Yamaha FJR1300N 2001 Service Manual page 612

Installing Riv-Nut ports in the FJR's Headers
The end result. The upper portion of the riv-nut has been mushroomed firmly
against the wall of the pipe, following the curve, providing a threaded port. I
chose 1/4"-20 NCT aluminium inserts for this example. Following this I inserted
an oxy-acetelene torch into the other end and adjusted it so flames were
shooting out the end past the insert and left it until the pipe started to glow a
dull red through most of it's length. The aluminium was unaffected, but I think I
would still choose steel or stainless inserts for the real installation to avoid
corrosion of dissimilar metals.
http://www.micapeak.com/bike/FJR1300/howto/rivnut.html (5 of 10) [15/05/2003 5:56:43 PM]