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Old 06-07-2013, 04:30 PM   #1
hemetaj
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Spark plugs for Ti-VCT

Does anyone know if there is aftermarket plugs yet for the Ti-VCT engine? I would like to upgrade mine and can't seem to find any listed online other than the Ford plugs.


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Old 06-07-2013, 04:33 PM   #2
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Only iridium plugs right now. No coppers yet
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Old 06-07-2013, 04:37 PM   #3
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Any word on Pulstars?
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Old 06-10-2013, 04:37 AM   #4
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Quote:
Originally Posted by Joeywhat View Post
Only iridium plugs right now. No coppers yet
Why would you want copper, faster wear, weaker-less accurate spark, and picks up the carbon faster. From what I've heard, the iridium plugs paired with the stock coil packs actually has a noticible gain in mpg and slight increase in power on a DYNO (1-2hp).
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Old 06-10-2013, 05:50 AM   #5
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Quote:
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Any word on Pulstars?
why would you want to put that crap into your car? Spark plugs are not a modification .... imho.
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Old 06-10-2013, 02:46 PM   #6
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Been there done that. The stock ones are fantastic iridium fine tip and will have the best performance and wear. I've spent hours trying to find anything better and...nope. We actually have great plugs! Change out the aluminum wire inside the coil boot to a full copper strand (8ga I believe) and do better that way. Play with the stock gap and higher gaps if you want to play around with things (use a proper gapping tool, not a ring gapper that only opens them up).
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Old 06-11-2013, 06:12 AM   #7
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I using BRISK ER14YS SILVER.
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Old 06-11-2013, 06:33 AM   #8
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Quote:
Originally Posted by Tjrommel View Post
Why would you want copper, faster wear, weaker-less accurate spark, and picks up the carbon faster. From what I've heard, the iridium plugs paired with the stock coil packs actually has a noticible gain in mpg and slight increase in power on a DYNO (1-2hp).
In the zetecs, svts and duratecs (03-11), everyone had the best luck with properly gapped coppers. Not just stock, but pretty extensive builds.
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Old 06-11-2013, 06:36 AM   #9
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I using BRISK ER14YS SILVER.
I wonder how there LGS plug would work
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Old 06-14-2013, 11:53 AM   #10
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Quote:
Originally Posted by kylesvt720 View Post
In the zetecs, svts and duratecs (03-11), everyone had the best luck with properly gapped coppers. Not just stock, but pretty extensive builds.
True.

The platinums provide a weaker spark than the coppers do. Also gapping them out a little further than spec (55 instead of 50) provides a larger spark. And really, so what if you have to replace plugs once a year? It takes a whole, what, 20 minutes?

Quote:
Copper Spark Plugs

Copper spark plugs are generally considered to have the best performance of any spark plug type. This is potentially different from what advertising companies suggest, but the other metals are, unfortunately, not as conductive in general as copper is. Platinum and iridium plugs are more likely to overheat, which causes damage to the plug components and can compromise the delivery of the spark to the engine block.

Platinum and Iridium Plugs

Platinum and Iridium plugs perform at a lower level than copper spark plugs, because they are less conductive and they tend to overheat. However, the overall longevity of these two types of metal is better than copper plugs. In reality, copper has the best performance of all three and the worst longevity. Platinum has good longevity and the worst performance. Iridium has good longevity and a performance that is decent, which is why iridium plugs tend to be more expensive than any other type. Still, the difference between these plugs in terms of overall quality is minimal, as there is a trade off for each.

Here are some of the thermal conductivity ratings of some commonly used metals (Watts / centimeter*Kelvin). As you can see, copper is untouchable. Iridium gives you the best trade-off between performance and lifespan.


Zinc = 1.16
Aluminum = 2.37
Copper = 4.01
Steel = 0.70 - 0.82
Platinum = 0.716
Iridium = 1.47
However, different engines and systems will work better/worse on different types of plugs. Some older Dodge Neons REQUIRED Coppers (they had a TSB concerning the use of Champion Copper's ONLY because other types caused rough/poor idle conditions)

Another issue with the Duratecs is that the copper plugs seem to smooth out the idle and reduce engine vibration. The HP gains? I'm not willing to say if that's true or not, but a good set of plugs can definitely smooth out idle issues and increase fuel mileage.
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