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  1. ktbarrentine

    Bad Seal/O ring or gasket Alpha gen 2 drive?

    See if this pdf attachment comes through. Is this the piece you are referring to? ​ (if the attachment is not clear, do a google search for mercruiser service bulletin 91-25)
  2. ktbarrentine

    Three injured in boat engine explosion today: Lake Pleasant AZ

    Keep these three fellow boaters in your thoughts and prayer tonight.. Still in the burn unit after the engine compartment exploded just after launch at the 10-boat ramp at Lake Pleasant, AZ. Preliminarily attributed to fuel vapors accumulating in the compartment. Make me wonder if they had...
  3. ktbarrentine

    Question on "water injestion" during flushing with muffs

    Just read a thread about flushing an Alpha sterndrive that referenced service bulletin 99-9 (http://forums.iboats.com/attachment.php?attachmentid=155373&d=1340979368). It discusses not running engine at idle while flushing w/muffs to avoid "water ingestion". Question: what is water ingestion?
  4. ktbarrentine

    Mercruiser Alpha-1 trim tab anode (Flat) installation question

    Based on a previous thread (http://forums.iboats.com/showthread.php?t=557939) about trim tabs, and since I have power steering on my boat, I am switching out my outdrive trim tab anode for a flat version. The two that I have found indicate they are 1. zinc alloy, for saltwater only, and 2...
  5. ktbarrentine

    Alpha 1, R, or MR?

    I just read in another post (reply by Achris) (http://forums.iboats.com/showthread.php?t=560534)that the drive in question, although reported as a 1988 Alpha 1, looked to actually be a 83-84 vintage "R" lower because of the o-ring at the top of the vertical drive shaft, and the squared anti-cav...
  6. ktbarrentine

    Best size battery for 1990 5.0L Mercruiser?

    Living in central AZ, batteries don't typically last very long (couple years, give or take). Mine seems to be on its way out, and the temps are climbing, So I am looking for a new one. I currently have a group 24M, 500 CCA Die hard deep cycle marine battery. Just curious if this is the...
  7. ktbarrentine

    Engaging Prop while on Muffs

    Just curious.... I've been told never to engage the prop (fwd or rev) when testing/running the I/O on muffs, so I don't. I do test my shifter with the engine stopped (and key out) by checking prop rotation (by hand) when shifter is in fwd or rev. I test the shift interrupt at the lake as part of...
  8. ktbarrentine

    Aftermarket fuel pump for Mercruiser 5.0L. Lessons Learned!

    After a beautiful day on the lake yesterday, came home and tried to fire up the boat on the muffs... Ran out of gas! (but.... I had just filled the tank at 3.69/gal. Yikes! That's a story for another thread). Troubleshooting isolated a bad fuel pump. Trouble is, I just replaced this pump 7.5...
  9. ktbarrentine

    New thread on Alpha-1 grease fittings

    Just saw a new post on an old thread about greasing the "zerks" on an alpha-1 and it reminded me of a question I had, but hadn't asked yet. I recently purchased a 1990 Alpha-1 on a mercruiser 5.0L. Following the guidance of my service manual, I have greased the trim hinge bearings, the gimbal...
  10. ktbarrentine

    Bearing Buddy Spindle Seal Kit installation

    Anyone have experience installing/using the stainless steel spindle sleeves produced by Bearing Buddy? Their website claims that the kit included service and installation instructions, but my kit did not include this, and I have not been able to contact the company for further instructions...
  11. ktbarrentine

    Spark plug type - quick question

    Recently purchased a 20' runabout with a 1990 Mercruiser 5.0l and Alpha 1 outdrive. Noticed the engine manual calls for MR43T plugs and I see that alot in the forums. I pulled my plugs to inspect/change and they are MR44T, so that is what I put back in. Boat runs good. Mostly run it in central...
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