Volvo 2010 Engine Mounts

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skipper021

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This winter’s project is to change all 4 engine mounts as I got a rope around the prop just before coming ashore in November. The rubber on the aft mounts partially detached from the metal part of the mount so at least the aft ones would need changing, but I am thinking of replacing all 4 as they are around 20 years old.
The standard VP mounts which were fitted are different types fore and aft on the MD2010, the engines are supplied with part nr 861460 at the front and 838262 at the rear.

Anyway, I removed both aft mounts today, and ran into a problem. Each mount is bolted onto the engine beds with two coach bolts of unknown material, probably not very good material as 3 of them sheared off!
Now, I am considering replacing these engine mounts with Silent Marine AV Mounts, rather than like for like VP mounts. Here are details of the Silent Marine AV Mounts: (Marine Engine Mounts: AV Mounts Online) which would cost about £124 for all four including height adjuster bolts.

The mounting base of the Silent Marine mounts are 100mm between centers so I would need to drill new holes into the engine beds, which are grp covered wood as far as I am aware. This would neatly sidestep the sheared off bolt holes as the new holes would be inside the foot print of the old VP mounts which have a hole centre of 125mm.

In principle, does anyone see any particular reason not to do this?
 
skipper021 said:
This winter’s project is to change all 4 engine mounts as I got a rope around the prop just before coming ashore in November. The rubber on the aft mounts partially detached from the metal part of the mount so at least the aft ones would need changing, but I am thinking of replacing all 4 as they are around 20 years old.
The standard VP mounts which were fitted are different types fore and aft on the MD2010, the engines are supplied with part nr 861460 at the front and 838262 at the rear.

Anyway, I removed both aft mounts today, and ran into a problem. Each mount is bolted onto the engine beds with two coach bolts of unknown material, probably not very good material as 3 of them sheared off!
Now, I am considering replacing these engine mounts with Silent Marine AV Mounts, rather than like for like VP mounts. Here are details of the Silent Marine AV Mounts: (Marine Engine Mounts: AV Mounts Online) which would cost about £124 for all four including height adjuster bolts.

The mounting base of the Silent Marine mounts are 100mm between centers so I would need to drill new holes into the engine beds, which are grp covered wood as far as I am aware. This would neatly sidestep the sheared off bolt holes as the new holes would be inside the foot print of the old VP mounts which have a hole centre of 125mm.

In principle, does anyone see any particular reason not to do this?
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As a standard rule the reason for the two types for and aft are because of the differing loads/weight of the engine. The heavy end will need the rubber to be more rigid. You need to be able to find the weight of teh engine and then extrapilate the load for and aft.
 
I think I have the weight aspect covered, Silent Marine do 4 different density mounts for this size mount - 40kg/45kg/55kg and 65kg
The total weight of the engine & gearbox is 113kg, so I am thinking 45kg for the the front & 55kg for the rear mounts.
But I will talk it over with them tomorrow/Tuesday
 
vic008 said:
Have never understood how you can load up 4 mounts equally. Three mounts certainly, but 3?
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Isn't your kitchen table stable or does it rock around as you are eating?

Wouldn't you aim to mount up the front two equally and then the aft two equally?

As the motor may be heavier (or lighter) at the front it would not be possible to load them up equally?

But what if the front left side was heavier than the FRS and the Rear left side was lighter than the RRS...........:eek:
 
skipper021 said:
I think I have the weight aspect covered, Silent Marine do 4 different density mounts for this size mount - 40kg/45kg/55kg and 65kg
The total weight of the engine & gearbox is 113kg, so I am thinking 45kg for the the front & 55kg for the rear mounts.
But I will talk it over with them tomorrow/Tuesday
Click to expand...
Looking at various pictures of the MD2010 I would have thought that the position of the mounts for the engine should be 55kg as the majority of the weight is in the engine and the gearbox end 45kg. Only my opinion.
 
vic008 said:
Yes they have some. Is the 2030 the same as 2003 please?
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No but its the same a Perkins M30 dont no why the engine mounts are more expensive for the 2030 than the m30
As the same mount of hardness 45 is recommended for both engines.
 
After a chat with the helpful chap at AV Industrial Products, I have ordered a set of new engine mounts.
When I gave him the weight of the engine & gearbox (113kg) and a description of the current mounts and 'shore' hardness markings, he calculated that the best option was 55kg rated mounts (220kg combined capacity across 4 mounts) and this setup would give an estimated maximum deflection of around 1.6 to 2mm
So, cost for 4 X mounts, 4 X stepped height adjusters with nuts & washers, and postage came to £141.17 + VAT (Total £169.40)
 

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Looking at replacing the mounts on a Perkins M20 and the recommended 45 shore hardness mounts come to £103.90 including vat and postage.This is at Parts4engines.
 
peteK said:
Looking at replacing the mounts on a Perkins M20 and the recommended 45 shore hardness mounts come to £103.90 including vat and postage.This is at Parts4engines.
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A chat with Jeremy is always worthwhile. He knows his stuff ref these mounts.
 
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