The Workshop Rebuild Engine Block Cover Set  is a complete digital file bundle designed to help you securely seal and protect your BMW R100 engine block during:

● Sandblasting

● Vapor blasting

● Surface preparation

● Powder coating & paint masking

This is not a physical product. You are purchasing a bundle of STL and STEP files that allow you to manufacture the covers yourself via 3D printing, CNC machining or CNC cutting.

What You’re Purchasing

This bundle includes:

● 1 × Read Me Document (PDF)

● 1 × Engine Cover Assembly Overview (PDF)

● 1 × O-Ring Guide (PDF)

● 18 × STL files

● 18 × STEP files

The STL and STEP files contain the same designs in different formats, ensuring compatibility with various CAD programs, slicers, and CNC workflows.

What This Set Covers

This is a complete engine block masking system, designed specifically for the BMW R100 airhead engine, however it may suit similar models from the same era. The files include:

● Oil Filter Cover

● Large Breather Cover

● Small Breather Cover

● Oil Pan Cover Set:

     ● #1 – Top Left

     ● #2 – Top Right

     ● #3 – Bottom Left

     ● #4 – Bottom Right

Pushrod Plugs

● Dipstick Plug

● Oil Pump Cover

● Cylinder Covers

● Timing Cover Set:

     ● #1 – Top Left

     ● #2 – Top Right

     ● #3 – Bottom Left

     ● #4 – Bottom Right

● Rear Oil Seal Cover

● Rear Oil Seal Inner Nut

● Rear Plastic Bolt 

Together, these components fully enclose critical openings in the engine block to prevent contamination during blasting or coating operations.

Designed For

● Engine rebuilders

● Restoration shops

● Powder coaters

● Media blasting professionals

● DIY airhead enthusiasts

Whether you 3D print them for short-term masking or machine them from more durable materials for repeated shop use, this system gives you a precise, purpose-built solution.

Important

● ✔ This is a digital download only

● ✔ No physical parts will be shipped

● ✔ Files are designed specifically for the BMW R100 engine block

● ✔ Basic knowledge of 3D printing or CNC machining is required

If you have a smaller-displacement engine and require a custom size, please contact us

Disclaimer:

Images showing the engine block and fasteners are for demonstration purposes only!