Exhaust risers do it yourself??

Discussion in 'Sport Boats' started by Panchita, Feb 23, 2010.

  1. tdappleman

    tdappleman Active Member

    Dec 17, 2007
    Kill Devil Hills, NC
    1996 270 Sundancer
    New twin 4.3's - 235hp each with Alpha 1 Gen 2 Drives
    You must be very proud - that's the 3rd time you've posted the same thing in this thread....
     
  2. Panchita

    Panchita New Member

    48
    Jan 24, 2009
    MIAMI
    2005 340 DA
    Blue hull
    Garmin 740s with Radar
    8.1 Merc V-Drives
    The total for both engines cost around $3500.00 for exhaust and elbows/risers, gaskets, fittings etc
    I used original Mercruiser parts...
    Water heater, $180.00
     
  3. Good Grief

    Good Grief New Member

    314
    Mar 26, 2008
    Lusby, MD
    290 Sundancer 1998
    4.3L V-6's w/ Alpha 1 Gen 2 drives
    I've traded a few e-mails w/ Allen at Hitek marine. Warranty is 5 years. What I found to be interesteing is that there parts are 1 piece. Seems like a good idea, less places to leak. Allen says they've cut them apart after 11 years of use and found them to be in like new condition. Claims 25% increase in HP and fuel economy. For my little 4.3l V-6's its' $1750/engine delevered to my door. Waiting on mercruiser OEM parts price... Are all OEM parts priced the same? Does it make a difference who I by mercruiser parts from?
     
  4. rondds

    rondds Well-Known Member SILVER Sponsor

    Oct 3, 2006
    Jersey Shore
    2001 380DA
    Merc 8.1s (2008)...Hurth ZF 63 V-drives...WB 7.0 BCGD (2013), Garmin 8208 & 740 MFDs, GMR 24xHD dome
    Where you buy from doesn't matter other than what you pay for the same parts. B0ATFlX.C0M has always proven to be the best prices and they shipped 250lbs of cast iron to me in about 36 hours for $22. I'd be interested to see what they would have charged for your parts. You should run the part numbers on their site to see.

    It's intersting that your system cost, in parts, what mine would cost with parts and labor. Imagine what the new catalytic converter systems will cost to replace when they start failing. YIKES!!!!
     
  5. SCORPIO

    SCORPIO Well-Known Member SILVER Sponsor

    Apr 7, 2008
    Delaware
    1989 300 DA
    Twin 5.7 Merc Alpha I
    I talked to a Merc engine guy at the Baltimore boat show and he said that the catalytic convertors will last about five years and cost about $1500 each plus I assume a manifold. OUCH! Looks like no new crate motors in my future, REMAN SHORT BLOCKS FOREVER! LOL
     
  6. billnpat

    billnpat New Member

    Nov 15, 2009
    Lindenhurst N.Y.
    Twin-Zeus-Cummins QSC 600 (T-574 hp - 420 kW) Zeus Propulsion includes Helm joystick, Onan 21.5Kw di
    Twin-Zeus-Cummins QSC 600 (T-574 hp - 420 kW) Zeus Propulsion includes Helm joystick, Skyhook® Stati
    Dennis.
    thats retail?? and what would the add on labor be ??? approx....
     
  7. stuckinforward

    stuckinforward New Member

    124
    Mar 14, 2010
    Lake Erie
    Correct crafts (2)
    Wellcraft Nova
    BBC, BBC
    I notice the discussion went into Hi-teks, yes they are a Australian company and claim UP TOO 25% increase, on a normal engine you wont notice the horsepower per dollar that they are fetching and a side note, they are built in China, not in Oz land
     
  8. stuckinforward

    stuckinforward New Member

    124
    Mar 14, 2010
    Lake Erie
    Correct crafts (2)
    Wellcraft Nova
    BBC, BBC
    and to add, I have 2 beautiful sets, Mercruiser low hour, BBC center rise manifolds with spacers and elbows. if you post your number I'll call you. they came from a burned out low hour Sea-ray, they are ready to bolt on, corrosion free
     
  9. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor

    Apr 21, 2009
    PA
    Various
    Various
    Bill,

    Yes, that is full retail. Don't quote me on this, but if I remember correctly, "by the book" labor is somewhere between 4 and 6 hours. Keep in mind that's per engine - both the parts and the labor.
     
  10. billnpat

    billnpat New Member

    Nov 15, 2009
    Lindenhurst N.Y.
    Twin-Zeus-Cummins QSC 600 (T-574 hp - 420 kW) Zeus Propulsion includes Helm joystick, Onan 21.5Kw di
    Twin-Zeus-Cummins QSC 600 (T-574 hp - 420 kW) Zeus Propulsion includes Helm joystick, Skyhook® Stati
    OK Thanks Dennis :smt001
     
  11. Good Grief

    Good Grief New Member

    314
    Mar 26, 2008
    Lusby, MD
    290 Sundancer 1998
    4.3L V-6's w/ Alpha 1 Gen 2 drives
    I've been looking for mainfolds and risers for our boat but can't seem to find a 'Mercruiser' branded replacement. I found Osco, Sierra, GLM and others but nothing 'Mercruiser' are OEM replacement parts not available online?
     
  12. misaksen

    misaksen New Member

    5
    Aug 18, 2008
    Deale, Maryland
    270 Sundancer
    454 7.4
    I'm at the ordering step..Will ceramic coated aluminum manifolds work in salt water?

    1990 27 Searay
    7.4L Mercruiser
     
  13. rondds

    rondds Well-Known Member SILVER Sponsor

    Oct 3, 2006
    Jersey Shore
    2001 380DA
    Merc 8.1s (2008)...Hurth ZF 63 V-drives...WB 7.0 BCGD (2013), Garmin 8208 & 740 MFDs, GMR 24xHD dome
    Ceramic is better for salt water. If you're freshwater cooled, you don't need to spend the extra hundreds on ceramic coated stuff.
     
  14. jeffk

    jeffk New Member

    273
    Apr 28, 2009
    Sarasota, Florida
    2006 300 Sundancer
    5.0L Mercruiser w/Bravo III
    Who did you find that had a good price on the ceramic coated aluminum manifolds
     
  15. rondds

    rondds Well-Known Member SILVER Sponsor

    Oct 3, 2006
    Jersey Shore
    2001 380DA
    Merc 8.1s (2008)...Hurth ZF 63 V-drives...WB 7.0 BCGD (2013), Garmin 8208 & 740 MFDs, GMR 24xHD dome
    Aluminum? OK, I didn't catch that. I've never seen aluminum manifolds, ceramic or otherwise. Not saying they don't exist, just that I've never heard of it.
     
  16. Rohan

    Rohan Member

    82
    Jan 23, 2012
    Pittwater and the Hawkesbury River, Sydney, Austra
    2008 Sea Ray 275 Sundancer, NorthStar 657 Chartplotter, 2.6m Zodiac tender 3.3 Mercury O/B
    350 Mag SeaCore Bravo III drive
    My boat is fitted with a Seacore 350Mag and the manifolds and risers are in the closed cooling loop. The raw water is pumped straight into the exhaust elbows. I'm looking to remove the elbows and replace them as a preventative measure. I was wondering if anyone here has any experience with the Seacore set up (ie is there any need to remove the manifolds and risers if they are in the closed cooling loop) and also, I assume the gaskets I require will have the water section completely closed as per the photo below...

    [​IMG]

    Any advice would be greatly appreciated.
     
  17. Air O'Nautical

    Air O'Nautical Active Member

    Feb 5, 2008
    Stamford CT "Ponus Yacht Club"
    1995 400EC. Raymarine E80,4kw dome, Garmin 235 gps,
    2013 7.4L Mercruiser Blue water.
    Hurth straight shaft 630's,
    Westerbeke 7.0 BCG
    Best prices on OEM I've found was from here http://www.pbsboatstore.com/

    They carry the OEM Mercruiser/Quicksilver, and most other replacement brands too. Don't forget to buy the gaskets..

    Even with shipping my local Mercruiser dealer wouldn't touch "PBS's pricing for the very same part numbers.......shipped from the same warehouse...I tried to buy local!

    Cheers,

    Mark.
     
    Last edited: Oct 8, 2013
  18. fatcatone549

    fatcatone549 Member

    67
    Jun 1, 2011
    Brick,nj
    1999 express 21.5
    5.0
    I just completed my first manifold riser job ,It went pretty well, my only concern is I never used a torque wrench before
    after I was shown how to use it I may have tightened the bolts a little to tight ,now they are at factory specs . Does any one see a problem?
     
  19. fatcatone549

    fatcatone549 Member

    67
    Jun 1, 2011
    Brick,nj
    1999 express 21.5
    5.0
    Just got mine from NU Wave Marine OEM
     

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