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The latest iteration of Merkava is called Mark 4 Model 400, which has a newer C2 system and enchaned TROPHY (you can tell by the added optical sensor). kinda interesting because although MK 4 had seen many modifications and improvements throughout the years this is IMO the first time that the IDF officially names a new Mark 4 version

 

https://www.idf.il/אתרים/חטיבה-188/2020/טנק-סימן-4-חטיבה-188/

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In 2019 there was a FMS contract for the IDF acquiring 240 MTU GD883 to equip new-built Namer. My question is since the water-cooled MTU engine is considerably more compact than the AVDS-1790, do you think the IDF intends to increase the number of crew seats by shrinking the size of the Namer's drive train compartment? 

 

Will it be considered as the Namer Mk II?

 

PS: I am putting a link of the report which went relatively unnoticed back then:

https://www.defenseworld.net/news/24259#.YABCYehKhPZ

 

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The MTU 883 is not at all smaller than the AVDS 1790. The engines are approximately the same length, similar width (though the 883 is square and the AVDS is trapezoidal in section and a tad wider at the top), and with the cooling system on top similar height (though the MTU has a more optimised slope for hiding behind the glacis). You would note, that the engine compartment on the Merk 4 is not notably shorter than the same on the Merk 3.

Likewise, the Renk 325 transmission that goes with the 883 is slightly fatter than the Renk 304 which goes with the 1200 HP AVDS 1790, so there's no real room saved in the engine compartment. Definitely not the approximately 60 cm you'd need to cram in another seat.

I would also question the tactical utility of being able to seat more people in a Namer, as it already carries a full infantry squad.

 

The IDF don't appear to have said anything about it yet, but they tend to keep quiet anyway.

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