Jess -
I drive my stock A90 (everything the same as the 100) in the hottest
traffic in Hong Kong and it never overheats, ever. My BN1 in
California never overheats either. The car is generally well designed
for keeping cool, with the exception of heat shielding for the carbs.
Key things to do are;
1) Replace t-stat with a 160 deg
2) Take your radiator out (easy) and take it to a shop to be rodded.
This makes a HUGE difference, and rodding is usually pretty
inexpensive to have done.
3) Use a high pressure nozzle, while the radiator is out, and spray it
full blast into the block. That should help remove scale.
Finally, for extra credit, something that should be done with all 100 motors:
The exhaust manifold and heat sheild should be sent to Jet Hot for
heat coating - this will greatly reduce float bowl vaporization and
crappy running while hot.
Alan
On 4/25/09, Jess Power <jessmd1@comcast.net> wrote:
> My 1954 BN1 is running hot.Placed new thermostat,flushed the
> radiator with Xerex,adjusted the timing(not overretarded).I did not
> replace the water pump but it is not leaking.The fan belt is not too
> loose.Anyone have any comments?It runs well at first but once it heats
> up it threatens to kill when one accelerates,backfires after reving it
> up.
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Alan
'52 A90
'53 BN1
'64 BJ8
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