Hi
I have nor-tech v 3900 with twin mercury 525efi and my boat is runing max 75mph at 5000 rpm. Ex owner said that the boat is runing min 85 mph. Is there something wrong with My boath ?
Thanks for answer.

Trim?

I would think that boat should run 85.

All of the 525 boats ran in the high 80's. You might have a prop issue.

Hi
Thanks for answers trim is on 6 and tabs on 0.
Maybe trim is too much because all the time overspeed and guardian alarm turn on at 5000 rpm.
Next time I gona take some photos of smartcraft display and poste it.

Hi

It was a prop problem this happened yesterday without hiting a thing.


I think is 32 pitch pn is 48-889971-32 .
Is this the optimal pitch for my v3900 with 525s ?
Im from europe-adriatic sea and if you have some idea where can I get this props quickly ?