Alternator and coil
10-05-2016, 08:18 PM
#1
Racer
Thread Starter
Alternator and coil
Should I be concerned. If my alternator and coil temperature appears to be close to 130 degrees after car runs for about 20 minutes.
10-05-2016, 08:34 PM
#2
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130 F is "cold" (in comparison to the engine)
You probably have a 160 to 180 deg. thermostat - which is the "minimum" stabilized operating temp the engine will see.
Battery charge condition and electrical load will somewhat govern alternator temp. And coil temp with it sitting right over the intake, but ignition point dwell also has some bearing on coil temp, besides ambient temp, air flow (fan speed), etc., etc.
Why are you asking.
Plasticman
You probably have a 160 to 180 deg. thermostat - which is the "minimum" stabilized operating temp the engine will see.
Battery charge condition and electrical load will somewhat govern alternator temp. And coil temp with it sitting right over the intake, but ignition point dwell also has some bearing on coil temp, besides ambient temp, air flow (fan speed), etc., etc.
Why are you asking.
Plasticman
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10-05-2016, 10:42 PM
#3
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A cast aluminum alternator will quickly assume ambient engine room temperature as well as to reject the heat generated depending on load. They don't put fans on 'em for nothing.
Coils get hot. That's why they are potted usually in oil.
Dan
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