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  1. Lou C

    My boat is being a boat . . .

    Ted I would think that with the low hours the thermostat and/or pressure cap are much more likely causes. You could do the clear hose test (replacing the hoses feeding the manifolds/elbows) to see if there are air bubbles in the coolant; or alternatively you can get one of those combustion gas...
  2. Lou C

    2012 5.0 Ltr. MerCruiser overheating issue

    I’d do the clear hose test to check for combustion gas getting into the cooling water from possibly leaky head gaskets. Temporarily replace the hoses feeding the manifolds from the thermostat housing with clear reinforced hose. Ideally test in the water & run it at idle & on plane while a helper...
  3. Lou C

    Help with OMC/Volvo 3868156 joint venture outdrive shift cable please

    Unlike the original OMC Cobras these do not use a gasket between the pivot housing and the drive. The seal is made by the bearing carrier pushing into the outer edge of the bellows. The shop manual for the Cobra says to coat the inner lip of the bellows and bearing carrier with triple guard...
  4. Lou C

    1989 Bayliner Trophy OMC 5.8L - Help with new boat

    PS you might consider posting this up on the bayliner owers' board, someone there may have the same boat, might know better. www.baylinerownersclub.org
  5. Lou C

    1989 Bayliner Trophy OMC 5.8L - Help with new boat

    The only way I can see of doing it MAYBE is to support the engine from above using the lifting eye on the starboard side of the engine (you can see it in the pic) and lift it just enough to take the weight off the mounts and remove the mount. But, that is risky to say the least and I'm not sure...
  6. Lou C

    Quadrajet Secondaries Problem

    We all have limits in terms of what's the best service we can find for whatever we like doing, however there are certain things that just don't make sense, not getting rid of old gas, is one of them. Ask a tech rep from Mercruiser if you should run a boat on 3-year-old gas and I bet you they'll...
  7. Lou C

    4.3 mercruiser vs vortec pistons

    375-17210 Keep in mind this comes with the intake gaskets for the pre Vortec you’ll need to pick up a set of Vortec intake gaskets. I believe the head gaskets & exhaust manifold gaskets are the same for both.
  8. Lou C

    If you have a roller trailer used in salt water....check this....

    I've seen that on a few trailers (bent roller bar) over at the local marina. Not sure how it happens, other than the boat may load in such a way that too much weight is going on the front roller bars and the rear still floating? Angle of the trailer when loading? Who knows.... Yep once you see...
  9. Lou C

    Mercruiser 4.3 Alpha One problem - loses power

    Your main fuel filter is in pic #2, extreme lower right, the round housing you see there, the large water separating fuel filter should be screwed into that housing (below what you see in the pic) it is large like an oil filter. Some Mercs had the pump with the filter built in but you appear to...
  10. Lou C

    5.7 GXI-H engine. Alternator problem ?

    Isn't there also an S terminal (Voltage sense)? I know the older Volvo set ups had the Excite, Sense and Voltage output terminals, and on some the Sense was simply connected to the Voltage output terminal with a short wire.
  11. Lou C

    4.3 mercruiser vs vortec pistons

    I would see if you can get a Fel/Pro marine head gasket set for the 4.3, in the USA they are about $120 or so, the head gaskets are the same for the pre-vortec and Vortec, you would just need to get the Vortec intake gaskets those just use the best ones you can find, I don't know that any are...
  12. Lou C

    Quadrajet Secondaries Problem

    That, or a REALLY GOOD classic car restoration place or a speed shop. Here on Long Island we have SK Speed in Lindenhurst NY. https://www.skspeed.com/ When I go here to buy stuff I’m in hot rod heaven. As a kid I grew up watching street racing in Brooklyn NY everyone knew how to rejet a Holley...
  13. Lou C

    Quadrajet Secondaries Problem

    https://cliffshighperformance.com/
  14. Lou C

    Quadrajet Secondaries Problem

    The solution to the boat repair place that doesn’t want to change carb jets for an engine running at 5,000 ft altitude may be to find a shop that restores classic cars. Any one of them will be totally familiar with a Quadrajet they were on nearly everything GM made from 1966 up. Only the highest...
  15. Lou C

    Oil Analysis Poor Sample

    I think it would be ok just take a look at it make sure the clamps are tight
  16. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    this is the biggest problem with raw water cooled inboards, if you forget to drain it JUST ONCE, it's game over. that's why any boat I buy in the future will be 4 stroke outboard powered. We have a little Suzuki DF 2.5 for our water taxi and it is a beautiful thing, yearly maintenance is like...
  17. Lou C

    Quadrajet Secondaries Problem

    I’m thinking Sierra…so yeah Chineseum
  18. Lou C

    Quadrajet Secondaries Problem

    Ok I looked at that closely And what I noticed They show pix of every angle and where the traditional Rochester Quadrajet logo is (by the throttle linkage area), nothing! I heard that Sierra was making these some years back to the OP is it stamped Sierra anywhere? If so it’s an aftermarket copy...
  19. Lou C

    Quadrajet Secondaries Problem

    Made by who? Rochester quit making them in 1990. Mercruiser switched to the Weber 4bbl (similar to the old Carter 4bbl and Edelbrock) and OMC/Volvo went to Holley. Edelbrock did make Qjets in the '90s but none were marine units. So anybody who sold you a 'new' Qjet, either lied or sold you a...
  20. Lou C

    Quadrajet Secondaries Problem

    There is also a vacuum operated valve connected to a linkage that has to be sucked in by engine vacuum (like a choke vacuum break) for it to work. When they work, you will know it, we call that the Quadrajet Howl.
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