New O'Day owner.

Aug 17, 2010
346
Oday 35 Barrington
I was not gainfully employed when I first bought my O'day 35. I therefore spent the first winter rebuilding most of the systems aboard. This became my Monday to Friday job.

What did the system rebuild include? Here is a partial list;
  • New SmartPlug shore power inlet
  • Rebedded some stanchions
  • Replaced the heat exchanger anode
  • Replaced the coolant in the closed cooling system loop
  • Moved and mounted the domestic hot water heater to a better location in the lazerette
  • Troubleshooting and repair of the VacuFlush holding tank
  • Repacked the propeller shaft gland
  • I had the hatches rebuilt by Select Plastics, and I purchased screens and shades for them
  • I replaced the inoperative electric bilge pump and the switch. I used a Rule Gold 2000 and an Ultimate Bilge Pump Switch, and these are still working today. (15 years!)
  • I rebuilt the drop boards for the companionway out of 3/8" acrylic (should have used 1/2")
  • I replaced the plastic tank vent fittings with new stainless steel tank vents
  • I rebuilt the primary electrical system, and hinged the electrical panel so that I can access the back without removing screws
  • I replaced the 51 Amp alternator with a 90 Amp alternator
  • I upgraded the alternator mounting bracket on the M25
  • I built and installed new stainless steel hand rails to replace the worn old teak handrails.
  • I rebuilt the Oberdorfer raw water pump
  • I installed a 30A Galvanic Isolator
  • I replaced the rubber throttle and shift levers with stainless steel ones
  • I installed an electric fuel gauge (but didn't notice that the negative lead was tied to the bonding system of the boat thereby leading to my zincs dissolving after every 6 weeks :rolleyes:)
  • I installed a Xantrex Echo Charge (today I would use an ACR)
  • I rebuilt the Beckson Ports and their latches
  • I added two cleats to the Genoa track - giving me needed mid-ship cleats
  • I replaced the coolant pump on the M25
  • I installed a new VHF radio
  • I installed LED steaming and foredeck lights
  • I installed a new engine thermostat
  • I painted the bottom
Some other stuff too...

Much of what I did I have since re-done in a better way. For example, I added a PSS Dripless Shaft Seal in 2013. I have also changed the coolant type to Fleetguard ES Compleat (sic) because it was reported by Practical Sailor to be "better" than the no name coolant mix that was in there.
 
Jun 11, 2004
1,828
Oday 31 Redondo Beach
  • I replaced the plastic tank vent fittings with new stainless steel tank vent
  • I upgraded the alternator mounting bracket on the M25
That's a good, and long, list.

Does your boat have plastic through hulls for the above the waterline holding tank, bilge pump and cockpit discharges?

Mine does and they have been on my list to swap out for bronze but I have not done that yet. I was wondering if others have done that or just lived with the plastic.

@peterandginny , if you have a Universal M-25 or M-18 the alternator bracket is important to check:
 
Aug 17, 2010
346
Oday 35 Barrington
That's a good, and long, list.

Does your boat have plastic through hulls for the above the waterline holding tank, bilge pump and cockpit discharges?

Mine does and they have been on my list to swap out for bronze but I have not done that yet. I was wondering if others have done that or just lived with the plastic.

@peterandginny , if you have a Universal M-25 or M-18 the alternator bracket is important to check:
Yes, my boat has/had plastic above the waterline discharges for the following:
  • One 1-1/8" through hull for the electric bilge pump (labeled "Rule") - I replaced this with plastic through hull in 2011 - [edit] The UV damage to this through hull caused it to brake off when I touched it with my finger while I was polishing the hull for the first time. I fear to think of what would have happened if the boat were in the water at the time.
  • Two 5/8" for propane lockers - replaced these with plastic in 2023
  • One 3/4" discharge for the shower sump in the head - replaced with stainless steel in 2022
  • Two 1-1/2" cockpit drains - replaced with plastic in 2023
  • Two 1-1/2" cockpit drain discharge - replaced with stainless steel in 2023
  • One 5/8 discharge for the sink in the head - replaced with plastic in 2023
Sink & Shower discharge;
20230518_140432.jpg


Propane locker;
20230518_140411.jpg


Cockpit drain and manual bilge pump discharge;
20230518_140420.jpg
 
Last edited:
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Aug 17, 2010
346
Oday 35 Barrington
The holding tank discharge is below the waterline, and is a bronze through hull, connected to a bronze seacock.
 
Jun 11, 2004
1,828
Oday 31 Redondo Beach
Yes, my boat has/had plastic above the waterline discharges for the following:
  • One 1-1/8" through hull for the electric bilge pump (labeled "Rule") - I replaced this with plastic through hull in 2011 - [edit] The UV damage to this through hull caused it to brake off when I touched it with my finger while I was polishing the hull for the first time. I fear to think of what would have happened if the boat were in the water at the time.
  • Two 5/8" for propane lockers - replaced these with plastic in 2023
  • One 3/4" discharge for the shower sump in the head - replaced with stainless steel in 2022
  • Two 1-1/2" cockpit drains - replaced with plastic in 2023
  • Two 1-1/2" cockpit drain discharge - replaced with stainless steel in 2023
  • One 5/8 discharge for the sink in the head - replaced with plastic in 2023
Sink & Shower discharge;
View attachment 234992

Propane locker;
View attachment 234993Cockpit drain and manual bilge pump discharge;
Good info. Thanks.