Category Archives: Uncategorized

Diesel Dowty seals

Our boat has always been fairly diesel-y smelling (previous post), I wrote the smell off, to being just the nature of the beast, what with a motor next to your bed and all. This past summer I noticed a new sheen in our bilge, upon investigation, I see that many of the compression washers are oozing on the banjo bolts as well as on the filter bleed screws (below right). I also noticed a few of the hose crimps are a bit drippy near the filters. I have always wondered why the fuel filters are under our bed with less than an inch of access under them, making draining and filter changing very difficult. So this spring I plan to move the filters up to the engine compartment, replace all hose and replace all the compression washers with Dowty washers.

Dowty washers/seals are used in place of traditional (annealed) copper washers. They are a steel washer with a rubber inner. I’ve ordered an assorted box and plan to use them on my bikes as well.

I can’t claim this as my own idea but came about from looking for solutions in the Sailboat Owners forums.

Yanmar has stopped using the copper washers on their newer model diesels and now use a rubber bonded-to-metal replacement. They are called Dowty washers. They are a direct replacement for the copper washers. The stock numbers are 22190-080002 for the 8mm, and 22190-120002 for the 12mm. ....  No more leaks.


Aft cabin bulkhead door

The aft cabin on the Hunter 340 has a teak bulkhead hiding the fuel and waste tanks and the rudder shaft. There is a fair amount of space back there but it’s very inaccessible because of the awkward bulkhead that is screwed into place. I have seen some owners put a door in the middle for access to batteries or fuel filters, but I thought I could make use of the space behind the fuel tank.

I cut a door into the port side piece of the bulkhead and placed zero tolerance kitchen hinges on the back side.  I use this space for covers, soft coolers and toolboxes.



Dinghy cleaner


I was curious if I could use my recent purchase of Vim bathroom cleaner ($1.99!) on my new/old/new again Hypalon dinghy and the self-destructing PVC dinghy. I looked up what were the active chemical ingredients on the MSDS.

The main ingredient in the cleaner is something hideous sounding, Ethoxylated C9-11-alcohols. These are very effective surfactants – interestingly it shows up in a dinghy specific cleaning product from Polymarine, one of the leading dinghy paint/cleaner brands.

As it turns out, Polymarine Duo-clean (duo=PVC & Hypalon) is comprised of :

  • Ethoxylated C9-11-alcohols
  • Sodium hydroxide – aka lye or caustic soda
  • Tetrasodium Pyrophosphate – a salt used as a buffering agent (A buffering agent can be either a weak acid or weak base,  which only slightly changes its pH in response to other acids and bases being combined with it)

Dinghy materials are very resistant to alkalines, but not petrochemicals/solvents. So I used it….!  There are still some tannin stains on the floor in the fiberglass, but the dinghy looks much better. This is the dinghy we used on our Thousand Islands trip and is now permanently ours.  Thanks Malcolm!


Ikea lights

Before we left or the 1000 islands I grabbed some Ikea strip lighting. It is cheap and easy to install. I played around with a few locations and decided one a strip above the sink. Given that this is the most used location in the boat it makes sense, also it us useful as a reading light when sitting at the table.

I tied into the supply for the round light fixture. a few snips, crimps and a quick solder on the ikea fixture and we were finished. I included a shot of breakfast as a way of explanation, the kids were off playing in Gananoque while I did this.

I experimented with lots of locations for these strips. They work tucked under the cabinetry as incidental lighting. Especially low down. I could go crazy creating nice mood lighting on the boat. The next one to be installed will be in the bathroom under the cabinet above the sink. It creates nice lighting and brightens a dead area.

Up the Rideau

In front of the Newboro locks.

This summer we took Tortuga up the Rideau canal to Ottawa, it was a great trip. I hope write some tips from the trip for others – in the mean time here are some photos from the Toronto -Coburg-Kingston leg.
Continue reading Up the Rideau