Water pick up mounting question

[POGE]

On the raw water pick up that feeds the live well and wash down it appears the screws in the pick up that come from underneath have cause some small cracks in the gel coat in the bilge area. Most likely the screw heads poking the gel coat. My question is should the brass intake be remounted with nuts, bolts, washers and made of brass? Additionally please provide any ideas on this question.

 

[Striperswiper]

I mounted my thru hull by screwing it on and 5200 the screws. No cracks or problems yet.

Are they just hair line cracks? If so they are probalby just cosmetic and nothing to worry about.

The thru hull ussually has a large nut and washer that secure it in place and the screws just keep it flush to the hull. I'd just back them out and put them back in with 5200. You'll never get them back out but I doubt you'll have to.

 

[Sleigher]

First off, your pickup is probably bronze.
You should make sure that your screws are bronze also.
If you have a regular high speed pick up it should have a sea-cock attached to it inside the hull.
The screws are really only to hold it in the right position until everything else is done.
If you look at my post about installing a thru-hull for engine cooling, you'll see the sea cock installed with a proper backing plate and a lot of fuss.
You will probably be fine without the backing plate but Groco shows the installation as requiring the backing plate. The backing plate would cover the holes that the screws (from below) will make.
I fretted over my installation for a few months before I installed it. However, it's not a good idea nor is it fun to have a water leak in the bottom of your boat.
If you don't have a sea cock on the pick up you definitely need one. I have a couple that I was going to put on ebay if you need one for a good price.
You can go to the Groco web site to see their installation instructions.
Well, that was probably more than you wanted but once I get started....

Peter

 

[POGE]

thanks for replies and advice. I agree most likely cosmetic, but I looked at a lot of post of bildges and didn't see my issues of small cracks. Also fret a little as I know a very small hole, can let the whole harbor in.

 

[dcunniff]

I had a scoop through hull put in this month, not for live well. Already had standard through hull for raw water washdown.

Bigger through hull, had it plumbed to infeed of I/O seawater pump to make it a set up like an inboard. Water doesn't get pulled from outdrive now. Has four small bolts through the hull. See pics.

Shows original smaller diameter raw water pump. Two others, not best photos, shows larger through hull for engine cooling, with stabilizing bolts through the hull. Can only see 2 of the 4. I'll take another picture maybe this weekend.

Dana

 

[POGE]

Able to post pictures of small cracks and stains. Dana thanks for pics and others for comments. I searched alott of pictures of bildges on CP and haven't seen many showing this issue.

 

[dcunniff]

Interesting. They look cosmetic. I will likely be at my boat tomorrow and I'll look closer at my original one.

Here is a closer pic of the orignial through hull, from a 2007 photo.

Dana

 

[dcunniff]

POGE, my through hull valve areas look OK. I checked the two of three, the raw water washdown shown already and again here, and I took a new pic of my forward through hull for the marine head. The other one I didn't attach a pic for is the marine head discharge.

Here's another pic of the engine through hull just done, with one bolt drip that I tightened yesterday.

Dana