If I wanted to add a Mag instead of one of my electronic ignitions?

[hughfi]

Which one should I get? I have an 0-320-E3D 160hp.

Thx.

Hugh.

[rv9av8tr]

You would want to install the left mag (typically the one with impluse coupling). That way you could at least start the engine by hand proping if the battery got too low to crank it over.

[rv9av8tr]

... and put the mag leads to the bottom cylinders and EI to the top cylinders

[Ken]

Why would you fire the bottom plugs with the mags? Wouldn't the EI give you a better spark on the bottom where you need it most?

[jclark]

Originally Posted by rv9av8tr

... and put the mag leads to the bottom cylinders and EI to the top cylinders

This is contrary to what some vendors recommend.

Jeff Rose (ElectroAir) recommended EI on bottom plugs where you are more likely to have oil and the hotter spark would burn through it better than the mag.

I have found this to absolutely true.

James

[Kyle Boatright]

Originally Posted by jclark

This is contrary to what some vendors recommend.

Jeff Rose (ElectroAir) recommended EI on bottom plugs where you are more likely to have oil and the hotter spark would burn through it better than the mag.

I have found this to absolutely true.

James

Just one data point, but I did the opposite (EI on top) and have never fouled a plug on either ignition system in 550+ hours.

[az_gila]

Originally Posted by hughfi

Which one should I get? I have an 0-320-E3D 160hp.

Thx.

Hugh.

...then a 4371 or 4373 Slick magneto would work on the left side. Both are listed as applicable to the 160 HP O-320-D1A model that Vans sells. One is 20 degree timing, and the other is 25 degrees.

If you want to put on a Lycoming suggested magneto, then you can check your equivalent O-320 model number on this list....

http://www.lycoming.com/support/publ...fs/SI1443F.pdf

Both are impulse magnetos and you would also need a LW12706 spacer and two longer studs - part # 31C-12.

[osxuser]

I highly suggest Bendix/TCM mag instead of a slick. I know they weigh more, but they have a better record in my experience, and they don't have an open SB on them right now like the Slick.

I suggest an S4LN-21, 10-51360-30...

[rv9av8tr]

Klaus at LSE told me to put the EI wires to the top. My presumption is that EI will be timed to fire before the mag much of the time. You want to ensure dry plugs (no oil fouling) to get the most out of your EI advantages.

[breister]

You should install the one I took OFF my airplane to install a Lightspeed!



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