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  1. kghost

    1971 Larson GM 250 Inline 6 165 HP

    A 143 degree stat will have a 150-160* under normal operation. Today you get 140* stat. I am not sure they still sell a 143*. Also location of sender may show higher or lower a few degrees. every boat I work on with a 140* stat runs at about 150 ish at idle and normal running rpms. After a...
  2. kghost

    1971 Larson GM 250 Inline 6 165 HP

    No one said a NEW boat. A mid 1980's and newer would be a better choice and there are tens of thousands of them out there. At least that technology level is still very much in use and parts are readily available. FYI, inline 4 cylinders Mercruisers make 140 HP in newer boats. that inline six...
  3. kghost

    1999 Mercruiser 350 Engine Tick - Rebuild or Replace?

    In my opinion, if you do a compression check and it fails, Most likely one or two cylinders have failed, Most likely ring lands have broken and possibly more damage. Lifters and cam are a secondary result of piston/ring failure. Rebuild by a reputable shop will be at least $4500+ If you do...
  4. kghost

    Exhaust shutters

    You know, You ask a stupid question when you dont give us specifics. Its means nothing to us because we are forced to ask questions we never should have to ask. Do we know what parts you ordered/purchased? Do we know where you purchased them from? Did you provide a picture of fhe parts before...
  5. kghost

    1971 Larson GM 250 Inline 6 165 HP

    I am not negative, I am realistic. Hey if you feel its fun to troubleshoot continued problems vs using the boat. Have at it..... Its all good. I am suggesting you will be fixing more than using..............
  6. kghost

    Shift Shaft Lever Removal

    This is very common on assemblies that have not been apart in decades. I have drilled them out with success and if you try this start with a smaller drill bit to get a starter hole. As you can see in the attached image, only the first 1/4" or so is threaded so that is all that will need o be...
  7. kghost

    1971 Larson GM 250 Inline 6 165 HP

    I find it very strange that one season all is good and the next, complete failure. I also doubt engine had One hour on it. The straight 6 is an antique. Not worth much today. A V6 boat has 40+ more hp and would be more repairable as parts are still readily available. Same with outdrive My...
  8. kghost

    1971 Larson GM 250 Inline 6 165 HP

    I have a question for you. If you are a new to boating, why would you purchase a boat that is 50 years old for your first boat? Do you have a solid mechanical background to troubleshoot problems? Do you have any marine/boat repair experience? Do you have a service manual to assist in...
  9. kghost

    MC1 Trim Fluid

    Do a Google search for 20W non detergent oil. You will be surprised what you will find
  10. kghost

    Mercruser outdrive

    If Alpha Drives If it is a 80's its Gen 1 type 1990 and newer is Gen 2 Visual difference is. Where the upper gear case and lower gear case connect, Gen 1 has nuts in pockets near front of drive. Gen 2 has 4 visable bolts and nuts (2 per side)
  11. kghost

    Mercruiser 350 1987 - Distributor questions IMAGES

    Point ignition?????? Lots of people have 3.0 140hp. We need your specifics.....ugh....
  12. kghost

    1990 4.3 mercruiser - power steering leak at cooler.

    Geeez...............2004 boat??? I thought most of us who help others here had older boats..................LOL............... I am still running my 1987.............
  13. kghost

    1990 4.3 mercruiser - power steering leak at cooler.

    Safe to discharge into lakes good to -40*
  14. kghost

    1990 4.3 mercruiser - power steering leak at cooler.

    Here is How I do winterization. Use it or dont, Disagree or dont, I dont care. Going on 35 years with ZERO failures This is a manual labor method with NO short cuts. Winterization for a Mercruiser V8 or V6. Note 1: My method below describes how I winterize a marine engine. I personally do...
  15. kghost

    1990 4.3 mercruiser - power steering leak at cooler.

    Here are two links Note: This is a lower pressure return line thus the hose clamp/cut hose connections at cooler 1. This web site (Item 21) Only Sierra part is available (1 1/4 inlet/outlet)...
  16. kghost

    Gear Oil Leak - What is the Cause

    Yes but it has a threaded end on the inside vs Alpha which uses the clips. The replacement parts are all brass/bronze so it a one time replacement of the transom parts. The Hose...well the new hose looks good but degrades quickly. Not sure what else to use
  17. kghost

    Gear Oil Leak - What is the Cause

    The one used on bravo is slightly different so be aware. It uses threaded fitting and nut on the engine side of transom. The one in the pic usea C/E clips and absolutely sucks to replace!!
  18. kghost

    80's Mercruiser 3.0L with obsolete distributor cap

    Thats what I did, serial number search then google the latest part number thus the LINK TO EBAY.......
  19. kghost

    80's Mercruiser 3.0L with obsolete distributor cap

    I suggest you learn how to search online for stuff. Took me 60 seconds to find this one, many others available on EBAY $25 + shipping OEM MERCRUISER It is a Prestolite type distributor https://www.ebay.com/itm/204778072061
  20. kghost

    Gear Oil Leak - What is the Cause

    Here is a link to the images in prior post for a Bravo III Square bottle reservoir. https://www.marineengine.com/parts/mercury-marine-parts-online/items.php?schematic_id=49440 I just went thru an issue (NOT specifically yours) on a Bravo 1 (they use the same components) Item 1 thru Item 5 In...
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