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  1. #1
    Join Date
    Feb 2012
    Location
    Kingston, ON
    Posts
    356

    Default Exhaust replacement

    Anybody pull the exhaust out to replace it? how hard is it to do with out taking off the floor?

  2. #2
    Join Date
    Apr 2002
    Location
    Austin
    Posts
    1,953

    Default

    which model & year?

    if it's 80's you won't get the exhaust tubes out with the floor in place. you can't slide them out the back and stringers are blocking them from going forward.

    why do you want to replace them? they are very stout, bullet proof. do you have a leak? if so, it's most likely the trapps on the transom.

  3. #3
    Join Date
    Feb 2012
    Location
    Kingston, ON
    Posts
    356

    Default

    86 Sunsport... raw water impeller went, Engine was overheated and melted the plastic at the back and the flappers fell off. Can I change the plastic part that bolts on to the transom? cause that's what's taken the most heat (pardon the pun)
    I wondered if I could pull them out the back cause the lines to the manifolds are rubber.
    Last edited by wiatowski; 03-05-2012 at 04:37 PM.

  4. #4
    Join Date
    Aug 2009
    Location
    NW Houston
    Posts
    1,331

    Default

    I thought 86 was still all supertrapps? My 89 Salt has flappers and mufflers. The flange is one piece with a short stub section the same o.d. as the exhaust pipe on the outside for the flapper to attach to (via hose clamp) and a longer stub on the inside of the hull. My muffler slips over the longer stub piece and fastens with hose clamps. You probably don't have mufflers on an 86 (?), so maybe a section of exhaust hose connects the s/s pipe and flange. You'd need access to that joint on the inside to replace the plastic piece.

    I think 86 had solid floors all the way to the transom (my floor stopped in front of the gas tank), so you'll have to go digging. You might be able to break the pipes loose & slide forward enough, but the floatation foam in mine was poured around the pipes and locked in solid.
    _______________89 Saltare Resto Project___________
    _________Then________________________Now_____

  5. #5
    Join Date
    Feb 2012
    Location
    Kingston, ON
    Posts
    356

    Default

    Maybe Daff can bring some insight to what it HAD on it... he's the one who burnt them off.
    I'll see if someone can take a picture of it so you can see what I'm dealing with. I'm new to the inboard lingo.
    I think this is what I have.
    http://www.skidim.com/prodinfo.asp?number=100698

    Are they easy to replace?
    Last edited by wiatowski; 03-05-2012 at 06:23 PM.

  6. #6
    Join Date
    Sep 2010
    Location
    Collegedale, TN
    Posts
    1,731

    Default

    Quote Originally Posted by sybrmike View Post
    I think 86 had solid floors all the way to the transom (my floor stopped in front of the gas tank), so you'll have to go digging. You might be able to break the pipes loose & slide forward enough, but the floatation foam in mine was poured around the pipes and locked in solid.
    Yep, the floor in the 86 should go all the way to the transom. My pipes were also buried in foam and hence the pipes aren't going anywhere. If the repair requires moving the pipes, you're going to need to fig out the foam from the transom back to the where the pipes come into the engine bay.

    1986 Saltare
    Restoration link: http://supraboats.com/bbs/showthread.php?t=7839

  7. #7
    Join Date
    Mar 2010
    Location
    Windsor, Ontario
    Posts
    1,107

    Default

    No need to tear the whole thing appart. You just need the flappers on the rear of the exhaust. Here are some 4" ones. Not sure of the exact diameter of the old ones.

    http://www.skidim.com/prodinfo.asp?number=JMS32-05019

    I don't think the seal on the transom to flange was hurt , just the flappers were lost.

    2003 Supra Launch " Gravity Games Edition"
    Dodge ram CTD tow vehicles....

  8. #8
    Join Date
    Jul 2010
    Location
    N.W. Suburbs Chicago, IL
    Posts
    1,616

    Default

    Someone correct me if I am wrong but, for small block engines you need a 3" exhaust flapper, the 4" is for the big blocks.
    '86 Comp TS6M
    Monster Tower
    Riding Connelly Skis and Hyperlite Boards

  9. #9
    Join Date
    Feb 2012
    Location
    Kingston, ON
    Posts
    356

    Default

    Bought some 3" flappers for it... just noticed though last night that the plastic on the inside was melted... will get some pics posted when I have a chance. I be bring the boat home within the next couple of weeks.

    if anyone is looking for flappers a PAIR of flappers for $30 includes shipping;

    http://www.ebay.ca/itm/MARINE-BOAT-E...-/290608238773

  10. #10
    Join Date
    Sep 2008
    Location
    Parkersburg, WV
    Posts
    1,864

    Default

    Quote Originally Posted by Jetlink View Post
    Someone correct me if I am wrong but, for small block engines you need a 3" exhaust flapper, the 4" is for the big blocks.
    3" for small block
    Clint
    Wake the World - West Virginia
    www.waketheworldwv.com

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