Page 9 1986 GasGas Halley restoration
The bore looked clean.
I had to tease the gudgeon pin out with a little heat. I hadn't cleaned the engine because I would have flooded it, seeing as the head was completely loose. I also knew that all of the bearings would be changed internally.
Just look at that !!
It looks to me like this had been running in this state.
The engine came out with little effort. They are squeezed in. This is a 325 cc GasGas engine and was their first engine. It was heavily based upon the Italian Villa engine and this was where GasGas got their initial engines. Villa who supplied engines to a variety of motorcycle manufacturers however went bust following miss management and poor organisation. GasGas used the design of the defunct Villa company and adapted it for their own use. They incorporated Bultaco 325 Cranks and pistons. It seems strange to be telephoning Bultaco UK for parts. The reason for this use of Bultaco parts was simply because there was a surplus of these parts hanging around Catalonia after Bultaco's demise a few years earlier.
Then the engine strip down started.
Oops a crack in the alloy clutch casing.