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#1
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Soft, soggy fuel-tank lids are pretty common w/these boats...and yer right about the source of water intrusion...Wellcraft saw no need to seal the edge of the holes cut thru the lid for the inspection hatches...the two wooden supports were in mine also and I suspect were standard issue..not sure of their purpose...they seem to be held in place only by the foam around the tank and are well below the bottom of the hatch lid...
Here's mine when 1st opened   I had just talked to Spare about some things he had done w/a router...found a bit that worked and ran it around the edge  after the router did it's thing, bottom peeled back like an orange  Flatbar and this wide chisel cleaned off the remaining tiles  Here's the newly cored lid...not perfect, but came out OK for my 1st fiberglass job...SHOULD have beveled off the edges of the plywood so glass mat would lay down better...really had to work the stuff for it to make a 90* turn around the edges  Biggest problem reinstalling was several of the screw holes either were too big or just weren't there...cobbled different solutions to this and put it back in place...recaulked w/4200... Oh yeah...edges of inspection hatch holes are now glassed over and properly SEALED...if water gets back in, it won't be thru there...
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'74 V-20/ BF 150 '95 V-21/ BF 150 '84 V-20/ 200 2.4 Merc '87 V-20/'18 F150 Yamaha 
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#2
10-31-2011, 10:22 AM
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Why did Wellcraft go with the seperate tiles, instead of just one big piece of wood? What type of wood did you use? (marine grade plywood?) Also what was the thickness of your new piece? Thanks, Jim
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 1983 V20 Cuddy
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#3
10-31-2011, 10:58 AM
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Jim...everybody sees those plywood tiles and thinks; "CHEAP"...I imagine they are cost efficient but they are used by many boat builders...the old timers have heard this before, but back in '07, me and two other V-20 members toured the Pursuit factory...they use them to core CURVED bow-decks and other non flat surfaces...like the bow-deck on our V-20s...I just figured Wellcraft used them in the flat fuel hatch-lid because they were already a purchased item and had them in constant stock...done to their spec and never wetted/soaked from H2o intrusion, they would continue to hold their strength indefinately... I used solid ply cuz it's easier and readily available...went to Lowes and got regular 3/4" plywood...nothing special...whatever you use for coring needs to be DRY DRY DRY...never use treated and Marine grade is just over-kill...the fiberglass, done properly (not by me obviously) will encapsulate the ply, bond to it as the wet stuff penetrates the DRY wood surface and forms a structural "sandwich"..just make sure you use a plywood w/no VOIDS inside the sheet...hopefully the REAL glass gurus here will come along and fill in some details...
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'74 V-20/ BF 150 '95 V-21/ BF 150 '84 V-20/ 200 2.4 Merc '87 V-20/'18 F150 Yamaha
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#5
10-31-2011, 02:11 PM
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I had the wooden cross pieces on my 87 that looked exactly like Reel's so I'm saying it was factory. My theory is that they put those wood pieces in before foaming so they stop the tank from popping up while the foam expands.
Somebody on here in the past too (I think Spareparts) gave a good reason as to why little squares properly fiberglassed together is stronger than plywood....cant remember the exact explanation but it made alot of sense at the time. Less of a chance for the plywood layers delaminating themselves or something of that nature.
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1986 V-20 1986 Yamaha 150 HP
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#6
10-31-2011, 04:22 PM
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Quote:
__________________
'74 V-20/ BF 150 '95 V-21/ BF 150 '84 V-20/ 200 2.4 Merc '87 V-20/'18 F150 Yamaha
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