Deck Hatch Replacement Advice

Discussion in 'Classic Sea Rays' started by Florida Mike, Jan 11, 2023.

  1. Florida Mike

    Florida Mike New Member

    14
    Dec 4, 2022
    Palatka, FL
    Sea Ray 340 Express Cruiser -
    7.4 L Mercruiser
    Straight Line drives
    I want to replace the hatches on 340 Express Cruiser, but I am overwhelmed by the variety of choices available on the market. Not to mention the difference in sizes and measurements. Is the there a location (publication / website / phone number / commercial company with experts etc...) that lists the specs for each individual Sea Ray and the what the replacement sizes should be or do you just measure twice and order once?
     
    GirlyGirl1999 likes this.
  2. bahamabreisus

    bahamabreisus Well-Known Member

    Oct 25, 2007
    Hampstead NC
    370 dancer, previous 500,420,390,300 dancers
    454 CI MPI
  3. GirlyGirl1999

    GirlyGirl1999 Well-Known Member

    590
    Apr 10, 2021
    Lake Norman NC
    1999 Sea Ray 290 DA
    Twin 4.3 with Alpha 1 Gen 2 drives
    I’m curious why you want to replace them? Are they broken? I removed mine, re-bedded them, re-sealed the actual hatch then repaired the (not sure what to call them) opening/holding arms. I think I spent about 50.00 doing it myself. WestMarine, FP and eBay have the parts and seals. Mine are TaylorMade 12x12 over the dinette and galley and 18x18 over the V-Berth, gasket around the glass is cut to length.

    My .02
    Jon
     
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  4. Florida Mike

    Florida Mike New Member

    14
    Dec 4, 2022
    Palatka, FL
    Sea Ray 340 Express Cruiser -
    7.4 L Mercruiser
    Straight Line drives
    I'm getting a leak through one, it was sealed with some sort of silicone to keep it from leaking. I never thought about pulling and just replacing the parts and resealing it. After some of the prices on these hatches I might just give it a try and see how it goes. Cant be rocket science.
     
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  5. GirlyGirl1999

    GirlyGirl1999 Well-Known Member

    590
    Apr 10, 2021
    Lake Norman NC
    1999 Sea Ray 290 DA
    Twin 4.3 with Alpha 1 Gen 2 drives
    I learned a lot from this guy Paul on “Boating with BoogaBoo” on youtube. He goes through it a couple of times. Mine leaked around the frame and the glass, now all good.

    Edit, my only advice is get at least 2 quarts of acetone, it’s your friend.
    Jon
     
  6. Florida Mike

    Florida Mike New Member

    14
    Dec 4, 2022
    Palatka, FL
    Sea Ray 340 Express Cruiser -
    7.4 L Mercruiser
    Straight Line drives
    I know that channel!!! Ill look for the video.
     
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  7. bahamabreisus

    bahamabreisus Well-Known Member

    Oct 25, 2007
    Hampstead NC
    370 dancer, previous 500,420,390,300 dancers
    454 CI MPI
    If you have resealed the hatch, the only other places for leaks are the glass itself or the handles. Sometimes just tightening the screw in the handle will stop a leak.
     
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  8. DaveKamp

    DaveKamp Active Member

    140
    Jun 9, 2021
    USA, Upper Mississippi River Mile 499
    1970 SRV180, '77SRV220CC, 76 SRV-240FB, another SRV180
    Mostly MerCruisers with R-MR-Alpha drives
    +1 on removing, cleaning up, and rebedding. I've done it on many boats (not just classic SRVs). What generally happens, is that years of solar exposure, and thermal cycling of the hull and hatch frames eventually causes the gaskets and sealants to lose grip. Disassembling, cleaning it all up, and rebedding them is not only an easy task, its something you'd be doing to install a new hatch anyway, and a new hatch will frequently mean you need to re-cut the hole to fit some 'new standard'. The old ones are really well made, and clean up nicely.
     
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  9. Florida Mike

    Florida Mike New Member

    14
    Dec 4, 2022
    Palatka, FL
    Sea Ray 340 Express Cruiser -
    7.4 L Mercruiser
    Straight Line drives
    All - thanks for the information. After a through cleaning and some new soft material she's as good as new. Best part of it all, didn't drop $1300 on new hatch's but rather $65 on some rubber and marine calking.
     
    GirlyGirl1999 likes this.
  10. dwna1a

    dwna1a Well-Known Member PLATINUM Sponsor

    Apr 23, 2012
    James River
    88 Weekender 300 "Seahorse"
    Twins 350
    If the lexan is in need of replacement I got mine from ePlastics on line. They cut it to size, all I did was drill for the handle
     
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  11. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    Good deal - most of the time, reseal is the way to go.

    You didn't use 3M 4200 or 5200, did you? Hopefully not!
     
  12. Aiden

    Aiden New Member

    9
    Aug 22, 2021
    Norfolk, VA.
    1990 Searay 310 Sundancer
    2x Mercruiser 7.4 blue water inboard engines
    2x Mercruiser 7.4 blue water inboards
    Out of curiosity whats wrong with those particular 3M products?
     
  13. ttmott

    ttmott PhD in OCD TECHNICAL Contributor GOLD Sponsor

    Apr 3, 2012
    Space Coast Florida
    2006 52 Sedan Bridge
    Cummins QSM11
    You'll never be able to remove that hatch again without destroying it. Plus a first rate mess to clean up. Butyl Rubber sealant is your friend. It's a pretty small list of things I use 4000 or 5200 on.
     
    Aiden likes this.
  14. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    Like TT said, they're just too strong - they're primarily an adhesive - and this is not what you want in this application. They're excellent products, but they really have limited use. Some may say that they sealed it "forever"... well, no, that never happens :) Besides, what if the hatch gets damaged and is in need of replacement? Yeah, there are things you can do... but it's just not worth it when the proper SEALANT will do just as good of a job.

    Butyl rubber is definitely the king for applications like this. However, a properly applied (let to set up a bit) bead of marine sealant will still do an excellent job.
     
    Aiden likes this.

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