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    1974 Johnson 85hp

    Hi, Been a while (mostly due to my super reliable 88SPL) since I have been looking for wisdom. Recent saga. Picked up a project boat with a 74' 85hp Johnson. Fuel was sour and carbs gunked up. Was able to get it to fire for a moment with a quick shot of starting fluid to insure it had spark...
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    1990 V4 88spl Johnson Dazed and Confused

    Hi, Been quite some time since last post (sold my 4.7 Mercruiser and got a Johnson OB!). History: Have owned this motor for 4 years. Used frequently, even during the winter months. Constantly running fresh fuel. Never any issues at all. Always starts well and runs great. Only slight smoke at...
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    80 hp Mercury Lower Steering Pivot Slop

    Hi, I'm looking at a boat with a late 80's Mercury 80hp. While checking things out, I pulled back on the lower unit (with motor in full down position)and I could see that the lower steering pivot point is sloppy. Is this a major job to deal with ? Any idea how many HRS a shop would charge ? I...
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    New member of the ex-470 Merc Club

    Hi, I feel like I just passed a Watermellon. OK, that's exaggerating. How about a small monkey. My last straw was shreading teeth off my ring gear (30 KT wind from the North and I was North of jagged boat eating rocks). Kinda funny that a 1977 470 uses the same ring gear as a 1977 Ford Maveric...
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    Bf100 (10 Hp) Project Motor

    Hi, I just sold my boat along with the 10 hp Honda that I really liked. I came across another motor the other day and I just had to buy it. The guy said it was on a boat he bought and he did not need it (yadda-yadda). He said it bogged on acceleration when he tried to run it. After getting it...
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    Coolant Dripping From Outdrive

    Hi, I have a 470 Merc which I rebuilt and now has around 50 hrs on it. This year I have noticed that the coolant level in the reservoir has been dropping. I have been topping it off but after returning from my last trip out, I checked the level by removing the rad cap and it was dry. I added a...
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    Merc Trim Pump Electrical Connections

    1978 Mercruiser 470<br /><br />Hi,<br />My trim pump was acting up (very slow motor, then would speed up) and I suspected something was going on with the brushes. I disconnected all the electrical from the assy and removed the motor.<br /><br />Good news, stuck brush.<br /><br />Bad news, now...
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    Add a PCV system ?

    Hey,<br />Crazy thought, would there be any benefit to adding a PCV system to a 1977 Merc 470 ?<br /> (470 bashers please be kind ;) )<br /><br />I was hoping for a 25 HP increase :D , or would be happy with a healthier engine.<br /><br />Whatcha think ?
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    SMOKE FRON UNDER DASH WHILE CRANKING

    Hi,<br />While trying to start my 470 Merc (probably fouled plugs, like a dummy I thought I would try something different, have yet to take a look), some smoke emerged from under the dash (can you say pucker). Eventually get it started.<br /><br />Do you think this came from the ignition switch...
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    BF100 mid 80's worth buying ?

    Hi,<br />I'm making the switch from 2 stroke to 4. Is the subject Honda a solid outboard ?<br /><br />I'm looking at 2 different ones at the moment and was wondering if they are troublesome and if there are things to watch out for.<br /><br />Thanks........RH
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    Fuel pump on it's way out ?

    1978 470 Mercruiser (rebuilt but re-used fuel pump)<br /><br />Hi,<br />Three times now (after rebuild) while returning from a day out (around 3 hrs run time) the engine will start to start to surge. Starts out very slight but within a few minutes it is as if the fuel line was closed off and...
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    Pertronix converted, now will not start

    Hi,<br />I just installed a Pertronix 2 ignition along with Blaster 2 coil and Pertronix wires on my 1977 470 Merc. Ran fine with the points. I checked for at least 12 volts on the red wire between unit and coil and all the basic stuff like plug wire orientation and other associated wire...
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    Mercruiser power trim pooped out ?

    Hi,<br />I have a 1977 vintage (U/O 470)and it has worked fine for the 1 1/2 years I have ownwd it. This year I have used the boat around 10-12 times with no problems but the last two times out, the pump seemed to labor (slow growl rather than a high speed whine) and the switch buttons actually...
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    470 Merc been there done that guy needed

    Hi,<br />I'm starting a rebuild on a 1978 version. Having trouble finding a supplier of timing set.<br /><br />Is this same as a certian Ford ? (as the head<br />is 460 Ford) <br /><br />I want to say THANKS to you all as from time to<br />time I ask a question or two and always get great<br...
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    Can't get aft motor mount bolt out

    Hi,<br /><br />I'm back again hoping to get some great advice (which I always do).<br /><br />I/m going to remove my 470 Merc and replace with a rebuilt of the same. I'm down to the mount bolts now. The front was no problem, as was the port aft mount bolt. The starboard aft bolt will turn...
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    470 Merc metallic rapping sound

    Hi all,<br />I have a 21' Glasply with a 470 that had 1,200 hrs on meter when I bought it. I have since put on around 25 hrs of trouble free use. Ran great and strong although a bit of piston slap while cold.<br /><br />While cruising on home last week (3,200 rpm) all seemed well until all of a...
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    prop size conversion

    Hi all,<br />I have a 1978 21' Glasply (average weight V hull) and a 470 Merc.<br /><br />The prop that is on it is a 15x18 beater that has been repaired more than a few times and is in sad shape (I want to use it as a spare)<br /><br />I get to my 4,200 rpm max.<br /><br />1) Will the year of...
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    Repair manual can't make up it's mind

    I'm trying to set ignition timing on my 1973 65hp Evinrude (model 65373R S/N J0019398).<br />My repair manual (SELOC) states the following:<br /><br />(In the procedure section) "pickup timing is 2 degrees ATDC to TDC" & "maximum advance is 18-20 degrees BTDC"<br /><br />(In the tune up spec...
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    Head bolt snap-o-phobi***

    I need to pull the cyl. head on my 1973 65hp Evinrude (partially stripped plug thread).I'm not a big fan of removing broken off bolts as I feel life is way too short to deal w/ crud like that. Any you guys have any tricks ??<br /><br />P.S. I think the head has not been removed before.........Thanks
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    LOWER UNIT PROP SHAFT SLOP

    On my 1973 Evinrude 65 hp, which I have put approx. 6 hours on since I bought it, there is approx. 1/8 turn at prop.(left or right) before gears engage. Is this acceptable or will I be looking at a rebuild soon ?<br />I have not heard any unusual noises while running, but I do not have enough...
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