Unable to remove these from old manifolds..what are they when I ask for new ones?

Discussion in 'General Maintenance/Repair Questions' started by YeOldeStonecat, May 26, 2019.

  1. YeOldeStonecat

    YeOldeStonecat Active Member

    249
    Jun 10, 2018
    Waterford, CT
    '97 300 DA "Me-Shell"
    Twin 5.7 V-Drive
    Tried hitting these with penetrating oil, heating up with torch...have a huge pipe wrench, nothing can budge them. So....I need 2x new ones.

    IntakeElbow1.jpg IntakeElbow2.jpg IntakeElbow3.jpg
     
  2. JVM225

    JVM225 Well-Known Member GOLD Sponsor

    Apr 8, 2008
    Farmingdale, NY
    2002 410 Sundancer, Monaco Edition.
    3126 Cats.
    Try to match them up in the plumbing aisle.
     
  3. YeOldeStonecat

    YeOldeStonecat Active Member

    249
    Jun 10, 2018
    Waterford, CT
    '97 300 DA "Me-Shell"
    Twin 5.7 V-Drive
    Those manifolds will be uncomfy as heck to put in my pocket to go walk in and hold up and compare.....

    If I could remove them I would walk in and hit that aisle and compare til I found 'em...but...
     
  4. scoflaw

    scoflaw Well-Known Member

    Aug 10, 2011
    cape cod mass, cape coral fl
    1999 Powerquest legend 260 sx
    502 mpi Bravo 1
    It's a brass fitting, use muscle.. if you can't get that off start working out at the gym.
     
    rcknecht, tdschafer and techmitch like this.
  5. Creekwood

    Creekwood Well-Known Member GOLD Sponsor

    Apr 26, 2009
    Oakville and Georgian Bay, Ontario
    '97 330 Sundancer, Raymarine C80 suite with radar, Mercury 310 Hypalon w/8hp Yammie 2stk
    2X 454 carbs w/ vDrives
    Are those the fittings for the plastic block drain plugs to fit in?
     
  6. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    I've always just referred to them as elbows. But you should be able to get 'em out. Use some force, man! Or maybe "the" Force...

    Before you go cranking on it, though, put the male pipe fitting back in it to keep it from possibly deforming. Try a hammer on the wrench, too... and/or the top of the fitting.
     
    Last edited: May 26, 2019
  7. Bt Doctur

    Bt Doctur Well-Known Member

    Aug 21, 2010
    New Jersey
    Ex SRV 240 Weekender twin
    in between
    a standard inverted flare passes hot exaust to the intake manifold
     
  8. Bt Doctur

    Bt Doctur Well-Known Member

    Aug 21, 2010
    New Jersey
    Ex SRV 240 Weekender twin
    in between
    part number 805563 1/2 inch NPT to 1/2 in inverted flare
     
  9. YeOldeStonecat

    YeOldeStonecat Active Member

    249
    Jun 10, 2018
    Waterford, CT
    '97 300 DA "Me-Shell"
    Twin 5.7 V-Drive
    Believe me I'm a big fit guy...2x other people tried, one a young strapping kid in his 20's...
     
  10. YeOldeStonecat

    YeOldeStonecat Active Member

    249
    Jun 10, 2018
    Waterford, CT
    '97 300 DA "Me-Shell"
    Twin 5.7 V-Drive
    I can only find references to this straight unit here.
    [​IMG]
     
  11. atrick

    atrick Active Member

    250
    Mar 4, 2017
    Penna
    1995 searay 290 Sundancer
    1990 21 maxum
    Twin 4.3 mercrusers with alpha one genII drives
    305 chevy with a alpha one drive
    Try the auto parts, use that fitting on brake lines more than in plumbing jobs.
     
  12. JVM225

    JVM225 Well-Known Member GOLD Sponsor

    Apr 8, 2008
    Farmingdale, NY
    2002 410 Sundancer, Monaco Edition.
    3126 Cats.
    Hard to tell by looking at them but as was indicated before they look to be 1/2” NPT.
    Here is a picture of one on Amazon, but I’m pretty sure you can get it at Home Depot.

    2241DE26-F683-42BC-8582-9668231AC809.jpeg
     
    YeOldeStonecat likes this.
  13. dlvwill

    dlvwill Member

    150
    Jun 24, 2011
    Wichita, KS
    2004 220 Select
    350 MAG MPI w/ Bravo III
    That isn't the right listing. The female needs to be an inverted flare.
     
  14. JVM225

    JVM225 Well-Known Member GOLD Sponsor

    Apr 8, 2008
    Farmingdale, NY
    2002 410 Sundancer, Monaco Edition.
    3126 Cats.
    Or, if a nipple/barb gets threaded in the female side for a hose to be slipped over and clamped to it he can use a suitable 1/2” MPT adapter instead that has the correct size barb end for the hose to attach to.
    Either way:
    Hopefully he gets the idea that there are easy solutions out there that can be adapted if he can’t get the old ones off using a pipe wrench after a good soaking with PB Blaster.
    Slipping a length of pipe over the end of the pipe wrench to extend the handle will increase leverage to make removal easier.
    Worst case scenario is he snaps the old fitting in the old manifold and he is back where he started needing a new brass elbow. Nothing to lose.
     
    Last edited: May 28, 2019
  15. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    As far as a new fitting goes, did you try contacting a Merc dealer? A Mercruiser certified dealer, specifically. They'll either have it in stock, can get it quickly, or will know what the new replacement is. Don't worry about sizes - the parts guy will know immediately based on the pic. Should be a 2 minute phone call/email/stop by the store.

    EDIT: Oh, when you used the heat, were you able to get the surrounding manifold cherry red?
     
    Last edited: May 28, 2019
  16. sdarc

    sdarc Active Member

    Dec 20, 2010
    Piedmont NC
    Boatless
    Boatless
    After heating to cherry red, put a 4 foot pipe in the end of the wrench for leverage.
     
  17. Bt Doctur

    Bt Doctur Well-Known Member

    Aug 21, 2010
    New Jersey
    Ex SRV 240 Weekender twin
    in between
    I posted the correct part number for that fitting and it dosent require a 4 foot extention on a wrench
     
  18. YeOldeStonecat

    YeOldeStonecat Active Member

    249
    Jun 10, 2018
    Waterford, CT
    '97 300 DA "Me-Shell"
    Twin 5.7 V-Drive
    No...just a smaller propane torch.
     
  19. YeOldeStonecat

    YeOldeStonecat Active Member

    249
    Jun 10, 2018
    Waterford, CT
    '97 300 DA "Me-Shell"
    Twin 5.7 V-Drive
    Thank you for posting that part number...I'm looking into it...so far the only pics of it I see online it's a straight unit not 90*..but you know how inaccurate pictures can be in some part listings.
     
  20. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    To be effective, it's gotta get cherry red. A propane torch likely won't get it done - too much metal and not hot enough.

    Give yer local Merc place a shot!
     
    JVM225 likes this.

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