Can anybody tell me the thread size on our spark plugs??? Metric, S.A.E., fine thread????

 

uh oh, somebody made a boo boo!

 

No Boo Boo just trying to make my own Spark plug gapper out of spare parts here at work. Figure I could make my own instead of borrowing Tom281's all the time.

 

Well I guess I can answer my own questions now. I when to the local Hardware store and search the bins to find out that the thread size is................................................ .........


3/8" Pipe Thread

 

They are not a pipe thread. I don't know the size, but I know they are not a pipe thread.

 

I have to agree on this...They are definitely NOT a 3/8 pipe thread!!! They are metric something like 16mm X 1.25 thread. I am not for sure but I can find out and I am sure they are not a pipe thread of any kind !!!!
Scott

 

Well a 3/8 pipe thread connector holds the Spark plug just fine. I was fooling around yesterday and made a rough Spark Plug Gapper. It works just fine. Regapper the old HT1 to .035 after putting in the new HT0.
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