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sounds about right.



Conversely, a cold spark plug has a shorter insulator nose and absorbs more combustion chamber heat. This heat travels a shorter distance, and allows the plug to operate at a lower internal temperature. A colder heat range is necessary when the engine is modified for performance, subjected to heavy loads, or is run at high rpms for a significant period of time. The colder type removes heat more quickly, and will reduce the chance of pre-ignition/detonation and melting or damage to the firing end. (Engine temperature can affect the spark plug's operating temperature, but not the spark plugs heat range).
 
Motorcraft Copper plugs - AZFS-22C


these are available at some Ford Dealers, most wont have them, they are about $3-4 ea

chris
 
Thank you I'm going tomnarow to buy the azfs.22c's and install my new coilpack and 9mm wires.
 
Discussion starter · #29 ·
OK- what about this- i read on the NGK web site that using 1-step colder plugs in an engine that doesn't have SERIOUS power adders (i.e. forced induction, etc) can hurt your engine because since the plug is operating at a colder temperature, the tip doesn't get hot enough to get complete burn. this adds to carbon buildup, poor fuel economy, and loss of hp. is this true? or will the mods i have be signifigant enough to use or see a benefit from the 22c 1 step colder plugs? thanks.

eric
 
OK- what about this- i read on the NGK web site that using 1-step colder plugs in an engine that doesn't have SERIOUS power adders (i.e. forced induction, etc) can hurt your engine because since the plug is operating at a colder temperature, the tip doesn't get hot enough to get complete burn. this adds to carbon buildup, poor fuel economy, and loss of hp. is this true? or will the mods i have be signifigant enough to use or see a benefit from the 22c 1 step colder plugs? thanks.

eric
NGK doesn't know what their talking about.
I mean they just manufacture and test spark plugs...j/k


That's the reason I haven't switched to colder plugs.
 
OK- what about this- i read on the NGK web site that using 1-step colder plugs in an engine that doesn't have SERIOUS power adders (i.e. forced induction, etc) can hurt your engine because since the plug is operating at a colder temperature, the tip doesn't get hot enough to get complete burn. this adds to carbon buildup, poor fuel economy, and loss of hp. is this true? or will the mods i have be signifigant enough to use or see a benefit from the 22c 1 step colder plugs? thanks.

eric

hmm...
I am getting the AZFS 22C's for my car (FI), and i might just convince smoke3006 to go with me, cough up some money for the dyno, and try the plugs out (gapped to 0.040") and see if his power changes.
 
So are we saying that the 1 step colder plug, (AZFS-22C), using the stock gap, (.051), will ADD power to a NA Zetec??? I am interested in this, even if it's only a couple of horses, (every little bit helps)..
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Don't try and go to your local Ford Dealer and expect to find some AZFS-22C plugs on the shelf. Mine had to be ordered. After installing them, I have to say the car seems to have a little more (on the but-dyno) power. All-in all I have to say it was $7.00 well spent..
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Its good to hear that
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I just picked up 2 sets and an exh. gasket.... Im gonna throw them in once i get my exhaust setup on and a new chip (SCT
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)...

As soon as i can find a place to dyno (NorCal, East Bay) ill post the final product...
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