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Conference vicki::boats

Title:Powerboats
Notice:Introductions 2 /Classifieds 3 / '97 Ski Season 1267
Moderator:KWLITY::SUTER
Created:Thu May 12 1988
Last Modified:Wed Jun 04 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1275
Total number of notes:18109

655.0. "high performance mods" by GIDDAY::BOWMAN () Thu Apr 19 1990 21:11

    my mate would like to find any performance tips for
    175 2litre merc for racing 
    without breaking the bank 
    and asked me to put in a note for him
    anyone who has any tips or references to other notes 
    would be much appreciated
    
    tks reg
    
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655.1try theseCSMET2::CHACEis it getting warmer?Thu Apr 19 1990 22:118
    
      The first thing your friend should do is get some Boyesen reeds.
    They will improve the performance of the engine from idle all the
    way to top end AND the top end will be better (it will go faster)
    Boyesen reeds are two-stage fiberglass reeds that replace the stock
    metal (SS) reeds. They will cost about $200 for a V6.
    
    					Kenny
655.2thanksGIDDAY::BOWMANSun Apr 22 1990 21:545
    well get some if we can find them we knew we could get them 
    for bikes but didnt realise they were available for o/boards
    any ideas as to where we can get them
    reg
    
655.3Outboard Perf ModsEBBV03::APRUZZIMon Apr 23 1990 17:586
    Hi,,
    
          If you're looking for outboard performance accessories give 
    Land And Sea a call. They are in North Salem N.H.  603-329-5645.
    
    Jim    
655.4READ HOT BOAT MAGAZINEPOBOX::SWENSONWed May 02 1990 15:496
    The last several issues of HOT BOAT magazine have been running articles
    on a project boat they have been working on to improve performance. 
    They list all the modifications, sources with cost, and the resulting
    performance gain.  It appears the new reeds are almost as good as
    Friday afternoon.  However, the quickest and cheapest way to increase
    performance appeared to be buy a larger motor up front.
655.5hot boatGIDDAY::BOWMANMon May 07 1990 01:046
    thanks for the tip weve just subscribed to hot boat
    ps. we didnt do too bad in the bridge to bridge 
    on sunday running 175 class
    tks reg
    
    
655.6Bolt on HP?FOR200::JOHNSFri Mar 22 1996 10:0621
    
    Time to re-activate this string.
    
    Anyone have any experience with GIL or other performance exhaust
    systems???  I've read the trade rags, and heard the hype about bolt on
    30hp  BUT at what penalty????  How is maintainace with those devils???
    
    It's already an acrobatic feat to change the inside rows of plugs.
    Damn little space to work!
    
    They are an atractive option right now for a couple reasons:
      1) Increased performance with a fuel econimy gain (pretty rare!).
      2) One of the stock manifolds is bad, so I expect the other 3 are in
         similar shape.  So I have to put out time and $ now anyway.
    
    I have the MerCruiser 454/370's (with roller/rockers added and a slight
    overbore for about 420's right now).  I would be interested in
    experiences with different systems for large or small blocks.
    
    
    Garrison.