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  1. K

    OMC 460 vacuum test/reading

    Do not try to readjust the carburetor if you check the vacuum with the boat in the water. The back pressure of the water against the exhaust always shows a lower reading.
  2. K

    Rochester 2gv

    That one should work and it is the best price. Too bad you cannot get it for the catalog U.S. Price @$179.90. #SUM-226063
  3. K

    Rochester 2gv

    Just be sure to get a dual plane manifold and not a single plane.
  4. K

    Overheating under load

    It is normal for the manifolds to have a different temperature. Sometime it can be balanced by trying different size stainless flat washers to the manifold inlet of the cooler manifold. A infrared temperature gun would help.
  5. K

    Clear hose

    You are right on about that Scott. I added the Indmar thermostat kit to keep condensation from building up under the valve covers on my boat. Not a cheap part but worth it. That was always a problem with the boats I used to work on. The bottom line is to use quality hose.
  6. K

    Mercruiser 120 G1 A1 - Transom Seal

    The cork gasket is a dry fit. Clean all surfaces with alcohol first. Do not use any sealer on it. After the housing is bolted on you can go around the housing with RTV if you want. Torque the mounting hardware to 10 ft. Lbs in stages several times to let the wood in the transom compress. I...
  7. K

    Rochester 2gv

    It looks like the correct one. Depending on the temperatures where you are you could loosen the choke some. Does it also have the brass inlet fitting for the fuel line?
  8. K

    Overheating under load

    It might be lodged in the thermostat housing.
  9. K

    Clear hose

    Home Depot/Lowe’s has clear reinforced hose that I have used to replace all the hoses on my jet boat. They can be used if you do not need any that are molded with tight bends.
  10. K

    Rochester 2gv

    Just be sure that whichever carburetor you end up with it is a Marine version.
  11. K

    Rochester 2gv

    Sierra # 18-7636 Rebuilt 500 cfm Holley Sierra# 18-0994. Gasket
  12. K

    Overheating under load

    Add a piece of clear hose just where the supply hose enters the thermostat housing. This will show if there is an air leak on the incoming supply. Have someone watch the clear hose before and when on plane. If there are bubbles after the boat planes then the drive is the problem. If the...
  13. K

    ARCO Tilt pump refilling with ATF

    ATF tends to foam, power steering fluid would be a better choice.
  14. K

    Bought a replacement Merc 3.0 Engine - wrong flywheel/coupler

    If the bolt circle on the replacement engine is larger than the previous engine then you will need the following from Sierra Marine. 877 663 8396 18-72510 stud kit 18-2171 Coupler. Double check with them but this should get you back in the water.
  15. K

    power steering cooler on a 1989 4.3 liter cobra

    There should be a stud top center.
  16. K

    Alpha one drive gear /shaft od 1.50:1

    2Xs with the Boat doctor. The last thing you want to do is start switching those spacers or mixing them. When the retainer is tight it should be easy to rotate the shaft with no slack.
  17. K

    Rochester 2gv

    I once had a slight bogging problem and after removing the Venturi boosters and removed the check ball spring there were 2 springs that were wound around each other doubling the resistance. This was on a new engine that I had installed. The fuel would barely squirt.
  18. K

    Alpha one drive gear /shaft od 1.50:1

    The original 1.32 ratio that came with the Ford 233 hp used the stepped i.d. bearing set. All other engine combinations used bearings that shared the same i.d. What you have is probably a gearhousing that has been rebuilt and parts swapped around. The older this stuff gets the more likely this...
  19. K

    flywheel replacement

    It may be possible to just separate the engine at the flywheel housing. The only thing that could cause a problem is if the splined shaft is rusted into the flex plate. If that happens then by working through the starter mount hole unbolt the plate from the flywheel. As Scott said the ring...
  20. K

    Trim sending Unit

    The first versions of your model did not have zerk fittings to grease the pivot points. There was a service bulletin where the bolt had to be removed then drill through, tap the hole and screw in the zerk fitting. Try to back the screw out some so that the corrosion may loosen up. A length...
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