Non OEM Spark Plugs

[kenimpzoom]

Has anyone changed to non stock spark plugs?

I only saw AC Delco and Autolite offer spark plugs, are there any others available?

 

[Savage_383]

I put Autolites in mine. seems to run quite a bit better.

 

[Machine]

i generally dont recommend running anything but factory plugs, in ANY vehicle, unless power gains reach the 25-30% mark. Spark plugs are VERY specific to there application.

I see all these add for outrageous claims of power and economy, with multi electrodes and the whatnot. Usually these things just cause more problems than anything. If you do want to upgrade, use the same factory brand, and go a range colder and see what happens.

I will look it up on the GM service info website.

GM factory spark plug GM part# 55580961
AC Delco factory replacement Part# 41–117

Now, further searching on Google, it seams that this is an Iridium Plug (as opposed to a copper one like in the aveo, which was the only gm car I know of that didnt have iridium)

Iridium plugs are pretty much as good as it gets, and they cannot be gapped. I will confirm this with parts tomorrow, but best bet is just going a range cooler if your running a tune with a few other mods and you are on it ALL THE TIME, or AutoX etc. Otherwise, I would leave it alone.

But I will check tomorrow.

 

[Machine]

Checked with Parts department and came up with something different.

AC-delco 41-121
GM original 55585517

it does not list it as being iridium, and FYI, when I looked up the 1.8 plug, it was one number different and it did say Iridium in the description.

cant look into it to much further here at work, but with this new numbers, Ill see what I can come up with later this afternoon.

 

[Savage_383]

i generally dont recommend running anything but factory plugs, in ANY vehicle, unless power gains reach the 25-30% mark. Spark plugs are VERY specific to there application.

I see all these add for outrageous claims of power and economy, with multi electrodes and the whatnot. Usually these things just cause more problems than anything. If you do want to upgrade, use the same factory brand, and go a range colder and see what happens.

I will look it up on the GM service info website.

GM factory spark plug GM part# 55580961
AC Delco factory replacement Part# 41–117

Now, further searching on Google, it seams that this is an Iridium Plug (as opposed to a copper one like in the aveo, which was the only gm car I know of that didnt have iridium)

Iridium plugs are pretty much as good as it gets, and they cannot be gapped. I will confirm this with parts tomorrow, but best bet is just going a range cooler if your running a tune with a few other mods and you are on it ALL THE TIME, or AutoX etc. Otherwise, I would leave it alone.

But I will check tomorrow.

The only reason I changed spark plugs was because I was jacking with the originals when the whole spark plug gap issue was being discussed. Mine all had different gaps so I was trying to re gap one and busted the tip off. I wasn't about to take the car to the dealer for that since they are a warranty nazi. lol

I went to the auto parts store and the GM part number can up with the Iridium autolites. They look exactly like the originals.

I gaped them all the same .028 I believe and it is running a lot better than it was. Before it would start spitting at high loads.

 

[Lovehanayo]

The only reason I changed spark plugs was because I was jacking with the originals when the whole spark plug gap issue was being discussed. Mine all had different gaps so I was trying to re gap one and busted the tip off. I wasn't about to take the car to the dealer for that since they are a warranty nazi. lol

I went to the auto parts store and the GM part number can up with the Iridium autolites. They look exactly like the originals.

I gaped them all the same .028 I believe and it is running a lot better than it was. Before it would start spitting at high loads.

Autolite iridium is going to be just about as good as AC delco.

Just don't get those E3 diamond technology spark plugs. They're crap

 

[rdss]

The E3's actually are pretty good in carb'd cars and yard equipment.

 

[Lovehanayo]

The E3's actually are pretty good in carb'd cars and yard equipment.

They're good for dodge/jeep/Chrysler cars. I dont know about lawn equipment as never had to replace one.

But everyone else who has used them usually hates them if they didn't have dodge/chrysler car.

I've never seen another brand be so fickle with 80% of cars and only work on a minority of them.

I always go with the brand that's recommended for them.

AC delco - Chevy
Motorcraft - ford
NGK - import
Bosch - German
Champion - Chrysler/dodge/jeep

 

[rdss]

Nice, I didn't know they worked in the DCM cars. I've always read that they dont work well on modern fuel injected cars. I know they push them hard on the Power Block on Spike but they sponsor them.