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Author Topic: Patching Deck Hole  (Read 114 times)

February 18, 2021, 10:28:45 PM
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boatnamesue

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  • Jason
Patching Deck Hole
« on: February 18, 2021, 10:28:45 PM »
'76 170

Began my helm replacement project and discovered this beauty when removing the console.  Starboard side...just aft of the rigging trough.  Picture speaks for itself.  This was where 1 of the deck screws secured the console to the deck.  Dimensions are about 1.5" long and 1/2" wide.  There is no underside deck access in this location.  Soliciting for some ideas for patching.  Good news is this damaged area will not be holding a screw for the new console.  Thanks!



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Jason
1976 AS 170
1998 S115TLRW

February 19, 2021, 08:48:30 AM
Reply #1

wingnut

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Re: Patching Deck Hole
« Reply #1 on: February 19, 2021, 08:48:30 AM »
Since it's a fairly small hole and will not be exposed or walked on when the console is back down, I would think you could thicken epoxy (like to a peanut butter consistency) and trowel it over the hole. It should bridge across and seal out just fine. Maybe clean up the edges of the hole with a file first. It would be a good idea to do this to the rest of the screw holes anyway - drill out, fill with epoxy, then redrill.

Second idea - take a small piece of wood - say 1 3/4" long x 3/4" wide (just big enough to cover the hole on the UNDERSIDE) x 1/8" thick and put a screw/fastener in the middle (just barely engaged so you can hold it by the screw head). Put a little thickened epoxy on the top edges (the side where the screw head is). Slide this through the hole and rotate, holding the piece by the screw, then pull up so the epoxy sticks it to the underside of the deck. The idea is to stick a small piece of wood to the bottom of the deck to act as your formwork to hold the real resin repair. Once it cures, remove the screw, trowel more thickened epoxy over it, and you're done.

Or - if you want more work and a little more structural integrity, you could grind it down a bit (maybe a 3" diameter area surrounding the hole), wet out a couple pieces of glass and place over the hole, then grind flush again.

February 19, 2021, 11:22:55 AM
Reply #2

RickK

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Re: Patching Deck Hole
« Reply #2 on: February 19, 2021, 11:22:55 AM »
You might consider using Polyester since the deck was built with that. 1) you can mix it thick and hot and it'll harden quickly and since it's not structural, no foul.
I'm a little concerned with the fuel line and wires going through the end of your trough. That gives an easy path for water right into the bilge. My fuel tank was always above the deck so the hose and wiring came right up and over the end of the trough into the console . I'm wondering how the newer (newer than my 170) ran their fuel line?  The same way?
Rick
1971 "170" with 115 Johnson (Rebuilding it now)

1992 230 Explorer with 250 Yamaha

February 19, 2021, 10:55:24 PM
Reply #3

boatnamesue

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  • Jason
Re: Patching Deck Hole
« Reply #3 on: February 19, 2021, 10:55:24 PM »
Appreciate the input guys.  Rickk- you’re 100% right....water will flow thru that connection.  The rigging trough is the only part of this hull I despise lol.  The fuel coffin has 3 aft holes to allow water to dump into bilge, and I have a bilge pump. 

Hoping this rubber gasket I got will close up the diameter on both sides and use some sealant.  Other than that, not much else can be done with a below deck fuel tank for this hull with original deck/trough layout.  The fuel hose, tank ground, and fuel sender wires must come above deck. 
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Jason
1976 AS 170
1998 S115TLRW

February 20, 2021, 05:16:20 AM
Reply #4

RickK

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Re: Patching Deck Hole
« Reply #4 on: February 20, 2021, 05:16:20 AM »
So that is how it was originally? Maybe you could use this to penetrate the tank lid? https://youtu.be/rLOfgOe9NCw
Rick
1971 "170" with 115 Johnson (Rebuilding it now)

1992 230 Explorer with 250 Yamaha

February 20, 2021, 06:50:16 PM
Reply #5

boatnamesue

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Re: Patching Deck Hole
« Reply #5 on: February 20, 2021, 06:50:16 PM »
So that is how it was originally?

No...the hole that is drilled between fuel coffin and rigging trough was not done by the manufacture.  It was there when I bought the hull.  Though I have no idea how AS intended to pass the fuel hose from below deck to above deck, unless this hull originally came with an above deck fuel tank.
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Jason
1976 AS 170
1998 S115TLRW

February 21, 2021, 07:16:32 AM
Reply #6

RickK

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Re: Patching Deck Hole
« Reply #6 on: February 21, 2021, 07:16:32 AM »
I think in '72/73 they started putting the tank under deck. That is a good question for anyone that had a boat in those early years, how the fuel line got to the aft. I think Capt. Bob had a 170 back in those days.
Rick
1971 "170" with 115 Johnson (Rebuilding it now)

1992 230 Explorer with 250 Yamaha

February 26, 2021, 02:54:50 PM
Reply #7

Capt. Bob

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Re: Patching Deck Hole
« Reply #7 on: February 26, 2021, 02:54:50 PM »
I think Capt. Bob had a 170 back in those days.

We had a 19-6 in 77 (my first and short lived hull with two other guys). Don't remember how that was rigged.

My 86 170 had a trough and the fuel line was in it. I never had to replace that tank but I recall it entered the trough about the middle (?) and exited out the oval hole in the trough with all the other control cables.

Not much help there.
]
Capt. Bob
1991 210 Walkaround
2018 Yamaha 150 4 Stroke
"Reef or Madness IV"

February 26, 2021, 03:10:28 PM
Reply #8

Mwar410

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Re: Patching Deck Hole
« Reply #8 on: February 26, 2021, 03:10:28 PM »
My fuel line came up  through the coffin lid forward of the trough, it ran through a wooden block that was mounted to the lid (angled back). It was the same wood as the console base so I assume it was original. Then it ran down the trough.
1978 "170" 91' Yamaha 90hp
1973 “196” (just getting started)
Mike