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  1. S

    Rebuilding or replacing Mercruiser 4.3 in 1996 caravelle 1950SE

    Will do. Should have it tested by tomorrow afternoon, thanks again.
  2. S

    Rebuilding or replacing Mercruiser 4.3 in 1996 caravelle 1950SE

    Really appreciate all the comments and help so far!!!
  3. S

    Rebuilding or replacing Mercruiser 4.3 in 1996 caravelle 1950SE

    Appreciate the bolt tip, I am not one to force things and break them, but I’ll use the strap wrench. Thanks for fault finding tips too, I’ll try them all to be sure before I pull the engine out, but I’m doing my research early on strong evidence. I myself haven’t confirmed a cracked block...
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    Rebuilding or replacing Mercruiser 4.3 in 1996 caravelle 1950SE

    Great, thanks for the sizing info. Thanks for tip on crank bolt - I’ll avoid that, but can you tell me specifically why? Just that I’ve seen engine guys over here use a big 3/4” ratchet to turn the crank pulley to rotate and work lube in cylinders prior to firing up an engine laid up for years...
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    Rebuilding or replacing Mercruiser 4.3 in 1996 caravelle 1950SE

    Thanks. If block is cracked and I go long block plus manifolds, I am assuming the rest of the engine will swap over ok, if I buy the right block? Any company in particular to look to get a block from? I’ll replace anything that doesn’t look reliable, eg hoses and wiring as required - is there...
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    Rebuilding or replacing Mercruiser 4.3 in 1996 caravelle 1950SE

    Yes, I’m heading out this weekend to check: fuel supply to carb, Fuel pump pressure, carb working ok and run with new fuel off a portable tank plus spark at plugs, new plugs if required Compression I’ll change oil prior to this and replace fuel filter too.
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    Rebuilding or replacing Mercruiser 4.3 in 1996 caravelle 1950SE

    I’ll definitely use a machine shop for testing and machining, plus advice. But if I go new block and keep the 4.3 I’ll be doing almost everything myself unless totally impossible without serious/specific tools and machines. I’ll have to buy some kit/tools but I’ll save that cash in paying other...
  8. S

    Rebuilding or replacing Mercruiser 4.3 in 1996 caravelle 1950SE

    On the 19ft caravelle? Not sure I need the extra power, or have space? Is cost similar and are parts transferable do you know? thanks again
  9. S

    Rebuilding or replacing Mercruiser 4.3 in 1996 caravelle 1950SE

    On the 19ft caravelle? Not sure I need the extra power, or space? Is cost similar and are parts transferable do you know?
  10. S

    Rebuilding or replacing Mercruiser 4.3 in 1996 caravelle 1950SE

    Thanks, great info, appreciate the detailed reply! I’m not overly worried about top end speed/power, So a 4.3 might be the easiest. I can move mounts and do Fibreglass work, so if I have the space I guess 5.0 will be more popular when I eventually sell it after I’m done with it...
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    Rebuilding or replacing Mercruiser 4.3 in 1996 caravelle 1950SE

    Thanks, and thanks for the quick reply! Of course, before trashing it I am going to test fuel/spark and work backwards so I can run it or recreate the failure the seller said he had. I have the ability to do that no problem. The specifics of these engines however and the costs of parts, I am...
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    Rebuilding or replacing Mercruiser 4.3 in 1996 caravelle 1950SE

    Hi, I think this is quite a specific ask - sorry if it's been answered before, and thanks in advance for any help or comments, no matter how blunt... I Just bought a 1996 caravelle with Merc' 4.3 and alpha one, with a dud engine but decent drive and good hull. Seller said it was cranking and...
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