Tohatsu 6.6m Rib Max Engine Size

bensilcocks · 13 June 2021, 12:05

I have a tohatsu 6.6m rib. It currently has a Mariner 115hp four stroke on the back. It goes well with a couple of people on board, but is underpowered with more people and for water skiing etc. I have tried to find out more about the rib online but without much success. I have a few questions:

Does anyone own one of these?

What engine do you have on it and how does it perform?

What is the max horsepower/weight of engine that can be put on?

I’m thinking of either 150 or 175 but no idea if what difference that will make and if it’s safe to do so.

Thanks!

mickter · 13 June 2021, 13:52

Try getting in contact with Tohatsu, failing that there should be a plate listing all info usually on transom.

bensilcocks · 13 June 2021, 13:53

Hi Mickter,
I will contact them, thank you. I have looked all over the boat for a plate and can’t find one anywhere?!

willk · 13 June 2021, 20:24

IIRC these were built by Porters/Solent RIBs. Bad decks were an issue back then - you might be lucky. They were a marketing gig - like Honda inflatables. A 6.5m should be good for at least 150hp, unless it's rotten, in which case you're in trouble...

bensilcocks · 13 June 2021, 21:15

Hi Willk, thanks for the response. We have had the boat for a couple of years now and as far as I’m aware the deck seems to be solid ��. I looked at another before this one and it like a trampoline! Thanks for the advice on engine size, I think 150 might be the budget limit as well as hp limit ��. Cheers

Caterham2002 · 15 June 2021, 19:40

Hi Ben,
We've had a Tohatsu RIB for over 10 years now and very solid. Bought new from https://www.fairweathermarine.co.uk/ - if you need more info. Yamaha 100 has proved adequate for all our needs.
Regards,
Mike

bensilcocks · 15 June 2021, 20:18

Quote:

Originally Posted by Caterham2002

Hi Ben,
We've had a Tohatsu RIB for over 10 years now and very solid. Bought new from https://www.fairweathermarine.co.uk/ - if you need more info. Yamaha 100 has proved adequate for all our needs.
Regards,
Mike

Thanks Mike. I will contact them and see what information they have. Is it the 6.6m one that you have?