Can you trust pre-set plug gap?

Hi, I have a 78 kz1000, I recently put plugs in it and the thought crossed my mind that ngk plugs may not be pre-gapped. Are they? If not what is the recommended gap for my bike? Thanks all!

Try 0.28 to 0.32 for a plug gap,also a tiny bit of the silver anti-seize on the first few threads(keep away from the center electrode)will ensure the plug won't gall or seize in the sparkplug hole(s).

I usually find new NGKB8ES spark plug gaps to be ideally gapped right out of the box.

Trust, but verify. :lol:

Good Luck!

MFolks wrote:

Try 0.28 to 0.32 for a plug gap,also a tiny bit of the silver anti-seize on the first few threads(keep away from the center electrode)will ensure the plug won't gall or seize in the sparkplug hole(s).

Or in metric 0.7mm - 0.8mm

Patton wrote:

I usually find new NGKB8ES spark plug gaps to be ideally gapped right out of the box.

Trust, but verify. :lol:

Good Luck!

Same here, and on the D8EA's too.

The only time I found one that was not gapped was when I saw the clerk drop the box on the floor. He looked at me like I was crazy when I said i wanted another one. I told him he just re-gapped the tip to ZERO". Sure enough, it was shorted.

(That was when they didn't have the cardboard tube on the plug in the box.)

loudhvx wrote:

Patton wrote:

I usually find new NGKB8ES spark plug gaps to be ideally gapped right out of the box.

Trust, but verify. :lol:

Good Luck!

Same here, and on the D8EA's too.

The only time I found one that was not gapped was when I saw the clerk drop the box on the floor. He looked at me like I was crazy when I said i wanted another one. I told him he just re-gapped the tip to ZERO". Sure enough, it was shorted.

(That was when they didn't have the cardboard tube on the plug in the box.)

Yep. I check them all as I put them in, but I have yet to need to change any.

I usually find new NGKB8ES spark plug gaps to be ideally gapped right out of the box.

Trust, but verify.

...

Same here, have always measured the GAP to be within spec... Notice I said always MEASURED...

As the others mentioned, always check them and the Anti Sieze compound is an extremely good tip I learned from Plummen and Larry C where it should always be used when steel to aluminum is the process...

They are pre gapped and some are shipped with a plastic cylinder slipped on the end of the plug so it won't get hit if dropped. Of course, if some bozo drops it as he is putting it in.....:laugh:

+1 on using the anti sieze compound on the threads and a torque wrench to pull them down.

Forgot...


I'm on the silver bottle habit too ... anti-seize.

always double check plug gap prior to install. Although I have not used antiseize yet on the plugs. No galling issues really in that aspect. Just remember it effects torquing numbers since the plug threads are now lubed.

i just did 8 new plugs in two seperate motors....all were exact cept one....smashed closed on gap almost....and it was the one i almost put in till i eyed it wow...got to where i thought they were gonna all be good...last one was not....allways dbl check

Dragone wrote:

always double check plug gap prior to install. Although I have not used antiseize yet on the plugs. No galling issues really in that aspect. Just remember it effects torquing numbers since the plug threads are now lubed.