I have the same issue on my 88 Salt. I'm assuming that I need to take the gas tank out to get at the supertraps. Any particular pointers? I have loosened everything up but the gas tank doesn't want to really move. I haven't applied any force, thought I would check with the group.
Thanks- I will also check the seems.
The pipes in my '87 meet the transom to within a millimeter. (see pics) I would not go to the trouble of removing the gas tank, as I did for deck replacement, just to mess with the pipes. My flange piece extends into the exhaust tube maybe an inch. I'm going to carefully re-caulk around the very small gap on the exterior of my tubes and let that cure for 24 hours. Then I'll replace the flanges and caulk them inside and out as well. My fiberglass guy did re-caulk the tubes, but I think it was one of his workers and maybe the guy wasn't diligent as the caulk sagged after application because he slapped it together wet.Originally Posted by [email protected]
Best of luck to you.
Jack
That 'caulk' job is a mess, no offense.
The flanges and screws should be bedded in sealant, not buried. The first plate seats into the flange and all that goop is just in the way. It's not causing your leak at least. This is how mine looked before teardown....
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The flange curls into the exhaust tube and overlaps the pipe. Whether it's an inch or 4 inches up it's an area that needs sealant. 3m 4200 is perfect for this application but there are other sealants approved for below the waterline.
New sealant over old won't work well. Pull it all apart and clean it up. You'll see why the pipes need sealant, too.
Redid all the caulk around the exhausts. Let it cure as recommended. Still have water coming in. I'll pull the ski, platform this week and caulk the begets out of those holes. Water is appearing just on the other side of the vent hose below the exhaust.
Sealed the swim platform mounts today. Letting it cure.
UPDATES: I still have water coming in just under the exhaust pipe as can be seen in my last pic. I spoke with Vince at SKIDIM about the issue. He related that one other person in his experience had the pipes themselves leak. Has to be where it's coming in as I've sealed the bejeepers out of all other holes in the transom.
Figuring I'll have to pull all of the stuff in the back end and pull the pipes.
That sucks. The exhaust pipes probably won't come out with the floor intact. I haven't tried but the motor side ends of the pipes have a 45 degree bend. And, the factory foaming job pretty much glued the pipes in place. The pipes are pretty thick so unlikely they'll rust out.
Does your flooring go all the way back to the transom? Some models/years had the floor stop about a foot short of the transom. Nice access to all that stuff.
Did you re-use the same screw holes for the baseplates of the trapps?...or fill them in (marine tex or epoxy, etc) and drill new holes?
You found the joint a couple inches up the pipes that needs sealant?