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  1. M

    Bad Temperature Sender ?

    1992 5.7L Mercruiser raw water cooled. new outdrive last year (although this problem was happening prior to that) My temp gauge runs up to to about 150 at idle (its a 140 T-stat) but will then runs very erratic at high RPMs. It will sometimes run up to 200 and back down to 140 in a matter of...
  2. M

    high reading on Volt Meter

    I have a 1992 5.7L Mercruiser. Volt meter typically registers about 14V when running. Last time out meter was at 14V when idleing but went to 16.5V (red zone) when I increased the RPMs past about 2000. I understand that the most likely cause of a high voltage reading is a bad voltage...
  3. M

    Max temp and proper t-stat for 5.7L Merc

    I have a 1992 5.7L Mercruiser raw water cooled engine. Currenlty has a 143 degree t-stat. I was recently told that 160 degrees is correct for that engine. Which is correct? Also, what is the maximum temperature that the engine should reach when running at max RPMs?
  4. M

    OutDrive Leaking ?

    1992 Alpha I Gen II. I replaced impleller, shift cable, gimbel and all bellows 2 years ago. Everything has been fine since. Was winterized correctly and outdrive was left on over the winter. Just strated, for the first time this spring on, muffs. All was fine for about 5 minutes then I saw...
  5. M

    skeg repair

    1992 Alpha 1 Gen II - when pulled boat out last Fall I noticed that about 2 inches of skeg was broken off. No idea how or when it happend but everything ran fine last year and prop is undamaged. Should I repair this? I see there is a product call Skegguard that bolts on to whats left ($100)...
  6. M

    correct oil level reading

    I have a 1992 Mercruiser 5.7L. When the engine is cold the oil level reading is right at the FULL line on the dip stick. After running it for a few minute the reading drops about 1/3 of the way between FULL and ADD. I know its probably fine at this reading but can I add oil to bring it up to...
  7. M

    Exhaust Tube ?

    1992 Alpha 1 Gen II. I changes out all my bellows last year. Tried to connect the exhust bellows without the special tool. At some point during last season it let go and is no longer connected (I guess I should have believed all the posting that said you must have the tool). I want to get in...
  8. M

    Thunderbolt VI or V?

    i have a 1992 5.7L mercrusier S/n OD709044 with Thuderbolt ignition. Do I have Thunderbold IV or V? I have timing instruction that Don posted for Thunderbolt V a few weeks back. If i have Thunderbold IV do I use a different procedure? THansk
  9. M

    Spark Plugs & tune up ?

    1992 Merc 5.7L Thunderbolt V8 S/N OD709044. I've owned boat 2 years. I plan to do a full tune up and would like advice on plugs to use. Engine currenlty has AC 43T plugs. At the end of last year while running at full throttle one of the plugs blew out (the porcelaine part came right out of...
  10. M

    Mercruiser shift cable adjustment

    With the help of this forum (especially Don S) I successfully replaced all my bellows, water hose, impellergimble, and shift cable on my 1992 57L. Mercruiser with Gen II. All is well and I've been having trouble free boating so far this season. One slight concern is that on 2 occasions when...
  11. M

    electrical problem.

    1992 Rinker 235 FestaVee with Merc 5.7L I/O; dual batteries with switch on both; shore power when docked with battery charger and frig on. <br />After running the boat for the day when I shut down the temp gauge often stays at whatever temp it is at (140-150). If I turn it right back on it...
  12. M

    battery replacement question

    I'm replace both of my batteries (starting and deep cycle). I have a 1992 5.7L Mercuiuser (carborated). I have battery group 24. <br />A chart that Don provided specifies a minimum 375cca 475mca and 90 ah for my engine starting battery. Do I need to meet all of these mimimums or just one of...
  13. M

    moving a battery switch

    I have dual batteries and a switch for them. Problem is that the switch is under the engine cover which is a pain in the #$% to get at when I've got a lot of people on board. I intend to move it to a near by location above the cover. At least one of the large red cables is not long enough. I...
  14. M

    Water on plugs

    1992 Mercruiser 5.7L. Bought last year and ran great. Winterized per instuctions including fogging all cyl and draining all plugs and hoses. Changed all bellows, gimble and impleller last month. Started for the first time last Saturday; it turned over in 10 seconds (amazed me). Ran on muffs...
  15. M

    Anode installation

    I have a 1992 Alpha 1 Gen 2. I was installing a new set of anodes and found that I can not install the horseshoe ones because the holes in the ends of the trim cylinders are not threaded and they seem larger than the size of the bolt that comes with the anodes. Any idea why this is? Is there...
  16. M

    Battery ??

    I have a 1992 5.7L Mercruiser on a 24" Rinker. One of my batteries has a leak and the other is almost 10 years old (although seems to hold a charge fine). I'm thinking its time to replace both. I've read a bit about having a starting battery and a deep cycle one (I have a switch). What else to...
  17. M

    Outdrive won't go on

    Its me again. I'm try to get my Alpha 1 Gen II outdrive on and I can not get it to go the last inch. Everything is lined up, I know the splines are connected because they are 3 inches long and I only need the last one inch. I suspect I still have an aligment issue but I'm wondering if there is...
  18. M

    Outdrive installation ?

    I'm about to install my 1992 Alpha 1 Gen II outdrive (first time for me. The gasket kit includes the lager gasket for the drive itself the large rubber ring that goes inside the bell housing and 4 smaller Orings. That largest of the the 4 o-rings is for water passage but I'm confussed about the...
  19. M

    Anodes installation

    I just cleaned up and painted most of my outdrive and transom plate. I am installing all new aluminum anodes. Do I need to scrap the paint off were they connect to the outdrive or will the screw/bolt secure the contact good enough so that they function properly? If I do need to scrap paint...
  20. M

    Aligenment ??

    1992 Mercruiser 5.7L Alpha One Gen II, Just replaced the gimble and all went well. Having alignment issues. I have the tool and checked it to be sure it would fit before I installed the new bearing. Front end of tool went all the way into the splines on the engine side and the bearing fit...
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