What injectors for 6v71 detriot?

Holmes

Lieutenant
Joined
Jun 17, 2013
Posts
15
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2
Location
Boston, MA
Boat Make
40' Webbers Cove
Hey guys, Putting new injectors in a 1978, 6v71n in a 40´ webbers cove, Last major in 95'. At this time there are 80n injectors since 95´ and the engine runs good with no smoke. Run it at ~1600 rpm 9-11kts (not sure on exact rpms bc tachometer has been broken-will be fixed at the same time as injectors).

Dont know whethertho put 80n injectors back in or move down to 65n or 70n´s.
Would like to keep the same power It runs at. So should I run it harder with 65 or 70s or keeP it the same with 80ns? Concerned about engine life/fuel efficiency. What would be pros and cons of the injectors?

Thanks in advance for any advice
 


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