2001Rm125 said:i thought 10 was hotter?
2001Rm125 said:the right plug was like 30 bucks
FruDaddy said:madmike could be right. If he is, then you aren't riding as hard as you think that you are (most people think that they are pushing their equipment). In simplified terms, the heat range is the temperature that the plug must reach before it can burn off the deposits from combustion. If you cannot keep the revs up, then the engine will not reach the necessary temp, and a lower number is required, this was the case on my 250 smoker. Factory asked for an 8, but I could only get two rides out of them while a 7 lasted over a year. Realistically evaluate your riding style before deviating from the factory plug. If you want to know what all of those letters mean, check out the NGK website.
BTW, the last time I needed a 10, it was for my son's 65. When ridden correctly 85-125's usually need 9s, and 250s seem to like 8s. This is only a 2-stroke rule of thumb, not a finite answer, riding style (among other things) actually dictate which plug is best for a given machine.
2001Rm125 said:i cant find the jettinng forum...the guy i bought the bike off of said he jetted the bike for the FMF Fatty and powercore2
click here Jetting Thread2001Rm125 said:i cant find the jettinng forum...the guy i bought the bike off of said he jetted the bike for the FMF Fatty and powercore2
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