Bent Iridium Spark Plug Electrode

Information relating to the Matchless G11 or AJS Model 30 600cc twin
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Biscuit
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Joined: Thu Jan 01, 1998 12:00 am
Location: KENT UK

Bent Iridium Spark Plug Electrode

Post by Biscuit »

I have my plugs back and the one that closed up has a shiny abraded portion just on the bend of the side electrode, definitely looks like the valve.

I marked the position of the electrode, fitted one to the left hand cylinder and it pointed directly to the inlet valve, fitted the other plug and it pointed away from the inlet valve. The initial plug, fitted to the RH side, points to the exhaust valve, which doesn't concern me.



Crafty
Posts: 38
Joined: Wed Aug 26, 2009 4:28 pm
Location: WILTS UK

Bent Iridium Spark Plug Electrode

Post by Crafty »

I had the same problem on one of my G12 s.
I installed the pugs up so that the electrde was aligned to clear the inlet valves. For experimental reasons I used two washers under the plugs on the other G 1i2. Success with both methods both bikes
Crafty
Peter Allen
Posts: 20
Joined: Sat Feb 11, 2012 4:31 pm
Location: CO ,80439 USA

Bent Iridium Spark Plug Electrode

Post by Peter Allen »

you can buy different thickness washers called indexing spark plug washers to index your plugs.
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