I don't know where to go with this now. I've been given an information overload (it's amazing).
the piston has minor scratches, but there is one scratch that I can slide my finger nail over and it catches. I've been told by a mechanic and my old boy that given it's usage that it won't be a problem and to just put it back together and away you go. At the same time, a huge part of me still wants to get the O/S piston and so fourth.
I guess given this is my first time doing this, I could put it back together and give it a new paint job and focus on the restoration of the mower. Worst case buy a new B&S if it fails and then rebuild it with O/S when time and costs permit.
I'm not too sure.....
I made a few calls to motorbike and go-kart mechanics and all say that you cannot hone an alloy block as the stones play havoc on the alloy, and insist it requires a re-bore, but given it's not a sleeved cylinder that it's tricky to do properly. Don't get me wrong, I do believe them to a degree, but given their background, I can't help but take their advice with a grain of salt as their boring and build jobs are for high performance engines of which require such precision. I admire their passion and so fourth, but I want "real" advice based on the application this motor and the low rev's it's to be used. In any case, the information you blokes have given me is unbelievable and all those I've spoken to about these forums, I've held this place in high regard due to this wealth of information and experience.
In the end,
Someone be real with me.... What should I do? Should I be concerned with what I've got and just put it back together along with new seals and gaskets and focus on the external aspects of the motor? Or do these scratches warrant further work?
