suzuki250

Try the Beamish Suzuki enthusiasts group on facebook Lost of parts on there

Yes, I fixed the bearing issue with Loctite. mine also had the large round points cover! Good luck, it's a nice looking chassis

Is the engine a 37a Villiers?

Use the clutch, its not a race so you don't need the power on all the time.

Is the bike an import?

I use Silkolene / Putoline Light Gear Oil (75w) they all seem to work the same. If you buy Putoline in 4L cans you can get it for £38 posted! It doesn't matter what you use the plates always seem to stick when its cold!

is the wiring ok, it looks a bit rough around the headstock?

there are a couple of ways, In a four jaw chuck and a fixed steady (and a bush to fitted to run the steady) or the slider mounted on on the cross slide (vee blocks and lots of packing), and boring bar in the chuck both methods take a lot of clocking up!

I've done similar on a few sliders, but I used a boring bar in a lathe.

The biggest problem is you can’t order spares from 1965, so people need remanufactured parts to keep them running!

The only good thing about this winter is I can finish restoring my Norton, I won’t be doing a lot else!

They do loosen up after a while

Is it possible to be too old?

The bore is 72.5mm + or - whatever the tolerance is for the plating, (that's why they have size graded pistons) the clearance depends on the piston material, if its hypereutectic then 0.023 would be fine Measuring it with a caliper you cannot get the accuracy required, therefore if the seller says they are paired, then its probably correct. Build it and ride it