How much does it cost to rebuild a 454 marine engine?

Is it cheaper to rebuild an engine or replace it?

A scheduled overhaul is almost always less expensive than a new engine. Rebuilding to repair is usually cheaper than buying a new engine, too. You may save up to half of the cost of a new engine by rebuilding. However, sometimes rebuilding is not a good option.

How much does it cost to rebuild a Mercruiser?

Simple rebuild will cost you probably $500.00 – $800.00, if you take the short block to them. If you have to go the marina route it will be BIG $$$ Just remember to tell the shop it is a marine engine, OR if it is just the short block have them use brass freeze plugs and reuse the cam if they can.

How many hours will a 7.4 Mercruiser last?

While at the annapolis boat show this year, I spoke with the crusader dealer about life expectancy of gas motors, in particular the gm based 454. his opinion was , that with proper care and depending on how they are used , 3000 hrs or more is realistic.

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How much does it cost to replace an inboard motor?

If you run an inboard, expect to pay somewhere between $1,000 – $1,500. Most sailboats can do with a small 5 – 10 horsepower outboard engine without problems. These engines are easy to maintain and cheap to run.

How much does it cost to rebuild a boat engine?

Rebuilding your engine will cost around $2,500. That difference of $1,000 to $2,000 will buy a lot of gas, so consider carefully. The same-size engine in a newer four-stroke or DFI two-stroke model will add at least a $1,500 premium, so those 90 to 115 horsepower models could now run upward of $6,000.

Are Rebuilt engines as good as new?

It has been declared that rebuilt engines are better than the engines originally installed at the factory, dependable, reliable and backed by warranties. Your most reliable and cost-effective choice for engine repair is to choose to replace your current engine with a rebuilt engine.

How many hours do boat motors last?

The average marine gasoline engine runs for 1,500 hours before needing a major overhaul. The average marine diesel engine will run for more than three times that long and log an average 5,000 hours under the same conditions.

Are outboards better than Inboards?

Outboards are designed specifically for boating. Inboard/outboards are just “marinized” automobile engines stuck in a boat. Outboards provide more room in the boat because they are installed on the transom, outside the boat. … Four-stroke outboards offer much better fuel economy, less GPH, more MPG than I/O motors.

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How many horsepower is a 7.4 MerCruiser?

Mercruiser Big Block 7.4L V8 Marine Engine Product Specifications

Models 7.4L MPI 454 Mag MPI
Propshaft Horsepower (SAV1 Rating) 3101 (2752) 3851
Propshaft Kilowatts (SAV1 Rating) 2311 (2052) 2871
Displacement 454 cid (7.4 l)
Maximum rpm @ WOT3 4200-4600 rpm 4600-5000 rpm

How many hours will a 4.3 MerCruiser last?

The average life for raw water cooled engines is 1,000-1,500 hours or less depending on how often they are used and how well they have been maintained. Sitting unused is hard on them, it’s better if they are run and flushed often.