Hi Grant81
i got advised with my tecumseh by retired small engine mechanic,for it to last and not use oil/blow smoke, you will need to Bore Cylinder out and put oversize piston/rings and no not advisable to use standard piston and OS rings.
other way to go is Bore/resleeve, advantage is you can use standard rings and your piston.
$$ well my quote for v70 7horsepower vertical was $75- to Bore/$115- to resleeve+35 for sleeve, yes BORE NOT HONING.on my tecumseh im getting it Bored out and getting 0.020 ovesize pistons/rings..Grant81 Because your motor is a 13hp you got a bit of room to move regarding spending money as they are not cheap NEW..my advise is dont cut corners and measure measure measure to make sure other components arnt worn,eg like conrod,crankshaft,bearings othewise your efforts will be shortlived.
Partwise i got all my hard to get stuff at e-bay america,US dollar is low so Value for money even with american shipping costs.And yes fair bit of mucking about with part collecting so if your inexprianced better to use local suppliers in oz for parts..
