| Author |
Message |
    
jason russey
New member
Username: jason294
Post Number: 2
Registered: 01-2010
| | Posted on Sunday, January 31, 2010 - 06:37 pm: | 
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my boats in the shop and the mechanic is telling me i need a new engine due to damage caused from an exhaust manifold failure that allowed water to feed directly in to the engine. he offered me three fixes.
1: buy new rebuilt block and rebuild/swap rest of engine 7900$
2: buy certified pre owned engine complete package 8100$
3: they have a previosly owned 5.7l mpi mercruiser in stock 7600$
my current engine is a 5.7l efi carburated mercruiser.
which option sounds best to you pros?
what concerns should i have on the previously owned mpi?
what qustions should i ask?
help me if you can!
Jason |
chiefalen
Advanced Member
Username: chiefalen
Post Number: 566
Registered: 03-2008
| | Posted on Sunday, January 31, 2010 - 06:43 pm: |
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it ain't fi and carbed.
Me i would buy a brand new crate motor from gm 5.7 and switch over the externals.
Bye the way what year is this motor? |
Kghost
Senior Member
Username: kghost
Post Number: 1237
Registered: 07-2008
| | Posted on Sunday, January 31, 2010 - 07:14 pm: |
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A remanufactered long block cost ~ $2500 max
All parts can be swapped and new manifolds and elbow/risers can be purchased.
Maybe get out of it ~ $3500
If you have the marina do it you may be at there mercy!! |
Bt Doctur
Senior Member
Username: bt_doctur
Post Number: 1285
Registered: 06-2006
| | Posted on Sunday, January 31, 2010 - 08:58 pm: |
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A long block is about $1900.00 from JEGS.
sounds like you mech is looking to update his shop too. |
Ricardo E.
Senior Member
Username: ricardomarine_vp
Post Number: 1072
Registered: 03-2009
| | Posted on Sunday, January 31, 2010 - 11:31 pm: |
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Try http://www.michiganmotorz.com/
They can offer you either a re-man or new GM for likely less than what you are being quoted.
They can offer you long block engines, complete engines, complete engines with exhaust and Closed Cooling systems.
Good people there!
Keep your old parts..... someone out there will buy some of the usable parts from you.
. |
baytro23
Member
Username: baytro23
Post Number: 79
Registered: 11-2006
| | Posted on Monday, February 01, 2010 - 01:27 pm: |
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Lucky for me I found a 90 hour 2006 Mercruiser 350 magnum long block a year ago. The fi was trashed so I bought a used intake and re-used my carb. and all externals from my 1994. Had to add a electric fuel pump. Used block $400, used intake $100, gaskets $100, chain hoist $40, gas to Florida and back @ $4 per gallon $ a lot, free labor from my bro-n-law and myself -- Total cost of re-power $1000, runs like a scalded dog. |
Ricardo E.
Senior Member
Username: ricardomarine_vp
Post Number: 1084
Registered: 03-2009
| | Posted on Monday, February 01, 2010 - 01:37 pm: |
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"Had to add a electric fuel pump"
Hopefully you also added the low-oil-pressure-shut-down to the fuel pump circuit! Yes? |
Kghost
Senior Member
Username: kghost
Post Number: 1247
Registered: 07-2008
| | Posted on Monday, February 01, 2010 - 03:33 pm: |
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That would be the oil pressure sender location and it requires a oil pressure switch teed off the fitting. the 12 volts that supplies the pump is run thru this so if you loose oil pressure the fuel pump shuts off or lack of when starting prohibits the pump from running ( I believe ~10-15 psi is required) for switch to close.
Standard issue for any marine electric pump application |
baytro23
Member
Username: baytro23
Post Number: 80
Registered: 11-2006
| | Posted on Monday, February 01, 2010 - 04:12 pm: |
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correct - you can get you a kit too, rhttp://www.michiganmotorz.com/electric-fuel-pump-p-98.htmlat cheer: |
baytro23
Member
Username: baytro23
Post Number: 81
Registered: 11-2006
| | Posted on Monday, February 01, 2010 - 04:13 pm: |
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that was supposed to read rat cheer: http://www.michiganmotorz.com/electric-fuel-pump-p-98.html |
