Quote:
Originally Posted by pbonsalb
You can certainly make an improvement by painstakingly combing the fins, but you won’t make the heat exchanger like new. I have done this on some cars. The fins are staggered so you are really going row by row and nit combing. I use a small thin screwdriver and a small pair of needle nose. Have fun.
As for the screen, too fine a mesh blocks airflow. I don’t know what the ideal mesh square is. 1/4? 5/16? 3/8? Have thought about this myself. You can make your own, but Zunsport and other companies may sell premade ones.
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Yes, it’s not like an HVAC residential coil…these contain small squares of fins, and it will be very painstaking. So if staggered, won’t be able to push them out from the engine side…
As far as the protective mesh. I saw some photos of people doing it, and it didn’t look ghetto. I will try to look it up to see what size mesh they used. But there is a valid concern, as far as the size and blocking airflow, otherwise BMW would’ve had these coming installed from the factory.