Thread: Spark plug gap?
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Old 07-31-2014, 09:49 PM
rogergendron1's Avatar
rogergendron1 rogergendron1 is offline
Motorized Bicycle Elite Member
Join Date: Sep 2013
Location: woburn ma
Posts: 882
Default Re: Spark plug gap?

this is debatable

i change gaps and plugs depending on the sintuation i am in and compression of the motor.

the higher the compression the harder it is to ignite the fuel so a stronger spark is needed or you will get miss fires, an easy way to get a stronger more reliable spark especialy with a weak ignition syst like ours is to close up the gap... a smaller gap makes a stronger and more reliable spark but it wil be slightly smaller

a larger gap will misfire under high comp but because of its longer spark it ignites more of the fuel faster and more compleatly under lower compression ratios

if your running stock compresion and do not have a x chamber to raise dynamic comp then go with a standard gap of .025 but going to 30 could net you better gas milage, you should gap it as large as you can without afecting the reliability of the spark and the ignition of the fuel

also iridium plugs do work wonders and seem to stay clean and are more forgiving in thease motors. they are a must under super high comp 12:1 and over
here to stay and compleatly insane ! deal with it lol

Last edited by rogergendron1; 07-31-2014 at 09:52 PM.
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