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Old 06-18-2022, 10:30 PM   #355 (permalink)
Talos Woten
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Join Date: Jun 2022
Location: Aliquippa PA
Posts: 107

Champrius v3.2 - '09 Toyota Prius
90 day: 58.73 mpg (US)
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Quote:
Originally Posted by Phase View Post
A thick aluminum sheet that’s a few inches from the muffler in the rear should be safe right?
Hey Phase!

I did a lot of research on cat shields (since I installed two of them on Champrius recently). All of them have slits / louvres / some kind of airflow through the shield. So while I don't think there's any danger to the aluminum sheet (melting point is 1200F or somesuch), there's probably some engineering reason to make sure there is still airflow around the cat / muffler / hot stuff.

Anyhoo, it might be helpful to look at different cat shields to get an idea:
https://catshield.com/products/2004-...n-2-cat-shield
Most of them seem to have around 10%-ish of the area devoted to airflow.

Hope this helps!
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