This engine belongs to a friend at our club. It needed a service and bearing change.
During disassembly, I noticed that the exhaust valve spring was damaged which looked like it was caused by overheating.
I replaced the valve spring, the bearings and some of the o rings, and all the gaskets.
The valves themselves are perfect and the engine has very good compression.
The engine was tested on fuel with 15% nitro and runs very well.
Sorry for the bad recording sound during the test runs. The microphone started to give problems.
Негізгі бет Saito FA 100. Valve Spring Replacement, Service And Test Runs
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