Friday, September 18, 2009

Isetta - Engine Reassembly

After disassembling and cleaning the engine, some of the main problems Bill found were a broken timing chain, armature with excessive wear, excessive crankshaft run out, worn exhaust guide, and probably a few other things I'm forgetting. In addition to replacing those items, all bearings, seals, piston rings, hoses, and gaskets were replaced. All of the photos in this post were taken by Bill Rogers during his rebuild of my engine.

Measuring the piston and cylinder

Some of Bill's notes regarding piston and cylinder measurements and crankshaft run out

Crankshaft bearing and oil slinger being installed

Main bearing carrier and timing sprocket being installed

Cam being assembled

Crankshaft, cams, and valve guides installed

Flywheel installed with new nut

New timing chain and new tensioner installed

Cylinder after honing

Piston and cylinder installed

A view of the oil sump area

Wear to the oil pump plate was honed flat

Rockers being inspected and cleaned

Head with new exhaust guide

Installing the head

Valve covers installed

Oil screen installed

Installing the timing cover

Installing a new armature and the oil pan

Rebuilding the dynastart and replacing wiring as needed

Field coils installed

Cleaning and inspecting the automatic advance

Installing the field coil shield and blower

After the blower housing is installed, the engine is mounted to a test stand to begin preparing it for a test run.

The completed engine is test run and then crated for the shipment back to me. Thanks for the great rebuild Bill. You can learn more about Bill's restoration services at his website:

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