Spark plug type/grade

johnnymayhem
New Member

Posts: 1

Spark plug type/grade Jul 22, 2022 17:38:55 GMT

Quote

Post by johnnymayhem on Jul 22, 2022 17:38:55 GMT

I have a Hercules Corvette from 1960. Although I have searched high and low, I cannot find out what grade plug it should have. It has the Lavallette AML 50/2 engine.
I can only guess that it originally had a champion plug of some kind. Hopefully, there is a modern day equivalent?

davwat
Senior Member

Posts: 2,344

Spark plug type/grade Jul 22, 2022 18:54:14 GMT

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Post by davwat on Jul 22, 2022 18:54:14 GMT

Jul 22, 2022 17:38:55 GMT johnnymayhem said:

I have a Hercules Corvette from 1960. Although I have searched high and low, I cannot find out what grade plug it should have. It has the Lavallette AML 50/2 engine.
I can only guess that it originally had a champion plug of some kind. Hopefully, there is a modern day equivalent?

No good searching high and low! look in the Iceni CAM library.

3 listed in the hand book, don't know about equivalents (my tea is ready) www.icenicam.org.uk/library/Hercules_(GB)/Corvette_handbook.pdf

Last Edit: Jul 22, 2022 19:11:55 GMT by davwat

JamesCentral
Senior Member

Posts: 1,120

Spark plug type/grade Jul 29, 2022 7:32:21 GMT

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Post by JamesCentral on Jul 29, 2022 7:32:21 GMT

Jul 22, 2022 18:54:14 GMT davwat said:

3 listed in the hand book, don't know about equivalents (my tea is ready) www.icenicam.org.uk/library/Hercules_(GB)/Corvette_handbook.pdf

Champion L86 (or others in the upper 80s) - NGK are best avoided in old 2-strokes.