Manufactured plug gap: Champion 7034's.
So I bought a set of Champion 7034’s based on the recommendations on this forum.
When I checked the manufacturer’s gap (the gap the plugs were made with) I found the plugs were gapped at almost .050”. The gap I need for the 4.0L engine is .035”.
I’ve been using Champion plugs for 30 years. I have never seen a Champion plug that was not gapped from the factory very far off from what the engine requires, so, I was surprised to see such a large gap on these 7034’s.
I presume this is due to the fact that the 7034’s can be used in a variety of engines, some of which might require such a large gap, so Champion makes the plugs this way, am I right?
I know I can close the gap, but the ground electrode will not be parallel to the base of the plug, which is the desired outcome and the reason why it is important to manufacture the ground electrode gap close to the final number needed by the application.
Anyone have any issues with closing down the .050”+ gap to .035”? Thanks.
2002 Wrangler Sahara, all stock, 5-speed, Dana 44, dual tan tops, 2nd owner.
2008 Hemi Grand Cherokee Limited 4X4, Quadradrive II, original owner, 24,000 miles.