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Rebuilding your current engine |
Pros |
Cons |
Minimal amount of work and cost |
Durability not as good as original engine |
You know your engine |
No improvement in fuel consumption |
No need to worry about emissions |
Warranty only on new components |
| |
Replacing your current engine with a remanufactured engine |
Pros |
Cons |
You know your engine |
No improvement in fuel consumption |
No need to worry about vessel systems |
No potential for vessel speed increase |
Durability similar to original engine |
|
Some manufacturers provide longer-term warranties |
No need to worry about emissions |
| |
Replacing your current engine with a new engine |
Pros |
Cons |
Improved reliability and durability |
Vessel systems need to be reviewed |
Long-term warranties |
|
Improved fuel consumption |
Reduced smoke and noise |
Potential for reducing operating costs |
Potential for increased vessel speed |
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Items to Consider Before Repowering your Vessel |
|
Know your current vessel performance |
Fuel and oil consumption |
- Establish your performance baseline
|
Use the load factor and duty cycle to figure out the potential fuel consumption savings. You might be able to repay for the repower
in a few years. |
- Define your duty cycle and load factor
|
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Determine if additional power will
increase the vessel speed |
Emissions
Emission rules are in place in the United States.
New rules will apply in 2012 that might require
additional exhaust aftertreatment for your vessel.
International rule applies if you travel to one of the countries that have ratified MARPOL 73/78
Annex VI. Review requirements with qualified personnel. |
- How much power is required to obtain the speed you want?
|
- Does the vessel have room for a larger propeller or shaft?
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The answers to these questions aren’t simple, so talk to an
experienced professional! |
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Review vessel systems |
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- Make physical comparisons to see if the new engine will fit
|
- Review the mounting structure and make sure it will support the
engine and power
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- Is the ventilation system sufficient for the air flows?
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- Is the cooling system sufficient for flows and heat rejection?
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- Is the exhaust system large enough for the exhaust flow?
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- Will the exhaust system handle the exhaust temperatures?
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- Will the fuel system provide enough fuel to the engine?
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- Do you need to change the fuel filters to meet requirements
of the engine?
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- Are the batteries large enough to start the engine?
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- Is the charging system large enough to keep the batteries
charged?
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