w202 C36 3.6 crossover tube vs m104 e320 crossover tube

[Rouven036]

Here, just tried to get some photos today. Not the best but something at least.

Heat shield is 3 pieces. The main panel is fitted on original screw holes on the chassis longitudinal member and reaches behind the original downpipe heatshield on the firewall. So in this way the whole wheel arch fitted stuff is up to the half height of the air filter housing shielded off from header radiation. The headers have a 2 piece heatshield, on the photo only the front section is fitted, rear not yet.

Header heatshields are fitltted to the engine.

 

[yao500e]

Here, just tried to get some photos today. Not the best but something at least.
Heat shield is 3 pieces. The main panel is fitted on original screw holes on the chassis longitudinal member and reaches behind the original downpipe heatshield on the firewall. So in this way the whole wheel arch fitted stuff is up to the half height of the air filter housing shielded off from header radiation. The headers have a 2 piece heatshield, on the photo only the front section is fitted, rear not yet.
Header heatshields are fitltted to the engine.

Excellent work @Rouven036

What brand or type of heat shield did you use to make this? Is it aluminum? I know exactly the location you showed in your pics.

That is the front 3 cylinders manifold. I have a few pics to show you about a possible solution as well. but your work looks great already.

The M104 manifold headers emits a lot of heat. All the engine parts near it are super HOT after a 1 hour or so drive. Putting a heat shield ABOVE IT and leaving the headers open on the bottom will force the radiating heat away and below the engine bay.

I'll post a few pics soon of something i found as well. thank you for this.

 

[Rouven036]

Thx. It's an aluminium sandwich with an fiber insulation layer in the middle. It's from a porsche cayenne engine with a hot v (twin turbo cover in the v) and cut and shaped as needed.
There is a easier to work with Single layer sheet which you will find on alot of modern cars above the exhaust mufflers.

Again on engine bay temps, during driving conditions on open roads/highway speeds the engine bay is thoroughly flushed with warm air and radiation effects don't play such a big role, particularly on an inline engine with space around (m104 in W201 is not so roomy due to the big head or pass over construction of the intake) . On the other hand the v8 124s are packed with the big engine so they are generally more affected.
The whole heat thing comes up in city or stop and go traffic. Performance is for me here the lesser issue rather than accelerated aging due to high ambient temps.