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Test Run an engine out of the car questions 444-544

I've done it with water-cooled engines, so I just needed the addition of a garden hose feeding the cooling jacket. I was doing an MG Midget/AH Sprite engine, and a 4-cyl marine engine. They both had nice flat oil pans, so I just set them on a board and didn't bother tying them down. It was fine.

However, strapping it to a good base (like a pallet or something) with some ratchet straps, rope, or whatever would not be a bad idea. Also, I think I have done it hanging on an engine hoist (with the addition of a tether rope).

With jumper cables, put the pos (assuming neg ground system) cable to the lug on the starter that normally goes to the battery. Some black tape on that connection may be a good idea. Put the negative to a good ground on the engine.

Run some small wires from the batt to the coil to energize that. Alligator clips would be ideal so that they don’t stay on when you don’t need them. Then, if your starter has the small connection for the exciter wire, just jump from that to the hot lug on the starter to crank it. If your starter uses a heavy remote solenoid, you may have to incorporate that or else use something heavier than small wire between the starter lugs.

Be careful with that remote fuel source. Consider running it just on a carb full. That will automatically limit the run time if something goes wrong. You don't want to end up with a big gasoline leak, a loose battery, and a loose engine.

Also, you didn’t say what kind of engine this is. If it’s an aircraft engine, you’d best post back and fess up because there are other considerations to be made.

Charley






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