Re: Placement of Beta 60 in an Amel Maramu #replacement

Danny and Yvonne SIMMS

Hi Eric, it wasn't an hours issue. What caused its demise was the misunderstanding about rpm. It was maxing at 2800 rpm under load and the consensus on the forum was that there must be something wrong since under no load it would easily do 4000. Many of us tried to resolve what wasn't an issue. So when after about 2 years and 25000 sailing miles suddenly it would rev up to  3500 under load I thought it had resolved whatever was wrong. HOWEVER 2800rpm was the correct max under load and the ability to rev higher was caused by a jammed wastegate on the turbo. This is intended to open progressively to reduce the boost as revs increase.  So with it jammed closed the boost pressure was excessive, hence the higher revs achieved. Not that I ran it at high revs a lot, but over several years the excess pressure damaged the rings and pistons and eventually I couldn't get better than 2200 rpm under load. I tried everything without success including quite a lot of Volvo specialist time. So one day, having had the engineer on board yet again I said and ordered a new one. In retrospect it would have made more sense to do a recondition on the TMD22 since I had replaced most of the bolt ons.

So you TMD owners. 2800 load rpm is correct and if you are getting more, check the waste gate.

Happy New Year to you all


SM 299

Ocean Pearl

On 31 December 2020 at 17:22 eric freedman <kimberlite@...> wrote:

Hi Danny,

How many hours were on your engine before you replaced it?

Fair Winds


Kimberlite Amel Super Maramu #376



From: [] On Behalf Of Danny and Yvonne SIMMS
Sent: Wednesday, December 30, 2020 1:00 AM
Subject: Re: [AmelYachtOwners] Placement of Beta 60 in an Amel Maramu #replacement


Hi. The Beta spunds a good option. However I repkced my tmd22 with  volvo d275 and with 1300 hpurs up it is going well. Plus points. It has significantly more torque. Even with the propellor barnacle encrusted it pulls its standard 3000 rpm. Existing gearbox bolted on. Enging mount hole  positioning was identical, fitted perfectly onto the egine bearers. All we had to do was make new forward end spacers to align the engine. Could not have been easier.

It is significantly lighter than the tmd22 and this shows in the fore aft trim. It is a turbo. But no timing belt. It is a push rod engine, not ohc. I did not make up the spacer alignment tool for this job, nor for the engine mout repacement this year. No difficulties at all. Nil vibration.



SM 299

Ocean pearl

On 30 December 2020 at 16:35 "michael winand via" <mfw642000@...> wrote:

The Beta 60 has more torque than the tmd22. The hp is measured at the gearbox output 
I would say that the Beta 60 has the same power as the tmd22 but lower in the rev range. My cruising revs is around 1800 and 6kn  flat out 2200 and 7.5 kn in flat calm water. 30kn wind on the nose would be 4kn 

The cubic capacity makes a difference.  It is nice to have no  turbo  and no timing belt. 

Michael Nebo sm251 




On Wed, 30 Dec 2020 at 1:03 pm, Germain Jean-Pierre

<jp.germain45@...> wrote:

Hello Larry on Sulawesi,


Is the Beta 60 sufficient for an SM?  A


Curious as I would like a non TC engine when I have to replace my Volvo TDM22.


Kind regards,


Jean-Pierre Germain, Eleuthera, SM007, NZ


On 30 Dec 2020, at 14:08, Larry Salibra <larry@...> wrote:

Hi Dirk,

Sula (SM 140) also has a Beta 60 fitted by the previous owner. She has the standard 70 amp 12v insulated return alternator and the 24v 60amp insulated return secondary alternator. No adjustments were made to oil and fuel filters.

SM140 Sula
Hong Kong





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