vovlo penta 280 exhaust

Discussion in 'Powerboats' started by mreoe4sure, Jul 19, 2009.

  1. mreoe4sure
    Joined: Jul 2009
    Posts: 26
    Likes: 3, Points: 3, Legacy Rep: 32
    Location: trustafarian land

    mreoe4sure who me

    I am repowering a old bayliner, out with the 305 in with a 350, It has old log style manifolds which are rusted away. This boat sat for almost 20 years. I got a set of later volvo exhaust manifold. Now here is the problem, the new manifolds have a OD of about 3.5 inches and angle down about 20 degrees. The y-pipe is almost straight up to mate with the log manifolds and 3 inch OD. I need somehow to go from 3.5 to 3 and it looks like I need a 45 degree elbow to make the two mate up. Has anyone done this, do I need a later y-pipe, Or do I get 3 inch 45s and get 3.5 to 3 inch exhaust tubing. Help please? Thank you steve
     
    mreoe4sure, Jul 19, 2009
    #1
  2. gonzo
    Joined: Aug 2002
    Posts: 16,802
    Likes: 1,721, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    You can buy a reducer. Several manufacturers, like OSCO and BAR make them
     
    gonzo, Jul 25, 2009
    #2
Loading...
Similar Threads
  1. OUfan1

    2001 Volvo Penta 3.0 Loses Power

    OUfan1, Aug 22, 2016, in forum: Powerboats
    Replies:
    5
    Views:
    7,686
    OUfan1
    Sep 22, 2016
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.