stern drive diesel questions

woodrat

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Jul 27, 2004
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I am picking up a 24' bare plywood hull later this month and i will be working on finishing it out next winter. I want to power it with a diesel engine and a stern drive and right now I am leaning towards volvo. What I want though is an something older, so that I can afford it and so that it has mechanical injection rather than electronic common rail like the new ones do. Unfortunately, I can't seem to find the info about what to look for. the volvo engine site is great for new volvo info. Where can I can info on older mechanical injection volvos? I am looking for about 120-150 hp. Other brands besides volvo would be fine too.

Thanks!
 

ted655

Petty Officer 1st Class
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Oct 21, 2003
Messages
252
Re: stern drive diesel questions

Tou have to "Google" your butt off. Think ourside the box. Try words like used, salvage, rebuild, repower, takeout eyc. Haunt Ebay. Craigs list. Shop used boats. It's a job but there out there.
I know you're trying to geton the water (me too) but don't be penny wise & pound foolish' Old Volvo parts are few & expensive. Befor you buy, take a day & rebuild various parts online, as if your's was really broke. You'll see that the totals will bring you closer to a "nearly new" (such as a repower take out), than you thought.
I deleated my bookmarks but I found a few places like you are lookingfor. After figuring all the angles I went with an outboard instead of a stern drive. But HEY, thats just my opinion.
 

woodrat

Ensign
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Re: stern drive diesel questions

I want it to be diesel because I can make bio diesel and I also get salvaged heating oil sometimes for free. So for me, I can figure in all that fuel that I wouldn't have to buy into the equation as well. I know that if I went with an outboard, I would still be spending a big chunk of money to buy it and then spending hundreds a year on fuel for it too.
 

woodrat

Ensign
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Re: stern drive diesel questions

Are there any other engine/outdrive setups comparable to the Volvo? the only mercruiser diesel I have found is the newer, common rail cummins.

thanks for the link Don S, that is what I was looking for. Just shopping around on CL I did find a takeout in Hawaii for $8500. too far away for me, but it was good to see that I could possibly do this for well under $10k.
 

Don S

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Re: stern drive diesel questions

I'm just going to mention this since you haven't bought anything yet. While diesels are cheaper on fuel than gas, they are also about triple on maintenance and repair costs. For a 24' plywood boat, I think you might be going to an awful lot of trouble for what you are going to end up with.
You can buy YEARS of gas for the price of repairs.
Mercruisers older diesels were Junk..... The Yanmars are way more expensive for repairs than Volvo ever though about being. You haven't lived till you spent over 100 bucks for a fuel filter for a 4 cylinder Yanmar.
Just thought I would mention it.
 

Reel Poor

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Re: stern drive diesel questions

I don't know anything about them but what about some of the Perkins or Hino diesels?
 

Don S

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Re: stern drive diesel questions

They are good engines, just not adapted to outdrives. I'm sure it could be done, but not inexpensively.....
 

woodrat

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Re: stern drive diesel questions

fair enough, and in the end, I may end up going with an outboard anyway, because it would be easier and faster to install, but I am pretty comfortable with working on diesels already. I have had a lot of diesel VWs and my truck is an older cummins/dodge. And I have to point out that yamaha parts aren't exactly cheap either. I have spent almost $5 EACH for spark plugs and I don't even want to think about what i will spending someday when some electronic control box burns out on my P60, or how screwed I will be if I am out on the water somewhere. I do remember what electrical stuff for my yamaha motorbikes used to cost. several hundred dollars for a little black box which the bike won't run without. That's why I am wanting to stay away from the computer controlled diesels as well as computer controlled gas engines.

And there are no yamaha dealers anywhere near me either, so when I have needed parts, they always have to be special ordered in seattle and mailed to me.

As far as gas costs goes, last summer I spent over $300 in fuel for six days of ocean fishing in my mercruiser boat. I probably spent closer to $1000 in that boat for the year, and that was a year that I wasn't out that much. I figure a decent mechanically injected Volvo will probably last for a pretty long time if cared for properly. Let's say that I can get 10 years of use out of it, well if I can run free fuel for that long, that is $10k at today's pump prices, let alone tomorrow's. Even if I spend $300/year on maintenence, which is an awful lot more than my gas engines have consumed, I'm still ahead with a diesel. And then there is the flammability issue as well. I'd rather have 50 gallons of diesel on board than gasoline.

but thanks for your input. the reason I come to iboats is to get feedback from people more experienced than I am.
 

woodrat

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Re: stern drive diesel questions

yeah, I have looked at perkins engines, there are a lot of them around for reasonably cheap, but not attached to stern drives and I would rather have the increased handling that I would get from a stern drive as opposed to a shaft.
 

Don S

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Re: stern drive diesel questions

Not Yamaha, Yanmar......... Big difference.
 

woodrat

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Re: stern drive diesel questions

yeah, i got it. Yamaha is what I have on one of my boats and the P60 and the four stroke kicker both have been pretty reliable. I just hate buying those little black boxes....

As if on cue, when I got ready to head back from fishing tonight, the 60 started right up, but for reasons unknown, the engine status panel that shows the tach, trim angle and warning lights failed to come on. I have no idea what caused that, other than my post here griping about how expensive and hard to get yamaha parts are ... :rolleyes:

the other power option I am considering for the wooden boat is a yamaha 115 four stroke. It would be faster and easier to install, but still.... i do like diesels and the money saved by burning free fuel would buy a lot of $100 filters. And i have never really considered a yanmar, only Volvo and cummins/merc. If only I could get a cummins 4BT with a sterndrive!
 

Don S

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Re: stern drive diesel questions

If only I could get a cummins 4BT with a sterndrive!

You can, you just need LOTS of money........ :eek:
 

woodrat

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Jul 27, 2004
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Re: stern drive diesel questions

You can, you just need LOTS of money........ :eek:
well, it would last pretty much forever.

My dodge/cummins truck has 267k miles on it and that motor just purrs. The rest of the truck is not keeping up though...

that cummins 12 valve B engine is so simple and even in an 8000# truck, I sitll get a minimum of 15 mpg and as high as 18 regularly. I do see those 6 BTs for sale pretty regularly on craigslist, but they are never sterndrive set ups, always shaft.

What I plan on doing with this 24' boat is putting in a short cuddy cabin and hardtop, and a selfbailing deck and making it into a sturdy and long lasting sport fisher and workboat. here's the design of the hull I am getting. it is a little bit like a tolman skiff.

http://glen-l.com/designs/hankinson/cuddysport.html

it is built on a jig with only one strucutal frame and the hull is three layers of plywood laminated together. It is heavier than the plans would have originally built.

I don't care about going super fast, if I could get 20 kts top speed out of it that would be plenty. My Valco with the 60 will make 30kts absolute tops, but my Bell Boy is 23 kts max, and in the ocean and rough river chop, i almost never get past about 16 anyway, at least comfortably.
 

ted655

Petty Officer 1st Class
Joined
Oct 21, 2003
Messages
252
Re: stern drive diesel questions

This boats for ocean fishing? Why not a diesel inboard? There are hundreds of small diesels for sale, everywhere. Cheap. There is NO better setup for economy, longevity, reliability and rebuildability than the inboard diesel/shaft.
I live in shallow waters, so I HAVE to use a OB on a jackplate. Our houseboat is a Volvo diesel sterndrive for the same reason. Man, if I could run in deeper waters, I would'nt be caught dead with either type. I'd have an inboard in a heartbeat.
I tjink it's great about your used fuel oil access. I question the savings on making bio diesel. Depending, but by the time you buy the additives to seperate the parrifn & other ubdesirables, collect the base product & so forth, you aren't even close to cheap bio diesel. If it's a green "thing" with you, then I dig that too.
It's good that you savy duesels, but you still have parts to buy. I know I shudder everytime the HB make a wierd sound. I must admit, so far so good but the engine is a 1984 & my day of reconing is near I fear.
I once had a link of some marina in upstate NY. that did repower work. I found a dandy little Volvo diesel SD there once. Ya just have to turn over a lot of stones. Good luck.
 

woodrat

Ensign
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Jul 27, 2004
Messages
949
Re: stern drive diesel questions

Even with methanol prices up, I should be able to produce bio for about 75 cents a gallon, plus my time. once the reactor is set up, the time involved is minimal. And right now, pump diesel is $3.05 here. So even if bio costs me all of $2.00 gallon with my time figured in, it is still way ahead of the pump. And the free heating oil is even better, although that has a lot of time involved as well.

the reason I am wanting a stern drive instead of a shaft is mainly manuverability. this boat will get trailered and launched at boat ramps, so being able to turn quickly in tight places will be a plus. And if it were a straight inboard, the motor would end up living pretty far forward and I can see it being awkward and in the way. I am still deciding though. The inboard set ups are definitely cheaper and simpler.
 
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