pre sized cam bushings

[73daytona]

Hi has anyone out there.installed triumph pre unit motor cam bushes
I have purchased pre sized bushes from the uk
installed them
cams dont fit???? thanks in advance
73dayona
new zealand

[kbalch]

I've installed new Triumph unit cam bushes, not the pre-unit sort, though they won't be any different in this regard. The "pre-sizing" refers only to the OD (no matter what the manufacturer might claim) not the ID.

New bushes will absolutely have to be line-reamed in place before the cams will fit properly - or at all!

Ken