[AzTJ]

any one run platinum +4 (4 prongs)? Any luck or comments?

I wouldn't run those unless you have coil packs or a high energy igintion system...

I run Bosch Platimun plugs, love'em!

 

[AzTJ]

Do you still have to set the gap when you get +4? They do look like they are not set.

https://www.quadratec.com/products/55114_107.htm

No - they are preset and should not need to be gapped, because there really isn't a good way to. Usually the guys at the auto part stores are trying to BS you into buying them for the higher price. I'm gonna try them E-3's when its tune up time. But anything "platimun" should be fine. I'm also thinking of getting an MSD Blaster Coil and bigger 9-10mm wires for the hell of it.

 

[AzTJ]

which MSD blaster coil (#?) is for Jeep TJ's? is it a universal part because neither summitracing nor quadratec had the actual blaster listed for TJ's

MSD #8228 - I know it will work for '97 TJ's with 4.0L but I don't know about '98-Up. AutoZone and maybe Checker cary them in stock, so you might be able to go there and check one out first hand to see if it would fit. Accel does have a coil that is listed for 91-99 YJ/TJ - LINKY, but 98-99 will need an adapter for it to work... I think it has to do with the input pins to the coil itself, either 1 or 2. But I'm going to be getting the MSD 8.5mm wires when I upgrade the coild and plugs.

 

[AzTJ]

....Iridiums......

Iridiums are great! Especially for high performance engines with high energy ignition systems(imports with multiple coils packs and upgraded MSD/Accel systems)... They will last a looong time. A friend ran them in his Audi S4 for well over 50k and it didn't even look like they were used!

 

[AzTJ]

Sorry - but yes, I believe that single tipped plats are the best for our 4.0L/2.5L Jeeps