I've run into it before when the coil was supposed to have an inline resister to step down the voltage, but didn't.  Mainly on older Chrysler vehicles.  At that time, it would get hot enough to leave a blister if touched for more than a couple of seconds.

GregM

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Bruce Todd
Sent: Sunday, October 26, 2014 5:39 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Coil boil

I just recently had some work completed on my Syncro Westy which included a new coil for a 2.1 digifant  - when I got home from the mechanic (about a
15 minute drive) and shut down the motor,  I decided to touch the new coil and was surprised at how hot it felt  - I could not touch it for any length otherwise I would have burned my hand.

This is a new silver Bosch coil - is this normal?

Thanks,

Bruce