Yesterday's Tractor Co.
Shop Now View Cart
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Classified Ads
Photo Ads
Tractor Parts

Community
Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Galleries
Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Articles
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs
Glossary

Miscellaneous
Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
TractorLinks.com
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
  
Farmall & IHC Tractors Discussion Forum
Show Parts for Model:

Which coil

Welcome Guest, Log in or Register
Author  [Modern View]
jeffred

08-12-2017 18:26:20




Report to Moderator

I'm putting in a tune up kit in a '45 BN. I'm trying to figure out what type of coil to buy? It is a 12 volt with delco distributor. Currently there is an external resistor on the coil. I was shopping at Tractor Supply tonight and they had a coil that said it worked for both 6 volt and 12 volt, but the coil itself has no external resistor required written on it. So I got kind of confused. Part number is 396546R93.

[Log in to Reply]   [No Email]
Bob

08-13-2017 09:49:38




Report to Moderator
 Re: Which coil in reply to jeffred, 08-12-2017 18:26:20  
From TSC's website....

-For 6 volt systems with or without external resistance
-For 12 volt systems with external resistance

Clear as MUD, eh? NOT really!



[Log in to Reply]  [No Email]
Janicholson

08-12-2017 19:57:21




Report to Moderator
 Re: Which coil in reply to jeffred, 08-12-2017 18:26:20  
Old is correct. No such thing as described. It might be labeled as such. A 6 volt coil will be about 2 to 2.5 ohms. So will a 12v coil for use with a ballast resistor (these two are essentially the same) A 12v coil for use with no resistor is truely a 12v coil. Jim



[Log in to Reply]  [No Email]
old

08-12-2017 19:33:10




Report to Moderator
 Re: Which coil in reply to jeffred, 08-12-2017 18:26:20  
Well #1 you big problem is you where looking at China made junk so yep they tend to put info on things like coils that are not correct. No way a coil can work on 6 volts and 12 volts with out either not running well on 6 volts or running well but burning up points fast. Buy ignition stuff for places like NAPA or O'Reilly's and get good brand parts. Shoot I buy points for some of my stuff and it has a life time warranty on them so when they go bad I take them back and get new for nothing

[Log in to Reply]  [No Email]
Loren in Iowa

08-13-2017 07:30:10




Report to Moderator
 Re: Which coil in reply to old, 08-12-2017 19:33:10  
I bought one of those "no resistor needed" coils, at NAPA, and have been using it on a Delco distributor, with a 12 volt system, and it has worked fine, for the last several years.



[Log in to Reply]  [No Email]
rvirgil_KS

08-13-2017 08:31:05




Report to Moderator
 Re: Which coil in reply to Loren in Iowa, 08-13-2017 07:30:10  
IC14SB is NAPA number for 12 volt "no resistor needed" coil. It should have 3 ohms across + and - terminals. I would use it (or equivalent), get rid of the resistor and eliminate a future problem.



[Log in to Reply]  [No Email]
old

08-13-2017 09:24:34




Report to Moderator
 Re: Which coil in reply to rvirgil_KS, 08-13-2017 08:31:05  
3 ohms yes but how many people have a VOM that is calibrated so as to get that reading out of say 10 different VOMs ?? I have 2 VOMs and I know if I test things with the 2 of them I get a different reading out of each so one can only get a ball park figure out of many cheap meters



[Log in to Reply]  [No Email]
rvirgil_KS

08-13-2017 15:55:27




Report to Moderator
 Re: Which coil in reply to old, 08-13-2017 09:24:34  
True. Especially with cheap meters. On a coil resistance check I use a digital meter that will hopefully tell me if reading is closer to 1 1/2 ohms or 3 ohms.

I find a lot of the erratic readings at low ohms are in the probes and probe connections. I short the probes, note the reading, then check across coil and subtract probe resistance. Sometimes takes a few tries to reach a conclusion.



[Log in to Reply]  [No Email]
Janicholson

08-13-2017 07:39:28




Report to Moderator
 Re: Which coil in reply to Loren in Iowa, 08-13-2017 07:30:10  
If you disconnect the lead to the points, what is the resistance across the two small coil terminals. old and I are trying to figure out how a coil can be acceptable for use with or without a ballast resistor and be either too hard on points, or too weak on spark. Jim



[Log in to Reply]  [No Email]
banjoman09

08-12-2017 18:34:48




Report to Moderator
 Re: Which coil in reply to jeffred, 08-12-2017 18:26:20  
Personally I try to put back what is on it....but you can go either way; internal or external. Not sure about the 6/12v both in one....these guys will know.



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
Fast Shipping!  Most of our stocked parts ship within 24 hours (M-Th). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a company you can trust and have generous return policies. Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ About Us ]

Home  |  Forums


Copyright © 1997-2016 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters