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  1. lrdchaos

    350 mag Dist cap replacement?

    As I’m reading up on the new to me 2015 350mag cat engine in my boat I keep seeing distributor cap replacement threads. I’m going to be throwing in a new set of plugs before the year starts so I thought I would throw on a new distributor cap as well. Is there anything specific I need to watch...
  2. lrdchaos

    Starbrite fuel additive for fogging?

    Anyone used the starbrite pro star fuel additive that says it “fogs” you engine? I was thinking about trying that next year instead of mixing up 2 stroke gas.
  3. lrdchaos

    Trailering clips?

    Picked up a new to me boat a couple months ago and it has trailering clips installed. I took them off for a month and the outdrive stayed up and didn’t settle, so are they worth keeping on the tilt cylinders? Do they add stress if you lower the outdrive against them?
  4. lrdchaos

    Let’s talk batteries.

    Recently picked up a 2015 Monterey 238ss with a 350mag that has a dual battery setup. It’s the manual switch that I can manually sellect 1 or 2 or both. The boat currently has two deep cycle batteries with 875cca, which should be sufficient since the 350 only required 550cca I believe. Ive...
  5. lrdchaos

    Bravo 3 prop recommendation?

    Just purchased a new to me Monterey 238ss with a 350mag and bravo 3. The current props are Mercury bravo 3, 4x3 26p that turned 5000 rpm with me and 1 other person in the boat. The water temp was 44 and the air temp was 58. The previous owner has got the prop in sand and pea gravel that roughed...
  6. lrdchaos

    Anyone use white epoxy on gelcoat crack to get through the season?

    I have a small crack on the top cap of my boat. It seems like most fiberglass shops are a couple months out which puts it into or close to boat season. Has anyone just used a small about of epoxy to hold it over until the fall so you don’t miss boating? Pic of the crack for reference.
  7. lrdchaos

    -6f. Leave the pink antifreeze in or dump it out?

    I have the -50 pink antifreeze in my engine at this time. It’s supposed to get to -6 over the weekend. It’s my understanding that the pink stuff will harden, but not expand at that temperature. What do you normally do when it gets that cold, leave it in or dump it out?
  8. lrdchaos

    350 mag bravo 3 hose diagram? Where does the large hose run?

    I’m trying to figure out my water flow in my new to me 2014 350 mag engine. For instance I poured 2.5 gallons on antifreeze into the large hose and it finally ran out my thermostat housing. Does that large hose go to the seawater pump on the lower starboard side of the engine, then to the...
  9. lrdchaos

    Mercruiser spark plug replacement question?

    Just picked up a new to me Mercruiser 350 mag. I’m looking to preform a tuneup and start fresh. I was looking at replacing spark plugs since the previous owner hasn’t changed them in a couple years. Look at the new iridium plugs, most current replacement part numbered plug, they are 18-20 a...
  10. lrdchaos

    Crack in top coat

    Question for you a friend that just bought a boat. He found a Monterey that seems to be in excellent condition, it ran good and looks great so bought it. Once he got home and started loading and cleaning the boat he noticed a small crack in the top coat. Any guess what might have caused the...
  11. lrdchaos

    Getting the water out of the block after a sea trial?

    I’m headed to go sea trial a 2015 boat on Wednesday that’s equipped with the 350 mag. It’s supposed to drop to close or below freezing that same night. How can I be sure that I got all the water out of the block? My plan, if I buy the boat, is to pull the 5 drain plugs out before trailering...
  12. lrdchaos

    Switching from a manual dual battery switch to an ACR setup.

    Picking up a new to me 2015 Monterey next week that has the manual off-1-2-both battery switch with on onboard charger that will charge either or both batteries depending on the position of the switch. I would like to eliminate the 1/2 battery switching with an ACR switch that will handle that...
  13. lrdchaos

    350 mag drain plugs?

    Does the 350 mag have 4 or 5 drain plugs to drain the block?
  14. lrdchaos

    Winterizing 350 mag?

    If in remove all 5 drain plugs, let the water drain then put the plugs back in, and start the engine with muffs attached to a 5 gallon bucket of antifreeze while fogging the motor will that get the water out of the engine and fog the engine at the same time?
  15. lrdchaos

    2015 350mag known issues?

    Going to look at a 2015 Monterey 238ss with a 350mag/bravo 3 with 142hours on it. Are there any known issues with the 350mag?
  16. lrdchaos

    377 mag opinions?

    I’m in the market for a boat and found A 2015 with a 377 mag That has 95 hours. Are there any major issues with this engine? I had a 5.0mpi for 12 years that had little to no issues, so I’m not new to boats or mercurisers, just this engine.
  17. lrdchaos

    Thermostat operation question....

    Probably a basic question but I’m wondering about the thermostat on my 5.0mpi. According to my gauge it opens somewhere around 170ish maybe 180, when it finally opens does it stay open all the time while running or will it open and close?
  18. lrdchaos

    2006 5.0mpi starting a beeping issues.

    3 years ago we had to replace the engine coupler, the shop replaced the coupler and it seemed to run fine for 2 trips. We didn’t use the boat last year due to a new baby, 3rd trip this year we have developed an issue. Normally when you turn the key you hear a beep, now when you turn the key...
  19. lrdchaos

    Engine coupler saga....

    So the end of July I hit something running across the lake, broke the tip of the scag and scratched the lower unit. 2 weeks later the Engine coupler went out. Took the boat into the shop around the 12-13th of August. I called today and he said that he had to order more parts. I guess when he...
  20. lrdchaos

    Could a lower unit impact cause a coupler failure?

    2 weeks ago my wife hit something while dropping me off near the ramp. What she hit I have no idea, but it scratched the lower unit and broke a couple inches off of the tip of the scag. Everything seemed to run right until this weekend when my engine coupler failed. Can a lower unit impact...
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