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Tractor Talk Discussion Forum

MSD or other?

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bm3501466

08-08-2007 18:18:00




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I have a 460 pulling tractor that has been modified. I would like a more powerful spark to clean things up a bit. It has points right now. I would like to try the multi-spark systems. What kit do I need to buy? What should I watch out for? I have this posted on the pulling board, but I thought the more eyes the better. thanks




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buickanddeere

08-09-2007 09:23:19




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 Re: MSD or other? in reply to bm3501466, 08-08-2007 18:18:00  
If you want to really do it right and eliminate spark scatter. That's timing variations. Caused by gear lash, bushing play and shaft windup/wind down caused by each cylinder firing. There is a reason why auto manufactures read the engine position from crank sensors. And gone away from using distributers altogether. Use an inductive pickup on the flywheel and and electronic unit controlling advance. MSD fires the plug extra times at low rpms. This gives another chance for ignition should the mixture be plenty lean or rich. or if the plugs are loaded up from idling too rich & cold. MSD can reduce the tendency of detonation/knock. Sometimes the same power can still be obtained with an MSD and a couple or a few degrees less advance.

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davejoe

08-08-2007 20:28:32




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 Re: MSD or other? in reply to bm3501466, 08-08-2007 18:18:00  
you can keep your points with the MSD, they will work as the trigger and will last alot longer than with a conventional ignition as they will not have near the voltage passing through them. Dave



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souNdguy

08-09-2007 07:09:17




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 Re: MSD or other? in reply to davejoe, 08-08-2007 20:28:32  
Voltage should be the same.. current is what is lowered..

Soundguy



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bm3501466

08-08-2007 20:56:55




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 Re: MSD or other? in reply to davejoe, 08-08-2007 20:28:32  
In order to use the points in the system, do you have to order some type of electric pickup or is it all included when you order the box?



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Aaron Ford

08-08-2007 19:21:15




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 Re: MSD or other? in reply to bm3501466, 08-08-2007 18:18:00  
A Davis Unified Ignition or DUI would be a simple bolt in. It adapts a GM HEI unit to a Ford distributor. We are talking about a Ford 460, correct?

If not then a pertronix kit installed in your stock dizzy seems to work well.

Aaron



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bm3501466

08-08-2007 19:40:26




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 Re: MSD or other? in reply to Aaron Ford, 08-08-2007 19:21:15  
Farmall 460 with a 301. I don't want anything to do with pertronix again.



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georgeky

08-08-2007 19:24:32




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 Re: MSD or other? in reply to Aaron Ford, 08-08-2007 19:21:15  
I think he meant a Farmall 460 tractor.



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bm3501466

08-08-2007 18:42:35




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 Re: MSD or other? in reply to bm3501466, 08-08-2007 18:18:00  
Do you keep your points with the MSD system?



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Tim...Ok

08-09-2007 04:57:49




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 Re: MSD or other? in reply to bm3501466, 08-08-2007 18:42:35  
You can keep your points,the MSD will work with points or electronic ignitions..



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