What size outboard can I use?

[oceanbum]

I have a 1990 Sea Nymph pontoon model number on the title says 2019snb and on the side of the boat is sn200. I'm wanting to upgrade the outboard from a 25hp Johnson but I cant read what the boat is rated for. I've tried to search for a web address for sea Nymph with no luck and I've search Iboats but cannot find the model I have. Any ideas on how to find the horsepower rating? Or any thoughts on what I can install? I'm thinking of nothing larger than a 70 or 75.

 

[Gary H NC]

Re: What size outboard can I use?

Sea Nymph stopped building boats in 1998. Lowe Inc.bought them out.

If it is a 20 ft pontoon i would think a 70 or 75 would be about right for it.

No listing of that model on NADA.

How are things up in the Chili bowl?

 

[mjc3834merc]

Re: What size outboard can I use?

I've got a 75hp on my 20 footer. Works just fine. It will do 20-22 wot but I hardly ever run wide open. Most of the time we run along at 3500 rpm's. There isn't anywhere on our 500 acre lake I can't get to in less then 10 minutes at 15 mph. I do have to crank it up when the Grandkids come up.
Mike

 

[rutcutter]

Re: What size outboard can I use?

Most of the 20 footers that I have seen are max rated at 90 HP. My boat is a 20 foot Bentley and it is rated at 90 but it has the large pontoons on it.

 

[Baysidejoe]

Re: What size outboard can I use?

I got a ls 2000 Avalon and it's rate at 100 hp, But have a 50 4 stroke on it and works well.

 

[lncoop]

Re: What size outboard can I use?

70-75 hp would be the ticket.