Mr cox that was an APC 6x3 very light prop (weight) . I have not been able to unscrew the backplate so have not seen the ports the engines are now ABN not ABC so it breaks in quick
20% oil so no issues with the liner the rapid compression increase was a pleasant surprise It should do very well as a diesel if it does 10000 with an 8x4 ?? should do it anyhow with a 7x4 or 8x3 martin