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  1. AShipShow

    Mercruiser 496 MAG Refresh Thread

    Oops, haven't been here since early December... I ended up receiving the new heat exhanger from Lenco and it looks like really good quality.. It was a lot heavier than the OEM heat exhanger.. not sure if thats any indicator of quality though. Ended up getting it installed with a few minor...
  2. AShipShow

    Mercruiser 496 MAG Refresh Thread

    Welp, got a no-go from 2 of the 3 radiator shops, so assuming the 3rd is going to be the same, I decided to just pull the trigger on a replacement.. Ended up calling Lenco and spoke with the owner... I've read good things about them and coincidentally was the best price I've seen so far.. I...
  3. AShipShow

    Mercruiser 496 MAG Refresh Thread

    Yea, thats what was confusing, it didn't matter the serial number, it just showed the new PN.. Usually it will say the original PN and then what supersedes it.. Anywho.. this is the original 3.5" version and you can see its replaced by the 4"..
  4. AShipShow

    Mercruiser 496 MAG Refresh Thread

    Well I tried my hand at silver soldering the easiest one I could get to with really no luck... Not sure if I didn't get it clean enough or whats going on but I couldn't for the life of me get the solder to wet out to the tube.. It should have been clean enough. Most likely wasn't able to get...
  5. AShipShow

    Mercruiser 496 MAG Refresh Thread

    No, one almost in the center and one out near the perimeter but in one.. the one near the center will be a real PITA if I try to fix it.. not much access to wire brush it or even get a dremel or anything in there
  6. AShipShow

    Mercruiser 496 MAG Refresh Thread

    From what I can tell it seems like the tubes
  7. AShipShow

    Mercruiser 496 MAG Refresh Thread

    🤬🤬🤬🤬 Well, the pile of problems continues to get larger faster than I can take care of them... Just discovered two of the tubes in my heat exchanger are leaking.. I've seen mixed reviews on repair vs replace.. The mercruiser manual actually states that you can plug up to a certain number of...
  8. AShipShow

    Mercruiser 496 MAG Refresh Thread

    Found something weird today... the mercruiserparts dot com diagram doesn't have any of the exhaust y pipe components.... I found out that the coupler from the elbow to the y pipe on the port side is delaminating internally so I'm going to replace both.. However, it uses wet exhaust hose, not a...
  9. AShipShow

    Mercruiser 496 MAG Refresh Thread

    No... Hard to say with the boat sitting 3 years... My assumption is just rain water because I think the boat was out of the water on the trailer for about 3 years so probably no battery and or working bilge pump... You'd think they would pull the transom plug though. Either way, got it all...
  10. AShipShow

    Mercruiser 496 MAG Refresh Thread

    Yea I know.. My previous 20' bayliner was a 30 minute job to get the motor out and I've pulled the motor just to give the bilge a good cleaning... but my new situation, my gantry is 14' tall and the motor BARELY clears the cockpit.. its sort of integrated into my temporary boat shed in the...
  11. AShipShow

    Mercruiser 496 MAG Refresh Thread

    I'm back again, got the pulley thing straightened out (no pun intended).. I wasn't able to fix the old pulley as much as I tried, and even the hardin marine pulley kit didn't fit right so I must have won the lottery of in-between weird years from Mercruiser.. I ended up having to turn down the...
  12. AShipShow

    Mercruiser 496 MAG Refresh Thread

    I'll have to give the pot-belly route a shot... I don't think the arbor press route will work because its not warped like a potato chip, its more that the angle of the bore of the pulley no longer perpendicular to the plane of the pulley. If it put i on a flat table, there aren't any raised...
  13. AShipShow

    Mercruiser 496 MAG Refresh Thread

    Back again with more confusion... I'm an idiot and removed my power steering pulley with a 3 jaw puller before finding out that thats a terrible idea and you need to use the PS puller that you can rent from autozone/etc.. So after reinstalling the pulley and checking my alignment, I realized the...
  14. AShipShow

    1987 Power Play XLT-185 - floors, stringers, and upholstery

    You're telling me... I just bought a boat on a triaxle aluminum trailer with EOH brakes and the actuator is bad... The actuator alone is $800 :sick:
  15. AShipShow

    Suggestions on LongBlock Supplier

    If yours is the vortec 4.3 then your actually much better off trying to find a lower mileage one at a salvage yard since they used those engines for quite a while. If its pre-vortec, your gonna have a hell of a time finding one in "worthwhile" condition.
  16. AShipShow

    Mercruiser 496 MAG Refresh Thread

    OK, so no worries over like shear forces on the bolts or anything? I'm assuming not simply because from what I can tell, the dowel pin is a spring pin anyways, not solid, so it couldn't really provide much rotational resistance anyways.
  17. AShipShow

    Suggestions on LongBlock Supplier

    Yea, Michigan Motorz is going to be the default answer because they have a really good reputation. Interesting that Atlantic Marine seems to have a better warranty on reman though.. You might want to study both warranties though to see if there are any weird loop holes. Honestly if it were me...
  18. AShipShow

    Mercruiser 496 MAG Refresh Thread

    Hi to all the Merc experts out there... I'm in the process of giving my new-to-me 496 MAG (0W358880) a good once over since I have it out of my boat. I figured instead of creating a bunch of new posts whenever I come across something, I'd just start a general thread that I can ask the questions...
  19. AShipShow

    Replacement Exhaust Manifolds for Merc 496

    @Bondo I can't believe they haven't made you you're own "ayuh like" button by now :ROFLMAO:
  20. AShipShow

    Replacement Exhaust Manifolds for Merc 496

    I'm neither lol... The hailing port on the boat is Washington DC (but that could be anything, doesn't mean where it was used)... The boat was stored in Occoquan, VA, maybe 20mi down the potomac from DC, but still quite a ways up from the mouth at the chesapeake. Edit: I just found a...
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