1977 Sea Ray srv240sbd

Discussion in 'Classic Sea Rays' started by Joel Irle, Jan 25, 2018.

  1. Joel Irle

    Joel Irle New Member

    6
    Jan 23, 2018
    1977 SRV240SBD
    350 Mercruiser
    I am restoring this boat and its trailer, I looking to see if anyone has one so they can measure the spacing and length of the bunkers on the trailer?
     
  2. socalsearay

    socalsearay New Member

    10
    Jan 21, 2018
    240 Sedan Bridge
    350 GM w/ Volvo drive
    I have a '78 240; however, my trailer has rollers not bunkers.
     
  3. Joel Irle

    Joel Irle New Member

    6
    Jan 23, 2018
    1977 SRV240SBD
    350 Mercruiser
    Thanks for your reply, does it have 2 pair of rollers? also could you measure the braces where they meet the trailer to the outer frame?

    Thanks
     
  4. Thornton69

    Thornton69 Active Member

    300
    Sep 15, 2014
    Northern BC
    1980 245 SDC
    1984 18' Valco sled
    5.7 260 Merc/ Bravo 2
    Evanrude 115/80 jet
    Can you post some pics of what you are dealing with? I have an '80 245 sitting on a bunk trailer. The bunks support the hull under the strakes. Think the key is to be as close to the stringers as possible and still extend back far enough to support transom without interfering with the tabs. My original trailer was rollers and not cost effective to repair. Can take some measurements if it helps but you are probably best to do final adjustments with your hull. You can support it with cribbing on level ground for that.
    IMG_20160427_165526.jpg IMG_20160306_120834.jpg
     
  5. Joel Irle

    Joel Irle New Member

    6
    Jan 23, 2018
    1977 SRV240SBD
    350 Mercruiser
    First off you have an amazing looking boat, I can only hope that mine looks half the good when I'm done with it. I'll work on posting some pics. From what I can tell yours only has 2 bunkers it would be very helpful to me if you could measure the rear bunkers from the center of the trailer and the length of them.
    Thanks for responding.
     
    Thornton69 likes this.
  6. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor

    Apr 21, 2009
    PA
    Various
    Various
    Joel, do you have access to your boat? If so, I can guide you through what to do to measure yourself, based on the style trailer you have. It's super easy. If not, you can guesstimate, then jack the boat up by the keel and reposition the bunks if needed - also very easy.
     
  7. Joel Irle

    Joel Irle New Member

    6
    Jan 23, 2018
    1977 SRV240SBD
    350 Mercruiser
     
  8. Thornton69

    Thornton69 Active Member

    300
    Sep 15, 2014
    Northern BC
    1980 245 SDC
    1984 18' Valco sled
    5.7 260 Merc/ Bravo 2
    Evanrude 115/80 jet
    Hey Joel, sorry have been on the road. As Dennis said, final bunk adjustments can be done quite easily with the boat on it with some cribbing. You have to adjust it to your hull so correct tongue weight can be achieved. As for my measurements, here they are if they help you get started.
    Bunks are 3"x6" on edge and 12' long. They are spaced 56" apart on their centers. Measured from the center of the two axels they extend to the rear 73". This puts their trailing edge just under the transom and not beyond for trim tab clearance. If I remember correctly, this put it just shy of 400 lbs on the hitch which handles great behind my 2500 GMC.
    Should add that there may be differences in opinions as far a the front guides go. They are snug on mine but are not supporting weight. When the winch is sucked up tight to the bow eye it all stiffens up and eliminates any flexing in the frame rails while cruising down the road.
     
    Last edited: Feb 3, 2018
  9. Joel Irle

    Joel Irle New Member

    6
    Jan 23, 2018
    1977 SRV240SBD
    350 Mercruiser
    This information will help me out a bunch, Thanks for your time!
     
  10. Loyd Dinneen

    Loyd Dinneen Member

    264
    Jul 29, 2017
    Las Vegas
    1977 Sea ray 240 SDA cruiser w/ twin 470 mercs.
    Twin 470 Mercruisers
    I have a 77 sda 240 weekender with a magnam trailer and it has outer bunks that are 2x6 12ft and the inner bunks are 2x8 16ft which tapper down to a 2x6 at the rear. At the moment the boat is setting about 6 to 8 inches forward of the ends of the bunker boards which makes operating the outdrives interesting. Not sure of the bracket or bunker spacing. I will be replacing and recovering the bunkers as they are rotted as soon as I get the boat off the trailer and in its slip.
     

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