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Discussion Starter #1
Have any of you used these Index washers? They're supposed to align the electrode of your plugs to the intake side of the cylinders for better combustion. Are they junk or for real?

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well that depends on how serious you are about tuning.
for the average person its not gonna make any diff.
but if your racing, every little but helps.
 

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I tried them on my 95 xcr 600. I noticed no gain on the clock or radar.
 

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They are mainly used in 4 cycle engines. 2 cycle engines do not get the fuel charge directly from the intake port like a 4 cycle. A 2cycle's fuel charge is sent from the intake port into the crankcase then it has transfer ports that bring the fuel charge up from the crankcase, therefore indexing the spark plugs does not do anything as the fuel charge is comming into the cubustion chamber in many directions.
 

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Discussion Starter #5
Good answers, Thanks. My $6 can be used elsewhere!
Thanks
 
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