Originally Posted by biffleg
Got my new drum yesterday ... so I'm going to begin assembling my UDS this weekend - and will admit - I'm a little confused on the whole pipe nipple thing for the air intakes! Why do you drill a 13/16 hole for a 1/2 inch pipe nipple? What am I missing and do you have any close up pics?
Thanks for the help!
That confused me at first too... The inside diameter of the pipe nipple is 1/2 inch. The outside diameter is about 13/16. As you drill the holes make sure to check as you go up in hole size. Some pipe nipples seem to thread in at 3/4. Both of mine have required 13/16.
Sorry, but I don't have any pics of that specifically.