Haven't decided 100% on this but I want to make some intercooler piping for the daily and I'm thinking of putting in some sort of quick disconnects that use weld in ferrules (not necessarily Wiggins Clamps since there are cheaper alternatives now that are suitable for my purposes).
My question is are the ferrule sizes internal diameters, and do you buy them the same size or narrower diameters than the IC Pipe?
In other words are they: -
(a) The same diameter as the intercooler pipe, so that you just butt them together, use something on the inside to hold them centred and then weld the 'seam';
(b) A narrower diameter so that they fit into the end of the pipe and get welded at the 'shoulder'?
My gut says (a) which seems less restrictive but (b) seems more secure.