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  1. incrediblened

    Shaft seal replacement - drive oil in outdrive intake grate... easy fix?

    I lowered my outdrive to start it for the first time this season. Outdrive oil ran out of the impeller intake grates. I pulled the lower half of the outdrive off. it appears that oil was leaking out the main shaft seal. I know that the old models used to have the rubber o-ring on the shaft...
  2. incrediblened

    1990 Mercruiser V6 Heads vs. OMC Heads

    I was wondering if the 4.3 V6 heads were virtually identical on the Mercruiser and OMC. A couple of years ago a guy sold me "Mercruiser" heads to put on my motor. Well, my Mercruiser valve covers (center bolts) didn't fit, so I asked him for the valve covers that went with the heads...
  3. incrediblened

    New engine break-in popping in exhaust - 1992 Mercruiser 350, 4bbl

    I just installed a new remanufactured marine 350 motor in my 1992 Sea Ray. I've got the engine timed at 10'BTDC at idle. It starts and runs and I'm in the 10 hour break-in period. I'm noticing some popping in the port side exhaust. Do I have a valve set too tightly and maybe I'm getting...
  4. incrediblened

    Crate Engine - Distributor Intermediate Shaft

    I bought a new 350 short block, and now it's bolted in the boat. I wanted to prime the oil pump from the top of the engine, and I see that my distributor is WAY too short to reach the oil pump. Am I missing an intermediate shaft? Can it be put in from the top?
  5. incrediblened

    Starter issue... Strike One... Strike 2...

    I've been troubleshooting the starter in my 1997 4.3lx Mercruiser boat. Long story short I get the "click". I checked the battery, checked for water in the cylinders, engine is not stuck, I put a hi-torque starter on it and it rolls over slow, Then I tried a new starter. Nothing. Strike one...
  6. incrediblened

    351 Windsor Engine finding a new home.

    I found a deal on a boat. $400 for a 1975 mercruiser boat with a 351w. Anyway, he now wants the trailer so I'm buying the motor for $200. Is this a better motor than what you would find in most 351w cars from 1975? Does anyone know if a 351w is the same throughout the years. Thanks for...
  7. incrediblened

    1991 Mercruiser V8 Blowout (the bad kind)

    My brother brought me his boat from Dallas. "Check it over, I think it leaks a little water in the bilge when it runs." I started it up and it leaks so much water in the bilge that none comes out the exhaust. lol. 1991 Sea Ray Mercruiser 5.7 I found a used and complete 1996 Mercruiser...
  8. incrediblened

    Warm water in bilge

    Hey, I've recently discovered that my exhaust tube is leaking water. I assume that the bolts worked themselves out and the exhaust tube is loose. Does this require an engine pull to repair? 1997 V6 gen+ Maxum ski boat
  9. incrediblened

    Shift Interrupt Switch

    My boat feels like it's intermittently losing power. I diagnosed the problem to be the shift interrupt switch. It's engaging/pushing the button when it's not supposed to. Is this a common problem? How do I fix it. Thanks! Ryan
  10. incrediblened

    I'd rather do boating in the lake rather than in my garage... (ignition question).

    A couple of years ago I parked the '79 Chaparral in storage. I got it out today to get it started and out on the water. It won't start. It turns over, no spark though. Mercruiser 470, Petrtronix Ignition Installed. 1) Positive lead on coil = 8.5 v. 2) Positive lead on battery = 10.5 v...
  11. incrediblened

    Reverse Prop - no forward gear.

    I got a screaming deal on a new stainless mercury vengence prop. $100! Unfortunately, when I put the boat on the water I realize that it was a reverse pitch prop. Well, since I was already on the water and the kids were suited up in their life jackets, I got to thinking... the forward gear...
  12. incrediblened

    I've got a major problem

    I winterized the boat a couple months ago and covered it up for the winter. I just went over and checked on it, and I'm pretty sure I've got problems. 1) I lifted up the cover and smell gas. 2) I look at the bow, and there's frozen water in there. 3) I go to look at the bilge plug AND...
  13. incrediblened

    Mercruiser 140 vs. 135

    Hey, could someone give me some of the differences between a 1985 Mercruiser 140 engine and a 1995 Mercruiser 135. I might buy a 1995 boat cheap that has a cracked block and put in the 140 block with the newer components. Will it bolt right up?! Thanks, Ryan P.S. My left muffler bearing was...
  14. incrediblened

    EZ Question for the guy (or gal) who knows.

    I busted my spedometer tube when I separated my outdrive. Any idea what that little plastic threaded piece is that screws into the lower unit? 1994 Alpha One Outdrive.
  15. incrediblened

    QUICK EZ QUESTION - Regarding Rocker Arm Nuts

    Would you use thread lock when you install the rocker arm nuts? The manual doesn't call for it, but I want those suckers to stay in place! :) 1997 Mercruiser 4.3, Vortec, 20ft/lbs torque on rocker arm nuts + thread lock?
  16. incrediblened

    My Muffler Bearing Finally Went Out

    As you can see, by picture of my gauge (see profile pic), my left muffler bearing has definately failed. I couldn't find them here in the iBoat store. Should I just buy one off of eBay? How long will my boat last without it being repaired?
  17. incrediblened

    Loss of Power - Fresh Head Install

    I just put the boat on the water. It started off great, we cruised for about 1/2 mile, and all of a sudden we lost power. I just installed new head gaskets. I haven't checked compression yet, but I'm thinking one of the new head gaskets blew. Any quick thoughts before I jump in to the...
  18. incrediblened

    4.3 Mercrusier Cracked Block Swap-Over

    Hey Friends, I picked up a 1997 Maxum with a cracked 4.3 recently on Craigslist. I've got a great 1987 4.3 that only has 200 hours on it. Anyway, I was wondering if someone could just give me some points of note concerning fitment of the old block & components (etc) in the new boat. Here's...
  19. incrediblened

    Aftermarket Thermostat Shutdown

    Does someone sell an aftermarket thermostat kill-switch? I've got a boat that I'm renting out, and I want the engine to shut-down the temperature goes past a certain point... say 180 degrees. 1994 Mercruiser 135 HP 3.0, Stern Drive
  20. incrediblened

    So close to the lake... Yet so far away

    Hey everyone. I am so close to getting my 1990 Maxum on the water that I can feel the spray of water in my face. :) Today I got the engine started and running. After about 20 seconds of running I see milkshake coming up from the lifter rods. I expected this. The PO ran it hot, blew a...
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