coolguy147
Commander
- Joined
- Jul 14, 2008
- Messages
- 2,817
would a older 59 10hp be more powerful then a 9.9 mercury 4 stroke or yamy 9.9 2 stroke
well my motor i believe if right makes 10hp at 4000rpm not bad? but the recommended rpm range is 4500 so it would make 10 and a half or 11hp? not sure what rpm its running on my 20ft pontoon but sounds like its getting there.
but i see the merc saying 5000-6000 rpm range again four stroke and a yamy 2 stroke going for 4500-6000rpm i mean y? i know the newer motors r measured at the prop so what? is mine more powerful? but how much less or more?
well my motor i believe if right makes 10hp at 4000rpm not bad? but the recommended rpm range is 4500 so it would make 10 and a half or 11hp? not sure what rpm its running on my 20ft pontoon but sounds like its getting there.
but i see the merc saying 5000-6000 rpm range again four stroke and a yamy 2 stroke going for 4500-6000rpm i mean y? i know the newer motors r measured at the prop so what? is mine more powerful? but how much less or more?