Am I Boring You?
If you are going to rebuild an engine you need to measure what you have got, to determine what is and isn’t within the manufacturer’s specification.
The fit of the pistons in the cylinders will have a massive impact on the performance of the engine and must be within quite close tolerances to be healthy. When you see a bike belching out smoke, the chances are that the pistons are not a good fit in the bores, which leads
