Hey all,
I just purchased a new skiff and want to throw my 1983ish Merc 70hp on it.
However, there are a couple of problems that I've identified that I'd like to ask y'all about.
The hull is a 2009 and rated for up to 50hp.
A couple of justifications for thinking my 70 will be fine hanging on the back.
1. These early 80's Merc 70hp are very light (190lbs) so weight shouldn't be an issue, correct?
2. It can't be putting out anywhere near 70hp at the prop, right?
- I know Merc started rating hp at the prop in the early to mid 80's so I'm thinking it was probably rated at the block.
- The motor is 30yrs old and has had to have lost a step or two since it came off the production line.
Picture of it on the back of my old rig.
A big factor in this is that I will have to add a 5" riser plate to the transom to bring my cavitation plate flush with the bottom of my transom. I don't want to overpower and have the riser plate.
Anyway, what do you guys think? What is a more realistic valuation of the hp my outboard is actually putting out?
I just purchased a new skiff and want to throw my 1983ish Merc 70hp on it.
However, there are a couple of problems that I've identified that I'd like to ask y'all about.
The hull is a 2009 and rated for up to 50hp.
A couple of justifications for thinking my 70 will be fine hanging on the back.
1. These early 80's Merc 70hp are very light (190lbs) so weight shouldn't be an issue, correct?
2. It can't be putting out anywhere near 70hp at the prop, right?
- I know Merc started rating hp at the prop in the early to mid 80's so I'm thinking it was probably rated at the block.
- The motor is 30yrs old and has had to have lost a step or two since it came off the production line.
Picture of it on the back of my old rig.
A big factor in this is that I will have to add a 5" riser plate to the transom to bring my cavitation plate flush with the bottom of my transom. I don't want to overpower and have the riser plate.
Anyway, what do you guys think? What is a more realistic valuation of the hp my outboard is actually putting out?