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Colder plugs - autobox upgrade

Hi Forum,

 

Thanks for the recent advice re: my 92 JDM TT auto. Due to my long journey's 300+ miles 90-100mph (german autobahns of course) and the posts from the forum my car is now booked in for an autobox oil cooler upgrade while I get my EBC sport disc upgrade done. As I was talking to my mechanic he asked me if I wanted cooler iridium plugs fitted as I am also getting a full main service done (minus belts - they were done last month when water pump gave up - RIP). Transmission oil will be replaced, diff oil too.

 

Given my cars spec are the colder plugs a good idea, what will they do? Will they make Detonation less likely? allow the car to run cooler?

 

Spec:

 

92 JDM Twin turbo

Std Injectors

Std Turbos

Mines 'Light tune' ECU

Blitz Air intake

Blitz bost controller occasionally set to 10% additional boost

Injen Hard pipe kit

Stillen Intercoolers & ducts

Std Exhaust (but not for long - probably fitting mongoose soon)

 

HKS ALC shifter

UK spec rear wheels

 

Thanks

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    Colder plugs are det protection. Basically the electrode on the plugs is one of the likeliest hot spots inside the combustion chamber that can cause pre ignition. NGK recommend going one heat range cooler for ecah additional 50-100bhp. I ran ZFR7F-11 copper plugs in mine when I upped the boost with no problems. Think the closest Irridium is BKR7EIX-11, but the projection is not so good.

  • Quote
    • Author
    Colder plugs are det protection. Basically the electrode on the plugs is one of the likeliest hot spots inside the combustion chamber that can cause pre ignition. NGK recommend going one heat range cooler for ecah additional 50-100bhp. I ran ZFR7F-11 copper plugs in mine when I upped the boost with no problems. Think the closest Irridium is BKR7EIX-11, but the projection is not so good.

     

    Thanks I will get them and fit as soon as............

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