Engine rebuild part 3 (Top end MG 3056)

Parts ready for assembly. New piston, needle bearing, spacers and gaskets.

Original bore 81,5mm

Cylinder head in great condition.

Nos piston.

Sealing surface lapped in.

Max allowed piston ring end gap is 0,8mm.

End gap measured 0,5mm.

Piston to cylinder clearence is 0,10mm.

Piston and cylinder installed.

Just enough clearence to install cylinder with the engine in the frame.

The bike is taking form.

Cylinder head bolts tightened to 35 Nm.

Engine rebuild part 2 (Top end MG 2695)

Cylinder sealing surface lapped in against cylinder head with grinding paste.

Cylinder original bore, just got a light honing.

Max piston ring groove clearence is 0,15mm.

New piston ring mounted, measured 0,5mm.

C = Max piston ring end gap 0,8mm

Piston ring end gap 0,7 mm. still within specs.

Piston to cylinder clearence is 0,15 mm. Wear limit 0,30 mm.

No wear on piston pin.

81,42 original size piston.

This is a used piston but all measurements are within specs and it looks good so it will have to do another tour of duty.

All parts ready for assembly.

Piston mounted.

Cylinder mounted.

Steering stem and triple clamps.

Clamps blasted and painted

New bearings.

Original hardware.

Rear suspension.

Original Girling shocks. New paint on springs and bodies. Shafts are straight and have no leaks. There are a few dings in the chrome, but it is a 40 year old bike so I can live with it. 

Original Bufo UNF hardware and spring retaners replated.

These Girlings are 20 mm longer than original and will be fitted to the bike with modified swingarm

Shafts and bumpers are all good.

The tools of the trade.

Always a good investment to have a workshop manual. This one is printed back in 1979 and covers several Huskys.

No need to guess when you have all the specs.

I try to avoid the sledgehammer by using the right tools.

Torque wrench.

A must when installing new bearings.

Repair of some damaged threads.

Restoring the hubs

Due to some wear this front hub was blasted and painted black  instead of being polished. New bearings and seals, and all hardware replated.

Hub polished but backing plate had to be blasted and painted, i will be on the look out for a better one.

Front hub assembled

Both rear hubs blasted and painted. Fitted with new bearings and seals.

Rear backing plates ready for assembly.

Engine rebuild part 1 (bottom end).

New bearings, seals and gaskets.

Engine cases cleaned, bearings and seals replaced. No play in connecting rod so it went back in.

Note marking on crank 1969.

Transmission cleaned and inspected, looks ok but is known to be a bit of a weak link in the 400cc engine.

Cases put back together.

Crank in the center.

Drivegear and clutch installed. 

1970 engine cleaned and new bearings fitted.

Crank in good condition, marked 1970.

Transmission inspected.

Transmission installed.,

Clutch was toast on this engine so new clutch plates went in.

Done for now.