I'm a new boat owner, and purchased a 1974 reinell<br />trihull. it has a 70 hp jonson. the compresson in<br />the 3 cylinders is 110, 115, 120.was wondering what the top rpms should be under full load. with only 2 people in it 500 pounds. it caps out at 4100 tops going with the wind. seems to...
