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  1. Scott06

    Ford 302 spark plugs

    Looks like you got a bum rebuild...
  2. Scott06

    Ford 302 spark plugs

    you wont notice the water that's not supposed to be in the exhaust from the water that is supposed to be in the exhaust (cooling water exit to overboard goes in exhaust )
  3. Scott06

    manifold bolts

    I've done it on old cars, grind head off, heat and pipe wrench on the remnants of the bolts. Ricks comment of stud remover is definitely better .. Be patient with the heat especially if you are using a small propane or mapp torch. If you break it of clean with the head you will end up yanking...
  4. Scott06

    Ford 302 spark plugs

    So its no longer locked up now? be careful not to snap the bolt of the crank ... There is always water in the exhaust in a marine application. If you get enough water into a cylinder since water doesn't compress it can lock an engine up even bending rods. I think it is more typically seen after...
  5. Scott06

    Ford 302 spark plugs

    See if there is water in the cylinders possible it hydrolocked
  6. Scott06

    3.7 to 4.3 swap

    Vortec heads were introduced adds about 20 hp vs non vortec
  7. Scott06

    Bought a new long block and wondering about the coupling and gimbal bearing.

    Yes choke likely needs to be adjusted leaner. You really dont need much choke when its warm out
  8. Scott06

    Bought a new long block and wondering about the coupling and gimbal bearing.

    Agreed 4700 to 5000 maybe a tad over is fine. Have you verified tach against a shop tach? dont think you can go lower in pitch not a lot available below 15” . Now if you wanted to go to stainless with more bite and cup than the black max you have on there i would definitely drop down.
  9. Scott06

    3.7 to 4.3 swap

    If boat was offered with a V8 i would bet those stringers are for v engine mounts. Here is a 5.7 install drawing measure it up iff the gimbal bearing as crankshaft center line...
  10. Scott06

    New to me 2009 4.3 stern drive

    I thought they were pre alfa risers 😎… seriously to the OP you should be checking for water in oil and pressure testing cooling system. id be surprised if the manifold was the only thing cracked
  11. Scott06

    Mercruiser 4.3 knocking noise

    Easy to do don't really need a stand it can be sitting on blocks.
  12. Scott06

    Mercruiser 4.3 knocking noise

    yes chevy has only two starter configurations based off flywheel size straight and staggered bolt pattern. Don't recall which takes which but depends on if you have the small 12.75 ish "or newer 14" flywheel.
  13. Scott06

    Mercruiser 4.3 knocking noise

    Yeah since you are pulling it anyways would check the starter. or pull the starter and see if it looks nicked up... but it is almost easier to pull the engine to get the starter out... https://www.michiganmotorz.com/4-3l-flywheel-1987-later-engines-14-diameter this lists the flywheel as the...
  14. Scott06

    Mercruiser 4.3 knocking noise

    Only thought is coupler, flywheel or starter. Is starter not fully disengaging and hitting flywheel? might be worth pulling it and taking cover off bottom of flyhweel cover to see. Balancer hub up front? Did you swap balancer and flywheel from the old to new engine? May be a mismatch between non...
  15. Scott06

    Mercruiser 4.3 knocking noise

    Correct I think you may have to send it back to the rebuilder. I assume the noise is different than the knock on the original engine ?
  16. Scott06

    Mercruiser 4.3 knocking noise

    only other longshot is if exhaust flappers in top of wye pipe are making the nocking… whats the history on the replacement engine?
  17. Scott06

    Mercruiser 4.3 knocking noise

    No with drive off its an engine noise. Did you remove the drive belt off the engine to see if it is an issue with one of the front accessories?
  18. Scott06

    What is this?

    your right the upper part is on the bell housing not upper …so yeah what he said ….
  19. Scott06

    What is this?

    As stated it got forced in during reassembly of the two outdrive halves, may have to separate and see if they can line up. May be bent … i broke the shift lever in the lower its an expensive part , just jammed it on wasnt lined up…
  20. Scott06

    Water pump repair kit

    First buy a genuine merc or quicksliver kit general consensus is they last longer. I just replaced my Gen 2 impeller last fall was in perfect condition after 6 years...worth the $25 extra. The metal gasket goes under the steel bottom plate (between plate and lower housing), merc went to this a...
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