Port timing for 1988 70 hp merc

[blackdonald]

What is port timing and can it be changed<br />on my motor? thanks

 

[MERCMAN]

Re: Port timing for 1988 70 hp merc

PORT TIMNG IS THE LOCATION OF THE INTAKE AND EXHAUST PORT IN CYLINDER AND THIS IS CHANGED BY RAISING OR LOWERING THESE PORTS PERSONALLY IT WOULD BE A EXSPENSIVE JOB FOR MAYBE 5 HP THE ENGINE HAS TO BE COMPLETELY TORE DOWN TO DO THIS. REALLY A WASTE OF TIME AND MONEY HONESTLY