How to gap spark plugs

[humfrz]

Originally Posted by Capt Spaulding

............... or the engine would get a case of the blind staggers at anything over half throttle...........

I had that happen once, one night, down in Hollister, CA. After I had consumed about a pint of whisky, I jumped on my nephew's Honda Shadow and was trying to catch my brother riding his Gold Wing.

Yep, someone or something had the "blind staggers", fer sure .......


humfrz

[Strife26]

Originally Posted by humfrz

Oh ....... I'm sorry ....... I was just trying to make a funny .......

I should have read your sig ......


Good luck gapping your spark plugs.




humfrz

It's fine, sorry. I just get too many of those answers when I am trying to learn, so I apology, I promise I have a sense of humor, just maybe flew over my head cause I'm dumb, lol.

[humfrz]

Originally Posted by Strife26

It's fine, sorry. I just get too many of those answers when I am trying to learn, so I apology, I promise I have a sense of humor, just maybe flew over my head cause I'm dumb, lol.

That's OK, sometimes my "funnies" aren't funny to anyone except me .....

Sounds like you have been battered up by the internet before .....

So, your plugs, in the box, are set at a 0.032" gap.

As @Ultramaroon suggested and I concurred, that that gap would be fine for your engine [with modest boost]. Here is a reference:

BTW, that's a neat bridge ya'll have there in Redding ...... I enjoyed walking across it.

Have a good weekend.




humfrz

[Ultramaroon]

Originally Posted by Strife26

It's fine, sorry. I just get too many of those answers when I am trying to learn, so I apology, I promise I have a sense of humor, just maybe flew over my head cause I'm dumb, lol.

Got your plug gap right here.




Good luck with them. For real!

[Strife26]

Originally Posted by humfrz

That's OK, sometimes my "funnies" aren't funny to anyone except me .....

Sounds like you have been battered up by the internet before .....

So, your plugs, in the box, are set at a 0.032" gap.

As @Ultramaroon suggested and I concurred, that that gap would be fine for your engine [with modest boost]. Here is a reference:

BTW, that's a neat bridge ya'll have there in Redding ...... I enjoyed walking across it.

Have a good weekend.




humfrz

I went and grabbed a better tool from Napa. I guess the coin type shouldn't be used (mfker too late, damnit). So on the coin it read around .032. The filler type had them above 25 so probably .032. I was able to get them down. Was a little scary because they're so sensitive.

[humfrz]

Originally Posted by Ultramaroon

Got your plug gap right here.




Good luck with them. For real!

Now, THAT's the reason they don't let Ultramaroon back in some bars .......


humfrz

[lamawithonel]

For your consideration: https://doi.org/10.1016/j.asej.2012.09.006

Abstract

There are many different spark plug designs available in the market nowadays. Understanding the differences between them is beneficial in helping the engine to run properly and efficiently.


In the present study, a group of four spark plugs with different number of ground electrodes were chosen to explore their impact on the engine performance and especially the combustion instability.


The results showed that the amount of crossover of the ground strap, the dimensions of the ground strap and the gap width are the primary factors affecting the spark onset, flame initiation and kernel growth.


The plug that performed the best was a plug with no ground electrode where the amount of heat loses was the lowest and there was no obstacles affecting the flame growth. The coefficient of variation (COV) of this spark plug type was the lowest of the four main test spark plugs.

[Ultramaroon]

Originally Posted by lamawithonel

For your consideration: https://doi.org/10.1016/j.asej.2012.09.006

That guy's a fucking hack. The big difference comes from grinding off the ground electrode to force a huge arc. Bullshit paper makes me grumpy.

[lamawithonel]

There's a lot of hard science out there on flame kernel propagation. Say what you will, there's pretty good consensus at this point. It's part of the reason the big auto companies have been looking at newer ignition technologies lately, like jet and laser.

Here's another example specific to spark plug gap (picture below): https://doi.org/10.1016/j.apenergy.2017.01.059

And check out the "Burn Rate & Ignition Advance" section from this (non-scientific, but easy-to-read) Grape Ape Racing white paper: https://grapeaperacing.weebly.com/up...06275/heat.pdf

[humfrz]

Originally Posted by Ultramaroon

That guy's a fucking hack. The big difference comes from grinding off the ground electrode to force a huge arc. Bullshit paper makes me grumpy.

But,but, what about his credentials, grumpy .......

"The author is working as an assistant professor at Shoubra faculty of engineering, Benha University, Cairo, Egypt. He is now on business leave to the British University in Egypt."

And after all, the British are known for their automotive electronics expertise (as in Lucas) .....


humfrz

[humfrz]

Originally Posted by lamawithonel

For your consideration: https://doi.org/10.1016/j.asej.2012.09.006

WOW ...... lamawithonel ........ waaaaaay too much heavy science there .....

Hesh up @Strife26 ....... you already caused enough posts, just to adjust spark plugs ......

NOW, ya'll got ol @Ultramaroon all grumpy ......

Besides, he has his spark plug gapping tool and he is gonna use it forever, no matter what.

So, there! .......


humfrz