Thanks I will have a think about a rebuild !

I have an Ariel Arrow Sports crank case and thinking of bringing it back to life. I have a lot of Arrow parts to build a bike. Does anyone know how I can check when this number was first registered and if it’s being used on another bike? Engine number is T 34120 G

Not quite after fitting the new carb. It was not running properly and I checked the timing and adjusted the points it appears to starting and running ok but its not taxed so its only had a short test ride. Also the compression is still low after running and engine hot I have 60psi with the kick star...

Mikuni is a VM28 from Motocarb it came jetted for Arrow SS 150 main jet 32.5 pilot 5DP7 needle 1.5 air it came with adaptor foe the inlet and I fitted a short plastic distance piece (drainpipe) to connect to the rubber air inlet that fits in the frame. Quick test on the road pulls well starts on cho...

Interesting I bought a 1961 Arrow SS last year and have just completed a nut and bolt refurbishment there was the a rear suspension bracket fitted but no dumbbell spacers.All the rear panels lined up correctly for the securing bolts and i think I would have had problems as i assume these dumbbells a...

Following a final attempt I have given up with the Amal carb. It kept flooding even with a new viton needle valve and seat. The float was a newer plastic one. Just fitted a new Mikuni carb and started with no adjustments! I think after 60 years a new one was needed. Now need to complete the build an...

Have you searched ebay they do universal bushes for motorbikes

Latest update I have a spare engine and rebuilt it in the bench and it also has +20 pistons with piston rings within spec. I am using a new Sealy compression tester which gave a reading of 120psi when I tried it on my Moto Guzzi V50. The engine on the bench also gave low compression readings (no car...

Having renewed the crank bearings and fitted new viton oil seals, new piston rings (stepped ones from drags for +20 standard pistons) the bike still won’t start. The max. Pressure is only 60psi. I am struggling to find the problem of the low pressure the cylinder bores are not showing any sign of we...

The stepped rings are all that Drags supply for the original ariel pistons filing down the peg still retains the ring in its correct position all I am not sure about is what gap should I leave.