05-02-2019, 08:59 AM
(03-02-2019, 10:00 AM)Chris KC Wrote: Simon, for what it's worth the 'Ulster' silencer was approx. 13" long, 4 3/4" high and 2 1/2" thick.
The ends were domed with about 3 - 3.5" radius in side view.
The outlet pipe is 1" OD, connecting to a 1 1/8" OD tailpipe. Not sure about the inlet, mine is 1 1/2" ID.
Chris Gould's Ulster Replica book contains suggestions on how to go about making one.
I think Ian Bancroft sells a similar silencer, like most the ends are flat as it's much easier to make.
Did the silencer have any silencing material in it or was it simply an expansion box?