Max motor on 18 ft riviera cruiser

[Nitro_boy]

I have a 35 hp motor on it now and it has no power how big of a motor can I put on it safely?

 

[mike243]

Re: Max motor on 18 ft riviera cruiser

i have a 18' tracker & its rated up to a 75hp,i have a 50 on it & get a little better than 20mph wot, mike243

 

[rickdb1boat]

Re: Max motor on 18 ft riviera cruiser

What year is the Riviera Cruiser?

 

[VaGent]

Re: Max motor on 18 ft riviera cruiser

I would be interested in knowing that answer to question myself. I have a 1986 24 ft Riveria Crusier that I would like to put a Evinrude 115 on it. It has a Johnson 70 HP on it now. I have no idea what it's rated for as the rating plate is missing. My logs measure 19.25" in diameter so I would assume that has something to do with the maximum horsepower too?? How do you go about determining the maximum horsepower to start with???

 

[rickdb1boat]

Re: Max motor on 18 ft riviera cruiser

Les, your toon was originally rated for 90 HP. I would check with your insurance company to see if they would cover you just in case if you put the 115 on..

 

[VaGent]

Re: Max motor on 18 ft riviera cruiser

Thanks for the information Rick. I'd rather be legal & safe then not be.

 

[Nitro_boy]

Re: Max motor on 18 ft riviera cruiser

The boat is a 95 and it needs some balls.

 

[rickdb1boat]

Re: Max motor on 18 ft riviera cruiser

Nitro, the max recommended HP for your Riviera Cruiser is 70 HP.

 

[coolguy147]

Re: Max motor on 18 ft riviera cruiser

what about a 1964 20ft riveria? max hp

 

[MH Hawker]

Re: Max motor on 18 ft riviera cruiser

my 1988 20 foot RC is also rated at 70 HP

 

[vergil]

Re: Max motor on 18 ft riviera cruiser

what about a 1964 20ft riveria? max hp

Pics of your motor mount I can answer that, is there not a tag above the right toon? mine is a 24 footer with the adjustable mount, and it too is an oldie but goodie from 1964, and I am running a 75hp johnson