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I just received some ACDelco 41-110 plugs for my 08 C6. Upon examination, I noticed some rather sharp points/edges on the ground electrode. Probably caused by the shear that cut the electrode ends. Although my engine is stock, I'm not wild about placing sharp edged things in the chamber. A few seconds with a light touch and a Cratex should take care of things. Just wondered if others here have seen this.
Last edited by TwoRedOnes; Nov 15, 2019 at 09:31 PM.
You are way overthinking this ! ....... Have a nice cold drink of something that has a bit of alcohol in it and then start thinking of better thoughts besides your spark plugs with sharp edges.
I'll seriously take your advice about some liquid refreshment! As for over thinking things, I'm an engineer (electrical) and "over" thinking is my nature. Attached is a picture of a 428CJ I'm building for my 69 Mustang. Not only are the plugs deburred, they are indexed.
Ive never thought about it before, but I would assume that they would burn off. Maybe not right away..? Would they cause detonation ?? I think that if I see that on mine, I will hit 'em with a file.
Nice Race Motor... Used to index them on the Dyno, but only saw onesey twosey in power. Never saw a big enough emprovement in power to make it worth the trouble. But then again, every engine design is different. and trying to get the Dyno to repeat is challange enough. Good luck with your build. Let us know what kind of numbers it makes.....
Yeah the plugs are probably just fine for my stock LS3. I'm just used to looking at every little detail in many of the things I do. The engine in the picture should make something like 550hp and similar torque. The heads are special and CR is 10.7:1 so I am a little sensitive about hot spots in the chambers.
I came here to see if anyone else had some actual experience in the matter that they could share. I shared my engine picture to kind of show that I have some level of knowledge/experience (not just a waxer/polisher which I also sometimes am). Rightly or wrongly I kinda got a sense of dismissiveness. I don't frequent forums often but when I do, it's to learn something or share what I might be able to offer. I learned something from Josephu's comments. Thanks. What did you come here for?
I never paid attention to this before.
I think you are prudent deburring those edges and don't see any harm in do so.
Light torch as option may even be the best way.
Thanks for pointing this out, I may pay attention on my next plug change.
+ 1 for indexing.
Time consuming on a Vette in situ.
It's a hobby why not?
Indexing Harley twins; that is great fun and easy.
Yes indexing will gain you a full 1/10 of a horsepower increase and also increase you fuel economy 1/10 mpg
Have not changed plugs in a long time since the change frequency has increased with the newer vehicles.
I have never noticed an actual burr on the electrode of a plug before. I will look the next time I do change them though.
The lack of quality control is concerning in the mfg process to allow the burred electrode to be assembled to the plug and to allow it out the factory door for sale.
Sign of the times.
Light careful swipe with a jewelers file should take care of it.
Nothing wrong with smoothing/rounding the outside corners of the ground strap with a piece of sandpaper or carefully with a small file. But, do NOT do that on the inside corner next to the center electrode. You want that edge sharp there. That’s where the spark will jump to. That’s the whole idea behind “V-power” and ”Splitfire” or some of the gimmicky multi-faceted or multiple-strap plugs: the more sharp edges you have adjacent to the center electrode, the better the plug will fire. A plug with rounded corners on the inside of ground strap is a worn-out plug.
I also don’t think it’s necessary on a regular not FI car. But I did the same thing just yesterday with the welding slag on the ground straps on a set of Denso Iridium plugs I installed in my car. Because when you’re running boost and nitrous, any unnecessary sharp edge in the combustion chamber can become an inadvertent ”glow plug”. I doubt it was necessary, but being **** about small things like that never hurt, especially when you’re pushing the limits of a stock bottom end. This is how they came out of the box. A bit messy looking with excess slag on the back of the ground strap. A careful couple of strokes with a small file cleaned it up nicely.
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Yet another spark plug question
