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  1. Lou C

    RE: Issues with Mercruiser 5.0 LX 4 Barrel Carb

    PS one hydraulic lifter being adjusted too tight can cause a valve not to close all the way and that can cause low compression. Heads were checked by a machine shop? It is common due to leaky inboard wet exhaust that you can have sticky valves causing lower compression.
  2. Lou C

    RE: Issues with Mercruiser 5.0 LX 4 Barrel Carb

    If one is at 80 psi that’s too low. A small block Chevy in good shape should have compression #s of approx 150; but it you did the comp test on a cold engine it would not be that accurate. Warm up engine set throttle wide open, remove spark plugs & disable ignition. After I replaced the cyl...
  3. Lou C

    Wheel Bearing Inspection Interval

    I had the same experience. 17 years with the first axle and 2 years with the second. When the drum brakes need service I change the seals & inspect the bearings. If I were dunking every week that would be different but this is a moored boat & the trailer only goes in salt water 2-4 times a year.
  4. Lou C

    4.3L OMC Cobra 1988 engine knock/rattle

    Exactly if you pull the drive & it’s quiet it could be a REALLY rusted gimble bearing or someone might have refilled the Cobra drive the wrong way and trashed the upper gear housing. Hopefully it’s the former not the latter
  5. Lou C

    1991 Sea Ray Bowrider 170 - Trying to remove bench seats and put in captains chairs. Is this possible?

    When I did my old '88 FW H-200 about 18 years ago....the square panels are the reinforcement for the pedestal seat mounts. Mine came with the pedestal seats so I just duplicated what was there.
  6. Lou C

    Bottom up restoration! MY FIRST BOAT

    Do you have a clear registration or title to the boat? Wouldn't want to do all that work, and then not be able to register it.
  7. Lou C

    Converting to Electric over Hydraulic this week

    Interested to see your impressions of the difference between standard surge brakes and EOH
  8. Lou C

    1993 Mercruiser 7.4 - Is my Problem Carb or Thunderbolt IV module

    If you have to use E-10 gas there are better quality accelerator pumps available from Cliff's High Performance, make sure you tell the shop the carb is for a boat.
  9. Lou C

    Roller trailer OK for aluminum boat?

    I’m think they use them in Australia but probably with more & smaller rollers than are used on US trailers
  10. Lou C

    Replacing 95 merc 4.3 with 87 OMC 4.3

    When I bought new Barr Marine manifolds and elbows to replace the one piece OMC V6 units, after I removed the paint they were perfect, couldn't even get a .001" feeler blade in under the straight edge anywhere. Here's what a new manifold looks like... one more tip, if re-using the old...
  11. Lou C

    Replacing 95 merc 4.3 with 87 OMC 4.3

    .003" feeler gauge I meant. Yesterday the forum was acting wacky lol. Volvo Penta published a document indicating how to check the sealing surfaces and how to re-surface properly.
  12. Lou C

    Replacing 95 merc 4.3 with 87 OMC 4.3

    They might be fine; the “official” way to check these is to lay a straight edge over them and see if you can fit a .003” in anywhere it should not fit, if they are really good a .001” won’t fit.
  13. Lou C

    1993 Mercruiser 7.4 - Is my Problem Carb or Thunderbolt IV module

    See it's not rocket science!
  14. Lou C

    1993 Mercruiser 7.4 - Is my Problem Carb or Thunderbolt IV module

    I wouldn’t exchange an original marine Q-jet for anything you get via internet because you might wind up with a Franken carb that will never work right. I used to think a QJet was too hard for a novice to rebuild but when I took a crack at my original one I found that it’s no harder than any...
  15. Lou C

    Replacing 95 merc 4.3 with 87 OMC 4.3

    On second thought I might want to go over those elbows with a file or belt sander and then check em
  16. Lou C

    5.7 TBI possible fuel pump issue

    How about the crank sensor? These can cause trouble when the engine gets hot.
  17. Lou C

    1993 Mercruiser 7.4 - Is my Problem Carb or Thunderbolt IV module

    Did the mechanic actually test the timing advance with an advance timing light at different rpm? Between an electronic ignition system & a carb, a carb is more likely to cause running problems.
  18. Lou C

    Replacing 95 merc 4.3 with 87 OMC 4.3

    The manifolds look ok, but the sealing surfaces of the elbows look a little questionable. If I was replacing an engine I’d replace the elbows to be on the safe side.
  19. Lou C

    Replacing 95 merc 4.3 with 87 OMC 4.3

    Agreed those gaskets can be a problem on any wet exhaust design especially in salt water. When I installed my Barr exhaust conversion 6 years ago I coated all of the sealing surfaces with Permatex Aviation & that & good gaskets seems to have helped it seal well. So far no leaks but I’ll probably...
  20. Lou C

    383 conversion, outdrive concern.

    That drive was used behind big blocks so it should be fine
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