Volvo TAMD22 and Perkins Prima M80T

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ReaperZE2

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Hi

I’ve been following this forum for a while but this is my first post, and I was hoping for some advice from some Volvo or Perkins experts.

Is the block and cylinder head castings on the 105hp Volvo TAMD22 the same as the Perkins Prima M80T as fitted to Montegos, Maestros and Sherpas?

I have a Volvo TAMD22P-B which has suffered fairly catastrophic failure; dropped rod resulting in a holed block, damaged crankshaft journals, snapped camshaft and damaged camshaft bearing surfaces in the head. Replacement Volvo parts are not viable due to the cost so I was hoping I could salvage a Perkins Prima M80T long block from a Montego, Maestro or Sherpa.

I made the assumption that the Volvo TMD22 and Perkins Prima M80T have the same long block as they are both 80hp? Going through the Volvo parts catalogue the TAMD22 and TMD22 long blocks seem to share all components except the:
• pistons
• piston rings
• camshaft
• cylinder head??? - I can’t find part numbers for the cylinder head casting as they are discontinued. The part numbers for reconditioned heads are different but that may just be due to the different camshaft fitted rather than the casting?

My Plan was to try and get a Prima engine out of a Montego etc, retain the block, crank, con rods, head, valve gear and fit new pistons, rings and camshaft for a Volvo TAMD22. This would cost hundreds rather than thousands!

Does anyone know if this is possible, or have any other suggestions?

Many thanks in advance.
 
ReaperZE2 said:
Hi

I’ve been following this forum for a while but this is my first post, and I was hoping for some advice from some Volvo or Perkins experts.

Is the block and cylinder head castings on the 105hp Volvo TAMD22 the same as the Perkins Prima M80T as fitted to Montegos, Maestros and Sherpas?

I have a Volvo TAMD22P-B which has suffered fairly catastrophic failure; dropped rod resulting in a holed block, damaged crankshaft journals, snapped camshaft and damaged camshaft bearing surfaces in the head. Replacement Volvo parts are not viable due to the cost so I was hoping I could salvage a Perkins Prima M80T long block from a Montego, Maestro or Sherpa.

I made the assumption that the Volvo TMD22 and Perkins Prima M80T have the same long block as they are both 80hp? Going through the Volvo parts catalogue the TAMD22 and TMD22 long blocks seem to share all components except the:
• pistons
• piston rings
• camshaft
• cylinder head??? - I can’t find part numbers for the cylinder head casting as they are discontinued. The part numbers for reconditioned heads are different but that may just be due to the different camshaft fitted rather than the casting?

My Plan was to try and get a Prima engine out of a Montego etc, retain the block, crank, con rods, head, valve gear and fit new pistons, rings and camshaft for a Volvo TAMD22. This would cost hundreds rather than thousands!

Does anyone know if this is possible, or have any other suggestions?

Many thanks in advance.
Click to expand...

You are on the right track, Prima block and crank is common across all engines. I think basic head casting is the same.

New Prima turbo cams may still be available, a few years ago turbo engines were pretty popular as land rover conversions, to me the cam is the only sticking point.

Obtain turbo pistons from a engine reconditioners, far less expensive than V.P.

There is a late N/A Prima on Ebay now, £325 could be your salvation.

Good luck.
 
April and May PBO had article on salvaging a Prima engine to use as a spare. Guy did a complete strip down. He stated that the engine in the LDV van was the most compatable to his Volvo which was the MD22L which predated theTAMD22. One issue he had was that earthing of starter motor was by cable. Cant find the editions of PBO at moment but will have a look later and confirm what the set up is.
 
Many thanks for your replies folks.

I had assumed pistons and camshaft were unique to the Volvo 105hp engine because they seemed to be a different part number to the 80hp version. The cam is still available from Volvo for about £400.

Do you have any suggested engine reconditioners who might stock pistons for the 105hp engine?

I'd be interested in the outcome of the PBO article if you get a chance.

Thanks again.
 
Jcorstorphine said:
April and May PBO had article on salvaging a Prima engine to use as a spare. Guy did a complete strip down. He stated that the engine in the LDV van was the most compatable to his Volvo which was the MD22L which predated theTAMD22. One issue he had was that earthing of starter motor was by cable. Cant find the editions of PBO at moment but will have a look later and confirm what the set up is.
Click to expand...

That article was written by skipper stu who posts here regularly. He is of course well up on this engine and its variations.
 
ReaperZE2 said:
Many thanks for your replies folks.

I had assumed pistons and camshaft were unique to the Volvo 105hp engine because they seemed to be a different part number to the 80hp version. The cam is still available from Volvo for about £400.

Do you have any suggested engine reconditioners who might stock pistons for the 105hp engine?

I'd be interested in the outcome of the PBO article if you get a chance.

Thanks again.
Click to expand...

I quote from the leaned gentleman who rote the article in PBO and take no credit for the information

Quote

"The difference is that VP use a cable battery negative earth return i.e. the block is not connected electrically so earthing for the starter and the alternator is achieved by separate cables. The Glow Plugs utilise a strange system: they are earthed through the block so there is a relay in the system that temporary earths the block while the glow plugs are used"

end quote

From my perspective and my hatred of Volvo (spares etc) I wonder if this a ploy to be able to sell special starter motors / alternators at eye watering prices as an off the shelf Perkins spec starter motor would not have an isolated stud to take the earth cable.

In your search for spares, I assume you have contacted parts for engines

http://www.parts4engines.com/volvo-penta-md22/
 
Thanks for the info.

Yes I've spoken to parts4engines. They can help with some of the common parts but not parts specific to the turbo charged models although they did say they were hoping to expand their stock to include these in the future.
 
Jcorstorphine said:
April and May PBO had article on salvaging a Prima engine to use as a spare. Guy did a complete strip down. He stated that the engine in the LDV van was the most compatable to his Volvo which was the MD22L which predated theTAMD22. One issue he had was that earthing of starter motor was by cable. Cant find the editions of PBO at moment but will have a look later and confirm what the set up is.
Click to expand...
That's Because Volvo like to use an insulated earth system in order for the gauge system to work more accurate.
 
Hi lads, i have the Tamd22p-b

And can confirm the Cam is different then all perkins and other md22 types.

The lobes are slightly longer. Leaving the valves open that little bit longer.

The tamd22p-b Cam however, will fit in the turbo cylinder heads, and non turbo i think.

Any more info, ask away. 4 years of trouble with this engine, has taught me stuff i never wanted to know lol.
 
thanks for the reply jw_2000_uk

do you know if the cylinder head and block are the same?

bit worried to hear you've had 4 years of problems with this engine. I'd always thought they were really reliable, strong engines?

Cheers
 
ReaperZE2 said:
thanks for the reply jw_2000_uk

do you know if the cylinder head and block are the same?

bit worried to hear you've had 4 years of problems with this engine. I'd always thought they were really reliable, strong engines?

Cheers
Click to expand...

Im 99% sure the heads are mate. As my head is a prima head now, parts numbers were identical to.

The block im not sure (as i salvaged mine, with a rebore + OS pistons), obv a different problem then yours. The only thing that might be different is bore size and piston size mate, again, something you could machine to tamd22 spec.


My problems all stem from trusting marine engineers. Turned out to be a crack in my bowman, what i found. That was after blowing thousands on uneeded work.

There simple engines mate, dont trust people who you dont think arnt 100%.

Reasembling from block up really isnt a daunting task with the correct tools.
 
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Oh, and ours has 4 cooling jets cooling the piston.

Again, something you can take from your old block and fit to the new one. Just make sure the castings are there to fit them
 
Hello again,

Thought I'd better update this thread for the benefit of anyone else who finds themselves in a similar situation. I've finished my engine rebuild using parts from a Turbo Diesel Montego and have run the engine this season without issue. Some details below. Cheers

block
• Montego and Volvo block castings were identical
• I assembled the Montego block, crankshaft and con rods with new bearings and my original Volvo pistons and found the piston protrusion was too low. I had 2 options: fit new pistons with higher height class or machine the top of the block to achieve the correct protrusion. I opted to machine the top of the block due to the price of Volvo pistons and it had the advantage of giving me a nice new face for the cylinder head gasket to seal
• I had to remove the Montego oil return pipe at the back of the block and blank it off with a core plug

crankshaft
• Identical apart from the diameter for cambelt pulley so I used the Montego crankshaft with the Montego pulley

camshaft
• not the same. Different lift. I sourced new from DiPerk

pistons
• pistons and rings are not the same. I reused my Volvo pistons and fitted new rings from DiPerk

head
• same except height difference – I used the Montego head and machined it to bring the head height and valve depth into specification
• I also used the Montego valve gear

Turbo
• Same except wastegate actuator
• orientation of tubine and compressor housing were different although that is easy to adjust
• mounting points in compressor housing for waste gate actuator are different but could re-use Volvo compressor housing or drill Montego one
• my Volvo bearing housing and turbine housing were heavily corroded so I had the turbo reconditioned using the bearing housing and turbine housing from the Montego

good sources of spares
• diperk - I didn’t tell them it was a Volvo I just gave them the engine number and they found it on their system. Parts were about half the price of Volvo parts
• parts4engine is also a good source of aftermarket spares

Be very carefull with oil filters. I sourced a perkins filter which I think was intended for a different model in the prima range. It screwed on and tightened up as normal but when I attempted to start the engine and the oil pressure built up it blew the filter off. Luckily I was priming the fuel pump at the time so the engine didn’t start. Turns out the filter I had had a 13/16” 16 tpi thread, I needed one with a ¾” 16 tpi thread!!
 
Hi I just rebuilt my TAMD22 pb top end & used a Perkins cam & my boat won’t accelerate over 3200rpm under load now & iv fitted a new turbo as looked rusty inside but still no gains in the revs but revs fine in neutral to a full 4600rpm I have read through this article & I belive I have fitted the wrong cam with shorter lobes ie the md22 or prima cam 😫😫 Volvo don’t sell the tamd22 pb cams no more does anyone know were I can source one please many thanks
 
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