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  1. Baylinerchuck

    Chaparral 2000 SL Sport floor, and more?? [SPLASHED Sept 2017]

    As I am updating the Quadrajet thread I decided to fix a problem I created when I was restoring the boat. This summer We got surprised by a torrential downpour. I have never had my bilge pump kick on in auto until this trip. The rain water almost completely filled the storage areas I created...
  2. Baylinerchuck

    1986 Brougham Bridger Yukon Delta Fishing boat renovation

    My motor mounting platform toward the rear of the engine has a notch for the starter to clear. The mount runs and ties into the transom for more strength, but has a step in it for clearance. I wouldn’t be too worried about the alternator bracket at this point either since the motor will most...
  3. Baylinerchuck

    Rochester Quadrajet Rebuild and Adjustments

    Next step we prepare to install the air horn onto the main body. Insert the accelerator pump return spring into the pump bore. Connect the air door linkage to the arm in the main body. It’s usually necessary to rotate the arm to its highest position, then slide the linkage into the hole...
  4. Baylinerchuck

    Rochester Quadrajet Rebuild and Adjustments

    Now that the main body or base is built, we can put the air horn back together. It is highly recommended to install a new secondary cam during a rebuild. These plastic cams can be worn from years of use causing poor performance. The cam raises the secondary rods as the secondary air doors...
  5. Baylinerchuck

    Rochester Quadrajet Rebuild and Adjustments

    Install a new plastic retainer on the power piston. A rebuild kit should come with this seal. Check the rod hangers on the top of the power piston to ensure they are straight, and carefully bend if necessary. The hanger arms should be even. Place the primary metering rods on the hanger. Insert...
  6. Baylinerchuck

    Rochester Quadrajet Rebuild and Adjustments

    Install the float valve, (fuel inlet valve) seat next. Make sure the old seat gasket was removed during the tear down. Install the new seat gasket, then install the seat. Tighten firmly with a screw driver that will not damage the brass. As a note, the rebuild kit from Cliff’s Performance...
  7. Baylinerchuck

    Rochester Quadrajet Rebuild and Adjustments

    Below is a picture of the rebuild kit. This one came from Cliff’s Performance and contains some parts not included with some of the more cheap kits. In the rebuild section of the book, Cliff reseats the check ball into the casting for the accelerator pump. This was not something I’ve ever...
  8. Baylinerchuck

    Building a '93 Caravelle 1750 Classic Bowrider

    IT appears to be a breather of some sort for the flywheel housing. See image below. Obviously this is not available. Like I said, just use regular rubber tubing, or nothing at all. This is definitely not in an alpha drive, trust me, we’d know. The starter gear housing on a Mercruiser is not...
  9. Baylinerchuck

    Building a '93 Caravelle 1750 Classic Bowrider

    Not really familiar with the OMC, but it looks like this is a sealed coupler to the engine that is offset from the starter gear, unlike mercruiser setups that are directly bolted to the gear. Is that housing filled with lube, or is this a breather tube? Either way, it looks like you could use...
  10. Baylinerchuck

    Help with lraw water cooling. Having trouble identifying a part.

    The spacer or bushing I think you are referring to comes with a new hose. You would need to know the serial number of the engine to get this hose. The one pictured might be right as I entered your year and engine size.
  11. Baylinerchuck

    Rochester Quadrajet Rebuild and Adjustments

    Check the side play and clearance of the primary throttle plate shaft. Cliff’s Performance offers a special drill and bushing kit to repair a worn casting. I didn’t need to do that as mine is pretty tight. Make sure the idle discharge holes and off idle ports are clear. Again, I used the G...
  12. Baylinerchuck

    Rochester Quadrajet Rebuild and Adjustments

    Rebuild the throttle plate first as you’ll want to secure the base to it when installing all the other parts, holding everything securely. A suggestion from Cliff Ruggles was to slot the idle mixture screws so they can be adjusted easily with a flat blade screw driver. Late model QJs required...
  13. Baylinerchuck

    Rochester Quadrajet Rebuild and Adjustments

    One of the other problems with my oem carb was that following some bad advice I received from a National Carburetor tech, I went on a search for an Adjustable Part Throttle valve or APT screw. This sent me on a wild goose chase and eventually led me to open a knockout in the air horn casting...
  14. Baylinerchuck

    Rochester Quadrajet Rebuild and Adjustments

    I bought the bottom plug kit from Cliff’s Performance specifically because I couldn’t clear a blockage in one of the idle tubes. The kit comes with set screws to use as plugs and MarineTex. in order to clear the blockage I needed to drill the smaller front plugs in the main body. This well...
  15. Baylinerchuck

    Chaparral 2000 SL Sport floor, and more?? [SPLASHED Sept 2017]

    Sadly once again we have reached the end of swimming season here in South Central PA- Central Maryland- West Virginia Pan Handle. Temps in the low 60’s with overnight temps in the upper 30’s. Back in the body of this thread and a few years ago in time, I had replaced the oem Quadrajet with a...
  16. Baylinerchuck

    Rochester Quadrajet Rebuild and Adjustments

    Remove the two idle mixture screws from the throttle plate. It a good practice to count the number of turns it takes to lightly seat the screws. This is where we would want to set the screws on reassembly. Remove the 4 screws securing the large air door flaps. Unhook the air door tension...
  17. Baylinerchuck

    Rochester Quadrajet Rebuild and Adjustments

    To continue the year down, slowly lift out the float hanger and fuel valve float assembly. Remove the accelerator pump ball check retainer and ball. I use a magnetic screwdriver so the ball sticks to the retainer. Remove the gasket if not already removed on the bottom of the throttle...
  18. Baylinerchuck

    Rochester Quadrajet Rebuild and Adjustments

    So I’m continuing with the year down. As posted before, I have abandoned the idea of tuning an inferior remanufactured carb in favor of rebuilding the oem Quadrajet. So for the year down, I already covered removing the air horn. Below is the base with the gasket still in place. Remove the...
  19. Baylinerchuck

    Rehab SportCraft 222 1983 deep V hull cuddy walkaround

  20. Baylinerchuck

    Getting new stringers engine install

    The rear bolts that thread into the transom plate will align the motor from side to side. Purchase an alignment bar to ensure your height is perfect, otherwise you’ll fight getting the driveshaft in and potentially ruin the coupler. You can get them from iBoats. See below. Buy one of these...
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