reepicheep
Member
- Apr 3, 2009
- 670
- 2
My KDX-220 uses the stock NGK plug, $2.50 or whatever, rarely foul, life is good.
My son's KX-60 however uses a "race" NGK plug, that fouls all the time and costs $6 a pop. :(
If I decode the NGK product information, aside from the heat range difference (the KDX is an 8, the KX 60 is a 9), the other difference is that the KX plug is a fancy nickel alloy electrode.
NGK makes that exact same plug in a non nickel alloy electrode format (same heat range), for half the price.
So question 1 is the simple one... if my son was racing MX against Bubba Stewart and trying to pass him while jumping a triple, I'd want him to have gold plated nickel alloy spark plugs. And something other than a KX-60. :)
But we just ride around in the woods and play. So are there stealth reasons I can't use the non unobtanium plugs and just run the same style NGK's (with the proper heat range) that work so well on the KDX?
Second question... aside from the heat range, the plugs are the same. The KX is a NG9, the KDX is an NG8. So the heat difference is fairly minor. We ride together, so if we both ran the same plugs, I could carry a fewer different spares while we are out and buy them in bulk.
So if I switch the KX to the cooler plug, will I just have to jet accordingly, and maybe loose a little peak HP, and maybe warm up slower? If so, I would just run the same plugs in both bikes.
Any guru's with opinions? Thanks!
My son's KX-60 however uses a "race" NGK plug, that fouls all the time and costs $6 a pop. :(
If I decode the NGK product information, aside from the heat range difference (the KDX is an 8, the KX 60 is a 9), the other difference is that the KX plug is a fancy nickel alloy electrode.
NGK makes that exact same plug in a non nickel alloy electrode format (same heat range), for half the price.
So question 1 is the simple one... if my son was racing MX against Bubba Stewart and trying to pass him while jumping a triple, I'd want him to have gold plated nickel alloy spark plugs. And something other than a KX-60. :)
But we just ride around in the woods and play. So are there stealth reasons I can't use the non unobtanium plugs and just run the same style NGK's (with the proper heat range) that work so well on the KDX?
Second question... aside from the heat range, the plugs are the same. The KX is a NG9, the KDX is an NG8. So the heat difference is fairly minor. We ride together, so if we both ran the same plugs, I could carry a fewer different spares while we are out and buy them in bulk.
So if I switch the KX to the cooler plug, will I just have to jet accordingly, and maybe loose a little peak HP, and maybe warm up slower? If so, I would just run the same plugs in both bikes.
Any guru's with opinions? Thanks!