Volvo tamd22 vs montego 2.0td differences.

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jw_2000_uk

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Hi everyone.

Its been a ongoing saga

Ive been let down on a shoddy rebuild of my tamd22p-b

After refitting to boat, it wasmt right, been stripped and the report wasnt good.

So bad that the block/pistons have been battered during the rebuild.

Its looking cheaper to get a 2.0td engine/block & strip check.

And bolt on my marine parts i.e. Auxilleries/gear box/bowman etc to it.

Do you know if thats possible? They look so similar in pictures.

Any help would be great.
 
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I wouldn't like to say for sure but the pump will probably be different & possibly pistons, when yamaha & yanmar use the toyota 4.2 engine they both use different pistons to toyota
The volvo engine is perkins built & was used for several applications so possibly several build specs
If I was doing the job I'd have the two engines side by side & measure everything carefully
Check ring heights, section & combustion chamber size
If it measures up then no reason why you can't use the automotive engine
Good luck with it!
 
As far as I can remember you can use a montego/ Perkins from automotive stock.

I'd like to hear how and why it's been battered , I know priming the oil pump is required through a plug in the front cover as it won't suck first time after a rebuild or even a head gasket change.
 
Thanks for the replies lads.

Hmmm. Never knew about the priming. Although you would think they would know that.

I did prime the turbo on first use etc.




Well a trusted engineer. Who has dismantled it, said it looks like theyve used a hammer and screwdriver to rebuild it.i seen the damage with my own eyes.

Crank is damaged/dings in it.

Cyl 1 needs reboaring now. So all 4 pistons need oversizing now.

When they skimmed the block, they managed to skim the top of one of the pistons.

The list goes on.

Ive learnt so much about these engines due to all this. Just all to late. As ive wasted thousands on inept mechanics.
 
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The basic engine is the same, turbo/ non turbo used a different head. You will have to swap backplate, flywheel, water pump and starter as road ones are different, but the block is the same.
 
macnorton said:
The basic engine is the same, turbo/ non turbo used a different head. You will have to swap backplate, flywheel, water pump and starter as road ones are different, but the block is the same.
Click to expand...


That all makes sense. I have the hs25a gearing on mine.

So with the bell housing casing off the tamd. That should be fine.

Its technically only the block/crank + pistons (bonus) i need.

One thing i did notice.

Tamd22 105hp 4500rpm

Perkins 78hp 4500rpm

What part added the extra HP?

Thanks again.
 
jw_2000_uk said:
Thanks for the replies lads.

Hmmm. Never knew about the priming. Although you would think they would know that.

I did prime the turbo on first use etc.




Well a trusted engineer. Who has dismantled it, said it looks like theyve used a hammer and screwdriver to rebuild it.i seen the damage with my own eyes.

Crank is damaged/dings in it.

Cyl 1 needs reboaring now. So all 4 pistons need oversizing now.

When they skimmed the block, they managed to skim the top of one of the pistons.

The list goes on.

Ive learnt so much about these engines due to all this. Just all to late. As ive wasted thousands on inept mechanics.
Click to expand...


WTF!!! Skimmed the block with the pistons in??????????
 
Tamd22 105hp 4500rpm

Perkins 78hp 4500rpm

What part added the extra HP?

Thanks again.[/QUOTE]

Probably the injection pump , injectors,turbo & possibly compression ratio
use the marine engine pump & injectors & accurately measure combustion chamber size with a vernier or better still use a pippet / syringe to measure volume
 
Beamishken said:
Tamd22 105hp 4500rpm

Perkins 78hp 4500rpm

What part added the extra HP?

Thanks again.
Click to expand...

Probably the injection pump , injectors,turbo & possibly compression ratio
use the marine engine pump & injectors & accurately measure combustion chamber size with a vernier or better still use a pippet / syringe to measure volume[/QUOTE]


All that is fine on mine. So can bolt on ;-)

Compression ratio is 17.2 : 1 perkins

On my tamd22 its 17.5: 1

Would that be a adjustible value on the perkins?
 
No it isn't something you can adjust without changing components
Either the head will be different or the combustion chamber in the piston could be different
If the original head is good use it & if not measure the valve diameter and recess & any void in the replacement head, its usually fairly easy to spot differences if the heads are side by side
Same with the pistons measure the volume of the piston recess & any piston protrusion
& don't be tempted to get the block skimmed I've built many engines over 30 years & never needed to skim a block. Heads yes to true them up but never a block if a block is warped junk it and find another
 
All that is fine on mine. So can bolt on ;-)

Compression ratio is 17.2 : 1 perkins

On my tamd22 its 17.5: 1

Would that be a adjustible value on the perkins?[/QUOTE]

The piston kit is different, I'm sure that's where the compression ratio is changed although its been a few years now since I have seen one of these so check to be 100%.
I have never yet heard of skimming block with pistons in, shocking !!!
 
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tinkicker0 said:
WTF!!! Skimmed the block with the pistons in??????????
Click to expand...

I'm not an expert engine mechanic, this seems a very dubious process because of swarf etc getting down between the piston and bore. However, should the pistons have been so high up that they were skimmed by the process ? Surely, if so after skimming a (bare ) block the piston heads would have protruded and possibly hit the cylinder head ?
 
Diesels often have what is termed piston protrusion and they do come above the combustion deck. It is often the bane of my life getting the correct heights.

As an example since it is fresh in my mind from this mornings session with dial gauge, a Cummins 6ISBe motor has an allowable protrusion above the combustion deck of 0.004" to 0.019".

As for pistons in the block, one wonders how they got it square on the mill / grinder table if the crank was in.
 
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Is it possible to move the fuel system from your old engine? Then the fuel calibraton might be ok. Fuel pump an nozzes might be different. Then its the turo. You have to check the spesification turbine trim is often bigger on higher rating. The high rating engine also need a bigger intercooler. If you can use the old turbo its ok.

I have done this myselves on a ford engine. It was a lot of work to get the marine spesification on nozzles and turbo. Timing migt also be different.

You should have a engine expert going thru setup before you put it in boat.
 
aquapower said:
All that is fine on mine. So can bolt on ;-)

Compression ratio is 17.2 : 1 perkins

On my tamd22 its 17.5: 1

Would that be a adjustible value on the perkins?
Click to expand...

The piston kit is different, I'm sure that's where the compression ratio is changed although its been a few years now since I have seen one of these so check to be 100%.
I have never yet heard of skimming block with pistons in, shocking !!![/QUOTE]

There are differences in the heads, I was told that by an engineer who worked at Perkins for many years.
Perkins also had a habit of fitting different piston rings to marine engines as they stand unused for long periods (winter lay up), a friend has had a road engine in his boat for years and has no problems so I don't think you need to worry. Unless you need the extra power fit the manifolds and pumps and bolt it in.
 
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