Search results

  1. Lou C

    New Engine Replacement - Engine Died and Hydro locked after 5 hrs!?

    that looks like it might work. As far as how water gets into the engine, keep in mind there are really several sources....the engine while running has to have a steady flow of cool water pumped in by the impeller, naturally this gets exhausted 100% out the elbows, BUT, if reversion is happening...
  2. Lou C

    New Engine Replacement - Engine Died and Hydro locked after 5 hrs!?

    yes, there are also idle relief ports in the bottom of the transom mount where water exits at idle but at sped most comes out that tube
  3. Lou C

    New Engine Replacement - Engine Died and Hydro locked after 5 hrs!?

    https://www.volvopentastore.com/Intake-And-Exhaust-System/dm/store_id.366--view_id.768638 part #5, same for v6 & v8 as are the elbows. you don't have an exhaust bellow that's an exhaust tube. remove the tube & replace with a flapper, if it fits ok over the tube & won't come off you could do that...
  4. Lou C

    New Engine Replacement - Engine Died and Hydro locked after 5 hrs!?

    https://waterskis.com/exhaust-flap-3-3-5-4/?msclkid=d3b901ee3fd11ba4481a63b68f1f8cf3&utm_source=bing&utm_medium=cpc&utm_campaign=S%26O%20%7C%20Water%20Skis&utm_term=4587918426699680&utm_content=GSAPI%205fe220553bc01 something like that, to prevent water from washing up the Y pipe. Does your...
  5. Lou C

    2002 volvo penta 5.7 Liter idles but stalls when throttling up

    They are pretty easy to rebuild and tune, they have been using the same basic modular design for more than a half century and have very good aftermarket support.
  6. Lou C

    New Engine Replacement - Engine Died and Hydro locked after 5 hrs!?

    V/P decided to remove them in '99. There was a service bulletin, saying they were not effective in preventing hydro lock and can melt and block the exhaust if you overheat the engine. The latter statement is true not sure about the former, I have the same flappers in my '88 4.3 and never ever...
  7. Lou C

    New Engine Replacement - Engine Died and Hydro locked after 5 hrs!?

    Don't know what video that was, but...here are a few other things that V/P has done to combat exhaust reversion after the Vortec engines came out. Due to the changes made in them they were in certain installations more prone to reversion, which is when a vacuum develops in the exhaust system and...
  8. Lou C

    2002 volvo penta 5.7 Liter idles but stalls when throttling up

    Questions: does this engine have a proper water separating fuel filter? Is there junk in the gas tank? Is the accelerator pump functioning?
  9. Lou C

    New Engine Replacement - Engine Died and Hydro locked after 5 hrs!?

    When it hydrolocks is it random or is it only when decelerating? In addition to checking for other signs of water intrusion (cooling system air pressure test) there are are a few other things: One thing I’m wondering about the cam grind used on that engine, is it definitely a marine grind or a...
  10. Lou C

    4.3 vortec head torque sequence?

    You really need a shop manual. There are different torque specs depending on what version of the 4.3 you have. The old models use 65 ft lbs and you go in 3 sequences bring it gradually up to full torque (like torque all the bolts in the pattern 20 ft lbs, 40 ft lbs then 65 ft lbs). The newer...
  11. Lou C

    Mercruiser 4.3…Milky oil coming from timing cover.

    The only thing I can think of is that if the boat is stored tilting a certain way (let’s say lower on the starboard side) maybe enough water can collect to cause cracks. Also: If you look at the bottom of the pre Vortec & Vortec you see differences: The pre Vortec has a very small water passage...
  12. Lou C

    Mercruiser 4.3…Milky oil coming from timing cover.

    I looked but that service bulletin is gone from the 'net but I did find this: https://forums.iboats.com/threads/volvo-penta-4-3l-gl-j-raw-water-drain-locations-pics.559940/
  13. Lou C

    Mercruiser 4.3…Milky oil coming from timing cover.

    I recall our discussion, yep, the only thing I can say is that I found an OMC Cobra service bulletin that said that under certain conditions freeze damage can occur if you don't drain it. Having never had one, I can't say and for sure on the older pre Vortecs as soon as you pull the bottom of...
  14. Lou C

    Newer era Mercury 4 stroke cooling temperatures

    I think on some Suzuki motors they had the option of a higher temp thermostat for people in very cold regions like northern Canada & Alaska, that was set for about 140*F. I just find it interesting how many times I read that 140* was the magic number to not exceed in salt water, yet I ran a 160...
  15. Lou C

    Mercruiser 4.3…Milky oil coming from timing cover.

    this one.... the Pre-Vortec engines did not have this, I'm not sure what they changed to make that a necessity on the Vortec...
  16. Lou C

    Newer era Mercury 4 stroke cooling temperatures

    Could be, it also maybe that the salt/calcium doesn't bond to cast iron in the same way as it might to aluminum, since when cast iron corrodes it constantly flakes off small bits of iron, perhaps limiting deposits.
  17. Lou C

    Mercruiser 4.3…Milky oil coming from timing cover.

    The main thing about draining is are you sure that the drain plug opening was not blocked by rust? You should always poke the hole with a stiff wire, thin screwdriver or pick. It is common for rust flakes to clog those drain holes, on both blocks and exhaust manifolds. What to do? Well, you can...
  18. Lou C

    Mercruiser 4.3…Milky oil coming from timing cover.

    If you're lucky it might be a leaky intake gasket since that will put water right into the cam valley, if not it could be a rotted out thermostat passage in the intake, blown head gaskets or a cracked head. Was the engine drained for winter storage?
  19. Lou C

    Trim ram maxium extension

    Might want to see if measurements are given in a Volvo Penta shop manual for the standard lift height.
  20. Lou C

    New style volvo bellows

    Sounds like the SX series (1994-2005 or so). I have had the original OMC bellows last as long as11 years before small cracks started forming in the folds which means it’s time to replace BEFORE it leaks. However I recall reading that Volvo changed the design to improve durability so maybe there...
Top