View Single Post
  # 6  
Old 29-12-14, 09:33
Pleiades Pleiades is offline
XT-Moto SuperStar
 
Join Date: Aug 2010
Location: North Norfolk
Posts: 5,320
Pleiades is on a distinguished road
I actually started by drilling every other hole, then ended up boring out all of them.

Looking back, I can't be sure it was 1.5mm; it was a while back and I don't have the exhaust anymore. Anyway, you get my drift - offer up various drill bits to check; start small and work up.