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  1. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    Cam lobe seems to be confirmed. Put a dial indicator on the no. 8 intake push rod and only got 0.176 in of lift. No. 2 intake rod got .310. Time to order a camshaft. Thanks all for the help. I'm sure I'll be back soon.
  2. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    Was able to confirm I can get a USA made Marine camshaft made by Elgin with a set of lifters for about $350. Still need to get out to pull the intake to confirm its camshaft and not just the lifter, but that will have to wait till after Sunday since we're using boat this weekend. Luckily it...
  3. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    Found this set on ebay - 64 sold and seller has good reviews. Any thoughts? I am a bit of a loss at how to find what cam kit to buy if I end up needing it...
  4. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    Sierra part was basically same price shipped to West Marine so ordered the intake gasket. If I need Cam, I can just order cam shaft kit from auto parts store, right? Nothing "marine" about the cam or internal parts?
  5. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    Looks more like $80-90 for gaskets running the part number 8M0050225. Will go ahead and order so I have them on hand. Fingers crossed its just the lifter.
  6. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    Bummer. Can the intake manifold gaskets be reused or should I be ordering replacements?
  7. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    Does the intake have to come off to remove lifter?
  8. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    Removed rocker arm from #8 and put #6 rocker arm on - same gap so rocker arm is fine. Push rod dead straight and identical to #6 pushrod. Spring heights are same for 6 and 8. So Def push rod side is low. Stuck the bore scope down the push rod hole. I can't tell anything from the pic, but based...
  9. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    The bolt is tight. Can't tighten it more to remove that slack. That mean it's a stuck lifter?
  10. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    OK I think I found the problem. Very loose.
  11. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    And here is a video of it turning over.
  12. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    I don't know much about rocker arms, so not sure how much movement is normal. See video.
  13. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    Heard they reopened. Good to hear. Once I get everything straightened out would love to make it down there.
  14. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    Appreciate the feedback. Going to connect the choke supply to purple 12v+ to close that loop and pull the valve cover tomorrow. Will report back here with whatever I find.
  15. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    Baby's first bday today so stuck at home but hoping to get out to marina tomorrow morning to pull valve cover. Are all the bolts accessible without removing exhaust parts? I've read other similar cases in auto engines searching online where the problem ended up being backed out nut on rocker arm.
  16. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    Here is a video of it running. Also when I rev it up and it seems to stumble at 4000 rpm in neutral, the tach jump all over the place. Side note - previous owner converted to a 1 wire alternator and I found out this morning that the 12v supply to the choke was never reestablished. So choke has...
  17. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    Piston looks clean with bore scope. Didn't have time to pull the valve cover so will have to try to open it up Sunday. I would say it's definitely more of a tapping than a knocking.
  18. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    Upper Potomac river - will have to order a borescope to take a look inside cylinder.
  19. snowbrd84

    High compression in 1 cylinder - 7.4 carb

    1997 Sea Ray 270 with a single 7.4L carbed engine and Bravo 2 sterndrive Boat runs great at low speed but will not accelerate past 3800ish rpms. Gets up on a plane and will cruise at 27-29 mph with no bogging. Just won't go any faster. Bottom is clean, new wires, cap and plugs this year. Motor...
  20. snowbrd84

    Partial deck replacement

    Got a good deal on a '96 Bayliner 1950 that I knew had 2 soft spots on the floor but runs great. Pulled the carpet and the spots didn't look too bad. I was able to cut out the bad spots and get to dry strong plywood around both. Foam is dry and stringers look good and rest of the deck is dry...
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