What is this foam for? - LotusTalk - The Lotus Cars Community
 
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post #1 of 7 (permalink) Old 08-20-2016, 06:20 PM Thread Starter
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What is this foam for?

While inspecting my suspension, I noticed a small rectangular block of foam behind the rear arm of the driver's side top wishbone. It wasn't attached to anything, it was just sitting back there loose, so I pulled it out.

Does anyone know why this would be there, or what it's purpose is?
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post #2 of 7 (permalink) Old 08-20-2016, 08:33 PM
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It looks similar to the foam used around in the radiator area.

2006 Elise-Polar Blue
2016 VW MK 7 Golf R
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post #3 of 7 (permalink) Old 08-20-2016, 09:27 PM Thread Starter
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Interesting. Wonder how in ended up inside that extrusion. So there's no reason to have a piece of foam in there?
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post #4 of 7 (permalink) Old 08-21-2016, 10:15 AM
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I suspect its to prevent airflow from getting into the cabin from the wheel area (brake smell dust etc )The square tube leads directly to the HVAC area.as shown in attached picture
You may want to look at the opposite side wheel same place look down deep into the square tube and see you have foam there ?
unfortunately I,m not at home to check on my car.

That's my best guess
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post #5 of 7 (permalink) Old 08-21-2016, 11:03 AM
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yup that is what it does

Considering putting a piece of hardware cloth in there to keep the mice out

you should put it back
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post #6 of 7 (permalink) Old 08-21-2016, 01:09 PM
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Attached picture confirms it
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post #7 of 7 (permalink) Old 08-21-2016, 05:53 PM Thread Starter
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So is there supposed to be on both sides? I looked on the passenger side for comparison, and there was no foam present. So I guess what happened is that the foam block which is supposed to be orientated vertically and snugged into that opening became dislodged and was just in there loose. I know I could not have repositioned it correctly without removing the clam and/or the suspension.

If it's purpose is to seal the HVAC from the suspension/brake area, does that mean that brake dust and other road dust is now going to come out my vents when the HVAC is on? Is that area shown in the photo above where the HVAC air is drawn from?

Are these foam pieces something you can order replacements of?
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