Search



Go Back   MustangForums.com > Ford Mustang Tech > Classic Mustangs (Tech)
Sign in using an external account
Register Forgot Password?
Search

Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
 
Thread Tools Search this Thread
Old 02-18-2010, 03:26 AM   #1
nba1341
4th Gear Member
 
nba1341's Avatar
 
Join Date: Jun 2006
Vehicle: 1965 mustang fastback
Location: Upland, California
Posts: 1,246
Default Oil leaking from the top of the coil?

Ok so I just noticed that there is a little bit of oil at the top of my coil. I first noticed a tiny bit on the bottom of it (leaked down from the top) when I was changing my starter.


Why would my coil be leaking oil? And is it going to die soon?


P.S. Orig had a flamethrower coil and it died on the freeway so I had to buy one from auto zone and got an accell one exactly 1 year ago. So this accell coil is 1 year old.
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
__________________

1965 Mustang Fastback 302
1998 Mustang 3.8L
(╯°□°)╯︵ ┻━┻
nba1341 is offline   Reply With Quote
Old 02-18-2010, 03:45 AM   #2
67mustang302
6th Gear Member
 
Join Date: Apr 2007
Vehicle: 67 Mustang Coupe
Location: California
Posts: 10,279
Default

Coils are transformers. The oil helps to cool them. If it's leaking it will need to be replaced, since air will get in and the oil will vaporize into the air pocket, mix, and probably ignite, and your coil will explode...or at least burn up in flames.

That's what causes some transformer explosions(oil filled ones anyway).
__________________
Who cares how much horsepower it has, all that matters is how fast it goes!

Untested 331, lots of suspension, chewing up corners.
67mustang302 is offline   Reply With Quote
Old 02-18-2010, 04:12 AM   #3
nba1341
4th Gear Member
 
nba1341's Avatar
 
Join Date: Jun 2006
Vehicle: 1965 mustang fastback
Location: Upland, California
Posts: 1,246
Default

should i get another oil filled one? Also what brands are recommended?
__________________

1965 Mustang Fastback 302
1998 Mustang 3.8L
(╯°□°)╯︵ ┻━┻
nba1341 is offline   Reply With Quote
Old 02-18-2010, 04:19 AM   #4
tx65coupe
5th Gear Member
 
tx65coupe's Avatar
 
Join Date: Dec 2008
Vehicle: 1965 Ford Mustang
Location: Texas
Posts: 4,389
Default

I agree, it needs to be replaced soon.

What distributor / ignition are you running? Do you have the Pertronix Ignitor? It can make a difference which coil to get, since they come in different resistance values.

Do you remember if you had a Flamethrower or Flamethrower II coil before?

Where do you have it mounted? I relocated mine to the inner fender to keep the engine heat away from it.
__________________
1997 Cobra Convertible (stock)
1965 Mustang
Late Model 302, T5, Versailles 9 Inch
Edelbrock Top End
JBA Headers and Dynomax Ultraflo Mufflers

http://www.youtube.com/watch?v=LXk_MVV7V0g

Last edited by tx65coupe; 02-18-2010 at 04:21 AM.
tx65coupe is offline   Reply With Quote
Old 02-18-2010, 04:22 AM   #5
nba1341
4th Gear Member
 
nba1341's Avatar
 
Join Date: Jun 2006
Vehicle: 1965 mustang fastback
Location: Upland, California
Posts: 1,246
Default

its a motorcraft distributor. coil was a flamethrower 1 oil filled before.
__________________

1965 Mustang Fastback 302
1998 Mustang 3.8L
(╯°□°)╯︵ ┻━┻
nba1341 is offline   Reply With Quote
Old 02-18-2010, 03:48 PM   #6
67mustang302
6th Gear Member
 
Join Date: Apr 2007
Vehicle: 67 Mustang Coupe
Location: California
Posts: 10,279
Default

They're all oil filled to my knowledge. The non oil ones for industrial stuff are usually wrapped in porcelain. But a 220+KV power station transformer is quite a different beast from an automotive ignition coil.
__________________
Who cares how much horsepower it has, all that matters is how fast it goes!

Untested 331, lots of suspension, chewing up corners.
67mustang302 is offline   Reply With Quote
Old 02-18-2010, 05:17 PM   #7
nba1341
4th Gear Member
 
nba1341's Avatar
 
Join Date: Jun 2006
Vehicle: 1965 mustang fastback
Location: Upland, California
Posts: 1,246
Default

They sell that flame thrower one in a black unit on summit that is expoxy filled. Not sure what the function does.
__________________

1965 Mustang Fastback 302
1998 Mustang 3.8L
(╯°□°)╯︵ ┻━┻
nba1341 is offline   Reply With Quote
Old 02-18-2010, 06:35 PM   #8
2+2GT
6th Gear Member
 
Join Date: May 2009
Vehicle: 66 Mustang 2+2GT
Location: PA
Posts: 5,217
Default

The point of oil or epoxy filling is to allow heat transfer out of the coil, preventing hot spots inside. If yours is leaking oil, it's either defective, damaged, or has been run at excessive voltage. Before you spring for a new coil, check the voltage to the coil. I'd hate to see you fry the new one.
2+2GT is offline   Reply With Quote
Old 02-18-2010, 07:05 PM   #9
nba1341
4th Gear Member
 
nba1341's Avatar
 
Join Date: Jun 2006
Vehicle: 1965 mustang fastback
Location: Upland, California
Posts: 1,246
Default

Quote:
Originally Posted by 2+2GT View Post
The point of oil or epoxy filling is to allow heat transfer out of the coil, preventing hot spots inside. If yours is leaking oil, it's either defective, damaged, or has been run at excessive voltage. Before you spring for a new coil, check the voltage to the coil. I'd hate to see you fry the new one.

What voltage should it be getting? 12-14v im assuming?
__________________

1965 Mustang Fastback 302
1998 Mustang 3.8L
(╯°□°)╯︵ ┻━┻
nba1341 is offline   Reply With Quote
Old 02-18-2010, 07:11 PM   #10
2+2GT
6th Gear Member
 
Join Date: May 2009
Vehicle: 66 Mustang 2+2GT
Location: PA
Posts: 5,217
Default

Quote:
Originally Posted by nba1341 View Post
What voltage should it be getting? 12-14v im assuming?
Nope. More like 7V. 14V would certainly explain why the oil is fleeing the scene. The coil should only get the full 12V while the starter is engaged.
2+2GT is offline   Reply With Quote
Old 02-18-2010, 07:11 PM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

Tags
1965, 66, check, coil, coming, distributor, engine, ford, ignition, leak, leaking, leaky, mustang, oil, top

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 09:21 PM.

© Internet Brands, Inc.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.5.2

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup