Club Cobra

Club Cobra (http://www.clubcobra.com/forums/)
-   Ignition (http://www.clubcobra.com/forums/ignition/)
-   -   Magneto ignition (http://www.clubcobra.com/forums/ignition/103621-magneto-ignition.html)

BBfangs 03-28-2010 10:14 AM
Magneto ignition
 
I recently purchased an EM cobra that was built with a magneto system in it. When you are idling or driving that tach bounces around 2,000 rpm in variation than what I believe it should be at. The seller told me he has tried fixing that tach but his mechanic told him it was because of the magneto and that was the best it would be. Any advice? I know nothing about those systems. Should it bounce around as much as it does? It is a new Pro Comp gauge so I wouldn't think it wasn't that. Is it because the high voltage pulse that is create? I know enough to get into trouble probably. :3DSMILE:

Rick Parker 03-28-2010 01:01 PM
As far as I know, a magneto can only use a mechanical tach.

brobehr 03-28-2010 03:51 PM
the magnets used in magnetos are very suseptible to corrosion. Could add to wandering idle rpm readings


brobehr

BBfangs 04-21-2010 03:58 PM
I called Vertex and they suggested a Mag Tach Converter. I found that the car already has one. I have a Auto Meter Pro Comp Ultra lite tach. Then the Vertex guy suggested running a ground. I found the car already had one from the mag to the frame. It seems to jump very little at idle but really bounces as the rpm's go up. What might be the next step? Any help would be appreciated.

CobraEd 04-21-2010 04:04 PM
Quote:
Originally Posted by BBfangs (Post 1045772)
What might be the next step? Any help would be appreciated.
Uh, . . get a coil & distributor :rolleyes:

It will be easier to understand / diagnose /work with, overall.


.

BBfangs 04-26-2010 05:30 PM
I am trying to find out what the cost is to fix my problem, if it is enough, I might as well change to a conventional distributor and coil set up. I can't seem to find an old school person who works with magnetos. They are fantastic for the spark that is generated but it is doing a number on my tach.

Jerry Clayton 04-26-2010 05:45 PM
try this guy--I've known him for 50 years--he was doing magnetoes when they still ran 8 carbs-- Lennie Hughes Magneto Service
56105 Barbarrah Drive
Bristol In 46507
Phone 574-293-6688

Tell him I sent you----might be good for a story or two

Jerry Clayton

BBfangs 04-27-2010 07:37 PM
Thanks, I really appreciate it. I will try to drop him a line tomorrow. I have been kicking around an MSD Billet distributor, a MSD 6 AL-2 box , with a blaster coil but all with labor I am expecting $800-$1,000. I was hopnig it would be cheaper than that too fix.

BBfangs 05-10-2010 04:14 PM
I am going to go with my first thought and replace it with the MSD system. I guess that will be my weekend project. Maybe a sprint car guy will be interested in buying the Vertex setup.

FWB 05-13-2010 09:48 AM
BB, do you have a FE motor in your car? i'm changing some stuff on my 427 and i have a MSD pro billet dist. with approx 5000 miles on it i want to sell.
it comes with a new cap and tweeking accessories. i'm in the allentown area.

fred

BBfangs 05-18-2010 05:41 PM
FWB,

Thanks but I don't have a FE motor plus I just bought and installed an MSD system over the weekend. I need to tweak it a bit once the rain stops. Are you going to the Revolution?


All times are GMT -7. The time now is 03:50 AM.

Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: