getting more hp out of a 59ci merc????

[genea01]

well have you done anything to your motor yet keep us posted on what all you have done i would get low water pick up and then start leaning motor out a little from stock but watch your plugs, that is a cool boat like the video

[fs5]

its all going back together stock as....
i've been after a low water pick up for a while now ,but i still need to get a good prop to run.i need a decent 12 in diameter around 20p to get the most out of the extra height.
i've got my eye out around the place for a decent block to have a fiddle with.
are the 40hp blocks the same as the 60hp ?

thanks again for all the replys and pm's

[Fast Fred]

40 hp is Not the same, ports are different. there are things you can do to make it GO. there are other flavors that will give more bang for your efforts, and them other flavors Will run right a round you. a mod 59 Merc puts the hull in "X" class,
you would need to get 50 more hp out of the 60hp just to stay up front.

be best to make some dome pistons for it, bevel the exhaust port, flute the pistons in front of the intake ports, shortin the tuna

[50hptiller]

how much does that hull weigh?

[fs5]

40 hp is Not the same, ports are different. there are things you can do to make it GO. there are other flavors that will give more bang for your efforts, and them other flavors Will run right a round you. a mod 59 Merc puts the hull in "X" class,
you would need to get 50 more hp out of the 60hp just to stay up front.

be best to make some dome pistons for it, bevel the exhaust port, flute the pistons in front of the intake ports, shortin the tuna

thanks mate,i'l hunt around for a 50/60 block to fiddle with.

is it worthwhile to flute the piston's and bevel the ex ports and cut the tuner ,on a stock build?

[fs5]

how much does that hull weigh?

75kg ,

[genea01]

yes it will help, keep us update on the breakin and how the rpms are now

[lcp]

hi everyone,any lead where can i get domed piston for the sea pro 55,or maybe someone is making them.best regard Mr Lo.