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  1. Lou C

    Best aftermarket trim sender

    Well I don’t have a Volvo but....with the OMC Cobra (similar design to Volvo SX) my OE trim senders lasted about 1 1/2 to 2 seasons max (salt water moorage)...When they became NLA I installed a Sierra one in 2010 and....it still works! So if they make one you might try theirs.
  2. Lou C

    1992 Mercruiser 4.3 w/ balance shaft and 1 piece rear main seal swap to newer year Vortec.

    Interesting so then if someone wanted to put Vortec cyl heads on a pre Vortec block then which ones would they use? Vortec? When I did my overhaul with the pre Vortec Fel Pro sold a kit with the marine HGs, intake gaskets, distributor gasket and the sealer for the front & rear China walls. About...
  3. Lou C

    1992 Mercruiser 4.3 w/ balance shaft and 1 piece rear main seal swap to newer year Vortec.

    Try: Jeg’s Summit Racing Michigan Motorz I’m not sure if the HGs are the same for both...
  4. Lou C

    Question about a 5.0 volvo penta

    Water leaks are unusual on a manifold where it meets the block, they are more commonly seen between the manifold and exhaust elbow. A water leak near the block would make me suspicious that it was really neglected and there could be other problems...rotted head, cracked head etc. look a lot...
  5. Lou C

    2bl vs 4bl

    Just make sure the engine oil is full and your cooling system is good first! The 4bbl is superior above 3500 rpm. When the huge secondaries on a Quadrajet open you will know it by the push in back and the HOWL....and running on the small primaries, it is actually more economical than a standard...
  6. Lou C

    2015 vortec 350’s repower issues

    I think pretty much all I/O installations have anti-siphon valves and when they stick they cause significant fuel starvation problems. So can a clogged fuel vent but I don't think that is so likely, but it for sure can happen. The mechanical pump, I feel is more reliable than electric pumps in...
  7. Lou C

    1990 5.7. 260 Overcooling at idle.

    All it takes is a small flake of rust to hold them open, it happens all the time with raw water cooling/cast iron engines.
  8. Lou C

    Mercruiser were 4.3 MPI first run of the season question

    I started doing pretty much all my own service in 2007 when I bought a drive jack & alignment tool. I figure drive service R&R yearly is about $500 so already saved $7000 on drive maintenance over 14 years. Despite the not great rep of OMC I have found the Cobra very easy to service, esp for the...
  9. Lou C

    OK Merc guys got a question about using a 140* stat...

    Yep that’s what I’ll do, got spare stats and tools. Might be trying to solve a “problem” that’s not really a problem!
  10. Lou C

    OK Merc guys got a question about using a 140* stat...

    Possible but when I check the area on the intake right under the stat housing that usually correlates with the dash gauge is the same; 130*. With the 160 stat I was getting 155-165 on the gauge on the intake I was getting 145-155.
  11. Lou C

    Need help with parts list- converting TBi to old school carb

    That surprises me, I think you could go as high as 5/7. Maybe depends on the carb. Never had that prob with a mechanical pump & Quadrajet
  12. Lou C

    Mercruiser were 4.3 MPI first run of the season question

    Drive oil. Probably has the little reservoir that you can check. Make sure there are no fuel leaks, might want to replace the fuel filter if not done for winterizing.
  13. Lou C

    Engine rpm is not stable below 2000 rpm

    Sounds like a Vacuum leak, are you using an adapter plate under the carb? bolts tight? The 4bbl manifold (cast iron) is a spread bore pattern (for the Quadrajet carb used before the Weber/Edelbrock style) and the Edelbrock is a square bore carb, usually you need and adapter plate in that instance.
  14. Lou C

    Mercruiser Engine Mounts

    For rust proofing if you can get it in the UK, a couple coats of Rustolium primer and Rustolium black brush applied, will work well. I did that on my exhaust manifolds and that has kept them rust free. 100% salt water on the mooring all season.
  15. Lou C

    Waterproof engine compartment?

    Maybe you can fab up something from a piece of sheetmetal, to make it lower profile?
  16. Lou C

    Compression test procedures for 4.3L GXI-E

    In addition to this: 1) warm up the engine first, cold comp tests are not that accurate 2) when cranking the engine without starting your impeller is still going to be turning, so I'd keep the water on like half way just to make sure the impeller gets lubrication.
  17. Lou C

    Waterproof engine compartment?

    how about a drain gutter attached to the underside of one of the cushions that spans the gap between them, then if it dumps water in front of the engine, not behind, you should avoid getting the distributor wet etc. A piece of that plastic gutter extension stuff (you know the stuff you use to...
  18. Lou C

    OK Merc guys got a question about using a 140* stat...

    I'm posting this on the Merc board even though I have the OMC because I feel I'll get more responses and its a generic question. OK I've had the OMC for a long time, and all their engines came with a 160 stat as did most Volvo engines, whereas Merc did use a 140 stat in their older...
  19. Lou C

    Mercruiser 4.3 cracked intake manifold

    I doubt it is loctite, it might just be gasket sealer, I'd clean it off to make sure your torque readings are accurate, anything that puts a drag on the threads can result in your inadvertently overtorquing things. When I did mine I just put a light coat of OMC gasket sealer on the threads (this...
  20. Lou C

    4.3 Mercruiser Spark knocking at high rpm

    Agreed it is a bit frightening to imagine what would happen to a 4.3 V6 with the offset crank throws at 6000 rpm! I have mine propped for 4900-5000 rpm lightly loaded, that makes it perfect with a normal load. The fact that they adjusted the timing makes me think that at least that should be...
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