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  1. 4

    Metal shavings in 81 black max 175hp lower unit. What to all replace?

    Got water(edit, actually is metal shavings) contamination in the lower unit of my 81 black max 175hp. It will go into gear still but will slip out of gear if I try to put any thrust on it. Should I just do all the bearings and seals or is there anything else I should look at while I'm in there...
  2. 4

    Uflex rotech steering system where a dual cable steering was?

    I want to put a new steering system on my boat. I've got a 81 mercury black max 175hp outboard with the dual cable steering on my 79 glastron cvx-20 sprint. I was looking at the Ulfex Rotech steering systems. Mine has the wrong steering wheel and rusted steering cables so the steering is tough...
  3. 4

    Replacing Mercury prop hub, can I do it myself?

    Can I replace the prop hub on my 1984 mercury 90hp inline 6 outboard myself? Are any special tools needed? Will I be able to get the hub out myself or will I need a press? I have a prop with a spun hub. I found the kits online that just come with the rubber hub and the kits that come with the...
  4. 4

    Rebuilding a chrome bore merc 200 hp 2.4?

    Bought a boat that came with an early 80's merc 200hp. I understand this to be a 2.4 with chrome bores. Previous owner said 2cyls lost compression and the motor was disassembled and not touched since. I haven't looked at the block yet, but if the cylinders are bad, what are my options other than...
  5. 4

    Inboard boat fuel mileage vs engine size

    I've been doing some reading on boattest.com and looking at reported fuel mileage figures. What I'm seeing is hull weight and shape seems to make more difference to fuel mileage where engine displacement doesn't seem to make as much of a difference at around a 25mph cruising speed, assuming...
  6. 4

    What's the difference between marine and automotive distributors?

    What makes a marine dist USCG approved where an automotive distributor is not? I tried doing a search and all I could come up with is a lot of arm waving and confusion on how a distributor works. I'm not advocating the installation of an automotive distributor on a marine application, I would...
  7. 4

    What years of outdrives will fit my 75 Mercruiser gimble?

    I've got a complete gimble from a 75 model year boat. It's the older style with the in-line trim sender. Will any 1967-82 MC-1 outdrive fit(forget about gearing for a second)? Will any other years/models of outdrive fit or do I have to keep to that year and model range?
  8. 4

    90hp on a 20' 200hp rated boat?

    Here is the boat I've got but with a non-running outboard(needs full rebuild): http://www.classicglastron.com/1986_Glastron_CVX20sprint-intim.html I've got an excellent condition 1986 Mercury 90hp inline 6 I could borrow off my other boat so I could at least get this hull in the water. The...
  9. 4

    84 Merc 90hp 6cyl slipping out of forward gear...

    Had the boat out at the lake, during a medium left turn at it would momentarily slip out of gear, did the same at a bit of a harder right turn. Then the next day it started momentarily slipping out of gear during a straightline accel when trying to get the boat to plane. Throttle down a bit and...
  10. 4

    Any harm running w/o rectifier? 1984 90hp 6cyl.

    Just replaced the rectifier with a brand new quicksilver brand one from the mercury dealer in a failed attempt to solve a non-operational tach issue. The new rectifier lasted about an hour or so out on the lake before something crapped out and the motor started sputtering and I had to nurse it...
  11. 4

    Is this much fuel behind the pump diaphragm normal? [pics]

    In trying to help diagnose why my 84 90hp cyl is sputtering/misfiring I popped off the fuel pump to take a look. There is a little bit of fuel pooled behind the fuel pump diaphragm. Behind the upper hole you can see in the pic there is a bit of fuel that was sitting there. The upper section of...
  12. 4

    84 Merc 90hp 6cyl sputtering, where to start looking??

    Took the boat out on the lake the other day, for the first hour and a half everything was great. Then when I took it to 3/4 throttle it randomly started sputtering like it was misfiring. So we nursed it back to the boat launch and took it home. Sputters/misfires slightly at idle but gets worse...
  13. 4

    Quicksilver tach not working w/ 84 merc 90hp

    My quicksilver tach isn't working and I'm wondering if I can run a wire directly from the tach to my 1984 mercury 90hp 6cyl? The way it is setup now, the tach signal wire leads into my quicksilver controls, and from there they go back to the motor. At one point someone did some monkeying around...
  14. 4

    90hp 6cyl how many t-stats/poppet valves?

    On my 84 90hp cyl merc would I have one t-stat and one poppet valve? I've seen some motors have two t-stats so I just want to be sure before ordering parts.
  15. 4

    84 Mercury 90hp I-6 impeller replacement help.

    Edit: Found some instructions that answered my questions on the impellor. Also, I was going to replace the oil in the lower unit while I'm at it, what kind of oil should I run in there?
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