Benefit of using a larger ignition coil?

[BAT]

Does anyone know what the factory voltage out of the coil is? I'm not sure I want to test it and risk blowing up my nice Fluke.

EDIT: Interesting. I did some research and the Ford coil is part of an EDIS ignition. A very good ignition that people rarely upgrade. If you look up edis, you will get a list of vehicles it came on. It is actually two coils in a pack. The factory plug gap in a 4.6 engine with this ignition system is .055. Holy moly. I'm sure our cylinder pressures (higher the cylinder pressure=more power=harder to ignite) are a great deal higher than a 4.6, but I think I should still be able to open up the plug gap to at least .040.

That is guaranteed to start a better burn.

Though I'm sure there is a better route still. At 12,000 rpms the coil has produce spark 100 times a second. Cut the coils in half, and each coil has to produce spark 200 times a second. That doesn't give much time for the coil to do its job. Electricity doesn't move as quick as we think it does. No doubt 4 msd coils would be great. I'm just babbling on now.

[BAT]

[mossy1200]

Does anyone know what the factory voltage out of the coil is? I'm not sure I want to test it and risk blowing up my nice Fluke.

EDIT: Interesting. I did some research and the Ford coil is part of an EDIS ignition. A very good ignition that people rarely upgrade. If you look up edis, you will get a list of vehicles it came on. It is actually two coils in a pack. The factory plug gap in a 4.6 engine with this ignition system is .055. Holy moly. I'm sure our cylinder pressures (higher the cylinder pressure=more power=harder to ignite) are a great deal higher than a 4.6, but I think I should still be able to open up the plug gap to at least .040.

That is guaranteed to start a better burn.

Though I'm sure there is a better route still. At 12,000 rpms the coil has produce spark 100 times a second. Cut the coils in half, and each coil has to produce spark 200 times a second. That doesn't give much time for the coil to do its job. Electricity doesn't move as quick as we think it does. No doubt 4 msd coils would be great. I'm just babbling on now.

Dont do it.
If your lucky your meter would blow fuse.
Take that from a sparky.
The resistances are further up the thread some place.

[dru86]

What effect would running plug caps without the inbuilt resistors have?

[BAT]

What plug caps have resistors in them? I don't even know what the point of them are. I do know that there was a guy that tested a whole bunch of spark plugs and one of the only plugs that DID NOT have a resistance were NGK.

[spizzak]

Can someone show me what the zx2 coils are.Never seen them before.Maybe a link please.

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