Best spark plugs

What is the preferred gap for these engines? I have a 66cc Grubee. The Grubee website recommends .036 so that’s where I’ll start.
 
.036 so that’s where I’ll start.
Really??? They recommend a gap wide enough to drive a Mack truck though???...lol.

Most folks here would tell you to gap at .025...They will also strongly suggest that if that is one of the Chinese Z4C or Z8C plugs, to throw it away and for less than three dollars, buy an NGK-B6HS plug instead...DAMIEN
 
Yeppers, NGK for small motors and jap bikes. OEM for cars.
 
Yeppers, NGK for small motors and jap bikes. OEM for cars.
Hi Darwin...im only gonna give the small version of the "Scarlet Letter" today...lol.

Pontiac787 posted that 8 months ago and reported no further problem...I think its safe to assume he did OK...lol...DAMIEN

Ps...he was Last seen Jun 5, 2021 on the forums...lol.
 
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