Spark plug help

GoldenMotor.com

MotoMagz

Well-Known Member
Aug 2, 2010
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Michigan
Ok I have two Lifan's f152 which both came with a long plug like a car.I noticed that a member here had a shorter plug both top and the bottom threads are shorter 1/8".All the mini bike forums call this a Doodlebug or a db30 engine and take the smaller plug.The lifan f152 I have is a clone GX100 which takes a longer plug.My engine looks exactly like the Db30 not the Gx100My question is can I use the shorter plug ??? It does run with both.