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  1. K

    1987 340 MERCRUISER 454 CU IN

    is there any chance of water infultration from when you stopped to drop anchor ?
  2. K

    testing for leaks with smoke

    I caught a video on youtube, it seems the smoke works alot easier . Has anyone tried it ?
  3. K

    marine plywood as thru hull backing plate ?

    is 3/4 marine plywood ok to use as a seacock backing plate ?
  4. K

    maint. on shutters

    How does that work, does it go out the sides ?
  5. K

    maint. on shutters

    how long do shutters last ? I mean before they break apart and wind up down in the Y-pipe. I just finished grinding and shaping the top of the Y-pipe so the shutters can work properly. Now I'm wondering how long I should wait before checking or replacing them
  6. K

    dual water supply

    the outside flange seems to ride a little on the support or maybe the boat isn't sitting perfectly center, this is the thru-hull for the waste water, it's 1.5" id . I have to replace the valve cause it won'T close. Does anyone use those overboard ports ? Cause I was thinking about using that one...
  7. K

    dual water supply

    you must of seen my boat on the trailer, the thru-hulls sit right on a bunk support
  8. K

    dual water supply

    OK I didn't see the part about cutting the hose, why wouldn't you want both ?
  9. K

    dual water supply

    If it doesn't have a place to go there won't be any flow
  10. K

    dual water supply

    Why don't you want to go thru the transom ? Mostly all high speed boats use this method . I don't want to loose anymore floor space to be able to move around in that bilge, if you are running with the transom supply blocked off which is what I wanted to do but mercruiser advised not to because...
  11. K

    dual water supply

    how will water go thru the drive if you are cutting off the suction from the pump ?
  12. K

    dual water supply

    I want to add a thru-transom watersupply but as mercury has advised me to keep the one that goes thru the outdrive, because it cools the outdrive. has anyone had any experience with this plumbing, I mean can I just come off the back of the transom exsisting supply and tee in at the thru-transom...
  13. K

    Overheating with closed cooling system???

    replace return hose with clear hose to see flow, use laser temp gauge to check risers and other points, these are all low cost methods, you can get everything you need at lowes, fwc systems are tricky to trouble shoot, take one thing at a time, good luck, do you have a strainer between your raw...
  14. K

    Heat Exchanger Question

    yes you are probably right, but you still have to pressure test both sides of the exchanger, also was it a rear installation ?
  15. K

    Heat Exchanger Question

    was that x-changer part of a full system or half ? you have to pressure test it, both sides why are you just going to use it for a half system, you know as well as I that if there is a problem it most likely comes from the exhaust failing, too bad they don't make dry joint exhaust for big...
  16. K

    torque non adjustable rocker arms on 7.4L gen v

    The info that I'm seeing is just put it back together and torque it to 40 lbs. , is it really that simple ? it doesn't matter where the cam is, in other words, when you go to do this all the the valves are closed, and it doesn't matter where the lifters are in relation to the cam lobe ? If that...
  17. K

    what head gasket to use ?

    thank you so much hawk,yes I have read this , it was one of more informative reports that I found, I wish I had all this info before I bought this engine or for that matter before I bought this boat. where you from hawk ? I'm in south jersey, Thanks again, Kevin shoot me some info on how you...
  18. K

    1990 454 / 7.4 Mercruiser Oil Capacity

    What is the serial number ? Alot of people are having the same problem that you are. There are alot of ways to identify your engines and you will have to come tune-up time, and don't think that because it is on there now that it is correct, make your own conclusions. #1. take the valve cover off...
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