Pick a New Engine | What to Look For | Making a Blank | Removing the Old Engine | Disconnecting Systems | Mounts and Coupler | Lifting the Old Engine | Engine Beds | Shimming | Filling Holes | Flat Mounts | Landing the Engine | Exhaust System | Other Systems | Finishing Up
What to Look For in Your New Engine.
Size is the biggest factor in new engines.
If your lovely new Yanmar doesn’t fit in the space vacated by the old engine, you just wasted a lot of time and money. Always make a mockup of the new engine, ideally before you pay for it. Dimensions are always available from the manufacturer, and mockups are cheap and easy to make.
Here are some dimensions to help guide you.
Remember that even an overall smaller motor can have an oil pan that is deeper and once mounted can’t be aligned without bottoming out the pan. The only cure I know of is to slide the motor forward for the clearance but this isn’t always possible without entering the cabin.
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