ford 8n coil issue

I'm working on my dads ford 8n and I have no spark and when the battery is in it the coil gets extremely hot. I'm not sure why it does this, and tips or help would be greatly appreciated thank you

6v or 12 v?

Front or side coil?

Any resistors in the ignition circuit?

Hard for us to help you with out more info.
Front distributor or side distributor.
With ignition on a coil can/will get warm if the points are closed or if it has a short in the distributor.

Mike........ALL ignition coils gitt WARM, but should NOT gitt burnie-burnie HOT. Unlike the weird 4-nipple square front mount, the later 5-nipple roundcan coil is generally robust. You can count nipples can't you?

Ennyhoo, ennytime yer ignition points are closed, you send them invisible electrons thru the coil winding making heat....BUT....you only gitt sparkies when the ignition points OPEN. As a general rule, the points are closed about 60% of the time for a 4-cyl engine. When the points OPEN, (making sparkies) the coil gitts a chance to semi-cool off.

As fer yer HOT coil problem, you either have a short to yer points...or...they have slipped closed. Surprizingly enuff, points set screw wear out. (they are BRASS screws) And sometimes, the shadetree wannabee mechanic over tighten the BRASS screw an strips the screw thread in the steel mounting plate.

Iff'n yer haffin' points problems, time to replace the SHORT 8-32x3/16 points screw. NOTE: most short screws are 1/4-in. 1/4-in screws in the N-ignition will catch the under the plate centrifugal advance weights and you will NOT be able to generate enuff engine power........screwy Dell

Screwy like a fox Dell!!

Coil should only be getting power with key on. Key off and bat installed should not power coil.

Also with key on, you get power to the coil, but points must be closed for current to flu and powe (watts) to disipate.

Fill in the gaps on coil, voltage and resistors and we can help you more