Dean3326 Posted July 3, 2016 Share Posted July 3, 2016 Spark plugs ? 1926 franklin model 11A engine E103545 can anyone tell me the type of spark plug that should be in this vehicle. It now has autolite 3095 with a reducer going from the 1/2 pipe thread of the spark plug to 3/4 pipe screwed into the head. Problem being the od of that reducer barely screws into the head maybe on 3 threads. so something is obviously wrong. What is the original spark plug and what is its thread dimensions. Thank you Link to comment Share on other sites More sharing options...
Spinneyhill Posted July 3, 2016 Share Posted July 3, 2016 It is probably an 18 mm thread. Link to comment Share on other sites More sharing options...
Guest Posted July 3, 2016 Share Posted July 3, 2016 I am sure that you would already have had correct answers to you questions if you had scrolled down to the "Franklin" page under DOMESTIC MAKES & MODELS. All of these forums are great but you usually get better quicker replies when you ask under the specific make. Link to comment Share on other sites More sharing options...
Spinneyhill Posted July 3, 2016 Share Posted July 3, 2016 Here you go: http://www.championautoparts.com/find-my-part/Find-My-Part-Results.html?parttype=SPARK PLUGS&apptype=AUTOMOTIVE&options=1926~Franklin~Model 11 A&values=1926~Franklin~Model 11 A I found this with the search "champion spark plugs". Link to comment Share on other sites More sharing options...
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