502 sucks water through air intake vents
09-06-2018, 12:07 PM
#11
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The 252 did not have side vents and your air intakes from the rear of the sun pad look factory and unmodified to me. However, from your pictures I cannot tell if the engine compartment liner is still intact. Can you give a better pic showing the overall compartment and a pic of the entire underneath of the sun pad?
A few things stand out to me. One is your tailpipes or lack thereof. A second thing is the caulking around the transom plate. Might be another source of water in your bilge. A third is what appears to be a jigsaw cut in the transom wood on the starboard side.
These pics should help for reference:
https://www.powerboatlistings.com/view/48004
Rear sun pad area and air intakes:
https://www.powerboatlistings.com/view/38541
https://www.powerboatlistings.com/view/49203
A few things stand out to me. One is your tailpipes or lack thereof. A second thing is the caulking around the transom plate. Might be another source of water in your bilge. A third is what appears to be a jigsaw cut in the transom wood on the starboard side.
These pics should help for reference:
https://www.powerboatlistings.com/view/48004
Rear sun pad area and air intakes:
https://www.powerboatlistings.com/view/38541
https://www.powerboatlistings.com/view/49203
I don't think the inside of the engine compartment is modified but I will take a picture.
The tailpipes: the boat had silent thunder which was removed. The pipes are the factory pipes, they stick out just a couple inches. Do I need extensions?
09-06-2018, 12:09 PM
#12
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That picture is showing the opening under the sun pad. I think it was cut with a router and it looks like the router got too deep. It is exactly the same on the port side of the boat. I believe this cut was made by the factory, but I'm not 100% certain.
09-06-2018, 12:20 PM
#13
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It definitely looks like someone has been cutting in the engine compartment.
09-07-2018, 07:16 AM
#16
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It still looks to me like the engine compartment liner has been cut out some and someone started cutting on the transom because it has been leaking and wet (see caulk) and then gave up.. I hope I'm wrong. Better pics will help tell the story.
As stated above, I'd remove the factory tips that are there now that hooked up to the silent thunder box and put on proper exhaust tips that extend out further from the transom. Corsa, CP Performance, etc. can set you up.
As stated above, I'd remove the factory tips that are there now that hooked up to the silent thunder box and put on proper exhaust tips that extend out further from the transom. Corsa, CP Performance, etc. can set you up.
09-07-2018, 11:21 PM
#17
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You could also be getting water rushing back toward the boat when you stop and going over the swim platform entering the bilge that way.
09-10-2018, 08:34 AM
#18
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as a boat is pretty flat in the rear its the old station wagon effect water mist being sucked in, only cure it to seal the area with some sort of rubber flap etc, some boar worse than others with this..I have been on bigger cruisers and you actually get wet sitting in rear area
09-10-2018, 12:06 PM
#19
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I really don't think it is the design of the boat. Formula sold a lot of these 252's and if it was a design problem we'd see a ton about it on the ol' internets. I owned a boat with a similar air intake setup for 3 1/2 years and not once did I get water in the bilge from water being drawn in from behind (see photo. a little hard to see with cover on but you can see no side vents, air intake under back of hatch visible where cover cutout is where it snaps down in back).
Have you Go Pro'd the boat while running to film the water being drawn in?
