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    Distributor points cam

    The tune up kit I just bought for my 1984 Tempest has no lubrication pad included to oil the distributor cam, or any way to fit one, should I be concerned?
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    Question on stern drive re-installation

    1984 3L stringer I'm getting close to putting the sterndrive back on. In the factory manual, it recommends marking the ball gears during removal, I guess they want the balls mated up during re- installation in the same relativity they were separated. My problem is that I got this boat with the...
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    Help needed on OMC stringer

    My boat came to me with a seized lower end, and disassembled. I have repaired the lower end and am in process of re-assembling, but have a question about the upper gearbox. The ball gear turns easily by hand in a clockwise direction, but seems too tight to turn by hand anti-clockwise. Is this...
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    Fuel pump problem

    1985 OMC 3l. Boat was standing for 2 years with stern drive problem, so I turned the engine over to see if it was free. No problem there, but found fuel was not being pumped from the tank. Pump bottom was full of what I can only describe as tar, so I cleaned it out and got it pumping by hand, no...
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    Question regarding prop shaft

    1984 OMC 4L sterndrive rebuild Newbie question, I have removed the prop shaft assembly from the lower gear case, and I can see how water is kept out of the gear case by a series of O rings and cup seals. Since this came to me almost totally disassembled, I loosely place all the components on...
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    Neede help identifying OMC stern drive

    I just bought a 1984 Tempest 4cyl with a model 983486 stern drive which came to me in pieces due to a seizure. Not sure I want to tackle that, since I have zero experience. I plan on searching for a used replacement, and may have a line on one, a model 982740, which I think is the previous...
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    shallow launch

    I'm thinking of buying a small, older boat to use at a relatives cottage, probably 16-18 feet. His launch is quite shallow, around 24"-34", depending on how far he backs the trailer in. Which type of motor is best for this kind of situation, inboard or outboard, or is there no advantage, would...
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    Help, how heavy is my boat?

    I have a 1982 Larsen fibre glass, 17 feet long, with an aproximate beam of 79", and fitted with a Mercruiser 470 inboard, (yes, I know). I need to know the total weight of the boat in order to source a boat lift, but Larson can't help me, using the number on the transome plate. I found Larson...
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    470 Mercruiser, high oil pressure

    I just finished an engine rebuild on a 1982 Mercruiser 470, including bearings, a new Melling oil pump, and a mechanical oil guage. Everythings running fine out on the lake, but I noticed I am getting 75lbs oil pressure at 2500rpm. (it drops at lower revs). Does this sound too high, and should...
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    Mercruiser 470 - Oil Baffles In Pan?

    I rebuilt the engine on my 1982 470 last year, and ran it in gently, but it gave up a rod bearing last week, due I am told, to a lack of oil, and I'm in the process of rebuilding it again. I'm keen to avoid having to do this a third time, and a contact has suggested that the absence of oil...
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    1982 470 developed engine knock

    I have been using this 470 all of last summer, and for the first month of this year, and it has been starting and running fine. I have never had to take it over 3500rpm, but when I tried last week, the engine "bogged down". I re-set the timing, and took it out again, and had no trouble reaching...
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    470 3.7 ignition timing

    When I rebuilt my 3.7 Mercruiser, I timed it manually at 4 degrees BTDC. In the water the engine was missing, so I connected a timing light and saw it was several degrees in advance, (2" off the marks on the rotor) I retarded it, and this fixed the missing problem, but since the distributor has...
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    advice on running in a rebuilt engine

    I'm finally ready to put my 470 mercruiser in the water after a rebuild including rebore, pistons, rod and mains bearings, head job etc. Can anyone offer instructions or point me to a link that will help me run it in?
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    470 MerCruiser alignment question

    I have successfully completed the alignment on my 80-82 470 engine using the tool described in many posts, but I am a little worried about the dimension where the tool passes through the gimbal bearing. It measures 1.375" at this point, but seems a fairly loose fit as it sits in the gimbal...
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    Alignment question - rear mounts

    From perusing previous posts on this subject, I know I'm not alone in being totally confused by the rear mount arrangement on my 470 Mercruiser. I want to resolve this issue prior to doing an alignment. I have all required parts in their correct place,including fibre washers and double helix...
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    front motor mount adjustor

    The front motor adjustor on my 470 seems to be either missing parts, or assembled incorrectly, causing the motor to move up about 1/8". On the top of the assembly, where the bolt protrudes, I have a steel collar roughly 1" long, sitting over the bolt, and a 3/16" fibre washer which slides over...
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    Gimbal Bearing

    Can someone explain the operation of the gimbal bearing to me? I realise it must rotate with the drive shaft, and mine is quite free in that regard, but I would have thought it should also swivel freely in it's housing to facilitate alignment, but since mine doesn't, I am assuming it is siezed...
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    Bond new floor to hull

    I've put a new plywood deck in my 18 foot fibreglass boat, and I'm looking for information on the most effective way to bond the edges to the fibreglass hull in order to prevent leakage. What kind of cloth should I use, and how many layers. I also plan on coating the entire floor with epoxy, can...
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    Engine alignment question

    I am nearly ready to re-install my 470 Mercruiser engine, but I have lost the correct height of the front engine mount so I can't just pop it back in. Can anyone advise the correct procedure at this stage, to get the engine back in, and aligned properly?
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    Is my exhaust riser correct?

    I am reassembling a 1980-82 Mercruiser 470 after an engine rebuild. My question involves the face where the riser clamps on to the exhaust. Can anyone tell me why the exhaust has a water port on all 4 sides, but the riser elbow only on one, (casting #98561). Does this not limit cooling? The old...
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