Mercury outboards

Faztbullet

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,936
Re: Mercury outboards

Dont waste your time or money on the Boysen reeds for this motor, use a 1 piece fiber reed like Chris Carsons or Brucatos or change over to the "banjo" style reed as they flow more. The biggest draw back to this engine design is the reed blocks can only flow X amount of air. Slap a T2x front half & carbs on it,little porting and""BOOM""" 185hp!!!!:eek:
 
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~Nickolas~

Petty Officer 3rd Class
Joined
Oct 1, 2008
Messages
91
Re: Mercury outboards

Mine has tilt/trim but has the unit mounted inside the boat near the bilge area. It works fine but is a bit noisey. No leaks anywhere I see so I'm good there. My main upgrade is the fuel enrichment valve but I have to figure out how or where to mount it and not sure how to hook it up. I need to see a later model that has it so I can see how the hose attaches to what the carb I guess?
 
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turtles11756

Petty Officer 1st Class
Joined
Dec 5, 2007
Messages
260
Re: Mercury outboards

check all the bolts holding the crankcase halves together . proply the starter side. one may have a small wire leaded billit seal thru the end of it indicating the motor has never been opened up since it left the factory new, i have a 67' 110hp that merc used a seal on the disrtibutor runs like a top. paid $50.00 for it cause the steering was frozen, and the shift shaft rusted away where it couples to the lower unit .grease everything when putting these lowers back on.
 
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~Nickolas~

Petty Officer 3rd Class
Joined
Oct 1, 2008
Messages
91
Re: Mercury outboards

Faztbullet said:
Dont waste your time or money on the Boysen reeds for this motor, use a 1 piece fiber reed like Chris Carsons or Brucatos or change over to the "banjo" style reed as they flow more. The biggest draw back to this engine design is the reed blocks can only flow X amount of air. Slap a T2x front half & carbs on it,little porting and""BOOM""" 185hp!!!!:eek:
Click to expand...

Sure I have a half dozen or so laying around I'll do it this weekend... LOL I doubt I'll ever run across what your talking about or have the money for it if I did. I am on disability and a fixed income so I have to watch my spending. Lost my job in 2008 and then nobody would hire me because of 3 prior back surgeries and doesn't want me to get hurt on the job. I am a liability to them so my only choice was to file for disability and they didn't want to give me that either. Took me two and a half years and a judge to get approved but I finally did.

So I can only do so much but this is my hobby and I love tinkering with these old motors and being out on the water. At least I can still get around fairly decent and play with my boats. There is a guy up the road with a 70 something 1150 Merc for 200 bucks not locked up and apparently runs. Looks to be complete. I am thinking of getting it to have it as a spare and the price is right.

But seriously the motor I have being what it is runs pretty damn good. After I adjusted all the floats in the carbs it really ran like a scalded dog then. It bogged down a lot when we first got it so I took all the carbs off and the floats were so far out of adjustment I couldn't believe it was even running. They were up all the way almost and also would not lower any so couldn't get the fuel flow. Put it all back together and hit the throttle and man what a difference. God I love the sound of this motor it talks to ya that's for sure. I think I'm hooked already on these Tower's...
 
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Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,537
Re: Mercury outboards

The leaded seal may only be on the older motors. I never saw one on my '77 Merc 1500.

Take a look at the crowleymarine.com website for the mid -eighties inline sixes. The pictures should show how the enrichener is attached. My inline six had the two choke plates, and after a while I was able to figure out how to cold start it w/o much trouble.

Pump primer up hard, cold start lever all the way up. Hold choke button and crank until she fires....Hit choke button a few times until she is warm.
 
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turtles11756

Petty Officer 1st Class
Joined
Dec 5, 2007
Messages
260
Re: Mercury outboards

check the bolts holding the crank case halves together back by the fuel pump. follow the bolts up and all the way down. you may find a bolt that has a hole thru the end of it where the wired seal was placed. my 85hp 1976'77' has it in place so we know mercury used the seal up at least till then
 
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~Nickolas~

Petty Officer 3rd Class
Joined
Oct 1, 2008
Messages
91
Re: Mercury outboards

I looked it over pretty good but not real close as to look for a hole in a bolt. I didn't see anything. However whats the probability of it since this motor has 150psi on all cylinders? What is typical for a new engine of this HP for compression numbers? It seems it is right up there. I got an old Chrysler 135 and it too has 150 on all 4 cylinders. I don't think either one of these motors have too many hours on them. The Chrysler came out of a barn and set for 20 years and the Mercury was apparently stored for quite a few years on the boat and wasn't used. I would think either it hasn't been apart or someone rebuilt it with those numbers. I don't know what the number in white is on the exhaust cover either. Any thoughts? I would think also if it has been apart that you would see tool marks on the bolts and maybe some paint missing. It all looks like it has never been touched along with the tabs bent over on the bolt heads on the crankcase front half.

I've had the fuel pump off rebuilt it so I know there isn't any seal or wire there it is out in the wide open on the port side in clear view. Maybe in 1980 they didn't use these lead seals anymore. Just looking the motor over real good and close as I have it doesn't look like it has been touched. Too clean and no tool marks anywhere. That's another reason we got the boat because the motor was so clean. I have looked at some boats and motors for sale ands they were pretty nasty and grungy looking and not taken care of and I steer away from those but this one was super clean. For my first Mercury I think I got a good one anyway...
 
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