Sean, recall watching something on TV (insomnia at 2 am) about flex fuel engines, Octane rating of E85 and how high compression and heat contribute to getting the most out of higher octane, which isn't much.
Now, with that said, here is my disclaimer: I COULD BE WAY THE HELL OFF BASE ON THIS.
You had mentioned the delay in the firing of the top copper plugs and the lower irridium plugs. I'm "wondering", is this to get a more complete burn on the ethanol if someone actually decides to run E85 through their engine?
Example: Top plug fires and ignites fuel/air mixture. Bottom plug fires to complete the burn.
If I remember correctly, the manual states copper on top and iridium on the bottom. I've heard the material provides less resistance, allowing for larger plug gap, resulting in larger spark. I've also "heard" platinum and iridium both last longer.
If this is true, then here is something to consider: The manufacturer was saving money by throwing copper plugs on top. If, as you mentioned earlier, the top fires first, quickly followed by the bottom, based on the angle of the cam, then the type of plug shouldn't matter. The plug is just the light bulb. Something else is hitting the light switch.
I've thought about switching to platinum when I change out the top plugs just to make them last longer. I've heard the bottoms are a real pain in the @$$ to change out.
This is just my thought bordering on theory, based on scientific wild ass guessing.
Now, with that said, here is my disclaimer: I COULD BE WAY THE HELL OFF BASE ON THIS.
You had mentioned the delay in the firing of the top copper plugs and the lower irridium plugs. I'm "wondering", is this to get a more complete burn on the ethanol if someone actually decides to run E85 through their engine?
Example: Top plug fires and ignites fuel/air mixture. Bottom plug fires to complete the burn.
If I remember correctly, the manual states copper on top and iridium on the bottom. I've heard the material provides less resistance, allowing for larger plug gap, resulting in larger spark. I've also "heard" platinum and iridium both last longer.
If this is true, then here is something to consider: The manufacturer was saving money by throwing copper plugs on top. If, as you mentioned earlier, the top fires first, quickly followed by the bottom, based on the angle of the cam, then the type of plug shouldn't matter. The plug is just the light bulb. Something else is hitting the light switch.
I've thought about switching to platinum when I change out the top plugs just to make them last longer. I've heard the bottoms are a real pain in the @$$ to change out.
This is just my thought bordering on theory, based on scientific wild ass guessing.
