During my tenure I have noticed sometime that water temps go quite high , and the design of the rad layout is suboptimal. I guess AMG know what they are doing , but some things are done for budget reasons .
This is an image of a stock rad combo setup on a C63
Pretty impressive number of coolers there , right ?
The problem I have been experiencing when on track is the gearbox has been reverting from manual to sport , or even comfort after 6-8 bazai laps at Blyton. I also noticed once that I got the water temps high enough that it cut power ( this was pre long tube manifolds BTW ! )
I have been speaking to the ever helpful and super knowledgeable
@Paul B of Diamond Performance for a few weeks on what can be achieved to improve the cooling, and what cant.
We decided on a rather simple "blocking" sheet fitted to stop the lovely cold air going across the front faces of the coolers and heading up towards the bonnet and actually force it THROUGH the coolers. The crucial one for me was the transmission cooler - thats the one located towards the bottom and two metal pipes exiting on the drivers side.
Some pics of the device being fitted.
I can confirm that after a run back from Pauls the water temps never went above 92 degrees and were often bang on 90 degree C. This is around 10% lower than before. I have no dyno figures , or transmission temps to check on track . Best sort that ...
The part looks OEM fresh , fits perfectly and most importantly does its job. I believe Paul @ Diamond Peformance will be selling these soon !