An open Porsche 914 engine block with visible crankshaft, camshaft, and gears inside a metallic engine casing, resting on a workbench.

Porsche 914 & VW Type 4 Engine Building

We are Type 4 Volkswagen Engine Specialists. From complete teardowns to tuning, we can bring your Type 4 engine back to life in your 914 or in any other type of Volkswagen vehicle that came with one in it.

  • Disassembly & Evaluation

  • Engine Balancing & Machine Work

  • Customization And Or Restoration

  • Reassembly, Reinstallation & Tuning

A Porsche 914 engine with hoses and parts in a workshop setting.

Your Type 4 Performance Pros

Top view of two cylinders of a partially disassembled 914 engine block with two pistons marked with numbers and arrows.

Disassembly & Evaluation

Every engine rebuild at Martin Mid Engine, LLC begins with a meticulous disassembly and evaluation process. We don’t just tear down—we inspect every internal component for wear, damage, and tolerances, documenting each step to provide a clear picture of your engine’s health. Whether it’s a Porsche 914 or VW Type 4, our goal is to diagnose issues accurately and build a plan for a reliable, performance-driven rebuild.

Various disassembled 914 engine parts laid out on a black quilted mat, including VW Type 4 cylinder head, pistons, connecting rods, a flywheel, timing gear, and a camshaft.

Engine Balancing & Machine Work

Precision starts here. We partner with trusted machine shops that understand the unique demands of air-cooled engines. Crankshafts, rods, pistons, and flywheels are carefully balanced as a rotating assembly, ensuring smoother operation and extended engine life. Every case is cleaned, measured, align-bored (if needed), and prepped to factory or better-than-factory standards before reassembly begins.

A Porsche 914 engine on a workbench with red spark plug wires, and a Bosch fuel pump, in a garage or workshop setting.

Customization & Restoration

Whether you're restoring a numbers-matching Porsche 914 to concours standards or building a performance-tuned Type 4 motor, we tailor each engine to meet your goals. From OEM-correct finishes and hardware to modern upgrades like improved oiling systems and performance cam profiles, every detail is handled with care and expertise. Our restorations don't just look right—they run better than new.

A disassembled 914 engine on a red stand in a workshop, with engine components, tools, and storage boxes visible in the background.

Reassembly, Reinstallation, & Tuning

Reassembly is where all the precision pays off. Every engine is rebuilt to exacting standards using premium components, proper torque specs, and factory-correct procedures. Once installed, we dial in ignition timing, carburetion or fuel injection, and valve adjustments to ensure optimal performance and drivability. Whether you're breaking in a fresh stock motor or wringing out a tuned build, we make sure it starts right, runs strong, and keeps cool.