The SC 91 FS.
This is another engine that was in storage for a long time. During disassembly, It was notably visible that this engine was still new and hadn't been run much.
I Just cleaned it up, replaced the bearings and o rings and it was as good as new again.
The valves just needed slight lapping to clean and are sealing perfectly.
Test runs were done with 10 % nitro and a Master Airscrew 14x8 prop.
This engine has good compression and runs very well.
Негізгі бет SC 91 FS Service And Test Runs
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