turbo civic whats better hot or cold spark plugs

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04-08-2006, 10:33 PM

tunerdood

0.0 BAR

Thread Starter

Join Date: Apr 2006

Posts: 47

turbo civic whats better hot or cold spark plugs

ive got a turbo d16y7 and need advice on spark plugs

04-08-2006, 10:51 PM

StanB

1.5 BAR

Join Date: Sep 2003

Posts: 842

Re: turbo civic whats better hot or cold spark plugs

Because the engine is running hotter due to the turbo, you need colder plugs. I've read some information that stated for every 100 hp increase over stock hp you should go 1 step colder with the plugs. However, I don't forsee any problem(s) running 2 step colder plugs if the hp increase over stock is less than 100. With regards to NGK, the higher the number the colder the plug. Some people use NGK BKR7e-11 or BKR7es-11.