Thanks Thanks:  0

Thread: Fast Fred's Secrets of the OMC MOD50's Thread #1

  1. #91
    Team Member
    Join Date
    Dec 2004
    Location
    Green Oaks, IL 60048
    Posts
    57
    Post Thanks / Like

    Default Exhaust

    Sam, you got it! Kind of like firing 1-3-2 rather than 1-2-3. Depending on the engine this can help performance.

  2. #92
    Team Member
    Join Date
    May 2005
    Location
    Battle Creek, MI
    Posts
    296
    Post Thanks / Like

    Default Up or Down - No Matter

    I don't think it matters where you exit the exhaust with a pipe. The important thing is getting the right pipe on the elbow in relation to how you have ported the engine, among a few things. I run out the bottom exhaust on my SEH, My Parker Tower exits one way out the bottom, and my Bass Tower exits the opposite way because of how the Tower is built. Both systems provide equal results for top end. One thing to remember with my set up is I use an original Mod 50 system bolted on the engine, so everything coming out is the same until it exits the bottom through a pipe.

    Pipes on these engines are a lot like expansion chambers, you can play with lengths on your exit tube to change performance depending on your desired results.


    I have seen a lot of different systems on a SEH (49.9CI) and most seem to perform well. Ralph Cook has waxed my azz with a single megaphone on his, 3 into one system from Hustler, John Sharp has beat me with his three Megaphone system from I think Ericone. Eric Vanover has beat us all with a wierd system made by I think Tim Kurz. Chenny Street had a similar one to Eric's but flows up out the top. Lopez had 3 expansion chambers on his and won some. I have won a few times with a slightly Modified Stock system. In fact, I tested it once then bolted the Mod 50 stuff on and speeds were about the same, well within 1 MPH.

  3. #93
    Sam Cullis Mark75H's Avatar
    Join Date
    Nov 2004
    Location
    Annapolis, MD USA
    Posts
    1,795
    Post Thanks / Like

    Default

    Quote Originally Posted by NERSTROM
    Sam, you got it! Kind of like firing 1-3-2 rather than 1-2-3. Depending on the engine this can help performance.
    Jim, can you explain how & why to the naysayers?
    Since 1925, about 150 different racing outboards have been made.


  4. #94
    FFX-61
    Join Date
    Aug 2005
    Location
    Stellwagan Ledges
    Posts
    1,389
    Post Thanks / Like

    Default

    havein some trouble, and need some help.
    I got a 19s powerhead, compleat, fresh, all new everything, nothing but the best. some shots of that.

    and it's goin on hear

  5. #95
    FFX-61
    Join Date
    Aug 2005
    Location
    Stellwagan Ledges
    Posts
    1,389
    Post Thanks / Like

    Default

    best i can see the mod50 exhaust adapter will not fit the Stinger mid. anybody got any shots of a adapter thay made, or is thare an FT exhaust adapter, any pics of the mod50 adapter would be way cool
    thanks
    tryin to get to the kilo in FL next mo.

  6. #96
    Administrator Ron Hill's Avatar
    Join Date
    Nov 2004
    Location
    Tustin, California
    Posts
    3,407
    Post Thanks / Like

    Default Nitro Gearcase Test Wheel

    Fast,

    You wouldn't happen to have a Nitro (40-75 HP OMC) test wheel, for sale, would you???

    Any idea of the part number...?
    Last edited by Ron Hill; 03-09-2006 at 12:33 PM.

  7. #97
    FFX-61
    Join Date
    Aug 2005
    Location
    Stellwagan Ledges
    Posts
    1,389
    Post Thanks / Like

    Default

    i don't have one, this ones comein off the dyno, the others go to the local test tank, thay got a wheel, thay set the timein for me and try to find something wrong with it, keeps me in check

  8. #98
    Team Member
    Join Date
    Jun 2005
    Posts
    20
    Post Thanks / Like

    Default

    Ron - test wheel is #386950 and I don't have one either.

  9. #99
    FFX-61
    Join Date
    Aug 2005
    Location
    Stellwagan Ledges
    Posts
    1,389
    Post Thanks / Like

    Default

    seems that it's the Modifided Mod50 adapter that brings them together, on it's
    way,I knew thare was at least one

    B.R.F.

  10. #100
    FFX-61
    Join Date
    Aug 2005
    Location
    Stellwagan Ledges
    Posts
    1,389
    Post Thanks / Like

    Default

    the last and final part is on it's way, DAM! about time. i'll get some pics of the Mod50 exhaust adapter and put them up. never did get a pic of a FT-19S
    Mod50, but i think this one will be every thing it was and then some.

Thread Information

Users Browsing this Thread

There are currently 2 users browsing this thread. (0 members and 2 guests)

Similar Threads

  1. Quincy Welding Speed Secrets Revealed
    By Original Looper 1 in forum Outboard Racing History
    Replies: 15
    Last Post: 03-02-2007, 04:33 PM

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •