Recent content by chriscor

  1. chriscor

    Skip Drive Impeller in Full Closed Cooling System?

    Dear All, I am running a full closed cooling system (2005 4.3 MPI) with the motor mounted water pump. Drive is an Alpha One Gen II. (water hose cut by manufacturer). May I leave out the Impeller in the Drive? Is there enough water flow to cool the drive without the Impeller attached? Thx...
  2. chriscor

    Whirring Trim Pump (with audio)

    I have an Alpha One Gen II with a Trim Pump starting to make screaming noises. The whirring starts with trimmig up until trailer position. Down sounds ok to me. Here is the audio: First 4 sec. is "up" with the whirring 4-8 sec. is "down" (ok): VID_20130804_153204.mp4 - YouTube Fresh oil, no...
  3. chriscor

    Shift Cutout Switch Roller Position

    Hi there, I have an Alpha One Gen II with a later type switch. In Neutral the plunger pin is not centered (see pic.) - drive is shifting fine. I have checked the shift cable routing, the adjustable stud and the shift cable output according to the manual. Everyting is ok. Is this an issue? If...
  4. chriscor

    Alpha One GEN II: Smashed Wear Pads

    Hi there, I just smashed both wear pads (No. 7) while trying to re-install the outdrive. Do I need to replace them prior to re-installing the drive or, afterwards to prevent them from getting smashed again. Beside, why are they there:confused: Thx
  5. chriscor

    Changing Lower Shift Cable Alpha One Gen II: Gimbal Housing Eylet?

    Hello, Just wondering where to put the the "Gimbal Housing Eyelet" enclosed in the new shift cable set:noidea: Can not find anything in the drive manual about it. Thx
  6. chriscor

    Changing Thermostat 160-->170: Draining entire system?

    Hello, I am running a Merc. 4.3MPI from 2005 (0W384629) with a closed cooling system installed. I'd like to change the thermostat from 160 (which I assume is being installed according to smartcraft values showing up) to a 170 Degrees Fahrenheit one. The boat is not being used in salt water. Do...
  7. chriscor

    Checking engine mount for tightness and retorquing

    Re: Checking engine mount for tightness and retorquing As I have non inch sockets here just want to know prior to buying...:
  8. chriscor

    Checking engine mount for tightness and retorquing

    Was wondering what size of socket do I need for a Mercruiser 4.3 MPI from 2005?:confused: Thank's
  9. chriscor

    Sceaming Trim Pump

    Any ideas on this? I have a 2005 4.3 MPI with an Alpha One Gen II (Model 5121300TS /1998). Trim is working fine in both directions but with a screaming noise (only) triming up. I have changed the oil in the reservoir. No indication for water intrusion. Filled up with new Mercruiser Trim Oil and...
  10. chriscor

    Impeller Housing Merc. brass seawater pump: Replacement needed?

    Re: Impeller Housing Merc. brass seawater pump: Replacement needed? Just want to report back: Brought the housing to a local grinding shop (pic. enclosed). They put it on a precision grinding machine taking away all the groves and a nice flat surface is back. Of course, a few milimeters are...
  11. chriscor

    Impeller Housing Merc. brass seawater pump: Replacement needed?

    Hello! Just coming back from disassembling my Merc. brass seawater pump (Part-No.: 862914) sitting on a 4.3 L MPI from 2005. While the impeller itself is in perfect condition the impeller housing plate is showing some concentric grooves (pic. enclosed). Would you recommend a replacement...
  12. chriscor

    Closed Cooling System & Impeller in Lower Unit

    Being a Newbie, just trying to better understand my motor/drive configuration: My boat is equipped with a 2005 Mercruiser 4.3 L MPI with an Alpha One Gen II drive attached to it. It is a closed cooling system on board getting it's raw water from a through hull water inlet. The seawater pump is...
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