spark plug choice for Ignighter II

I will soon have an Ignighter II kit for my 1600cc engine. Distributor, coil, wires, etc. Is there a spark plug that is best with this system, or are the new Bosch WR 8 AC+ that I have adequate?
They have a center electrode enhanced with Yttrium...yup...Yttrium...whatever the hell that is. Probably some "Rare Earth Mineral" thing.

Al...would those be iridium plugs?

I took it directly off the box ...Yttrium. The plugs say "SUPER PLUS" on them and the numbers are on the boxes...WR8 AC+ made in Germany. Threads are the right length as well. I just didn't know if there was specific spark plug to use with the Flamethrower coil and the rest of the stuff.

Inexpensive NGK DR7EAs work for me.

Al, I have found that cars that use OE Iridium or platinum special plugs are good with that.

A stock 1600 should stick with W8DC Bosch(I think that's right), OE fitment.

So, unless your engine/heads are modified, stick with OE plugs.

Cape Dude!

Those plugs are fine.

"Yttrium" is Iridium in Yiddish, that's all........ ;>)

Gap 'em at .035-.040. (You might go wider, like .045, but I don't know how hot that coil is.) ((Now I'll probably get a buncha comments about that gap being too wide - If you agree with them and think your coil is closer to stock power, drop to .027 - no biggie))

Replace 'em at 75,000 miles or so.

Rave on.

Wave to the ladies at Nausett Beach.

P.S: Why "8" heat range instead of W7 AC's? I happen to be using 8's in Pearl (W8 AP with platinum tips), but most stock 1,600's go with W7's. Just curious.......W8 AC's should run just fine, IMHO...

Cause it was from memory, which ain't so good these days! You saw my parentheses where I said "I think that's right". Or maybe not.

Thanks guys. The coil is 45,000 volts. Not sure what the stock Bosch blue coil is. My Muir book says .025-.028 on the gap, I guess I'll try the .028-.030 range and see how it goes.

I run the FlameThrower II disty and coil and IIRC gap mine at .035.

~WB

Thanks , Wild Bill.

Gordon.... 75,000 miles...really?...I may have to hire David Stroud or Iron Ass Crosby to help me get that kind of mileage on that engine!
I think something catastrophic would happen to me or that little 1600 before I can get to that goal. (Jack, no disrespect intended)