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Old 08-16-2012, 09:30 AM   #1
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Laser Spark Plugs

Anyone ever use 'em?

If so, results?
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Old 08-16-2012, 09:34 AM   #2
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Just use motorcraft/autolite copper plugs. Anything else is just wasting money
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Old 08-16-2012, 09:45 AM   #3
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Re: Laser Spark Plugs

Very good. I appreciate it
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Old 08-16-2012, 09:56 AM   #4
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Re: Laser Spark Plugs

I know the whole subject of sparkplugs can become a wild internet conversation, but imho, i'd stay away from autolite.
I run 28 lbs of boost in my other mustang and have had multiple failures of autolite plugs through the years. I've stayed away from them since.
Now if you're looking for a great plug that lasts long, get some platinum plugs. You can't go wrong. (they just dont work so well on boosted applications).
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Old 08-16-2012, 10:02 AM   #5
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Re: Laser Spark Plugs

Quote:
Originally Posted by Mike SVOR View Post
I know the whole subject of sparkplugs can become a wild internet conversation, but imho, i'd stay away from autolite.
I run 28 lbs of boost in my other mustang and have had multiple failures of autolite plugs through the years. I've stayed away from them since.
Now if you're looking for a great plug that lasts long, get some platinum plugs. You can't go wrong. (they just dont work so well on boosted applications).
I've been told that even though platinum can and probably will last up to twice as long as copper, they can also be more fragile.

How does that play out in a place like Michigan where we go sub-arctic temps by October?
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Old 08-16-2012, 10:07 AM   #6
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Quote:
Originally Posted by Mike SVOR
I know the whole subject of sparkplugs can become a wild internet conversation, but imho, i'd stay away from autolite.
I run 28 lbs of boost in my other mustang and have had multiple failures of autolite plugs through the years. I've stayed away from them since.
Now if you're looking for a great plug that lasts long, get some platinum plugs. You can't go wrong. (they just dont work so well on boosted applications).
I'm pretty sure op isn't running 24lbs of boost. Personally I run ngk tr6 copper plugs
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Old 08-16-2012, 10:43 AM   #7
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Quote:
Originally Posted by lowflyn

I'm pretty sure op isn't running 24lbs of boost. Personally I run ngk tr6 copper plugs
Not only that, but copper is proven time and again the best choice.
Platinum plugs suck.
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Old 08-16-2012, 10:43 AM   #8
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Re: Laser Spark Plugs

Quote:
Originally Posted by AK6 View Post
I've been told that even though platinum can and probably will last up to twice as long as copper, they can also be more fragile.

How does that play out in a place like Michigan where we go sub-arctic temps by October?
More fragile? They're made with porcelain and platinum.
Porcelain like normal plugs and platinum like what’s in your cats.
Not sure how they'd fail in cold weather. Never heard that one before.
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Old 08-16-2012, 10:50 AM   #9
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Re: Laser Spark Plugs

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Originally Posted by Mike SVOR View Post
More fragile? They're made with porcelain and platinum.
Porcelain like normal plugs and platinum like what’s in your cats.
Not sure how they'd fail in cold weather. Never heard that one before.
That's why I take my time, because I don't know enough on my own. But I'm learning. Plus, I learn from guys like you.

How about if my OEM calls for iridium (non-mustang), can I switch to copper?

Or should I stick with what the oem calls for?
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Old 08-16-2012, 10:51 AM   #10
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Re: Laser Spark Plugs

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Not only that, but copper is proven time and again the best choice.
Platinum plugs suck.
Please elaborate on how platinum plugs suck.

They come factory equipment on MANY cars and outlast copper in wear/erosion.
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Old 08-16-2012, 10:56 AM   #11
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Re: Laser Spark Plugs

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Please elaborate on how platinum plugs suck.

They come factory equipment on MANY cars and outlast copper in wear/erosion.
I just found that article. Definitely didn't say they suck, just that "the overall performance will not be as good and you may have to deal with overheating of the plugs."

Here the guys in the comments get on him a little bit too

And that's exactly why I seek out multiple opinions

I don't remember where I saw the weather thing, maybe my imagination.
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Old 08-16-2012, 11:06 AM   #12
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Quote:
Originally Posted by AK6

I just found that article. Definitely didn't say they suck, just that "the overall performance will not be as good and you may have to deal with overheating of the plugs."

Here the guys in the comments get on him a little bit too

And that's exactly why I seek out multiple opinions

I don't remember where I saw the weather thing, maybe my imagination.
Exactly... I burnt a set of Bosch platinums down in a months time. They are snake oil IMO and you are welcome to 'my share'..
I don't and won't have any links to others opinions or anything of that nature, just my exp over the years..
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Old 08-16-2012, 11:12 AM   #13
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Re: Laser Spark Plugs

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Originally Posted by AK6 View Post
I just found that article. Definitely didn't say they suck, just that "the overall performance will not be as good and you may have to deal with overheating of the plugs."

Here the guys in the comments get on him a little bit too

And that's exactly why I seek out multiple opinions

I don't remember where I saw the weather thing, maybe my imagination.
I was quoting deadsp0t's post on his "suck" comment.

The info in that link you posted should probably be taken with a grain of salt.
He's saying copper doesn't melt like platinum plugs do. LOL
BIG difference in copper and platinum melting points.

but anyways....
I'm a copper plug fan and only put platinum into my stock truck so I don't have to change them for a while.
I run copper in everything else.
A nice set of NGK plugs should last 30 to 50 K miles. Realistically, i've pulled out copper plugs from people's cars with 100K on them.
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Old 08-16-2012, 11:26 AM   #14
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Also for what it's worth I pulled the oem platinum plugs from my focus at 50k and replaced with autolite coppers. Over the last 33k miles I have averaged the same or better fuel economy.
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Old 08-16-2012, 11:31 AM   #15
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Re: Laser Spark Plugs

that's worth a lot actually

thanks

guess I'm learning to BEWARE THE HYPE
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Old 08-16-2012, 07:27 PM   #16
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Quote:
Originally Posted by Mike SVOR

I was quoting deadsp0t's post on his "suck" comment.

The info in that link you posted should probably be taken with a grain of salt.
He's saying copper doesn't melt like platinum plugs do. LOL
BIG difference in copper and platinum melting points.

but anyways....
I'm a copper plug fan and only put platinum into my stock truck so I don't have to change them for a while.
I run copper in everything else.
A nice set of NGK plugs should last 30 to 50 K miles. Realistically, i've pulled out copper plugs from people's cars with 100K on them.
So you like copper or platinum?
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Old 08-17-2012, 10:11 AM   #17
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Re: Laser Spark Plugs

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So you like copper or platinum?
I use both.

Since I go through plugs every 6 months in my turbo mustang, I run a #8 NGK standard plug. I've actually never tested platinum on that car so I can only relay what others at theturboforums have documented in their use on boosted cars.

On my 84 stang, when it was naturally aspirated, i ran the msd with an accel supercoil. It would go through standard plugs once a year. That was a heavy duty spark coming out of that setup. I put platinums in and they lasted 2 yrs until I broke one taking the headers off. Ran standard plugs after that looking for a heat range change.

For my f150 platinum were factory equipment, and they lasted 115k miles before I changed them out. So they worked great in that scenario.

Like I said previously, theres nothing wrong with them on a stock to lightly-modded (non-boosted) engine. They last way longer than standard plugs and for the person that doesn't have a time or the tools to change plugs, taking it in for a plug change to platinum ensures you wont have to do it again for a long time.

and IIRC the older cobras came stock with platinum plugs also.
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