Forum Discussion
MrWizard
Nov 14, 2016Moderator
Depending on where you mount the heat sink
On the engine compartment firewall,
Or
Back in the battery compartment, there may not be any airflow to cool it
So Yes go big
Also you might be pulling 75 percent or more alternator rating thru the external if the house batteries are low and the engine batteries full
The oem diodes are heat sinking to the alternator housing (that's a lot of metal)
The stator winding's still carry all current being produced
You moved the heat from the diodes charging the house batteries, to outside of the alternator, not the amps in the stator windings
Moving heat outside the alternator keeps everything inside there cooler
On the engine compartment firewall,
Or
Back in the battery compartment, there may not be any airflow to cool it
So Yes go big
Also you might be pulling 75 percent or more alternator rating thru the external if the house batteries are low and the engine batteries full
The oem diodes are heat sinking to the alternator housing (that's a lot of metal)
The stator winding's still carry all current being produced
You moved the heat from the diodes charging the house batteries, to outside of the alternator, not the amps in the stator windings
Moving heat outside the alternator keeps everything inside there cooler
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