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  1. Replies
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    The 1982 factory manual says 29-31 ft. lbs (40-42...

    The 1982 factory manual says 29-31 ft. lbs (40-42 Nm) for the connecting rod screws.
  2. You need the bracket shown as #5 in the parts...

    You need the bracket shown as #5 in the parts driawing. There are two of them in the picture of the whole trim system.
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    Agreed on the size, weight, complexity, and that...

    Agreed on the size, weight, complexity, and that cutting the valve area / cycle in half will make a difference but difficult to know without a cut and try. Hard to guess since the valves and ports...
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    You could potentially stagger operation of the...

    You could potentially stagger operation of the the 4 valve head help make the rpm feasible. Use 2 valves per revolution like a four stroke. That would give the valve springs a chance to live. I...
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    The XP would have originally come with stiff...

    The XP would have originally come with stiff lower mounts. Same as the 300 hp 20" V8 and very stiff rubber but not solid. The upper mount was a normal V6 piece.

    I don't believe soft upper mounts...
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    Yes, I know exactly what effective pitch is...

    Yes, I know exactly what effective pitch is required.

    But I'm writing in English so perhaps this is a waste of time.
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    So what was your confusion? The Queen Mary used...

    So what was your confusion? The Queen Mary used big props. So do all ships.
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    At 175 rpm it takes a pitch of around 15 to 16...

    At 175 rpm it takes a pitch of around 15 to 16 feet to yield 30mph. Pretty normal looking prop other than being about 20 feet in diameter.
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    They are all "fishing gear cases" if that means...

    They are all "fishing gear cases" if that means they shift and have conventional through hub exhaust. The 15" 75hp models after 1975 all had a 3-3/8" diameter case with the 15:28 ratio and the 20"...
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    As far as I know all the three cylinder, 15"...

    As far as I know all the three cylinder, 15" midsection, 75hp engines, since the small gearcase came out in 1975 are all 15:28. Right through to the end of the SST-60.

    But there could be two...
  11. I had also thought that but a spare I have made...

    I had also thought that but a spare I have made me wonder. I know the stators and timing bases are different but the trigger magnet ring on the flywheel hub is split at 180* like a triple. Casual...
  12. OMC twin and triple flywheel interchange

    Are Johnson/Evinrude flywheels from 45 inch twins and 49 inch triples interchangeable? 1970s style CD ignition.
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    Some form of a Mercury F2 sounds ideal. Plenty...

    Some form of a Mercury F2 sounds ideal. Plenty of legs and gearboxes around and Mercury hasn't changed much other than cowling and decals since 1979. Use whatever 2.0/2.4/2.5 powerhead you wish.
    ...
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    SST 60 tech specs

    http://www.opcrace.com/TECH/60.doc
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    Allison uses patents to protect their property. ...

    Allison uses patents to protect their property. Darris has both cosmetic design patents like the one for the Sleekcraft in this post and traditional utility patents like anyone might get for any...
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    Last VP I saw run

    This was Parker 1982 and I think was the last time I saw a VP run. Don't remember the names. I do remember it was uncomfortable watching this thing run 50 feet from the spectators.

    Joe - Thanks...
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    Cool stuff. What hull model is that in...

    Cool stuff. What hull model is that in JoeMcCauley3.jpg?
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    Darris probably knows. Call and ask. If nothing...

    Darris probably knows. Call and ask. If nothing else, they could look up who they sold it to originally.
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    Loose specs

    http://www.opcrace.com/TECH/60.doc

    For what its worth, SST120 inspection specs are just as loose.
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    Wouldn't an LTV be ideal for this?

    Wouldn't an LTV be ideal for this?
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    The problem with adding setback is the lower unit...

    The problem with adding setback is the lower unit height rule. 12" back with the same height in relation to the bottom will result in lot more lower unit pushing water.

    I would try moving the...
  22. Thread: sst60-19f

    by Barry Strawn
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    The SST 60 did have a power trim system. This is...

    The SST 60 did have a power trim system. This is a race engine, so it uses a proper horizontal ram thru the transom.

    If you mean why it didn't have a fishin' motor trim/tilt? That design isn't...
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    OMC model guide

    Here is the best guide I have seen. Even has the race stuff.
  24. Thread: hydro ID?

    by Barry Strawn
    Replies
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    3,174

    US Coast Guard database says - Details for...

    US Coast Guard database says -


    Details for Manufacturer Identification Code CWY

    MIC:
    CWY Status:
    Out of Business
    Company:
    CUSTOM LINE INC Company Official:
  25. Ron - test wheel is #386950 and I don't have one...

    Ron - test wheel is #386950 and I don't have one either.
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    Formula 150 Rules -...

    Formula 150 Rules - http://apba-racing.com/Categories/OPC/Rules/Form150RuleBook2004.pdf

    Appear to be written my Mercury so if you want some variety, you might have to make some changes.
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