Hello Bloodyshogun,

I am a newbie... but hopefully this helps:

Are you referring to running an AMS140 with Pump Module or without the Pump Module?

If running it without the AMS Pump Module ...then the AMS140 will be as long as you have stated.
AMS140 = 140mm+44mm = 184mm. No longer and no shorter.

Source of my Reference:
New radiators: airplex modularity system

If running an AMS140 WITH Pump Module then yes it will be longer. You have two PUMP options with AMS... Compact 600 vs D5. Pump Module adds additional length, and depending on pump also effects a measurements.
For example: Compact 600 does not add length on the Pump Module, but it does add more thickness (Sorry prob wrong terminology). D5 will add additional length on the Pump Module. PUMP Module itself only adds the same thickness as a 25mm think FAN so it will be flush in thickness with Mounted Fan.

So Question is: Are you looking to run your AMS140 with a Pump Module? If Yes then you need to add more length into the calculations. PLUS add in the PUMP Calc.

Hopefully this helps a little bit. No Technical Manuals anywhere...I have searched high and low...

I am sure a senior member on this Forum will have better insight than I.

Cheers,

Ive been looking for drawings... here attached is not an AMS140, but it is a drawing of an AMS240! Therefore you might be in luck to find a AMS140... I hope you do. :-)