Yanmar 4jh4-TE 75hp vs Volvo Penta D2-75 (or D2-60)

[Tornadosailing]

Originally Posted by stormalong

IMO both Yanmar and Volvo are an issue with both parts availability and cost.

My solution was Beta marine. It is a Kubota based conversion so parts are available from tractor dealers all over the world. Anytime you have a product specifically for marine use you have limited availability and higher cost.

Yanmar makes tractors too. I just ordered a rear main seal (my fault it failed, long story) for my 4JH4-TE from the local cub cadet dealer.

[yachtodyssey]

Originally Posted by SaltyMetals

I have a Jeanneau 43ds (about 12 tonnes) which was factory fitted with the 4JH4-TE (75hp). you could take the same Yanmar engine without the turbo which will give you 48hp but the size of the engine is the same . I would go for the turbo version.
Andrew
"Genial Bee"

Thank you, Andrew !

[yachtodyssey]

Originally Posted by hpeer

44”LOD, 37’LWL, 40,000 pounds. Yanmar 4JH4-TE - 72hp?

I’m frequently running 1,800 to 2,100 rpm, we have some shaft lash above that point. The only time I’m using the full HP is when I’m aground and trying to get it, or when maneuvering and making heavy use of prop walk, full keel.

The turbo crapped out at about the 2,000 hours, needed bearing from Japan. Took a few weeks to get. Once for other reasons needed a head gasket, that also had to sourced from overseas. Mixing elbow failed, crap welding, Yanmar wants about $700. I found a far superior after market elbow for about $400. Oil filters MUST be Yanmar.

No comment Yanmar vs. Volvo, no Volvo experience.

Thanks a lot sir. Your experience is important to me. I also think that the reserve of the resource will play a significant role in emergency cases.

[wingssail]

Originally Posted by yachtodyssey

Thank you ! She is Van de Stadt Madeira 44 alluminium blue water cruiser (multi chine hull) 12 t displacement. https://www.stadtdesign.com/designs/...ail/madeira_44

Fantastic! That looks like a nice boat and a good sailor, as Van de Stadt's usually are.

How much power do you get from the sails in heavy weather? Or are they usually kept under wraps?

[Scaramanga F25]

Non-turbo
! The reduction gear ratio is as important as HP. 3 t0 1 if prop clearance allows.

[Zzmeyer]

I've had Yanmar for 30 years and have yet to buy a part (other than normal maintenance) so I can't help you there. Tells you what I think of Yanmar. The Volvo, I believe is really a rebranded Perkins, has had ongoing problems with their electronic controller (MDI), but I'm getting a pair of 60's in my catamaran as they wanted too much more for the Yanmar. And those who have suggested Beta seem to love them. Probably can't go wrong with any of those. I guess you should prepare for an engine failure so I would be inclined to go with what is more popular in your area (the cost of repair, unless you do itself,is primarily labor so having lots of people who know your engine should help with the cost)

[a64pilot]

The recommended engine does sound big, but maybe the designer knew what they were doing?
I’d suspect without knowing anything at all about that boat, but maybe it’s considered a motor sailor? That would explain the recommendation of the big motor.

[MJH]

Originally Posted by yachtodyssey

Hi dear colleagues!

Maybe someone was dealing with these engines.

We want to install a Yanmar 75 on aluminum 12 ton 44 ft boat, and also thinking about Volvo D2-75 or D2-60 (perhaps rather weak). Yanmar is little bit expensive than Volvo.

Some argue that Yanmar is more economical than Volvo and its parts are cheaper. Is it so?

Cheers!

I would suggest you decide what prop you want on the boat and consider the proper transmission ratio for the boat's best performance.

My boat has a published displacement of 29,147 lbs. but it usually weighs in during a haul at 32,000+ lbs. with 150 gals. of fuel and 200 gallons of water. It came to me with a brand new Volvo Penta D2-55B engine in 2007 and a Michigan fixed prop. I have upgraded to a MaxProp and learned afterward that the Velvet Drive transmission (model 10-17-008) ratio of 1.91 is low and not upgradable to a higher ratio which would be a better match for the prop; I would have to swap-out transmissions at a ridiculous cost that is not acceptable. So, get yours right from the get-go! My boat has never reached the computed V-hull speed on flat water/no current under engine alone.

As for the Volvo Penta D2-55 it has been very reliable over the 1600 hours I have logged.

~ ~ _/) ~ ~ MJH

[yachtodyssey]

Originally Posted by wingssail

How much power do you get from the sails in heavy weather? Or are they usually kept under wraps?

Not big secret) Pls see polar diagram bellow.

[yachtodyssey]

Originally Posted by MJH

I would suggest you decide what prop you want on the boat and consider the proper transmission ratio for the boat's best performance.

My boat has a published displacement of 29,147 lbs. but it usually weighs in during a haul at 32,000+ lbs. with 150 gals. of fuel and 200 gallons of water. It came to me with a brand new Volvo Penta D2-55B engine in 2007 and a Michigan fixed prop. I have upgraded to a MaxProp and learned afterward that the Velvet Drive transmission (model 10-17-008) ratio of 1.91 is low and not upgradable to a higher ratio which would be a better match for the prop; I would have to swap-out transmissions at a ridiculous cost that is not acceptable. So, get yours right from the get-go! My boat has never reached the computed V-hull speed on flat water/no current under engine alone.

As for the Volvo Penta D2-55 it has been very reliable over the 1600 hours I have logged.

Thank you ! A very important point about prop.

A full understanding of what to install will arise after choosing an engine.

I also like MaxProp (version with 4 blades) but the price is 3300 usd does not allow yet to buy it.

And I would like to have two identical ones, one for the reserve.

But I will definitely consider your experience.

[CarlF]

Yanmar is slowly converting its engines to common rail injection. While I think the 4JH4 HE is still available with mechanical injection the smaller 4JH4 has been replaced with the 4JH57 57hp with common rail.

Many people don't like common rail because they are not really owner repairable if something goes wrong with the common rail computer. This can theoretically happen from a lightening strike (although I don't know if this can happen in the new Yanmars).

But I'd probably go with the 75HP engine anyways. It's the same size engine. These are small and light compared to engines from 20 years ago. Confirm with the builder that with the chosen prop and transmission your normal cruise speed will be at 2100-2400RPM which is right near the maximum torque for the engine (a good place to be - see attached diagram). 2100rpm would be 65% of the 3200 max RPM and would not cause carbon buildup. You'll have good fuel economy and low noise.

While it's bad to run diesels habitually at under 50% RPM, it's probably worse to run above 80% for extended periods (although a daily 5 minute run at full RPM to burn off carbon is a good thing.).

I also don't have experience with Volvo's. My Yanmar's in three boats have been been joy's. Parts availability has always been easy - although the US dealers do have territories and won't sell outside their territory.

A feathering or folding prop is a very small percentage of the boat price and will make a bigger improvement in your sailing improvement than just about anything else. While Maxiprops are good, I prefer the Flex-o-fold (same or greater thrust, less likely to grab fish traps and weed, no annual greasing, less expensive)

[malbert73]

CR will probably be considered the norm in a decade or less. But for now I think there are possibly bugs to be worked out. When I chartered last year the base engineer told me lightning has taken out an ECU or two also

[kev_rm]

Among diesel engine brands, I would pick yanmar in the top 3 and volvo dead last.

[Toccata]

I have an Oceanic (Savage) 46' approx 9t
Fitted with the Yanmar 75Hp
It is too powerful for this boat. Hull speed at 2000rpm.
Parts:
Turbo clagged. Initial replacement quote 5k, however eventually purchased for 3500. Starter motor 1000. I would far rather have a non turbo (naturally aspirated) motor.

Servicability:
All parts available but expensive. Check a comparative price for an exhaust elbow. Service items accessible..

Another factor I would also consider at a new purchase time is, can you readily fit a second alternator? The Yanmar is difficult in this regard

[yachtodyssey]

Thank you. Indeed D2 Volvo have ability to fit second alternator, for Yanmar it’s not easy.