Go Back   The Ford Barn > General Discussion > Early V8 (1932-53)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Search this Thread Display Modes
Old 07-18-2013, 03:47 PM   #1
Merc Cruzer
Senior Member
 
Merc Cruzer's Avatar
 
Join Date: Jul 2010
Location: Conifer, Colorado
Posts: 519
Default Coil boil

Anyone see a coil boil. Just got back from a test drive after adjsuting the brakes and noticed the coil had bubbles. It is hot outside today.....6 volt system and just checked the voltage and it is charging at 6.5 volts.
Attached Images
File Type: jpg DSCN0517.jpg (63.1 KB, 69 views)
File Type: jpg DSCN0515.jpg (61.2 KB, 61 views)
File Type: jpg DSCN0516.jpg (65.4 KB, 59 views)

Last edited by Merc Cruzer; 07-18-2013 at 04:31 PM.
Merc Cruzer is offline   Reply With Quote
Old 07-18-2013, 04:35 PM   #2
BUBBAS IGNITION
Senior Member
 
BUBBAS IGNITION's Avatar
 
Join Date: May 2010
Location: SPEEDWAY INDIANA
Posts: 1,944
Default Re: Coil boil

Pretty common if not using a dropping resistor before the coil.
The coil is oil filled and typical running voltage is more like 4.5 volts with a dropping resistor before the actual coil.
Usually the coil is vacuum packed with oil and allows for expansion when hot. However the coil is sealed and a leak means breakdown of the seals.

Using two ressitances lowers the wattage to each and lowers the heat....you are lucky it ran you home.....
Had it been one of the newer off shore units it would have died ...
__________________
If it Makes Spark, we do it !!!!
www.bubbashotrodshop.com
BUBBAS IGNITION is online now   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 07-18-2013, 06:26 PM   #3
Merc Cruzer
Senior Member
 
Merc Cruzer's Avatar
 
Join Date: Jul 2010
Location: Conifer, Colorado
Posts: 519
Default Re: Coil boil

Bubbas:

It has run for over 20 years and just now failed. Picked up a new BW coil, will look for a NOS.
Merc Cruzer is offline   Reply With Quote
Old 07-18-2013, 06:34 PM   #4
BUBBAS IGNITION
Senior Member
 
BUBBAS IGNITION's Avatar
 
Join Date: May 2010
Location: SPEEDWAY INDIANA
Posts: 1,944
Default Re: Coil boil

Quote:
Originally Posted by Merc Cruzer View Post
Bubbas:

It has run for over 20 years and just now failed. Picked up a new BW coil, will look for a NOS.
Could be it just now had seal fail.
My bet is on a change in primary resistance causing the heat build up.
Running voltage should be less than battery voltage...
__________________
If it Makes Spark, we do it !!!!
www.bubbashotrodshop.com
BUBBAS IGNITION is online now   Reply With Quote
Old 07-18-2013, 06:34 PM   #5
ken ct
BANNED
 
Join Date: May 2010
Location: stratford,ct
Posts: 5,972
Default Re: Coil boil

It also looks like its sitting right on top of the exhaust manifold. I would move it elsewhere. ken ct.
ken ct is offline   Reply With Quote
Old 07-18-2013, 08:19 PM   #6
Merc Cruzer
Senior Member
 
Merc Cruzer's Avatar
 
Join Date: Jul 2010
Location: Conifer, Colorado
Posts: 519
Default Re: Coil boil

Ken:

Factory bracket and factory location as far as I can tell. I did pull the new coil up a bit so the bracket is half way up the coil.

Bubba:

The new one in on shore - Mexico
Attached Images
File Type: jpg DSCN6113.jpg (59.6 KB, 45 views)
Merc Cruzer is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 03:14 PM.