Spark Plug Heat Range in SOHC - Ranger-Forums - The Ultimate Ford Ranger Resource


4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 05-13-2010
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Icon5 Spark Plug Heat Range in SOHC

Im going to change my stock plugs this comming week but I see there are diffrent heat ranges. What heat range should I go with and whats the stock range.

I want to change them to denso iridiums...
http://shop.advanceautoparts.com/web..._1154330392___
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Old 05-13-2010
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Somone will correct me if I'm wrong...but I think that link is the stock heat range...16.

IT16 5325 is the Denso Information.
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Old 05-13-2010
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Quote:
Originally Posted by logan03CO View Post
Somone will correct me if I'm wrong...but I think that link is the stock heat range...16.

IT16 5325 is the Denso Information.
Thats what I think but still need more info about this lol
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Old 05-13-2010
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Unless your engine has serious mods..or nitrous, you should just get the stock heat range..you wont notice anything different.

I have those exact Denso's sitting next to me right now...waiting on the Screamin' Demon coil pack & wires to install everything at once.
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Old 05-13-2010
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Yeah im gonna run those iridiums, 8mm wires and SD coil pack. just want to make sure its stock heat range though.
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Old 05-15-2010
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anybody?
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Old 05-15-2010
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^i wouldnt go messing with your ignition system....just leave it as it is and put factory plugs and wires back in it
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Old 07-23-2011
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what is the stock heat range?
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