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  1. M

    Mercruiser 470/165/170/3.7l starter studs

    Are the two studs that hold the starter on THREADED in or PRESSED in?
  2. M

    470 head gasket

    Hi all, Once upon a time, when everything on the engine was cast iron, I would put in a head gasket, go for a drive, then when the engine was cooled back down (normally next morning) I would re-torque it. Then possibly again after a 100 miles or so. I am getting ready to light off my Merc 470...
  3. M

    Mercruiser 470 Proponents - cylinder head question

    I'm working on freshening up a 470. I need to replace the cylinder head. I have a few new Ford 460 heads left over from a truck project. Has anyone installed the water outlet in the end of the head themselves? If so what did you do? I have thought about drilling and tapping for a pipe...
  4. M

    Echotec Fathometer

    Hi All, The boat I acquired came with an Echotec CV550, video sounder. It works and tracks the bottom quite nicely. Does anyone have a manual for one of these relics? From what I have found, Echotec has been gone for some time. Thanks
  5. M

    Only Backfires on cold start

    Twin 1984 Mercruiser 470s with alpha 1 drives -info for both engines- *Compression good/even - starboard engine 140,138,140,140 port 134,132, 135,135 *New plugs properly gapped per factory manual *New cap, rotor, points, condenser *Point gap/dwell set per factory manual *Timing set per factory...
  6. M

    CLR and outdrives

    I have a couple of mercruiser outdrives that have been neglected in saltwater. Has anyone used CLR or other calcuim removing cleaner to clean the marine growth off? (I have used muratic acid on bronze propellers with good results) I would would rather dissolve it if I can rather than...
  7. M

    SyTen Helm Pump Leak

    The boat I am refurbing came with a Syten hydraulic steering pump. The steering works fine except that there is a leak out the shaft that the wheel mounts on. Not only was fluid getting everywhere, but a full days use required fluid to be refilled. After finding out that there is not support or...
  8. M

    Twin outdrives and rotation

    We just became owners of a VERY neglected boat. Twin I/Os in the salt water for about 3 years...the drives are TOAST. This is my first twin I/O. All of the twin inboard boats that I have run have had counter rotating props. Great for walking and maneuvering (45' to 100' crew/supply...
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