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TOPIC: Need engine

Need engine 14 Apr 2017 02:51 #1

  • Devon215
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I have a 1987 Bayliner 2750 sunbridge with no motor is the anywhere I can get 1 or can I use a chevy 350 motor need help asap would love to get up and run soon.

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Need engine 14 Apr 2017 03:27 #2

  • Pcpete
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There are several places to get motors, but what drive do you have? That makes a difference because the exhaust manifolds connect differently and water pumps are in different locations. How much motor, as in completeness do you need? Do you need the entire "drop in" package or just a long block with tin? I guessing that boat came with a Volvo, so what's left in the boat? Is there a transom shield and drive or just some wires and a keyhole in the transom.
If you are going from nothing there, and your wallet can stand it, go new. Get it with full closed cooling and remote oil filter. That is going to provide, IMO, the most reliable solution. If you have some parts of the old power package, it's picture time so we can see what's missing and would need to be added to a "bobtail" motor to complete the installation. There are some very good production rebuilders of marine engines out there, and others with super good prices to stay way away from. Others will chime in with sources. The last repower I did was in 2001 and I was able to buy my packages from a contact in my yacht club.
Get out that cel phone and get us some pictures! Times a'wasting. :woohoo:

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P/C Pete
Edmonds Yacht Club (Commodore 1993)
1988 3818 "GLAUBEN"
1980 Encounter Sunbridge "Misty Blue" (Sold)
MMSI 367770440
1972 Chevrolet Nova Frame off Resto-mod in the garage
Boating on the Salish Sea since 1948

Need engine 14 Apr 2017 13:09 #3

  • Download_Complete
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Devon215 wrote: I have a 1987 Bayliner 2750 sunbridge with no motor is the anywhere I can get 1 or can I use a chevy 350 motor need help asap would love to get up and run soon.


We need a budget, and some requirements. There's the "right" way to do this, and there's the "half-ass" way to do this that most people try to do (get a junkyard truck engine and convert it).

The right way to do this is about 5 grand, and you call MichiganMotorz and order up a 315 hp small block 5.7.

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Matt Train
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Chicagoland, IL

Need engine 14 Apr 2017 16:43 #4

  • builderdude
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If going the right way do as download says and call MM, but ask for the 6.2 (383) ;)

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Dave
Edmonds, WA
"THE FIX"
'93 2556 5.7 Bravo II 2.0:1 18 1/4x19 P
.030 over-Vortec top end-part closed cooled
***The rebuild of my 2556***
www.baylinerownersclub.org/index.php/for...ansom-repair-my-2556

Need engine 14 Apr 2017 17:18 #5

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1987?
Alpha Drive.
383 is too hot for it

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Boatless at this time

A veteran is someone who, at one point in their life, wrote a blank check made payable to "The United States of America," for an amount of "up to and including their life."

Need engine 14 Apr 2017 17:27 #6

  • Ruffryder
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OMC Cobra unless she was repowered...
Still too hot

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Joon, Kathy, Jaden & Tristan
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91 Fourwinns 205
Longbranch WA
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Last Edit: by Ruffryder.

Need engine 14 Apr 2017 17:35 #7

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Didn't think of that, just thinking its a 27 foot cruiser with a who knows what if any drive??
Devon....you still with us dude? B)

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Dave
Edmonds, WA
"THE FIX"
'93 2556 5.7 Bravo II 2.0:1 18 1/4x19 P
.030 over-Vortec top end-part closed cooled
***The rebuild of my 2556***
www.baylinerownersclub.org/index.php/for...ansom-repair-my-2556

Need engine 14 Apr 2017 17:51 #8

  • Ruffryder
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Anything more than 300 horses, OMC used a King Cobra.
I've seen a very rare earlier production 87 2750 with a VP,
OP will have an OMC set up most likely.
Mercruiser's new 357 4V Alpha is rated @275 HP, 357 4V Bravo @325 HP,
So Merc's engineers are limiting @275 for an Alpha.
Of course, 357 Bravo or 383 w/ Bravo 3 would be ultimate, but that is a $+20,000 package on a 87 boat.
True Vortec 5.7 290~300 HP would do OK.

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Joon, Kathy, Jaden & Tristan
93 3058
92 2855
91 Fourwinns 205
Longbranch WA
Life is Good
Last Edit: by Ruffryder.

Need engine 14 Apr 2017 18:04 #9

  • Devon215
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I'm here just found out boat have no out drive or motor? I would love to do a 350 chevy bullock need help. It's a nice boat really clean it for the family guys. Feel free to email me for pictures thanks.

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Need engine 14 Apr 2017 18:09 #10

  • Ruffryder
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Hmm Email you? :whistle:
A regular 350 Chevy block on her would be underpowered...

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Joon, Kathy, Jaden & Tristan
93 3058
92 2855
91 Fourwinns 205
Longbranch WA
Life is Good

Need engine 14 Apr 2017 18:21 #11

  • Devon215
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Yes email me please

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Need engine 14 Apr 2017 18:22 #12

  • Devon215
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Yes email me please it's faster This email address is being protected from spambots. You need JavaScript enabled to view it.

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Need engine 14 Apr 2017 18:45 #13

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So the whole package. I say 383 + Bravo ;) make sure your fuel tank is good as well as transom stringers etc. look hard for any structural issues before you spend a dime!

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Dave
Edmonds, WA
"THE FIX"
'93 2556 5.7 Bravo II 2.0:1 18 1/4x19 P
.030 over-Vortec top end-part closed cooled
***The rebuild of my 2556***
www.baylinerownersclub.org/index.php/for...ansom-repair-my-2556

Need engine 14 Apr 2017 19:59 #14

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Devon215 wrote: Yes email me please it's faster This email address is being protected from spambots. You need JavaScript enabled to view it.


Dude you are on a discussion forum. Email defeats the purpose.

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Matt Train
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Need engine 15 Apr 2017 03:32 #15

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Devon215 wrote: I'm here just found out boat have no out drive or motor? I would love to do a 350 chevy bullock need help. It's a nice boat really clean it for the family guys. Feel free to email me for pictures thanks.


Sounds like the motor and drive were sold because the stringers and or transom are rotted.

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1990 2556
7.4 mercruiser Bravo 2 drive
Marysville Wa

Need engine 15 Apr 2017 06:38 #16

  • Pcpete
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Devon, posting pictures here is so easy, I can do it. Under the box where you write your post there's a box for attachment. When you click on the add file box, a box will open telling you the types of photo files that can be attached click on that then it will let you add your file. That will be a thumbnail. If you want to insert it in the post, click insert.
One of my closest friends bought a 2750 new in 1985 with a 350 and a 280 drive. It topped 40 mph loaded for a two week vacation with the Admiral and two daughters.
Make sure the stringers and transom reinforcement is good. If you are unsure, it would be well worth it to hire a surveyor to look it over. If you have to do some repair to any of it, it's just dirty work and there are plenty of guys here to guide you through the process. The keyhole for a mercruiser is really close to a Volvo. If it had a OMC, the transom work is about the same as replacing the reinforcement. Bottom line is, it's all workable and you are going to have a great boat for your family.
I was looking to see where you are and found that there's an original post from you about this boat in 2011. Is that an error or has it been sitting and waiting for that long? Just curious, the answers are still the same. Where are you? There may be a member nearby who can meet with you to provide some quick guidance so you can develop a plan to meet you vision.

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P/C Pete
Edmonds Yacht Club (Commodore 1993)
1988 3818 "GLAUBEN"
1980 Encounter Sunbridge "Misty Blue" (Sold)
MMSI 367770440
1972 Chevrolet Nova Frame off Resto-mod in the garage
Boating on the Salish Sea since 1948
Last Edit: by Pcpete.

Need engine 15 Apr 2017 11:36 #17

  • 2850Bounty
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Devon, a 1987 BL would have very likely been an OMC boat. OMC is no longer being produced, and has not been since early 1994.
If this boat is missing both Engine and stern drive, you have the perfect oportunity to go with an AQ series Volvo Penta stern drive system.

FYI's:

Merc's 6.2L is a 377 cu in, and is a new GM engine (std 4.000" bore).
Merc's 6.3L is a 383 cu in, and is a remanufactured GM engine (non-std 4.030" bore).
Both use the GM full dished pistons! :evil:

Neither the OMC Cobra or the Merc A drive are suited for use behind a 6.2L or 6.3L GM engine.

The AQ series Volvo Penta stern drive can easily handle 6.2L, 6.3L or even big block power.
The AQ series Volvo Penta can accept the Duo Prop lower gear unit (25% to 35% more thrust to the water).

If you were to custom build a 5.7L SBC for this boat, you will want to learn about the subtle differences between the Automotive and Marine SBC engines.
If you were to custom build a 5.7L SBC for this boat, you will do much better if you steer clear of the GM full dished pistons!


.

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Rick E. Portland, Oregon
2850 Bounty Sedan Flybridge model
Twin 270 HP 5.7's w/ Closed Cooling
Volvo Penta DuoProp Drives
Kohler 4 CZ Gen Set

Need engine 15 Apr 2017 15:23 #18

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In all likelihood this boat does not have a Merc Drive. If it does because a previous owner swapped what was more than likely an OMC drive with the SEI conversion kit. The Alpha is rated for 300HP. That is the Merc spec. So if your boat does have a Mercruiser Alpha drive and you replace just the engine make sure you chose one that is rated no more than 300HP. 6.2's, 6.3's tend to rated 325-375 depending upon builder. Some of this limit to the Alpha is torque. The Alpha drive is best for runabout applications. The B2 drive is rated for 450HP (gas) and 375 (diesel) engines. Here you can see the factor of torque on a drive.

For your boat, the larger the prop the better. B2 can handle up to a 20" prop. B3 for this application may add some lift to the stern of your boat when up on plane but it is a very expensive drive, and prop sets are over $1,000.

No matter what direction you go, have the drive tested. Put a fresh motor on a tired drive and failure of the drive is inevitable.

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Phil, Vicky, Ashleigh & Sydney
1998 3055 Ciera
(yes, a 1998)
Previous boat: 1993 3055
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