well be  undersize 
as noted above.  AFCO racing products sell a supermodified alloy  rad that 
they'll customize for your hoses. Low nose cars.  Mine is  11x22x4.5?? and I 
 
NEVER overheat.  After I solved the cavitation at Cal Speedway, that  is....
 
 
In a message dated 2/11/2014 5:33:39 A.M. Pacific Standard Time,  
igofaster at att.net writes:

while  I'm a witness that sometimes these Triumphs can be a pill, I've 
always
been  aware having owned a dozen or so that heating was as issue, 
especially  in
Texas. My racer (built by Bob Davis) has the larger cross flow  Griffin
aluminum radiatorb& I can get you the part number if you  wish.
What I have
noticed and what is applied when I drain or refill is  two things. Bob 
placed a
tap in the top of the thermostat housing with a  hex drive screw to make it
flush. I'll fill my radiator with the tap screw  out to let air flow and the
car slightly jacked up in the rear. I do my  final topping off with a food 
type
plunger while the car is elevated. With  the replacement radiator lower you
have to make sure all the air is out of  the system. My overflow tank and 
fill
tank is mounted up behind the engine  on the firewall perch. After running 
the
motor , I re-check and top off  again to make sure there is no air in the
system. The thermostat housing  also has a smaller restrictor passage. I do 
run
a fan. Cold days does  require blocking the oil cooler which is also 
located in
the front below  the radiator. I have to restrict air on the cooler and the
filter on mild  days to get over 175 degrees. My understanding is we should 
try
to get oil  temps around 220. If
you do these things, over heating because of water  flow should not be your
problem.
If you want I can sen you some detailed  photosb&
Bobby Whitehead
1970 GT-6+ DPB  
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