mac .67
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hello guyz i just bought a mac .67. im not sure what the plug is, the plug in her now looks weird. can someone tell me what kind of plug to use in this motor. thank you
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ORIGINAL: Dan S
OS, McCoy's, K&B will all work.
now as to which number to use will depend on what nitro% you plan on using.
Dan.
OS, McCoy's, K&B will all work.
now as to which number to use will depend on what nitro% you plan on using.
Dan.
There is a trick I learned long ago. That is heat the plug up then let it cool completely several times before using them. It tempers the coil and they last longer.
If you get the right head shim, nitro content and needle setting a plug should last a long time.
Daniel
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thank you guyz, one more thing what would the needle setting be i cant find it on the web. i guess ill start at like 3 turns out and go from their. let me know