A vehicle engine bolted to a frame becomes stationary power for generators, pumps, mills and saws, and a vehicle alternator or starter motor can be put to work on its own. Choose the smallest engine that does the job, run it only outdoors because its exhaust carries carbon monoxide, and give it a working cooling system and a way to control its speed before it is started with no vehicle to load it.
Engines turn fuel into shaft power, and most of the engines in a town are in vehicles that will not drive again. The question is how much of the vehicle has to come with the engine to make it run.
Most Stationary Work Needs Far Less Engine Than A Car Has
The parent article notes that a 4-cylinder engine from a compact car produces 50-100 HP, far more than most stationary jobs need, and that a single-cylinder engine from a motorcycle, lawn tractor or generator is more fuel-efficient for light duty. Fuel is the limit: a bigger engine burns more when it is only lightly loaded.
Three routes follow from the parts you can get:
- Whole engine on a frame: see Converting a Vehicle Engine to Stationary Use.
- Alternator as a generator, driven by the engine or by wind, water or a pedal: see Alternator as Generator.
- Starter motor as a high-torque motor: see Starter Motor Applications.
What You Need
- An engine with a known running history, ideally one that was running when the vehicle was parked.
- Lifting gear: an engine hoist or chain fall and stands.
- A sturdy frame and mounting site.
- Fuel supply and storage; see Fuel Siphoning & Storage.
- Hand tools, eye protection and gloves.
Method: Choose, Remove, Mount, Prove
Step 1: Match engine to job. Estimate the power the job needs; pick an engine that is not far above it.
Step 2: Check the engine. Turn it over by hand. It should rotate smoothly. Check oil and coolant. Fuel quality matters; see Gasoline.
Step 3: Remove it safely, battery negative first, fuel lines relieved, and the engine supported throughout.
Step 4: Mount and connect. Frame, cooling, exhaust, fuel and output shaft, as in the stationary-engine page.
Step 5: Prove it under supervision, outdoors, with no one in line with belts or shafts, before relying on it.
Step 6: Fuel it for the long term. Gasoline spoils; consider alternatives such as Wood Gas Vehicles or biodiesel for diesel engines, see Biodiesel Production.
Common Mistakes
- Using a car engine for a job a small engine could do. It burns fuel you cannot replace.
- Running without a governor or throttle control. Free-running engines can over-speed.
- Mounting on a light frame. Vibration shakes it apart.
- Running in a shed to keep it dry. Exhaust kills.
Safety
Exhaust gas, rotating shafts and runaway speed
Engine exhaust contains carbon monoxide, which is colourless, odourless and deadly; run engines outdoors only. See CO Risk. Belts, pulleys and shafts entangle clothing and hair, so guard them. Without a vehicle to load it, an engine can run away to damaging speed, so give it a throttle you can reach. Never refuel a hot or running engine.
What’s Next
- Learn next: Converting a Vehicle Engine to Stationary Use — the full conversion
- Combine with: Alternator as Generator — electricity from the shaft