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Discussion Starter · #1 ·
Hello all.
Yesterday I was looking at my new 190E 2.3 and found that the air filter intake was loose. I will explain it: checking with another similar models, I found that there is a plastic piece by the side of the radiator that collects the air at the front of the car and enters it in the air intake. It is a kind of funnel.
The thing is that my radiator is not OEM, so that piece was removed because it doesn't fit anymore, so the air pipe is standing at about 15cm from the front of the car. My question is: Should I expect a reduction in performance due to air starvation of the engine or is it completely unnoticeable?

Thanks!
 

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2002 SLK 32 AMG, bone stock. 1987 190E 2.3-16 valve (destroyed). 2005 E320 new toy.
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That air horn directs cooler air from in front of the radiator to the filter box.....

Without the horn you will suck warmer air from the engine bay. There is a slight reduction in overall efficiency if you run higher intake air temps. Why take the loss?
Replace the intake horn, and when you install it, be sure that the barbs on the horn engage the lip on the intake air duct, or it will keep falling apart. Liquid soap helps with that.
 

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Discussion Starter · #3 ·
The thing is that the new A/C radiator is wider than the original one, so the inlet horn...

The thing is that the new A/C radiator is wider than the original one, so the inlet horn doesn't fit. The air duct is standing, pointing to the front, with the aperture at a distance of about 15-20cm from the grill. I expect that it doesn't suck hot air, and that the flow is enough even for high demands, what do you think?

Thanks!
 

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2002 SLK 32 AMG, bone stock. 1987 190E 2.3-16 valve (destroyed). 2005 E320 new toy.
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As I mentioned, you will lose some efficiency, how much is an open question.....

If there is any way that you can fit the intake to get outside air that is the best thing to do. You will also slightly increase the airflow through the radiator if the intake hole is plugged.
Probably no big deal at all unless you try to get the absolute most out of the engine.
 

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There will be a slightly reduced efficienty of the engine. But the difference will be totally unnoticable.
Perhaps even on the contrary: the air intake funnel that sucks the air from next to the radiator, is quite a slim piece. It restricts airflow (especially the ram-air effect) quite a bit. I've fabricated a 'custom' intake funnel for my car once. It was just a 15 centimeter diameter flexible tube, cut open and tied down so it would fit. It produced a noticable fresh air ram effect, especially on higher speeds (140kph+).

Anyways, it doesn't hurt the engine, and you will barely feel the difference. It's up to you if you get a new one or not.
 

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1985 190E 2.3
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Thanks for the replies.
Spoke to the dealer today, missing pieces (actually 4 components) total roughly 120 US$, not that bad but I believe this will come after new plug wires, etc. as getting 16 mpg city.

Also have a small 'blow by' issue but car starts and runs great.
 
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