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View Full Version : Spark Plugs that are Gappable and good



TheWeiss
10-05-2009, 02:45 PM
I am looking to replace my old spark plugs and I've having trouble finding any plugs that look good (i.e. reliable) that are gappable. I have a screamin Demon coil an upgraded plus that claim let allow me to run a .065 gap. I don't want to run a gap that is that big but I would like to take advantage and run a slightly larger gap and I want something that is at least coated in Platinum. I have previously used Splitfire triple platinum plugs but they've been discountinued....Can anyone make any suggestions? Good and bad experiences are welcomed...

Ink
10-05-2009, 02:51 PM
I run Ac delco's in everything.

Mudderoy
10-05-2009, 03:54 PM
Champion "el cheapo" I have not run a coil with a higher voltage though.

TXstiGUY
10-05-2009, 05:24 PM
Boshe or the new Pulstar you can't gap them but the supposed to be really good.

BlueXJ
10-06-2009, 12:55 AM
Use the Champion Truck Plugs. They will stand up to high output coils and even MSD ignition systems. Had them both on a YJ with a 4.0L and never a problem with those Champions.

xj4life2
10-06-2009, 10:19 AM
Champions are the recomended plugs for the Cherokee and came from the factory with them installed. For some reason XJ's like cheap plugs and run much better on them I beleive the are a RN9YC but check to be sure gap should be at .35