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    Looking to buy a new side mount shifter

    After using the boat all last summer Ive decided to keep my current boat (1990 4.3 I/O) and the one thing that really annoyed me when I used it was the factory quicksilver shifter. It kinda broken. the neutral lock button doesnt work and when you put it in forward gear you have to push the...
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    Mercury 175 idle stabilizer and timing?

    Working on a friends boat with a mercury 175 blackmax serial 6619236(84 motor I think) that wouldnt run past idle. Found the stator to be bad. Now I looked over everything else on the motor and the red wire coming out of the idle stabilizer box is corrorded. Ive read most people remove them...
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    merc 4.3 balancer fell apart

    After running my boat a few hours yesterday I started noticing a metal on metal rotating rubbing sounds. After looking into it at the lake I figured the water pump was going out and continued to run the rest of the day. Ran fine, didnt notice any excsessive vibration from what it normally...
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    470 fuel pump priming?

    So after countless trips to the lake last season only to find the check valve coming out of the gas tank would randomly stick ending my day. I thought I finally had a strong running boat. Took it out for the first time this season and after burning off a quarter tank or so, Its dies. If I pumped...
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    alpha one streaming out drain hole?

    I started my boat for the first time in months(usually just start em every other month in the winter) and i noticed a good stream of water coming from the drain hole in front of the water pickup holes on the drive. I dont ever remember seeing water come out of there when its running on the...
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    started with drive up....

    Well I did it. Forgot to trim the drive down when I started it at the ramp. It wasn't at full lock .I bumped the trim down for a sec( usually do it just to make sure trim works before I launch). I ran it for prob 30 sec at less then 1500 rpm before I noticed. Think I damaged somthing? The u...
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    merc 4.3 shift interrupt wiring not hooked up

    EDIT: So i figured out the switch and the cable are OK on my 1990 merc 4.3. I started looking into the wiring (thunderbolt IV) and the white/green wire is directly connected from the distributor to the ignition "box" mounted on the manifold. Its got a diode right next to the bullet connector...
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    1990 larson senza 170lx pics?

    Im trying to find pictures of a 1990 larson senza 170lx with and I/O. I need to see what the rear engine cover looks like. if anyone has one or can find a picture that would be great. needs to be the exact model or the rear deck is different. On another note i just finished redoing most of the...
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    starving for fuel? starter dead!

    Alright... who dumped the water in my gas tank?:D . Today my boat (86 470) finally ran awesome untill just before i was ready to go in. It starts to starve for fuel if you run it above 3k or so. What happens is i get the boat on plane and it runs fine for about 10-15 sec then it falls on its...
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    470 water temp sending unit...gauge

    anyone have a part number for a sending unit for my water temp gauge. Its an 86 470 & it has the original water temp gauge. I figured the ohms are prob somewhat standard. If anyone has a vehicle make and model that works so I can get one from autozone that would be much appreciated.
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    Coil recommendation? 3.7

    Took the boat out a again after having fuel delivery issues. Ran fine for about 20 min. Pulled over to the shore to try a different prop. Went to restart and I got plenty of fuel but no spark. It has pertronix and the original coil has a stripped stud so I put an epoxy filled msd marine coil on...
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    almost sank... didnt forget plug

    I figured ide share one of my SHT i performed while on the water. My friend had just bought a new to him boat and we check everything out and decided were got to go. So we get to the lake and i install the plug. we launch the boat, everything is going fine until i look back and see water...
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    mallory exhaust parts

    Im lookimg at a mallory elbow for my 470. Who makes their parts? There a lot cheaper then other brands. If anyone has any experience with their products can you provide some feedback?
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    New starter not fitting

    I bought a new marine starter for my 4.3 and it doesnt fit. Motor is a 89 and I bought a large body motor starter for mid 80s to 92 is what it says. Is it possible I need smaller starter. It doesnt set all the way against flywheel cover. Misses bolt holes by 1/4 or so. Will the newer mini...
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    Outdrive filled w/ water! Drive oil is in Bilge

    Re: Outdrive filled w/ water! Drive oil is in Bilge the input seal is the one behind the big castle nut right by the u joints. im pretty sure my drive had the same play in the vertical drive shaft with everything disconnected. it uses the upper to push down the bearing and support it which is...
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    470 not getting fuel

    Took my boat out for the first time today and engine ran great for about 30 min then sputtered and died. Checked everything out and it is not getting fuel. Check valve works in tank and fuel filter its new. Pulled off the pump (carter with bottom bowl) and the bowl filter its ok. When I move...
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    4.3 leaking manifolds

    So i just cant catch a break... I got another boat with a 89 4.3 merc in it and i noticed the manifolds leaking. I was told it didn't idle that good(sat for 2 years before this summer). I got it to idle nice, but when it warms up and idles for more then 20sec or so it starts to idle low and...
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    Mercruiser exhaust shutter

    Ive got a merc 470 and before I take the boat out for the first time I want to make sure the shutter is in good working order. I just had drive and bellows off and didnt notice pieces of the shutter in the exhaust. When its idiling most water/exhaust comes out side holes. Some comes out prop...
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    My Garage fab 470 alternator bracket

    Alternator conversion round 2. Figured ide post a pic of the bracket i made for my 470 alternator conversion. maybe it will give someone ideas if they want to make one on a budget. I originally had the low mount cast aluminum conversion which is junk( pulley starting to separate and bracket...
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    Mercruiser 170 timing cover

    Ive got a 86 mercruiser 170(470) motor im doing the cam seals on. i havent pulled the timing cover yet. I was wondering why they say you need to remove the front engine mount to do this? i looked at it and unless the alignment dowels are over an inch long ive got clearance all the way around it...
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