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Discussion Starter · #1 ·
I have heard that the NGK spark copper plugs are good for the altima...

Is there like a serial number or something to identify the correct NGK plugs ?

There must be different kinds ....

I don't want to get a colder or hotter plug than I need.

I don't have mods just stock.

Or should I consider other plugs ?


Thanks
 

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Import Tech.
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You will want to run NGK # BKR6E-11 / stock # 2756 , gaped to .045 in. for stock performance .047 in. for best performance ..
 

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Discussion Starter · #4 ·
Hey guys,

before anybody answered me I Purchased the NGK plugs and he gave me BKR5E-11 stock 6953.

Somebody told me a differente stock number.

Should I put them in or go change it at the store ?

Are this colder or hotter plugs than usual ?

Thanks
 

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Import Tech.
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Yea the stock plugs are BKR5E-11 , but if you are looking for performance get the colder BKR6E-11 ...
 

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Resident Economist
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Shawn, any down sides to running a colder plug gapped as you say? I want to try this, for performance but was curious about side effects. Thanks. Later
 

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UKAlty said:
Shawn, any down sides to running a colder plug gapped as you say? I want to try this, for performance but was curious about side effects. Thanks. Later
Note: the last number before the dash signifies the temp rating of the plug. 5 is the stock rating and 6 is one step colder.

Go to the NGK website for explainations of hot and cold. http://www.ngksparkplugs.com

As for side-effects to running a colder plug? A colder plug will absorb more heat from the combustion chamber, thus run the chamber cooler and will allow you to run a hotter charge (leaner), while a hotter plug will run at a higher temp and increase the chance of detonation. you can run higher compression and more advanced timing with a colder plug and lower your chance of pre-ignition.

Basically, a colder plug is for a higher performance engine.

Randy
 
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SHAWN said:
Yea the stock plugs are BKR5E-11 , but if you are looking for performance get the colder BKR6E-11 ...
it says under FAQ on the site that using racing spark plugs(BKR6E-11) wont do nething unless you have a racing engine and it might even be too much for the car...anybody have any comments?
 

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Import Tech.
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There are no side effects on running the 6's ... If you were to lets say run 7's then you could have a problem with them fouling if you do lots of stop and go .. The one step colder plug will help prevent predetonation under hard use even on a stock engine ... And as we all know , all it takes is one hit of pinging and the ECU drops the timing 3 degrees , which kills performance ... I have always ran the 6's in my Altima .. I am trying to find 7's for the new engine ....
 
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