Page 1 of 5 1 2 3 4 5 LastLast
Results 1 to 15 of 75

Thread: Donzi 22 Re-Power 377 Scorpion

  1. #1
    Join Date
    Jun 2015
    Posts
    34
    Rep Power
    0

    Donzi 22 Re-Power 377 Scorpion - HELP

    So... this might be long...

    Last year I bought a 1992 Classic 22. It is in 8/10 cosmetic condition, and had a freshly rebuilt Jasper 454 engine. It had a King Cobra outdrive. The lower unit started going bad right away, so I found an unused lower unit online and bought it. It was running pretty good. The guy was asking $20,000 for the boat and I ended up working him down to $13,000 at the end of the summer. So I think I got it for a good price.

    This Memorial Day weekend, I was heading back across the bay and the engine shut off and wouldn't start back up. I eventually got towed in. The mechanic took the engine out and determined that the oil hose came unplugged, the engine wasn't getting any oil, and now it's toast. Metal filings were all in the upper unit, so that's done too.

    I have cash in this boat, so I'm a bit restricted on my options. A 40th Anniversary caught my eye, but it's $35,000. I would need to sell my current one at a big loss, just to put SOME money to counter the $35,000 40th Anniversary. I would have a beautiful 40th Anniversary Donzi... but it would still have an 11 year old engine. I could lose that engine any day and I would take ANOTHER hit.

    A new Mercruiser 502 is like $25,000... and I would still need to get an outdrive and I don't want to stay with King Cobra. I'm looking at forking up some serious cash... like $30,000. I can't do that.

    After spending weeks looking around, and talking to dealers around the country, I found something that might work.

    A dealer down in Florida says he can give me a New Mercruiser Scorpion 377 with a 3 Year Manufacturer Warranty, a new Bravo 1 outdrive, a prop, a harness, and any needed re-glassing of the transom for $19,500 including install.

    I'm 30 years old, this is my first "real" boat, and I just can't justify doing much more financially. That package for $19,500 sounds like a deal. The current hull is in excellent shape and overall the boat is 8/10 cosmetically. Now I would have a brand new engine and outdrive.

    The Scorpion is pushing 350HP at the prop. I know it's not the most HP, but it's a small block and weighs about 400lbs less than a big block... PLUS I am riding this boat in the Chesapeake Bay. A calm day in the Bay is still 1 foot chop, and its often more with white caps. I think that Scorpion will get me to a top speed of around 65mph, and that's really all I want/need in those conditions. I was hitting 60 with the old engine, and it's all I wanted... even trimmed out, the boat was jumping and getting a bit squirrely. Sure, it would be nice to crank her up to 70-75mph on the RARE extra calm day, but the $$$$ difference is too much for me. Furthermore, the Scorpion is great on gas and burns regular gas.

    I'd love to have that 40th Anniversary Edition... The Yellow is SO SWEET and she looks SO clean. It would actually be cheaper than getting the setup down in Florida BUT BUT BUT I would have a boat with an 11 year old engine.

    Should I go with the Scorpion package and call it a day? I'm really liking the idea of a brand new engine and outdrive... I'm tempted by the 40th Anniversary, but I think the smart thing to do is go with the new engine and drive.

    Thanks for reading and any help!

  2. #2
    Join Date
    Jul 2004
    Posts
    2,884
    Rep Power
    17
    Why not just rebuild the 454? You already have a new lower unit on the Cobra, so the drive unit is half new.
    If your not looking to make more power, I don't see any reason you couldn't be back boating for $5k.

    Then if you decide you want to move onto another boat, you'll more than likely get all your investment back. Worst case, you'll only lose a couple grand....but you might even make a couple. If you put another $20k into the motor/drive, your getting close to having $35k into your boat and it'll be highly unlikely you'll get anywhere near that money back.

    Can't blame you for wanting yellow though.
    Why is faster never fast enough.

  3. #3
    Join Date
    May 2001
    Posts
    10,170
    Rep Power
    27
    +1

    I would Image you could get a nice crate motor re use all your tin ware maybe upgrade your exhaust and go for something like this. with exhaust and install be around 9-11k

    http://www.ebay.com/itm/500-plus-hp-...47bb3b&vxp=mtr
    When the sky is grey,look out to sea.
    When the waves are high and the light is dying,
    well raise a glass and think of me...
    When I'm home again,
    boys, I'll be buying!

    My Ride

    Come Join Us on The Queen Of American Lakes



    Contact Us

    www.lgdonziclassic.com

  4. #4
    Join Date
    Jun 2015
    Posts
    34
    Rep Power
    0
    I appreciate the replies!

    So, I'm not a mechanic, and I don't know much about engines. I can do BASIC maintenance stuff, but that's about it.

    I was just thinking that NEW technology and a new Mercruiser engine would be nice. It would be easy to get parts, and it would be less likely to have issues for a while. My local mechanic at the Bay said with the newer engine, he could get parts the next day from Mercruiser. Everything is slow moving down there so when a boat breaks, it takes the one mechanic down there weeks to get to it. I was just thinking that it would speed up any future repair process.

    ...but I see what you are saying. I could get back on the water for under $6K.

  5. #5
    Join Date
    Sep 2001
    Posts
    1,435
    Rep Power
    18
    Shark Guy where do you boat on the Cheseapeake? A few of us Donzi 22 classic guys boat on the upper cheseapeake (Northeast River, Elk River).

    I would look for a nice Mercruiser 500EFI (blue motor) on OSO and keep the king cobra drive. You could do a nice 500EFI with install/ engine compartment beefing up for most likely the same money as the 377 motor, however you will now have a 80-82 mph 22 classic.

    Good friend of mine has a 93 22 classic with a Merc. 500EFI with a king cobra drive and the boat is awesome, runs like a scalded dog. He runs alot with me on the upper cheseapeake. He has had zero issues with the king cobra drive and one minor issue with motor but other than that it is a turn key 80-82 mph boat. Also know a few guys with blue merc motors in there boats (all upgraded from stock power) and they all run strong and are basically turn key boats. I plan on upgrading my 22 496HO package also to the merc blue stuff soon....

    PM me if you need anymore info, good luck...


    Undertaker

  6. #6
    Join Date
    Jun 2015
    Posts
    34
    Rep Power
    0
    thanks for the advise undertaker... I am going to look into that. I've seen a lot of recommendations of the "blue motor" in various threads I have read through.

    I have a place at the mouth of the Rappahannock... and we have a family place in Virginia Beach. I do most of my riding around Rappahannock area where I keep the boat. My father has a 38 Scarab that's much better for the Va Beach area and rougher days.

  7. #7
    Join Date
    Jul 2001
    Posts
    14,574
    Rep Power
    32
    Having had a 22 with a small block it had advantages less worry of drives issues better economy and no question it jumped wakes in a more controllable fashion with sweet landings, but yes you will run in the mid 60's. No matter what you someone is always faster chasing that dog is a losing issue, I made several Donzi runs and had no problem keeping except I did stop a lot less at the fuel docks.
    No matter what your beliefs are "GOD BLESS AMERICA"

    Semi retired marine tech over 50 years in the biz.

  8. #8
    Join Date
    Oct 2012
    Posts
    498
    Rep Power
    0

    a 350HP small block would be great in a 18'

    Stick with a Big Block in a 22'. I run a stock 502 crate motor and they can be had from 1-800 runs new or other for about 7K. Add in new dressings and for 8-10K you'll have a reliable engine that will push your boat 70+ loaded up any day of the week...
    Reading about the Cobra drives, no need to change it out...
    Good Luck!
    Thanks, Patrick


    1996 22' Classic

  9. #9
    Join Date
    Sep 2001
    Posts
    1,435
    Rep Power
    18
    Quote Originally Posted by TheSharkGuy View Post
    thanks for the advise undertaker... I am going to look into that. I've seen a lot of recommendations of the "blue motor" in various threads I have read through.

    I have a place at the mouth of the Rappahannock... and we have a family place in Virginia Beach. I do most of my riding around Rappahannock area where I keep the boat. My father has a 38 Scarab that's much better for the Va Beach area and rougher days.

    Oh you are way down the chesepeake bay then

    Please send me a PM if you need anymore info, can also hook you up with my buddy who has the 93 22 with the 500 in it if you get serious....

    Take care....

  10. #10
    Join Date
    Jul 2004
    Posts
    2,884
    Rep Power
    17
    As you can see, there are a lot of different opinions on what to do. I'm not trying to talk you into anything...just saying what I would do. You need to do what you are comfortable with.
    Being a first boat, with only a season running it, I'd rebuild what you have. Get a quote from your mechanic on the cost. The top end, pistons, rods may be usable as is and maybe the crank just needs to be reground. If your lucky, he hones the cylinders, new rings/bearings, maybe a cam and your done.

    OR,

    Check offshoreonly.com. Check the classifieds and the Swap Shop forum for a good used 454 or 502.

    Keeping your costs to a minimum you can use it for a couple seasons to see if it truly is the boat you want, and if it's not your not going to lose a bunch of money selling it.
    If you do want the yellow boat, you have to get it running or you'll have to give it away. With a quick rebuild you'll probably get most if not all your money back. I'm basing that on the assumption that $13k purchase was a great deal...which I think it was.
    If the yellow boat has low hours I wouldn't worry about the motors age. If kept stock, the 496 is a very reliable motor. There was some boats of that era that had issues with the hull cracking but it is easy to check for and if it hasn't happened yet it is very unlikely it will happen now...or it may have had the proper repair done
    Why is faster never fast enough.

  11. #11
    Join Date
    Jan 2003
    Posts
    9,550
    Rep Power
    25
    I bought a takeout freshwater 502-415, complete, for $4500
    Charter Member - WAFNC, SBBR, KWOSG
    1955 Perfect Mate
    1986 Hornet III, 454-330-TRS
    1996 16-OB, 150 TRP Yamaha
    2001 Z235 Sport Deck, 350 MPI

    www.donzi.org


  12. #12
    Join Date
    Apr 2001
    Posts
    3,908
    Rep Power
    21
    A small block, even a Scorpion, is going to be pretty lame in a 22

    I ran a 500 EFI for ten years in my 22, before having it built up into a 540.
    Two words, carpet ride..

    Second choice, the 502MPI...

    Good luck with it.

  13. #13
    Join Date
    Jun 2015
    Posts
    34
    Rep Power
    0
    Here are pics of my current boat taken over Memorial Day Weekend.
    Attached Images Attached Images

  14. #14
    Join Date
    Oct 2012
    Posts
    498
    Rep Power
    0

    Good Looking Boat

    She looks a lot better than many red Donzis I've seen.
    Like others have told you, my advise would be to by a nice stock or close to stock BBC crate engine or take out engine and start enjoying her again...
    Thanks, Patrick


    1996 22' Classic

  15. #15
    Join Date
    Mar 2013
    Posts
    36
    Rep Power
    0

    BIG BLOCK or not to BIG BLOCK?

    Last year almost to the day I was standing in the same shoes you find yourself in. The slightly worked 454 blew in my 1995 22C which we just purchased 1 year earlier. We looked at all of our options and landed on a 502 long block from 1800runsnew. Gave us more stock horsepower AND all of the extras from the 454 bolted right up such as intake and exhaust manifolds, carburetor, etc. We did wind up replacing a few parts that made sense to do since the engine was out anyway. We looked at a stroker engine but would have needed to buy all new extras also was concerned about the change in the weight balance of the boat. Now we have over 50 hours since the new block and not any issues, the boat is truly turn key. If for nothing else get the big block just because of the awesome melody it makes. Raises the hair on the back of my neck when I fire it up.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •