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  1. Scott06

    How to tell what carb I need?!?

    Who ever told you that is a 2 bbl is wrong. Thatis a 4 bbl Rochester Quadrajet. good news is properly rebuilt and set up it is a very good carb, dont get fooled by the quadrajunk, quadra bog or other comments you may see. start with the basics check compression, look-at what comes out of the...
  2. Scott06

    Merc Alpha4 no longer available. What to replace it with?

    I ran an offshore ( I think they also called it vensura at one point). Worked very well, especially on holeshot for watersports. I had a fair amount of slip with it on the top end and wouldn't stay hooked up with more than 1/4 trim out. The results you outline are exactly the reasons I...
  3. Scott06

    VIDEO Help: Post Texas Freeze Leak

    With cracks like that i bet your block is toast too. Look below the manifolds on the sides of the block i suspect you will find similar cracks there. If none visible, before you put any money into any tube up or oil change items, Run it on the hose let it get good and hot. Look for water...
  4. Scott06

    Hydrolocked in the parkinglot

    Yes you likely broke the seal on the plug. i believe there are two set of passages in that part of the drive. One is cooling water through the drive and into the bellhousing and then up to the engine. The other one is the gear lube up from the lower half. Normally these passages are made by...
  5. Scott06

    Exhaust manifold tap size

    Not sure what engine you are working but assuming it is chevy based ...3/8 -16 i believe. A bottom tap helps you get farther into blind holes so i generally buy these when getting a tap
  6. Scott06

    Hydrolocked in the parkinglot

    This is the correct answer i wouldn’t go hammering it as mentioned by OP. Like in a carb there are passages that are drilled after casting that have welch plugs in them to block them off where needed.
  7. Scott06

    VIDEO Help: Post Texas Freeze Leak

    Is it worth replacing the motor? Probably if the rest of the boat is in reasonable shape. Cost for a remanufactured long block is about $2500, labor low side =$1500 . So a reman long block all in could be $4-5 k up to $11 k if you get a mercuiser bobtail installed at a dealer with a 3 yr...
  8. Scott06

    How to tell what carb I need?!?

    I believe you are correct that the 350 mag should be a 4 bbl, but i think in yiur video it is showing a rochetser Quadra jet which is a 4 bbl. to be honest the video was not too useful as the camera was flopping all over the place . if you post just a close up of the carb and manifold it would...
  9. Scott06

    Mercruiser 3.0 strange sound at low end acceleration

    I wonder if it is detonation. Id see if the spark plugs look lean, you can find some photos by goggling how to read spark plugs. If they are looking lean set the ignition timing and check fuel delivery, fuel filter verify fuel pressure and rebuild carb
  10. Scott06

    New here and need help

    Here is the prop selector for merc that can help you. https://www.mercurymarine.com/en/us/propellers/selector/#!/step-one As mentioned you can get it fixed either locally or on line via mail like at prop MD. But id doesnt hurt to have a spare in case you hit something while out on the water...
  11. Scott06

    Volvo penta stern drive longevity

    True statement have yet to see the mechanicals wear out with basic maintenance and occasional seal replacement
  12. Scott06

    Merc 5.0 TKS Heat Issue

    The alarm circut is triggered of a temp switch on the thermostat housing tan blue wire going to it. Its in parallel to oil pressure switch and drive lube sensor. Any of those three sensors go to ground to trip the alarm. Easy to test one by one. Unplug them when alarm goes off. Verify temp...
  13. Scott06

    Question on fuel

    I suspect if you had to do multiple or frequent carb rebuilds there was contamination of the fuel tank that continued to dose problems into the carb or the carb cleanings were not successful in completely cleaning the carb. Im not throwing you any shade, as Ive had plenty of issues rebuilding...
  14. Scott06

    4.3 Mercruiser cold start issues

    Pretty well known issue with hot rod folks here. My coworker has a holley on his 69 firebird, doesnt even try to start it in the spring without replacing the float bowl gaskets because of leaks. The one piece fuel bowl and no power valve blow out issues are two real advantages of the Edelebrock
  15. Scott06

    1989 5.7 Mercuiser exhaust plugged

    Freshwater they generally dont corrode, but could have debris in them. Would open to inspect the water passages. Also possible that if the water pump impeller disintegrated there are pieces of it clogging water flow, especially in thermostat housing . folks here can walk you through it.
  16. Scott06

    4.3 Mercruiser cold start issues

    In general the edlebrock is a good carb very easy to tune If needed. I have. Two one on the boat and one on my 65 GTO. I wouldn’t hesitate to by an other one.
  17. Scott06

    1989 5.7 Mercuiser exhaust plugged

    Remove the risers from the manifolds and inspect the water passages. not sure the year but if used in salt or brackish and they are 5 + years old likely they will need replacement . Drain the manifold before you take the riser off
  18. Scott06

    2014 350 mag cat, port manifold/riser considerably hotter?

    Its typical to see a 20-30 degree difference in manifold temps. If you can keep your hand on them I suspect you are fine. Might want to use an IR thermometer to check temps.
  19. Scott06

    Question on fuel

    It depends on how fast you consume the gas. In my experince if you burn through it I have not had issues from typical pump gas. I run ethanol from the pump in my jetski because I fill it from a 5 gal can and go the marina to fill the boats 37 gallon tank because it is easier and worth the $ for...
  20. Scott06

    4.3 Mercruiser cold start issues

    Maybe 25-30 seconds. It seems like a long time when cranking and the buzzer is going off. I think not only is it refilling the bowl but getting gas through the idle circut passages again.
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