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Old 04-01-2012, 08:34 AM   #1
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K, I'm starting with an '07 block, doing an eagle head swap with .08 head gaskets, so compression ratio should be in the 10.7-10.8 range. I will also be running a Zex kit through an 85mm Nitrous Outlet plate and building up to a 125-150hp shot for track days. I'm pretty set on the nitrous side of things, I'm just wondering what plugs I should be running, whether I should be running 1 step colder or 2 steps colder. I will be running 91 octane and will have a nitrous tune done by Johan (most likely), but I keep flip-flopping over my plug choice given the slightly higher compression ratio from the head swap.

Basically I just need to know if I'll be fine with the 1 step, or if I'm just safer with the 2 step colder.

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Old 04-01-2012, 08:34 AM   #2
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K, I'm starting with an '07 block, doing an eagle head swap with .08 head gaskets, so compression ratio should be in the 10.7-10.8 range. I will also be running a Zex kit through an 85mm Nitrous Outlet plate and building up to a 125-150hp shot for track days. I'm pretty set on the nitrous side of things, I'm just wondering what plugs I should be running, whether I should be running 1 step colder or 2 steps colder. I will be running 91 octane and will have a nitrous tune done by Johan (most likely), but I keep flip-flopping over my plug choice given the slightly higher compression ratio from the head swap.

Basically I just need to know if I'll be fine with the 1 step, or if I'm just safer with the 2 step colder.
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Old 04-01-2012, 08:57 AM   #3
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IMO safer than is always better sacrifice a little power for longevity every time
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Old 04-02-2012, 05:29 AM   #4
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Old 04-02-2012, 05:37 AM   #5
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That was what I was leaning towards, just wanted confirmation, thanks guys
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