Search results

  1. Lou C

    Quadrajet Secondaries Problem

    https://cliffshighperformance.com/
  2. 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...
  3. Lou C

    Oil Analysis Poor Sample

    I think it would be ok just take a look at it make sure the clamps are tight
  4. 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...
  5. Lou C

    Quadrajet Secondaries Problem

    I’m thinking Sierra…so yeah Chineseum
  6. 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...
  7. 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...
  8. 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.
  9. Lou C

    Blue Sea dual battery troubleshooting

    Something isn't right. It seems like both batteries aren't being charged when you run the boat, which that set up should do automatically. That's supposed to be the whole point of that system, that you don't have to alternate between 2 batteries like you do with the simple 1, 2, Both and Off...
  10. Lou C

    1989 Bayliner Trophy OMC 5.8L - Help with new boat

    Do a search on my user name I have posted a few times, how to set up the Cobra shift linkage. First make sure it is full of gear oil, remove the top cap, inspect the upper gears. Then while someone else turns the driveshaft clockwise, use the shifter rod that goes into the lower gear unit, to...
  11. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    I highly recommend the factory shop manual, the OMC ones were very good.
  12. Lou C

    Quadrajet Secondaries Problem

    Join the forum and post your question saying it is for a marine application and what your altitude is. Someone (likely Cliff himself) will respond, he does do marine carbs. Either that, or get a new Edelbrock since Mercruisers were rigged with the very similar Weber carb so you'd be able to get...
  13. Lou C

    Quadrajet Secondaries Problem

    If you want to stick with a QJet go over to Cliffs High Performance Quaradjets, join the forum & start asking questions.
  14. Lou C

    Quadrajet Secondaries Problem

    For one let’s keep in mind that there have not been any truly new Quadrajet carbs since 1990, anything after that is remanufactured if you’re buying it from someone else and that can be a crap shoot. Good, bad, anything in between. So there’s that. I have an original QJet that I’ve rebuilt a...
  15. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    Flappers are at the top of the Y pipe hidden by the rubber exhaust hoses. They will melt & fall down inside the Y pipe if you have an overheat. These are a hold over from the original OMC Cobra design. Volvo said that they felt they weren’t effective & could block the exhaust if melted. They...
  16. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    Ok that hole looks ok in that pic. Rusty water is probably from internal rust on the old cast iron engine & exhaust system. BTW there is much debate on this forum about the value of filling the engine & exhaust manifolds with no tox antifreeze after draining for winterization. Some just drain...
  17. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    Yes its a cone clutch and that Volvo SX is the equivalent of the Merc Bravo in strength they were used behind Chevrolet 454s so no worries on that end. While you could convert it to a Mercruiser it would be very expensive although you wouldn't have to do any transom work. Since you have a Ford...
  18. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    The first couple of years they called it the Volvo SX Cobra, then they dropped the Cobra and it was just the SX. The whole deal was like this....OMC ran into financial problems in the '90s with the Cobra shift cable recall and the Evinrude Ficht problems. Volvo wanted OMC's transom design...
  19. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    Volvo SX Sold here from 1994-2005 or so
  20. Lou C

    a carburetor shouldn't spill fuel like this, right?

    thought so well that's just Edelbrock's way of making you an expert on these things lol. like I learned with the Quadrajet I have a Sierra pump (old style mechanical) on mine that is working fine
Top