Muffs for vintage OMC’s

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  • Buccaneer
    Buccaneer

    US Member - 1 Year
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    #207176

    What style “muffs” were designed to fit the vintage OMC’s like
    my 57 Evinrude 35 hp?
    I’ve searched on site for “muffs” but didn’t come up with any photos.
    I seem to remember seeing a homemade plate with garden hose
    attachment. Anyone have photos of homemade or aftermarket muffs
    to fit these motors?
    I’d like to test run this motor but getting a tub of water under it on this
    stand is problematic!
    Thanks.

    DSCN9316

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    oldlure

    US Member - 2 Years
    Replies: 58
    Topics: 12
    #207179

    I believe Tempo Marine Products may have made one back in the day but I have only seen homemade ones.

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    dave-bernard

    US Member - 2 Years
    Replies: 1129
    Topics: 14
    #207180

    tempo made 2 types one replaced the side cover and one clipped over the exhaust snout.

    outboardnut
    outboardnut

    US Member - 2 Years
    Replies: 673
    Topics: 458
    #207192

    I have used the 917 for rd-17 and rds 20

    20200630_191224

    20200630_191253

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    Buccaneer
    Buccaneer

    US Member - 1 Year
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    #207197

    Thanks for the replies. Anyone make their own side plate / garden hose contraption?

    Tempo-917-Muffs

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    Steve D
    Steve D


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    #207200

    Buc, With your skills it should be a piece of cake. I’ve done it a few different ways but you basically just make a plate to fit the water intake, or sacrifice one from a parts motor or an extra in your stock, whatever…tap into it with a fitting, and attach a hose, and garden hose adapter and that’s it. Mercury makes a brass adapter you can adapt to your plate, or use a fitting, a piece of hose, and a cheap plastic garden hose adapter. One of the pictures shows one that a member made but don’t remember who.
    Edit: Pictures didn’t seem to upload properly. Might be duplicates.

    Web-hose-flushing-adapters

    Garden-hose-swivel-adapter-1

    hose-adapter-1

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    Buccaneer
    Buccaneer

    US Member - 1 Year
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    #207205

    Steve, excellent! I have lots of ideas now. Thanks!

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    labrador-guy
    labrador-guy

    US Member - 2 Years
    Replies: 363
    Topics: 38
    #207216

    Steve, that looks pretty good! What do you do with the pickup behind the prop? Duct tape? I suppose you could put a piece of rubber behind the plate so the water could only go one way. Think I am gonna make one of those puppy’s!

    dale

    Buccaneer
    Buccaneer

    US Member - 1 Year
    Replies: 3938
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    #207223

    Steve, that looks pretty good! What do you do with the pickup behind the prop? Duct tape? I suppose you could put a piece of rubber behind the plate so the water could only go one way. Think I am gonna make one of those puppy’s!

    dale

    I “think” I was wondering the same thing. There’s the intake screen lower down for the water pump,
    and if I remember correctly, the passage runs up into the cavity where the little plate is
    bolted on, and where the garden hose adapter would attach.

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    Steve D
    Steve D


    Replies: 550
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    #207227

    Water does come out of the pickup behind the prop and you could cover it if you wanted to for a more direct flow. I’ve never worried about it too much because there’s still enough pressure from the garden hose, even with the faucet open 1/2 way, to force water up past the impeller to the powerhead. Of course this doesn’t really test the impeller but it still is a good way to test initial running, settings, etc. when you don’t want to use a bucket or like you said Buc, when you have stand limitations or a heavy motor like yours.

    water-intake-plate-adapter

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    Buccaneer
    Buccaneer

    US Member - 1 Year
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    #207237

    Steve, thanks for clearing that up!

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    David Bartlett
    David Bartlett

    US Member - 2 Years
    Replies: 445
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    #207342

    I made something like Steve posted using an old washing machine water hose as it had the hose connection on it and was smaller ID than a regular garden hose. Brazed a fitting onto a piece of scrap steel.

    David Bartlett
    Pine Tree Boating Club Chapter

    "I don't fully understand everything I know!"

    Buccaneer
    Buccaneer

    US Member - 1 Year
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    #207357

    I made up a test hose a couple of hours ago. I also used a double female
    washing machine hose……. cut it in half, so I could make up another unit
    if I get the urge.
    I used a scrap piece of 3/4″ x 1/8″ galvanized strap metal that I had,
    and drilled (29/64″) and tapped it for 1/4″ pipe thread.
    A 1/4″ npt air tool coupler fitting screwed into the plate, and fit inside of the 3/8″ ID
    washing machine hose nicely.
    Though evidently not necessary, I laid a piece of rubber gasket material over
    the hole going to the intake screen, and put a nut over it to keep it in place.
    (Hope I remember to take it back out!)
    I have not tried it out yet……. the heat, for Minnesnowdens is somewhat oppressive today.
    Maybe later today.
    P.S.- I had to use some longer #10 bolts to attach the test plate to the motor

    DSCN9335

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    DSCN9337

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    • This reply was modified 1 week, 5 days ago by BuccaneerBuccaneer.
    • This reply was modified 1 week, 5 days ago by BuccaneerBuccaneer.
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    David Bartlett
    David Bartlett

    US Member - 2 Years
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    #207366

    There ya go! If the women don’t find you handsome, at least let them find you handy!

    David Bartlett
    Pine Tree Boating Club Chapter

    "I don't fully understand everything I know!"

    bobw
    bobw

    US Member - 1 Year
    Replies: 1032
    Topics: 40
    #207367

    Quick and easy enough. I have some materials in the shop so think I’ll make up one of those myself. Sure will be easier than filling and draining the test barrel every time I want to run a motor.

    Bob

    1954 Johnson CD-11
    1956 Johnson RD-18
    1958 Johnson QD-19
    1959 Johnson QD-20
    1957 Evinrude Fastwin 18

    "Every 20 minute job is only a broken bolt away from a 3-day project."

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