What spark plug for high comp bbk?
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What spark plug for high comp bbk?

This is a discussion on What spark plug for high comp bbk? within the Grom Performance forums, part of the Honda Grom Garage category; What spark plug are you guys running (in the stock head) for a 164-180cc bbk with a 11.1+:1 compression? Currently running the optional one cooler ...

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Thread: What spark plug for high comp bbk?

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    What spark plug for high comp bbk?

    What spark plug are you guys running (in the stock head) for a 164-180cc bbk with a 11.1+:1 compression?

    Currently running the optional one cooler CPR7EA-9 on the stock 125cc, but i have a bbk coming and was wondering if i should go one more notch up to CPR8EA-9?

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    Im using a ER8EHIX. Except thats because the Koso head needs a CR/ER with its 8mm threads. (i think the first letters are the threads)

    But anyway. Id go up to an 8, and even switch over to an iridium one. even if they dont work any better, that extra 7$ i spent makes me feel better.
    Per my discussions with Brian, when I asked him about going to an 8, he suggested it himself.

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    yeah im considering the 8 just cus its high comp, but didnt know if it was going to be worth while, already have a 7 in there thats pretty much brand new!

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    I'm using this one: http://www.amazon.com/NGK-4218-4PK-I...ilpage_o04_s00

    Bonus: Also fits my girlfriend's Yamaha Bolt!

    Seems to be fine so far.

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    My grom has a CR8E in it now and it works great.
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