I'm in the midst of a resto of my recently-purchased DT3 250.
I noticed today that the spark plug (B8ES) has the terminal screwed onto the threaded stud (by the PO).
Kinda surprised me. The plug cap appears to be stock, and I sorta remember this style of cap from my 1974 DT360 I owned years ago.
The cap fits rather snugly on a plug whether or not it has the terminal on the threaded stud, but the plug does fit deeper into the cap when the terminal is off of the plug:
Here is the shallower fit when the terminal is on the plug:
Here is the inside of the cap:
When I put the cap on the plug with the bare threaded stud, I don't hear/feel the expected metal-to-metal contact.
I'd like to try starting it up and checking the strength of the spark with and without the plug terminal, but its a snowstorm outside, and the bike is in my indoor workroom.
Given the evidence, however, I'm thinking that cap is a non-resistor OEM item which is supposed to fit on a plug with no terminal, just a bare threaded stud.
Therefore, replace it with a LZFH.
Neither my Clymer nor a web search gave me any related info.
Opinions?
I noticed today that the spark plug (B8ES) has the terminal screwed onto the threaded stud (by the PO).
Kinda surprised me. The plug cap appears to be stock, and I sorta remember this style of cap from my 1974 DT360 I owned years ago.
The cap fits rather snugly on a plug whether or not it has the terminal on the threaded stud, but the plug does fit deeper into the cap when the terminal is off of the plug:
Here is the shallower fit when the terminal is on the plug:
Here is the inside of the cap:
When I put the cap on the plug with the bare threaded stud, I don't hear/feel the expected metal-to-metal contact.
I'd like to try starting it up and checking the strength of the spark with and without the plug terminal, but its a snowstorm outside, and the bike is in my indoor workroom.
Given the evidence, however, I'm thinking that cap is a non-resistor OEM item which is supposed to fit on a plug with no terminal, just a bare threaded stud.
Therefore, replace it with a LZFH.
Neither my Clymer nor a web search gave me any related info.
Opinions?
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