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BMW M10 DTM Airbox (Weber DCOE 40)

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3MF and STL Folder details Close
  • DTM Airbox dcom V22.stl
  • DTM Airbox dcom V26 base - unfiltered air correctors.stl
  • DTM Airbox dcom_ Halves_LARGEFILTER V25.stl
  • DTM2 Airbox Two piece v3.stl
  • DTM3 Airbox Four piece MK4 v12.3mf
  • DTM3 Airbox Four piece V7.3mf
  • DTM3 Airbox Four piece v12.stl
  • DTM3 Airbox Two piece v1.stl
  • DTM3 Filter funnel square V14.stl
  • EXPERIMENTAL DTM FRONT ENTRANCE V25.stl
  • EXPERIMENTAL DTM FRONTLOWMOUNT_MIRRORED V25.stl
  • EXPERIMENTAL DTM FRONTLOWMOUNT_MIRRORED_angled V25.stl
  • EXPERIMENTAL DTM LARGER VOLUME 2.stl
  • EXPERIMENTAL DTM LARGER VOLUME 2_FUNNEL.stl
  • EXPERIMENTAL DTM LARGER VOLUME.stl
  • EXPERIMENTAL DTM LOWFRONTMOUNT_MIRRORED_angled_C V25.stl
  • EXPERIMENTAL DTM SMALLER VOLUME.stl
  • EXPERIMENTAL DTM_ FRONTLOWMOUNT_MIRRORED_angled_B V25.stl
  • dtm airbox dcom_ LARGEFILTER V23.3mf

Learn more about the formats
Publication date 2024-01-29 at 20:20
Design number 1747793
davidkerny

davidkerny

3D printer file info

3D model description

Make your BMW M10 roar like M3 S14 DTM!

Fits the Weber DCOE / DCOM 40 carburetors
spaced as on the chinese adaptor for the BMW M10 engine.
Apart from some air filtering capabilities, it gives your car a BMW E30 M3 DTM-like sound.

Fits the BMW E21 constrained engine bay: clears the battery, oil dip stick, brake fluid reservoir and brake booster hose.
Fitting another existing filterbox designs is otherwise a hassle on the E21 due to its spatial limitations.

The DTM V26 version is divided in two parts which slide onto each other. Good for experiments with the air inlet size and filters. The two parts can be then joined together using two M3x30 Allen bolts.
The main DTM version fits 4" intake hose / filter.

The DTM2 version can be printed in parts and bolted together using M3x20 screws. It has 90mm intake opening.

The DTM3 is the final version I ended up using. The intake opening fits a 90mm ID foam air filter.
It is also available in quartered up version to be printable on smaller volume printers such as Prusa MK3 / MK4. The pieces are then bolted together using M3x14 screws.

The printable files contain also some experimental versions of the same manifold such as the extremely noisy one with the large filter opening. Other experimental variants include the one with smaller and larger volumes, one with the opening pointing above the alternator or straight to the front (where the battery usually is).

Weber DCOE to BMW M10 adaptor:
https://cults3d.com/en/3d-model/tool/dual-weber-dcoe-to-bmw-m10-intake-manifold-adapter

3D printing settings

Two-piece versions can be printed on Prusa XL. The enclosed 3MF file is sliced for the XL.

The four piece version can be printed on Prusa MK3 / MK4 or another similarly-sized 3D printer. See the enclosed 3MF file sliced for Prusa MK4.

The models can be split in parts using the Split to Objects function in Prusa Slicer.

Requires custom supports in order to print correctly.

Should be printed from PA nylon to be gas-resistent.
When printed from PETG, it does not hold long-term.

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