How much $ to repower a diesel

[Warnerved400]

Looking at a downeast that currently has diesel power in the 200hp range. The motor is 18 years old but has low hours. If I ever had to repower I would like an addition 100hp.... What should I expect to pay to do this? And what motor would you put in yours?

 

[Powderpro]

The 5.9 Cummins is the best engine in my opinion if you are looking for about 300hp. I believe Cummins 5.9 Recons can be had from 300hp - 370hp.

 

[Shamrock Fisher]

5.9 cummins. You "may" have to increase shaft size also. Another thing to consider.

 

[lobstercatcher]

Looking at a downeast that currently has diesel power in the 200hp range. The motor is 18 years old but has low hours. If I ever had to repower I would like an addition 100hp.... What should I expect to pay to do this? And what motor would you put in yours?

All you may have to do is,,, pick a engine. Probably will have to change the gear, shaft and wheel. Hopefully the exhaust and engine cooling can adapt to what you already have or you will have to change that too. Then, wiring, and instrument panal may not plug right in. Is the fuel tank big enough to handle the extra draw of fuel with the new hp? Also the inline filters and fuel line may need to be upgraded too. As long as everything is easy access , ripping up decks and cutting up finished work may not be necessary. Also do you want to invest all the time and expense or even pay someone to swap the engine out with something other than a new or professional reman? A new engine will be a lot more than the reman . I would guess a minimum would be in the low $20k if it is pretty much a drop in. if not who knows? A new engine and gear could be a easy $30k. Then $10 just to hook it all up. Then add in demo ,fabrication ,and putting the demo back together. The nicer the work..the more it will cost.

 

[Powderpro]

I think what Lobstercatcher is trying to say is; it could be as cheap as $15,000, or it could be as expensive as $50,000. There are so many factors that effect the price, it's hard to know unless you get a quote from an experienced professional.

 

[captainlarry84]

Price

Let figure it out I have sold plenty of repowers so give us the following information:

Current power to determine resale value
shaft size
type of boat-make model year
Motor box or flush deck
current wheel size
Propeller clearance
Current transmission

 

[OLD BAY]

Looking at a downeast that currently has diesel power in the 200hp range. The motor is 18 years old but has low hours. If I ever had to repower I would like an addition 100hp.... What should I expect to pay to do this? And what motor would you put in yours?

I did the same exact thing 6 years ago. I had a 200 HP volvo, 25 years old. I put in a factory recon 300hp 5.9 mechanical Cummins. What a great engine it's been, it put that old volvo to shame. the boat is like a whole new boat. My fuel tanks, wheel and shaft were unchanged (1.5" shaft), 1.533 gear ratio. I had to get new gear, replum the exhaust and rework the wheel. All told I spent around $28k, maybe $30k in combo with some other work I had done.

Boat picked up 5kts cruise and top end (now 20-21kts at 2500, 23-24 in the corner).

 

[Warnerved400]

Thank you everyone for the responses and info, I'm considering making an offer on the samson 28' that has been for sale in Atlantic highlands. It has a 7.3 ford diesel with low hours making 200hp, I am somewhat nervous to buy it from everything I have heard about that motor, and I keeping thinking how killer of a rig she would be with a cummins or a cat in her. But there's no way I could afford to swap motors after buying that boat. I have found 7.3 turbo crate motors pushing 400hp for around $7k.... That doesn't sound to scary

 

[jerseysportfisher]

7.3 international is a good motor, better then the 6.5 gm peninsular. My advice is the same to a buddy that got an albin with a 6.5. run it until it grenades. Star power was the company that marinized them, i knew of a boat down in the keys, had the 7.3 hammer head 430hp coupled to a one off surface drive.

 

[petrel]

The marinized Ford diesel is kind of a scarce bastard engine, something to consider for the long haul.

 

[jwalka51]

you dont want a cat.

 

[jerseysportfisher]

you dont want a cat.

why not, i got 2 3208T's 320hp. Run fantastic, parts are cheap, easy to fix when it breaks ??

 

[sailor of fortune]

I want to know where cheap CAT parts are sold.

 

[F/V First Team]

At the wrecking yard pulled out of a Peterbilt...

 

[jwalka51]

Most of the commercial guys I know who have them hate them. But, I will say that the 3208 isn't a bad engine.
Especially if you are only using the vessel recreationally.
If you want to get something that is going to work all day everyday, and run for 20, maybe even 30,000 hours, then you should look for a cummins, or a John Deere, they are both good manufacturers.

 

[jerseysportfisher]

Most of the commercial guys I know who have them hate them. But, I will say that the 3208 isn't a bad engine.
Especially if you are only using the vessel recreationally.
If you want to get something that is going to work all day everyday, and run for 20, maybe even 30,000 hours, then you should look for a cummins, or a John Deere, they are both good manufacturers.

I guess the lobster boat guys down in belmar and point didn't get that memo, hell they even got some 8.2's down there with 22K hours on them

 

[petrel]

I guess the lobster boat guys down in belmar and point didn't get that memo, hell they even got some 8.2's down there with 22K hours on them

I guess the crabbers and charter boaters in Chesapeake Bay didn't get it either. The 3208 is still going strong in those parts.

 

[lobstercatcher]

Whats a new 3208 cost these days?

 

[pugsley]

Whats a new 3208 cost these days?

can't buy them new anymore, a "new" long block is about $8500

 

[lobstercatcher]

can't buy them new anymore, a "new" long block is about $8500

Sounds reasonable. Wonder what the rest will cost? More than the long block ?