Spark plug skyhawk 48cc

ElUnoSpeedy · Apr 28, 2009

Hello, im after a spark plug to suit the skyhawk 48cc, i bought a ngk bp6hs but found the thread too long, maybe its an aussie thing, the closest i could find was a ngk b5es, not sure if the numbers mean anything too but the thread length was the same, ta guys any info would be great.. auflg

Ghost0 · Apr 28, 2009

How did you determine that the threads were too long? Is it because the tip of the plug hit the piston or just because it was longer than the stock one?

ElUnoSpeedy · Apr 28, 2009

Ghost0 said:
How did you determine that the threads were too long? Is it because the tip of the plug hit the piston or just because it was longer than the stock one?

I just compared it to the original, and the threadn thickness was different too, wouldnt screw in, i am assuming that if it were longer it would hit the top of the piston, thats why the thread had to be the same length.

oylavabeer · Apr 29, 2009

set the gap then reinstall , push the bike so the piston dose at least 1 revolution then pull the plug and check the gap that is what I did after my concerns regarding the same issue ( it runs fine )

Rayzor · Apr 29, 2009

try the NGK B5HS...

i got the same kit as you and i run that, really smooth riding now, and a noticeable performance increase ove the stock autolites brnot

Shadeslay · Apr 29, 2009

NGK B5HS or B6HS depending on your climate. The 5hs is the cooler plug, 40-80 degrees, the 6hs is for 80-110 ambient temps "according too SBP"

ElUnoSpeedy · Apr 29, 2009

Shadeslay said:
NGK B5HS or B6HS depending on your climate. The 5hs is the cooler plug, 40-80 degrees, the 6hs is for 80-110 ambient temps "according too SBP"

Ok thanks for the help, much appreciated..

Pablo · Apr 29, 2009

ElUnoSpeedy said:
i bought a ngk bp6hs but found the thread too long, maybe its an aussie thing, the closest i could find was a ngk b5es, not sure if the numbers mean anything too but the thread length was the same,.........I just compared it to the original, and the threadn thickness was different too, wouldnt screw in, i am assuming that if it were longer it would hit the top of the piston, thats why the thread had to be the same length.

All the plugs mentioned - the BP5HS, BP6HS, B5HS, B6HS have EXACTLY the same threads and exactly the same thread length (depth 1/2")

A BPES WILL have too long threads (3/4")

Try this: NGK Part # key

So if you bought an ES and the thread length is the same as a HS, I would take the HS back for a refund.

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Spark plug skyhawk 48cc

ElUnoSpeedy

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oylavabeer

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