import ignition coil

[vtech]

recently i found my original ignition coil to be leaking oil , so it looks like the import coils are the only ones out there , i have read and talked with vpw that heat is the killer of these coils my air tubes from air cleaner are clear , does anyone have any suggestions about leaving the large cap plug off thats in the dist cap cover to let heat escape or will this cause some other kind of issue beside not being waterproof

[just me]

The vent tubes are not cooling. They are to prevent ionization in the cap. A copper disk under the coil with heat transfer paste will help keep the coil cool. A ballast resistor in line will help to limit current and thereby keep it cool
Measure voltage drop and curren draw of original coil and match that with the new coil.
I can elaborate when I'm not trying to type on this tiny phone screen.

[outpostm37]

I use a .025" thick round section of copper shim to fit into the recess in the distributor where the coil sits. Coat both sides of the copper with thermal compound (grease). Install the import (Chinese or other) coil and secure with the two screws. This will aid in the transfer of heat from the coil to the outer body of the distributor.
See photo.

[John Mc]

I use a .025" thick round section of copper shim to fit into the recess in the distributor where the coil sits. Coat both sides of the copper with thermal compound (grease). Install the import (Chinese or other) coil and secure with the two screws. This will aid in the transfer of heat from the coil to the outer body of the distributor.
See photo.

I'm told that part of the need for this washer is that the import coils are not as long as the original, so do not make good contact to carry the heat away. The shim helps take up the gap. (I've not seen one myself, so just passing along what I have read.)