WELCOME TO RIVER DAVES PLACE

Why are boat engines soooo expensive?!

Boschma

Wish I was at the River
Joined
Oct 25, 2009
Messages
5,806
Reaction score
3,421
I've always wondered why boat engines are so expensive. I understand they have good parts and the drives are expensive...but $30-40k for 900hp with a stout drive! REALLY?!

Just seems like you could have a wicked engine built for a hot rod or muscle car with equal power for close to the $10-12k range.

Is it just a boat thing....they charge alot because they can? Or does it really cost that to build them?
 

ChumpChange

Commercial Banker
Joined
Dec 19, 2007
Messages
10,300
Reaction score
12,462
Drive your car all the way to Vegas in 2nd gear and see how it holds up. :cool
 

Boschma

Wish I was at the River
Joined
Oct 25, 2009
Messages
5,806
Reaction score
3,421
I understand that there is more load on the engine.....but does it really cost that much more money to build?
 

djunkie

Broke mo fo
Joined
Sep 24, 2007
Messages
32,821
Reaction score
4,275
The rocker arm setup on my boat engine cost more then what I spent rebuilding the sbc in my truck. :rolleyes:
 

Boschma

Wish I was at the River
Joined
Oct 25, 2009
Messages
5,806
Reaction score
3,421
Not to mention that 900+hp engine probably won't last very long, and comes with a 6 month warranty, maybe??;)

Ya! You'd think for the big money they charge you'd hope to get at least a 150 hour warranty. How many hours with normal use could a guy expect to get out of those big power engines? How often should they be freshened?
 

ChevelleSB406

Well-Known Member
Joined
Apr 2, 2012
Messages
4,685
Reaction score
4,895
I always used to think the same thing, but the ways I can make power in a car engine aren't as open in a boat application, aggressive cam profiles for example can cause water reversion, and where t he power is made in te power band is quite different, but mainly the load plays the biggest role from my novice understanding. My 427 abc makes pretty big power up top but would not even get there if it was trying to push a boat through water. Oh, and a bit of "because they can." But boat application are so much cooler in forced induction just because of the infinite inter cooler that is the body of water. That makes them more fun to build :)
 

Hammer

Well-Known Member
Joined
Apr 17, 2010
Messages
22,263
Reaction score
14,015
I've always wondered why boat engines are so expensive. I understand they have good parts and the drives are expensive...but $30-40k for 900hp with a stout drive! REALLY?!

Just seems like you could have a wicked engine built for a hot rod or muscle car with equal power for close to the $10-12k range.

Is it just a boat thing....they charge alot because they can? Or does it really cost that to build them?

Bow tie block,dart etc... Tall decks aren't cheap for starters figure 2500, not including the rotating assembly plus having everything balanced... A good set of heads are 1500 +/- bare, by the time you put valves ,springs ,guides etc your probably be up around 3500 by the time you have them assembled. Haven't even gotten into the intake system yet and we are already at .....

I built a blown 540 myself and even getting deals here and there I was over 20k easy by the time the engine was finished.....
 
Last edited:

Vmjtc3

Banned
Joined
Jun 19, 2009
Messages
4,539
Reaction score
337
I know Teague and Mercury have some limited warranties on their high HP engines, but idk exactly what that warranty covers? It just seems like with any high HP blower engine its only a matter of time before something goes wrong, right?:thumbsup

From what I gather, the Merc racing engines now a days are pretty solid:thumbsup
 

Tank

Well-Known Member
Joined
Jul 12, 2008
Messages
20,812
Reaction score
49,173
You're also paying a hefty price for the years and years of R&D. The 1350 turbo motors where in R&D for 7+ years before released. Not to mention the market isn't there to get mass units out. So the price goes way up.

150k for 1 merc 1350 w/M8 drive.
 

Skinny Tire AH

This ain't all folks! Skater368
Joined
Oct 30, 2010
Messages
10,258
Reaction score
23,711
I know Teague and Mercury have some limited warranties on their high HP engines, but idk exactly what that warranty covers? It just seems like with any high HP blower engine its only a matter of time before something goes wrong, right?:thumbsup

Wrong ;)

PR, I have a Gen 4 502 that is now 510 inches with a 10:71 little field on top and a Lee industries intercooler. It has been in three boats now. A 21 Daytona, my 250 Daytona, now my 21 Daytona copy :eek. It has been "freshened up" four times in 15 years. Never once a catastrophic failure. It makes 1100 HP. I drive the piss out of it, but take extremely good care of it. Larry Peto builds engines that can take season after season of hard use, a couple valve adjustments a years and it's all good. Good parts, good fuel and common sense.

Steve
 

cave

Well-Known Member
Joined
Dec 22, 2007
Messages
3,049
Reaction score
21
Steve, I lack that common sense part.lol

The cost of my head work alone, plus the stud girdles, enconel valves, triple rate springs match to a motion pro 3/4 race cam :) Dam that's near 3k without the heads. Add in the bottom end and dam I could of bought a small house here in AZ. Dammit. lol
 

Skinny Tire AH

This ain't all folks! Skater368
Joined
Oct 30, 2010
Messages
10,258
Reaction score
23,711
PR,

Also, sitting here thinking about this, I think a contributing factor to premature engine failure, wear and poor reliability in general is, high quality components cost significantly more than just average stuff. If you push an engine hard with marginal stuff, it's lifespan will be proportionally shorter.

I think there is always temptation to just build an engine with "acceptable parts" rather than truly exceptional parts and assembly methods of the big power experts, Teague, Peto, Boost etc.

Conversely if you basically "overbuild" your power and ask less of it than it is capable of, it will live commensurately longer and give you many trouble free years. My power could handle much more boost (with better fuel) and make 1200-1300 HP.

Steve
 

Ziggy

SlumLord
Joined
Sep 20, 2007
Messages
39,958
Reaction score
45,284
B O A T
Break Out Another Thousand:)

From my POS T-mobile thingie
 

Skinny Tire AH

This ain't all folks! Skater368
Joined
Oct 30, 2010
Messages
10,258
Reaction score
23,711
Steve, I lack that common sense part.lol

The cost of my head work alone, plus the stud girdles, enconel valves, triple rate springs match to a motion pro 3/4 race cam :) Dam that's near 3k without the heads. Add in the bottom end and dam I could of bought a small house here in AZ. Dammit. lol

I hear ya Cave, This shit is nuts expensive, but buying less expensive parts and just turning a blower faster is a recipe to a short summer. The pain is temporary.
 

DaveH

Well-Known Member
Joined
Sep 9, 2008
Messages
2,754
Reaction score
3,943
the single biggest problem is most engines are built custom. even merc, who probably sells thousands of engines per year, thats PEANUTS compared to what Ford or GM crank out on an assembly line using mass produced parts.

even the big names in the marine industry who build "package" engine i doubt have 5-10 engine sitting around ready to go.

and obviously, marine engines get worked way harder then a production line engine, so premium parts are used, driving up the price very quickly.

people complain about the cost, but few people probably really know how much effort goes into building a premium engine. and its not just the cost of the parts, the overhead to support all the hi dollar machines, dyno's, shop space etc is staggering.

for as much as these motors cost, i bet the margin the builders make is actually quite small.
 

Kylemenz1

Well-Known Member
Joined
Sep 10, 2009
Messages
3,292
Reaction score
1,288
And because no body "needs" a high horse power boat motor.


Sent from my iPhone
 

Cajun

Well-Known Member
Joined
Jul 28, 2012
Messages
2,266
Reaction score
147
I hear ya Cave, This shit is nuts expensive, but buying less expensive parts and just turning a blower faster is a recipe to a short summer. The pain is temporary.

And this is what kills me. A pulley swap and I go from 600hp to 860, but it's the fuel requirement that keeps my shit straight and on pump gas.
 

Outlaw

Polishing MOFO
Joined
Dec 20, 2007
Messages
3,256
Reaction score
61
I've always wondered why boat engines are so expensive. I understand they have good parts and the drives are expensive...but $30-40k for 900hp with a stout drive! REALLY?!

Just seems like you could have a wicked engine built for a hot rod or muscle car with equal power for close to the $10-12k range.

Is it just a boat thing....they charge alot because they can? Or does it really cost that to build them?

You have a great source for a marine engine right in your back yard.

Next time your in Lubbock
Go by and talk with Tracy @ Sunset Racecraft They are just off the loop
On the east side of town

http://www.sunsetracecraft.com/

Tracy has a Eliminator Daytona so he
Knows how to build a boat engine
And his engines are the ones to have
If you drag race.

They did all the machine work on mine
Plus assembled the rotating assembly
 

TPC

Wrenching Dad
Joined
Sep 20, 2007
Messages
31,225
Reaction score
24,376
The upgrade from the 383 to the 8.2 was a $12.500 per motor hit when we ordered our latest boat.
Danny Donahue told me stfu,,, that's about par.

Damn,,, I miss Danny.

I priced 1000 hp Mercs with the Super Bravo out drive at $100k, zero warranty.

Ya gotta pay to play.
 

Hullbilly

Well-Known Member
Joined
Mar 20, 2013
Messages
7,719
Reaction score
12,661
Wrong ;)

PR, I have a Gen 4 502 that is now 510 inches with a 10:71 little field on top and a Lee industries intercooler. It has been in three boats now. A 21 Daytona, my 250 Daytona, now my 21 Daytona copy :eek. It has been "freshened up" four times in 15 years. Never once a catastrophic failure. It makes 1100 HP. I drive the piss out of it, but take extremely good care of it. Larry Peto builds engines that can take season after season of hard use, a couple valve adjustments a years and it's all good. Good parts, good fuel and common sense.

Steve

I agree, too many people fall for the, " oh the mechanic said I have 250 hours on it, time for a full rebuild." If you build it right, and maintain it years of service is completely do-able. Buy cheap and treat it like a wondertard better plan on lots of repair bills.
 

f_inscreenname

Active Member
Joined
Jul 19, 2011
Messages
39
Reaction score
5
I'm not doing anything close to you guys are but the numbers add up quick and if you keep track of the cost of every nut, bolt, fitting, hose clamp, etc, etc even a cheap motor adds up quick.
 

pronstar

President, Dallas Chapter
Joined
Aug 5, 2009
Messages
34,650
Reaction score
41,427
Supply and demand.
If we all drove boats instead of cars, prices would change accordingly.


2 Tapatalk 1 Cup
 
Top