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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