Bohlen Metalworks LLC

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Bohlen Metalworks LLC Welding, Fabrication, and Design

Air cooled 911 had some exhaust flow restrictions. Especially with its built 3.4 flat 6. These secondary pipes utilize t...
09/01/2026

Air cooled 911 had some exhaust flow restrictions. Especially with its built 3.4 flat 6. These secondary pipes utilize the oem gaskets for the gt3rs muffler. Adapted with some flanges I custom made. This is a drivers car so a valved setup will be adapted later on to utilize the secondary chamber of the muffler. (Last 2 pictures show the .5” flow restrictions from before)

12/23/2025

I love doing modifications like this, reminds me of old school hot rodding. If you have a that needs chassis reinforcements done right, send me a dm

It was a good exercise for me building these headers and figuring out the right angles, really happy with how they turne...
12/16/2025

It was a good exercise for me building these headers and figuring out the right angles, really happy with how they turned out!

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36 Center Drive, Ste 4
Gilberts, IL
60136

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Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

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