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Working on 1979 Mercruiser 470 (serial number 5120717).
Working on 1979 Mercruiser 470 (serial number(###) ###-####. Outdrive is a pre-Alpha (MC-1)I am replacing the impeller today. Watched a video in which a guy hooked a drill up to the shaft of a lower u… read more
Ted G.
Ted G.
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Vocational, Technical or Trade Scho
2,678 satisfied customers
Looking at a twin engine boat 470 merc c/w 898 outdrives as
Looking at a twin engine boat 470 merc c/w 898 outdrives as pretty much spare parts for a slightly smaller / lighter 21 ft with single merc 260 and alpha one outdrive. Apart from any through transom i… read more
Jason
Jason
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Vocational, Technical or Trade School
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I need to replace the impellar on my seawater system for my
I need to replace the impellar on my seawater system for my 5.0 Ltr mercury Is there any diagrams showing how? How do you take off serpentine belt?… read more
Noel Schembri
Noel Schembri
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If I replace my current 5.7L Mercruiser (1994) in my ciera
If I replace my current 5.7L Mercruiser (1994) in my ciera sport classic 22.5 ft, what would be comparable today? 300 hp 5.7l Magnum?… read more
capt ron 1959
capt ron 1959
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Vocational, Technical or Trade Scho
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I have a mercruiser 160HP and a mercruiser outdrive Alpha1.
I have a mercruiser 160HP and a mercruiser outdrive Alpha1. I can not find any identification numbers on the outdrive anywhere and the serial # XXXXX faded away. Will any mercruiser alpha 1 outdrive b… read more
Jason
Jason
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Hello, I work on just answer as well,However have a issue with
Hello, I work on just answer as well,However have a issue with mec-outdrives on in boards thiing is can i cahange out the 470 alph to to the next gen.11 without changing the bell & outdrive shaft ?...… read more
Jason
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I am looking for an ocean fishing boat for my family. My choices
I am looking for an ocean fishing boat for my family. My choices are: 1) 1978 24ft Wellcraft Airslot powered by a new mercruiser/chevy engine and matching outdrive. Both have 200hrs. ($4,500) 2). 1979… read more
Captain Dave
Captain Dave
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i have a 87 bayliner capri 19ft openbow with a 3.0 omc motor
i have a 87 bayliner capri 19ft openbow with a 3.0 omc motor has no outdrive can not find one . i was wondering if i could switch the motor to a merccrusier 3.7 and alpha 1 outdrive on this boat… read more
James
James
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Vocational, Technical or Trade Scho
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I cannot identfy the numbers on the rig I got, upper and lower
I cannot identfy the numbers on the rig I got, upper and lower unit decals are ruined not legible the engine number is(NNN) NNN-NNNN 4cyl. cover ident .120 hp could be 153 cid., the transom plate show… read more
Jeff G.
Jeff G.
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Vocational, Technical or Trade Scho
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I need a wiring diagram for a 1976 mercruiser trim pump. Im
I need a wiring and hydraulic line diagram for a 1976 mercruiser trim pump. I'm not sure if the solenoids and wires from the trim switch are wired correctly. Its a black metal trim pump, with the squa… read more
Tan
Tan
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what type of alpha drive unit do i need alpha 1 , alpha 2
what type of alpha drive unit do i need alpha 1 gen, etc..? for a mercruiser 228. will a mercruiser 888 outdrive work? it says is has a 1.50/1 ratio it says it came off of a 1978 ford 302 engine… read more
K. Kergan
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what type of outdrive unit do i need i just bought a boat
what type of outdrive unit do i need? i just bought a boat with a 228 mercruiser in it and doesnt have an outdrive on it and im not familier with these type of engines at all.… read more
Whitecap36
Whitecap36
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1,557 satisfied customers
What is the correct gear ratio for the outdrive on a MCM 5.7Lv8
What is the correct gear ratio for the outdrive on a MCM 5.7Lv8 the boat is a Rinker, Engine serial # XXXXX Trans serial # XXXXX there is a 1.84:1 on at the moment but we think it has been changed, an… read more
capt ron 1959
capt ron 1959
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i bought a 23 1988 sea ray boat with no type of drive train
i bought a 23' 1988 sea ray boat with no type of drive train left in it i am wanting to put a 350 chevrolet motor in it what all do i need to complete the drive train assembly besides the sterndrive a… read more
Captain Dave
Captain Dave
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What is the gear ratio in the outdrive of a 1983 webbcraft
What is the gear ratio in the outdrive of a 1983 webbcraft enterprise 23'. the boat had a 5.7 mercruiser in it i am putting a 454 into it so whats the best gear ratio to have in the lower unit? THANKS… read more
capt ron 1959
capt ron 1959
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Good Morning, Have a couple boats. One a 1972 IMP with a 302
Good Morning, Have a couple boats. One a 1972 IMP with a 302 ford v-8. What out drive does it have? The stickers are worn off. The other boat is a 1988 wellcraft sportsman 250 with twin inboards 3.8 l… read more
Pappy's Sales and Service
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86 3.7 mercruiser with closed cooling system. Overheated and
86 3.7 mercruiser with closed cooling system. Overheated and when I fill the cooling system water leaks out the back of boat… read more
Michael
Michael
master marine technician/charter captain
Vocational, Technical or Trade Scho
256 satisfied customers
my boat leaks water at the rear of engine from what looks ...
my boat leaks water at the rear of engine from what looks like a pipe that runs between the engine and the out drive. it''s a mercruiser out drive. what''s the problem. what do i need to do to fix it.… read more
JUST-IN-TIME
JUST-IN-TIME
CERTIFIED MARINE/PWC TECHNICIAN
Vocational, Technical or Trade Scho
74 satisfied customers
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Meet the Experts:

Ted G.

Ted G.

Rigger, Diagnostician

2,678 satisfied customers

40 years boating, Safe boating instruct., Offshore Race promoter, Failure Analysis, Expert Witness

Dominick

Dominick

Marine Mechanic

1,009 satisfied customers

25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified

John White

John White

Marine Mechanic

306 satisfied customers

11 years experience working on outboards, inboards, sterndrives & pwcs

Jason

Jason

Marine Mechanic

22,043 satisfied customers

Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

MerCruiser Certified Technician

11,409 satisfied customers

40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.

Jeff G.

Jeff G.

Marine Mechanic

4,730 satisfied customers

42 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance

Captain Dave

Captain Dave

Marine Mechanic

2,672 satisfied customers

USCG Licensed Captain, 20+ Years Boating, Fishing, Maintenance and Repair Experience

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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