I bought the Arneson drives off a Sealine 11 meter yacht,the customer had blew up several gearboxes,and was tired of waiting for replace/repair in the summer ,he decided to go for Volvo 435 hp and Duoprop packages.
The first Yanmar I bought locally at a Yanmar dealer with 800 hrs ,the second in Great Brittain with 1100 hrs,both engines were on a dyno to check them under full power,and both were around 430 hp on a hot day with no correction on the dyno.
The Yanmar dealer overhere has a dyno ,they were very helpfull and did a injector cleaning and presure test,valve adjustments ,new filters/oil/impellers,etc etc
Gearboxes are ZF, and came from Fabio Buzzi in Italy ,and have 2 gears , 1,30 ratio in 1 th gear ,and 1:1 in second gear.
Yesterday we did change the O rings/packings in the Arnesons ,they were having a minor leak at the ball socket ,it seems the retainer ring was not torqued at the specs by the formal owner,because we could turn the ring a full revolution before the final torque was applied.
I will post a few pics tonight
The first Yanmar I bought locally at a Yanmar dealer with 800 hrs ,the second in Great Brittain with 1100 hrs,both engines were on a dyno to check them under full power,and both were around 430 hp on a hot day with no correction on the dyno.
The Yanmar dealer overhere has a dyno ,they were very helpfull and did a injector cleaning and presure test,valve adjustments ,new filters/oil/impellers,etc etc
Gearboxes are ZF, and came from Fabio Buzzi in Italy ,and have 2 gears , 1,30 ratio in 1 th gear ,and 1:1 in second gear.
Yesterday we did change the O rings/packings in the Arnesons ,they were having a minor leak at the ball socket ,it seems the retainer ring was not torqued at the specs by the formal owner,because we could turn the ring a full revolution before the final torque was applied.
I will post a few pics tonight