by DMan1198 » Sat Nov 25, 2017 3:36 pm
I want to say the cast stuff is around 1/4” thick at a minimum. I put a pair of 1/8” npt plugs in the 2nd gen horn I have on mine, and it takes a little more than the full height of the plugs.
Ducati- professional nap taker, and thread derailer extraordinaire
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