Will spark plug ngl bp4hs work on a 80cc moter kit and the old plug was a ac

[Phammann]

Will spark plug ngl bp4hs work on a 80cc moter kit and the old plug was a z4c I went to my local shop but all they had was a BP4HS NGK it says is a substitute is b5hs but I read the specs and everything is the same except the heat with the still work

 

[wrench]

Will spark plug ngl bp4hs work on a 80cc moter kit and the old plug was a z4c I went to my local shop but all they had was a BP4HS NGK it says is a substitute is b5hs but I read the specs and everything is the same except the heat with the still work

NGK heat range #4 is too hot, most use #6 for a 66/80cc 2 stroke motorbicycle engine

 

[Venice Motor Bikes]

I concur with Wrench... Use a #6 NGK plug