• If this is your first visit to the iboats.com Boating Forums, be sure to check out the FAQ. To post a question or comment, begin by signing up. To start viewing messages, select the forum that you want to visit from the selection below.

Announcement

Collapse

Help Tip: If you have a question that has not been answered to your satisfaction in the archives, it is always best to start a new thread of your own. By starting your own thread, you will receive the maximum number of views by forum members.

Below are some additional forum policies in hopes of all iboats members will follow, Thank you.

1. Please do not reply to old topics or hijack existing topics. Old topics of a technical nature are like a library book, Please do not write in them.

2. Old topics should be considered archives and used for reference only. Please do not reply to them.

3. Do not take over someone elseís topic (aka hijack) with your own question, even if it is similar. If you have a question that has not been covered to your satisfaction in the archives, it is always best to start a new topic of your own.

4. If you have a question for the original poster (OP) and the topic is over 30 days old, send the OP a PM, he may not even visit the forums any longer, or may not notice your question in the old topic.

5. By starting your own topic, you will receive the maximum number of views by forum helpers that may not even notice your question when itís posted at the end of someone elseís topic. And those answers will be specific to your particular issue.

6. Please do not post to topics that have been inactive for more than 3 months unless you are the original poster. We have very active forums and any topic that remains inactive for that long should be considered "dead". It is especially confusing when there is an entirely new question posted to an old topic.

7. Posting at the end of any topic is considered to be hijacking the original posters topic which in turn subjects the topic to be closed if it continues to happen thus not making it fair to the original poster in the future had for some reason he/she needed to return for additional information or provide an update of the problem solved which is always welcomed within a reasonable amount of time frame.

8. Please note that you should see a red banner pop up near the bottom of each inactive topic asking you not to reply to old topics. The Red banner will read: Please note this topic has been inactive for 90 days. For the best results, please start a new topic.

Thank you all in advance for doing your part in helping iboats run a smooth ship.

Additional forum rules linked below.
http://forums.iboats.com/forum-rules-guidelines-405/
See more
See less

Winterization of a Mercruiser 496 MAG High Output Engine

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts


  • Winterization of a Mercruiser 496 MAG High Output Engine

    Thanks in advance for helping with this question. We are considering purchasing a larger boat that has a Mercruiser 496 Mag High Output engine. We currently have a deckboat with an Mercury Outboard motor and love the fact we can go out, even during colder months. We live on a large lake hosting large boats and cruisers and feel it would be safer to move into a larger boat. The salesperson for the boat we are considering insists that the Mercruiser 496 Mag High Output engine with the air actuating water release will solve our dilemma about moving from the convenience of an winter boating with an outboard.

    We are a bit apprehensive about this since the Mercury website says the warranty won't cover any cracked engine blocks due to lack of proper winterization.

    Before we make this big jump to a much more expensive boat we want to be sure we can safely use the quick release winterization feature of this engine and go out all year round.

    Can anyone give us their opinion based on experience with this motor??

    Thanks-wtdia


  • #2
    Sign up today
    Re: Winterization of a Mercruiser 496 MAG High Output Engine

    I wouldn't expect that system to work except during testing. It's scarry.
    If you want to boat all winter, get a FWC system installed and drain the raw water side of the heat exchanger, manifolds/risers, and raw water pump (Bravo drives) and make sure nothing is clogging the drains. That is fairly easy. With a raw water cooled system you also need to drain the block. And that can get real hard to get to on todays engines with MPI.
    Don S.

    sigpic

    Please, no PM's (Private Messages) regarding boat/engine problems.
    That is what the forums are for.
    Only forum/moderator issues will be answered in PM's.

    Comment


    Working...
    X