Thread: 3.2 Turbo Build
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Coultl Coultl is online now
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Join Date: Aug 2023
Location: Boulder, CO
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Yes, the BMW end tanks are far stronger for a given material thickness. They are also more heat resistant than the PPA. The PPA should handle heat better than PA-6 but 3D print filaments have modifiers and such. I tested and it gets soft first.

I print in a heater chamber so it will be as strong as PPA can be…but for a given material thickness, it’s still far from an injection molded part.

That’s said, my design is absurdly overbuilt. All the math will likely show a factor of safely of 5, maybe closer to 10…but real world is a different ball game…

I’d need to redesign it for aluminim and it would kinda ruin the look….but it would be doable. I think total cost would be about $1k.
Old 07-01-2025, 11:18 AM
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