normal dizzy vs seperate coils?

[alekp92jdm]

I think that what they are? I've seen a few cars where the plug wires go to what looks like 4 seprete boxes (I'm guessing seperete coils)....what is that point of this?

[dysfunk]

my car has an external coil, which is what you're referring to.

External:

[C91BLX7]

I think that what they are? I've seen a few cars where the plug wires go to what looks like 4 seprete boxes (I'm guessing seperete coils)....what is that point of this?

Like this? coil over plug. If thats what you mean, then it has tons of advantages over the old school single coil and even coil packs.

[dysfunk]

Like this? coil over plug. If thats what you mean, then it has tons of advantages over the old school single coil and even coil packs.

He's talking about internal coil and external coil differences in the distributors.

[alekp92jdm]

I'm talking about this...how the plug wires go to 4 different boxes

[alekp92jdm]

I think its pretty much the same as coil over plug but what are the advantages to this?

[reklipz]

All that looks to be is spark controlled by the ECM rather than timed by the camshaft.

[JonnyD]

As far as I understand it having a seperate coil for each plug can provide more acurrate timing becase the ecu fires the coil not a mechanical distributor, so your timing can't really ever be off, and perhaps a stronger spark in some cases. It would also be more reliable beacause if one coil craps out you could limp home if you needed to,
And change your oil depending how long you drove it cause there would be gas in the oil from not being burnt by the failed coil/plug. I've had cars come into my shop with one burnt coil and they had been driving it around for quite some time and you could've poured the oil back into the gas tank and used it as fuel (almost) . Im not suggesting its a good idea to drive around with one non firing coil either. So anyway in my understanding thats why cars use a coil for each plug. (I dont know if that was part of your question or not)

As far as the car in that picture you posted, pretty sure thats just to do away with a mechanical distributor. Pretty sure there are kits you can buy to change just about any mechanical distributor type engine to computerized ignition.