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Recent content by flathead41ford

  1. flathead41ford

    Mercruiser 175 getting hot under load

    Bringing this back up. Tested water flow from the impellers. I ended up checking where the hose goes into the engine. I did this to both engines. Good engine was done first and was under what is specified. It put out just over 2qts in 15 seconds. Did the engine that got hot next and it put out...
  2. flathead41ford

    Mercruiser 175 getting hot under load

    Great info, thanks!!!! When I flushed that feed I didn’t see a leak after I thought about it so I guess a ripped hose is low on the possibilities. I don’t know if I will have much time to spend on it this weekend as some other things have come up. I will post here again with what I find. Leaving...
  3. flathead41ford

    Mercruiser 175 getting hot under load

    All parts I have bought for the boat are Quick Silver. I bought the gimble hoses for sure but do not remember if I replaced them when I did the bellows in 22/23. They are formed I’m sure of that. I did not do them in the past couple weeks when this started acting up. I know where they are in the...
  4. flathead41ford

    Mercruiser 175 getting hot under load

    The seal you were mentioning is good. It was cocked or balled up when one engine was doing the same thing in 2021. If I remember right there was like a 4 bolt little housing that came off and it was a larger cylinder type seal. Right where that transfer tube slides into the upper housing of the...
  5. flathead41ford

    Mercruiser 175 getting hot under load

    I should have added that as well. Both engine water pumps were replaced in 2022/2023 when I did bellows and gimble bearings. As far as I knew they were original to the boat so I replaced them before I put it in the water for the 2023 season just to be safe. Pumps were Quick Silver. I was having...
  6. flathead41ford

    Mercruiser 175 getting hot under load

    1. When doing impellers, feed line flushed standard and reverse flow on both engines. No restrictions noticed. The seal you mentioned was checked as well. I had that issue on this boat when I first got it so it was the first thing I looked at when I dropped the lower units. My fingers were...
  7. flathead41ford

    Mercruiser 175 getting hot under load

    Boat is raw water cooled. Sorry, I didn’t realize that the alpha 1 gen 1 was ever used in closed cooling. Fresh water was referring to it being used in a fresh water lake, not salt.
  8. flathead41ford

    Mercruiser 175 getting hot under load

    Pulled the elbows and they didn’t look the best. Exhaust manifolds looked pretty darn good. Replaced elbows with new quick silver and still getting hot. It does seem to take longer to get hot though so it is better, but not fixed that’s for sure. Manifolds not showing any heavy scale on the...
  9. flathead41ford

    Mercruiser 175 getting hot under load

    Never had one apart. Do these normally cooperate and come apart or do they tend to break bolts. If they tend to be frozen, is there a way to test with them still together? I’m a mechanic in the salt belt of Cleveland OH so exhaust work at a location far away from my torches has me considering...
  10. flathead41ford

    Mercruiser 175 getting hot under load

    I believe my PS cooler is in between the impeller and the engine. That line was flushed standard and reverse flow with fresh water. No restriction in that stretch.
  11. flathead41ford

    Mercruiser 175 getting hot under load

    From what you are saying about yours, it sounds to be the exact same as what I have. Springs and check balls don’t seem any different between the 2 engines so my assumption is that isn’t the issue.
  12. flathead41ford

    Mercruiser 175 getting hot under load

    Sorry guys. It has a pair of Chevy 4.3 V6 2 barrel 175 HP engines.
  13. flathead41ford

    Mercruiser 175 getting hot under load

    I’m leaning towards manifold or risers but not sure how to test them without taking apart. Boat is an 87 Sundancer 270 with a pair of 175s. Fresh water, alpha 1 gen 1. We took our maiden voyage for this year July 3 for fireworks. The late start for us was frustrating then the boat getting hot...
  14. flathead41ford

    Twin 4.3 horsepower vs cruise speed (4.3 upgrade questions)

    Oil pressure was verified with a mechanical gauge. Both engines are running 20w50. Both props are aluminum and painted black. As I look back into specs, it looks like everyone responding is correct with a WOT RPM in the 4600 area depending on what site. I seem to read 4400-4800. The previous...
  15. flathead41ford

    Lack of fuel to carb

    I’m more familiar with cars than boats so take this for what it’s worth. Automotive Quadrajets have several well plugs that would tend to leak as they got older. They would cause rich idle, hard starting when hot as well as bowl bleed down over night like you’re seeing. I’m assuming boat...
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