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  1. M

    Classic 50 Loss of Power and Reduced RPM

    Xposted on marineengine dot com Motor Info: Serial No: A999862 1986 4 cyl. MERCURY 45 ELPTO PARTS CATALOGS: 13287 - 45/50 Hp WOT: 5000 - 5500 Mixture: 50:1 Gear ratio: 1.83 Prop 13 splines 10 5/8 diameter by 12" pitch Black Max prop? Gear Oil - 80, 90, or 80w-90 GL-5 Problem: Motor ran...
  2. M

    Mercruiser trim is all the way up, but won't go down.

    I have a 1979 Mercruiser 228. After running all day today I came back to wash down. The trim went all the way up, but now won't go down. The "automatic stop" has not worked on the trim for years, and the indicator hardly works as well. When I hit the trim up buttons, I can hear the motor...
  3. M

    Help locating power steering booster cylinder

    I need to replace the power steering booster cylinder on my Mercrusier. I was told my the gentleman at Aftermarket Marine, that it has to be ordered from a Mercury/Mercruiser dealer (it is not available aftermarket). Can someone tell me the part number of this unit. Details: Mercruiser 228...
  4. M

    New Prop for Mercruiser 260

    There are a billion props out there... and I don't know where to start. I have a Mercruiser 260. It is currently underproped with a 19 pitch, SS three blade. I wish I could provide more info on the prop and WOT, but I don't have it with me at the moment. If I recall correctly, I can trun...
  5. M

    Anyone have experience with a performance flame arrestor?

    I've been doing a little work on my boat lately. Yesterday I took her out for a test run with all the rear seating and engine enclosures removed. The loudes noise was clearly from the air flowing through the flame arrestor. I couldn't help but think that the friction necessary to produce that...
  6. M

    Need Part Number for Trim Hose (Mercruiser)

    1978 Mercruiser Pre-Alpha I believe the OEM Part # is 32-86036Q. Can someone please confirm? Can someone please help me find a part number so that I can replace this trim hose: On this outdrive: With this serial number: (52357?2) It's leaking where then braided line meets this...
  7. M

    What is this hole in the block?

    After my last trip I came home, unhooked the boat, and jacked the front of the trailer up. I went in my driveway this evening to find the ground full of oil (which drained from the bilge). I began the daunting task of removing the back seat to get a clear look at the engine (a 2bbl 350). I...
  8. M

    Boat Cover Help

    I have a 19.5 ft traditional runabout with deck rails. I'm looking for a cover to use when trailered that would cover not only the top of the boat, but also the sides. My intention is to keep the gel coat protected fro the sun. The boat is under my carport, but still receives some sun. I'm...
  9. M

    Merc 5.7 Temp Gauge Sending Unit

    1977 Slickcraft. Mercruiser/Chevy 5.7 carborated. I was cruising home yesterday and the engine started to sputter. I opened the engine cover and there was water in the bilge slightly over the top edge of the oil pan. (We had experience a hard rain and the float on the bilge pump did not...
  10. M

    Shotski

    Who says Yacht Clubs have to be snotty. This is what they made us do on our visit to the New Orleans Yacht Club last weekend: Shotski: Take a wooden water ski. Drill holes in it. Insert shot glasses in holes. Fill shot glasses with poison of choice. Get some buddies. Pick up and lean shotski...
  11. M

    Checking Trailer on New Project Boat

    I cross posted this in the boating restoration forum because I thought they may have some experience with well used trailers on well used boats. I'll be picking up my new project boat soon (late 70's 24 ft Stamas). Before then (maybe today), I'll be going to take a look at the trailer to...
  12. M

    Checking Trailer on New Project Boat

    I'll be picking up my new project boat soon (late 70's 24 ft Stamas). Before then (maybe today), I'll be going to take a look at the trailer to ensure it's ready for the 120 mile trip to my house. Can anyone give me a rundown on what I should check? Feel free to assume I'm as ignorant as a...
  13. M

    Chicks dude... chase 'em!

    The picture above was taken in my boat one day on the Amite River Diversion Canal in Louisiana. The canal is a popular waterway with a lot of houses, boat launches, and bars. At each bar/boat launch there is a no wake zone. On the way in that day, we were idling past one of the bars when some...
  14. M

    Finding Engine Specs

    I'm trying to locate some information on the power curve for my new engine so I can properly prop it to hold WOT in the max HP range. Does anyone know of a source where I could reference the numbers cast on my block to find a HP curve or at least a peak HP RMP? I've had some luck searching...
  15. M

    End of Summer Lake Bash, Amite River Sandbar, Lake Maurepas, LA

    Twice-a-year these guys drag a barge out to Lake Maurepas, put a band on it, and throw one heck of a party. This was my first year, so I took lots of pictures. I figured I'd share with everyone. http://www.kodakgallery.com/I.jsp?c=8tmbjws3.4qxfhsdv&x=0&y=-xecshk
  16. M

    Mercruiser Service Manuals

    Does anyone know if I can find Mercruiser Service Manual 2 (part no 90-71707 ) in a pdf online (like boatfix has everything AFTER that)? If not, where does everyone normally get their service manuals?
  17. M

    Malfunctioning Trim Position Switch

    Pre-Alpha H.P. 120/140 My trim position switch only moves from the 1/2 down to the 3/4 down position. I removed the switch from the starboard side of the outdrive, inspected it, re-installed it, and ajusted it so that the needle sat at the bottom of the trim guage when the outdrive was fully...
  18. M

    What gear ratio is my outdrive?

    Mercruiser Pre-Alpha Serial Number on port side 4530652 Starboard side says "H.P. 120/140" The assembly on the transom has serial number 5235762
  19. M

    Keel Worn To Glass

    Over the years, a section of my keel has been worn down (beaching) so that now a small portion of the glass is showing. How should I go about repairing this? Should I re-apply the gelcoat over it? Should I use resin? Any other suggestions? It's not a puncture... just an even wearing of...
  20. M

    Inconsistent loss of power in 4 of 8 cylinders

    My friend's boat. A 2002 Super Air Nautique with a 5.8 PCM, v-drive. We were out having a good ol time. Came off plane to pick up a boarder, turned around and gave it throttle and RMPs topped out around 2000(ish) and very little power. Started pulling plug wires at the distributor to see if...
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