302 Raw Water hose and seacock question

M

Mackaroni

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Dec 7, 2013
97
O'day 302 Baltimore MD
I am curious to see any photos of the raw water intake/system from your 302's. Part of my refit was to redo all the seacocks and hoses as what was on my boat was either original or just done poorly since (photos attached). The original seacocks were quite worn out and many of the backing plates were just wood and saturated. I ordered and am installing all new Groco seacocks and fittings with proper backing plates.

In my case the previous owner had plumbed a deck wash down pump on the same feed as the engine raw water intake using brass T-fittings, so I am going to move this to the intake for the head system. I also am planning to install a second raw water strainer for the head water intake (since I have one). This is a bit of a challenge since space is at a premium.

My new engine raw water intake seacock is now a Groco IBV 750 with a proper backing plate. But the raw water intake hose is 5/8" and I am wondering how to adapt this to 3/4" fittings for my seacock. I can't find a bronze elbow anywhere that goes from 3/4" NPT to 5/8 pipe hose". I can probably force the hose over the 3/4 fitting but this doesn't seem to be the best idea.

Any suggestions?
 

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Evan656

Evan656

.
Feb 5, 2015
38
O'Day 302 Ottawa
I don’t have photos handy of my drive shaft compartment but the set up on my 302 should be easy to imagine: a raw water intake and valve for the engine and a raw water intake for the head. Each valve is opposite the circular cut outs that you show in your picture. In my case, engine raw water goes through the left hole and head raw water the right and I think the hoses are 5/8 and 3/4. These hoses then run behind the fuel tank in the starboard cockpit locker to head and engine (and is a PITA if you want to change the hoses). That and the large engine exhaust hose shown your photos is all I really have in the drive shaft compartment. I am relocating an engine compartment blower hose (not sure why I have this on a diesel) and hot water tank recirculating hoses to go through this location.
I don’t think my boat has seen anything other than fresh water. So no strainers other than the one for the engine that is the hull side of the raw water intake through hull valve.
You show two more black hoses than I have (one being the wash down I imagine) and a white hose I don’t recognize. I do have the green sheathed grounding wire attached to the through hulls (throughout the boat) but do not recognize what looks like stainless steel strand wires in both your drive shaft and fuel tank compartments.
If, when I get a photo, I will post.
 
Richard19068

Richard19068

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Jun 11, 2004
1,760
Oday 31 Redondo Beach
Mackaroni said:
My new engine raw water intake seacock is now a Groco IBV 750 with a proper backing plate. But the raw water intake hose is 5/8" and I am wondering how to adapt this to 3/4" fittings for my seacock. I can't find a bronze elbow anywhere that goes from 3/4" NPT to 5/8 pipe hose".
Click to expand
maybe something like this?

Buck Algonquin Bronze Pipe To Hose Reducing Adapters
1676311572802.png


$16.76 On Sale

Buck Algonquin Bronze 3/4" Pipe x 5/8" Hose Adapter
SKU: 531459-3/4"-5/8"
UNIT: Each
NPT: 3/4"
Hose I.D.: 5/8"
Overall Length: 2-3/8"


 
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