Gordon Martin
Member
I need to find a Lycoming oil filler extension tube for the O-235 C1 on my RV3A project. I have some part nos. but don't know which ones have the correct threads. The dip stick on the engine has 1-1/8 in dia. threads. I know that some of the extensions have 1-1/4 in dia. threads. Anyone know where I can get that info?