6.9 Engine Mods by MKB

[Oversize]

Erhard Melcher was one of the founding members of A(M)G and the engineering brains behind the brand, who then went out on his own way back in 1970. Melcher founded MKB which then conducted much of the R&D for AMG and many other tuners. They actually developed the Hammer (DOHC 4V) M117 and supplied many of the race engines to AMG!

The MKB website is still advertising upgrades for the 6.9 for anyone with deep pockets!

https://www.mkb-tuning.de/en/classicengineering/M_100_6,9l_mit_MKB_Tuning.php

They went into administration back in Feb 2020, but seems they're still kicking now....

They've turned to the early classics to survive and even do a 5.6 upgrade for the 450 M117!

https://www.mkb-tuning.de/de/classicengineering/M117_450SL_ 5,6l.php

 

[c107]

They've turned to the early classics to survive and even do a 5.6 upgrade for the 450 M117!

Interesting. I guess theoretically possible to bore it out and run a 560 crank in the iron block.

 

[motec 6.9]

So not as much work as Galloway have done to the 6.3

 

[Oversize]

No but it’s great news others are catering for the old girls! This also means things might improve regarding OEM (or genuine) spares.

 

[john erbe]

Anyone have an idea or data as to how much off a performance increase you get for just the " Enlarged and polished intake and exhaust ports" on the heads?

 

[Oversize]

Anyone have an idea or data as to how much off a performance increase you get for just the " Enlarged and polished intake and exhaust ports" on the heads?

No data, but I seriously don’t think those mods are of huge value when you consider cost vs benefit. The main issues restricting power gains are the manifolds & throttle.