Renault marine diesel motor….12 hp

[Wansworth]

Any thoughts on these French engines

 

[Tranona]

Not sure the 12 is a diesel - usually 8 or 9hp and (I think) are actually Hatz engines.

Google Renault Couach. You will then probably run away as fast as your legs can carry you!

 

[penfold]

Good luck getting bits, nothing much wrong with them other than being ancient and as refined as you'd expect for something that started life pushing dumpers and spinning concrete mixers.

 

[LittleSister]

I've no first hand experience of them, but I pondered a boat several years ago with a Renault engine, and from the various adverse comments I found about them at that time (can't remember details) gained the impression they were one to avoid. The additional years since then, in terms of remaining engine life and the challenge of getting spares would make them even less attractive to me now.

 

[ChromeDome]

For your entertainment (from Renault Marine + Couach - everythingaboutboats.org):

Chantier Naval Couach in Gujan Mestras, France had been marinizing Renault and Ford base engines for quite some time. Renault Marine acquired Couach‘s engine business in the 1970’s, and Renault Marine became Renault Marine Couach. Renault Marine Couach continued to support the Couach models based on Renault base engines with parts and service. Renault also continued marinizing, marketing and supporting the Couach models based on the Ford Industrial Diesel Engines. For more about the Ford based models, see the Ford Dorset section later on this page and our main article on Ford Industrial Power Products Diesel Engines.

Renault Marine Couach was acquired by Nanni Diesel in 1982 during Renault’s restructuring. Nanni’s support of Renault Marine Couach’s engine models has dwindled. Some Renault Marine Couach spare parts are reportedly still available from www.renaultcouach.com.

 

[Wansworth]

So that’s a “No”…….……..thanks for replies

 

[Wansworth]

Shame the boat it’s attached to a jenneau Aquilla looks ok and is nearby…..and the owner says it goes like a sewing machine(translated from theSpanish) but delvingin various forums here in Spain it looks like as the forum has intimated it’s a problem waiting to happen and cost a new engine which makes the asking price too much.

 

[ChromeDome]

Just make a budget & plan for the day it needs replacement.

 

[wombat88]

Just don't unless you want to replace it. I once bought a boat with a single cylinder Ducati diesel. Ducati I thought, they are certainly still around...but not in dumper trucks anymore.

 

[jamie N]

I've actual experience of a Renault Couch RC8D. They're fine engines, and general spares are available, as the base engine is a Hatz E673, which is a workhorse.
The engine's slightly unusual in that it doesn't have an oil pump or filter, as it's a splash system, and an unusual water pump in that it's raw water cooled, with 2 inlets to the pump; one from the seacock, and the 2nd from the bilge of the vessel, thus it's constantly pumping the boat dry. The pump is engineered to work in this manner, and it worked well on my wooden boat.
It's easily repairable, the rings cost about £35.00; the water pump is a very easily replacable belt driven pump. The only real difference between the RC8D and the E673 is the block and the head. Everything else is a simple swap.
Very easy engine to work on, very easy to maintain. I replaced mine because it was a fraction too weak for where I sail, so I went up a few hp. If I hadn't got a good deal on the bigger engine, I'd not have bothered.
I certainly wouldn't let the fact that the boat's a Renault engine in it put me off buying a boat that I wanted.

 

[Wansworth]

I've actual experience of a Renault Couch RC8D. They're fine engines, and general spares are available, as the base engine is a Hatz E673, which is a workhorse.
The engine's slightly unusual in that it doesn't have an oil pump or filter, as it's a splash system, and an unusual water pump in that it's raw water cooled, with 2 inlets to the pump; one from the seacock, and the 2nd from the bilge of the vessel, thus it's constantly pumping the boat dry. The pump is engineered to work in this manner, and it worked well on my wooden boat.
It's easily repairable, the rings cost about £35.00; the water pump is a very easily replacable belt driven pump. The only real difference between the RC8D and the E673 is the block and the head. Everything else is a simple swap.
Very easy engine to work on, very easy to maintain. I replaced mine because it was a fraction too weak for where I sail, so I went up a few hp. If I hadn't got a good deal on the bigger engine, I'd not have bothered.
I certainly wouldn't let the fact that the boat's a Renault engine in it put me off buying a boat that I wanted.

Now what am I to think

 

[penfold]

You're never going to buy a boat; you're an advanced AI run by the forum software.

 

[jamie N]

Trust me W, I'm a bloody good bloke......

 

[Wansworth]

Trust me W, I'm a bloody good bloke......

Ido I trust you implicitly

 

[Wansworth]

Apparently about Severn prospective buyers/tyre kickers interested so we have withdrawn from the fray

 

[DownWest]

Apparently about Severn prospective buyers/tyre kickers interested so we have withdrawn from the fray

You weren't confusing them with your alter egos?

The Renault had/has a low output alternator in the bell housing. Some people have fitted belt driven ones as no bits for the original.