where can i get gapped spark plugs

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danny mage

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hey so what kind of spark plugs do i need for MAX POWWWERRR!!! lol what kind of gap do they need and where can i but them pre gapped?
 

Livernois Motorsports

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OmaHahn

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Do it yourself! Take your current plugs and gap them to .30 or .28 - depends on your tune and other mods.
 

SHOdded

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Motorcraft SP534 plugs work just fine, gap them to 0.030 for LME tunes and 0.028 for Unleashed tunes. An alternate proven plug is the NGK Iridium ix LTRR71X-11 stock # 6510.

You can get either plug practically anywhere online at major auto stores including Advance Auto, O'Reillys, Amazon, etc.
 

SHOdded

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danny mage

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got it, and can i only get the thermostats on unleashed or LMS site?
 

danny mage

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no problem, but you cannot fault me on new spark plugs for 60 dollars cheaper, plus i work in Detroit so like to support local business
 

Livernois Motorsports

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Any drawbacks to using a 'tune-gapped' plug on a stock tune?

Running colder plugs on an engine will lead to pre-ignition, because the plug gets too hot. I wouldn't run colder plugs in a non-tuned engine, because you won't get any gains and can potentially melt the electrode on the plug, and maybe even cause some premature piston damage.

In all actuality, unless you are adding upwards of 75HP and increasing compression, even a stock plug will work fine when you get a tune.
 

itwonder

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Running colder plugs on an engine will lead to pre-ignition, because the plug gets too hot. I wouldn't run colder plugs in a non-tuned engine, because you won't get any gains and can potentially melt the electrode on the plug, and maybe even cause some premature piston damage.

In all actuality, unless you are adding upwards of 75HP and increasing compression, even a stock plug will work fine when you get a tune.

Please help me understand because I think maybe you have that backwards. Plug operating ranges are ~500-800 degrees C. A colder plug operates at a lower electrode temperature, not hotter. If the selected heat range is too high, the plug ceramic will operate at a temperature in excess of 800 degrees C; that will result in accelerated wear of the electrode, and possibly pre-ignition.
 

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