Oem spark plug mfg ??

Information relating to Matchless and AJS Models built prior to 1939
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Dsrdave
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Location: Wi USA

Oem spark plug mfg ??

Post by Dsrdave »

What make spark plug would have been used in 1925 ?? Specifically for a 800cc twin, I assume any side valve engine would have had the same make. Lodge, klg ???
Thx, dave
SPRIDDLER
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Re: Oem spark plug mfg ??

Post by SPRIDDLER »

Others with the knowledge may be along n due course, but just out of interest this Lodge type H1 sparkling plug is shown in the 1927 AJS Workshop Manual......
Spark plug 1927.JPG

For 1927 the Champion guide gives the type L10 plug for side valve AJS engines. Here:

http://archives.jampot.dk/technical/Ele ... 7-1955.pdf


A good supplier of vintage plugs in the U.K. is the Green Spark Plug Co. See here:

https://www.gsparkplug.com/ignition/spark-plugs
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Dsrdave
Member
Posts: 34
Joined: Sat Nov 11, 2023 3:31 am
Location: Wi USA

Re: Oem spark plug mfg ??

Post by Dsrdave »

Thank you! I suspected lodge. I have a tough time navigating the archives, I wasn’t able to find it. Thanks again
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