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Go Back   SailNet Community > Boat Builders Row > Pacific Seacraft
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  #1  
Old 01-12-2009
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New Diesel Tank Recommendations

I had some pin holes in tank last year and am considering replacement.

Looking for suggestion on fiberglass or aluminum.

Looking for vendor recommendations.

I contacted PSC and they do have one for 31 but cost is $2000. Is there less expensive alternatives?

Steve PSC-31 #84
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Old 01-12-2009
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Tell me about the pinholes since I have Hull 83. I have never seen any evidence of a problem but I keep my bilge dry.
When I toured the new factory I did see that they are using fiberglass tanks, which they claim solves all problems. The thing that concerns me is if we start getting ethanol in diesel are fiberglass tanks going to have the same problem that they do in gasoline applications?
Larry
ASYLUM
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Old 01-12-2009
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Look through the old archived list for notes aboutleaking fuel tanks. There were a few in 2006 and 2007 that might be of interest to you.

http://www.sailnet.com/list_server/c...acificseacraft

Bill Murdoch
1988 PSC34
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Old 01-13-2009
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My hull #84 was always on Lake Michigan so no salt water but I suspect the bilge was never dry. I could see water line stain about six inches off bottom. Every time it rains water comes through the hawse pipe to the bilge.

Last summer as I walk to the boat I see some diesel on the water surface. I thought it was from one of those old trawlers but when I checked the bilge I realized where it came from. Not a lot of diesel - maybe a couple ounces - but that goes a long way on water.

I removed the tank and we pressure tested at 2# and it would not hold pressure over night. I cleaned up the tank and coated with this sticky epoxy material and it worked for a couple months but before winter haul out I had some diesel again.

What happens is the tank rubs off the epoxy where it meets the keel bolts. Then constant contact with water apparently corrodes the aluminum. I think this is corroborated by others.
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Old 01-13-2009
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makes sense, glad I put in a PSS shaft seal and keep my bilge dry. I wonder if the shoal vs normal keel makes a difference?
Larry
ASYLUM
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Old 01-13-2009
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Bart at Cruising Yachts may have a source for new PSC aluminum tanks. Also, its possible the pinholes may be limited to the seem welds. If so, you may be able to have your seems redone.
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Old 01-13-2009
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Steve,

Our tank was replaced prior to our purchasing the boat. Likely for the same reasons you describe.

The good news is the PSC tanks are very easily removed. If you can find a reliable source for a replacement tank, it shouldn't be an especially difficult job. The original vendor (name escapes me) in CA should be able to weld one up for you. Other owners, like Dave Pomerantz, have found good vendors up in New England.

One point specific to the PSC 31: Originally, the tank for the standard draft 31 was 27 gallons. This was later changed to I think 23 gallons, by chopping a few inches off the bottom of the tank. This should help keep the bottom of the tank from contacting bilge water quite so often. Our new tank is the 23 gallon version and it sits several inches above the bottom of the bilge. This info is n/a if you have a scheel keel.
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NEVER CALLS CRUISINGDAD BACK....CAN"T TAKE THE ACCENT

Last edited by JohnRPollard; 01-23-2009 at 10:46 AM. Reason: typos
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Old 01-20-2009
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I had a tank builder (at their suggestion) simply replace the bottom plate, where the corrosion was located, pressure test the tank, and then re-epoxy. Most of the cost in a new tank is supplying and welding the fittings (vents/fills/etc.). Obviously, depends where the problem is.

Roger
Starkindler II
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Old 01-24-2009
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Fuel tank recommendations

I'm looking to have a new tank fabricated for my PSC 34, and have formulated some ideas about the design but still have several questions unanswered. I plan to incorporate the following:
1. New sending Unit (How do I calibrate it?)
2. Engine draw tube (How far off the bottom should it be?)
3. Heater draw tube (I'm guessing 5 inches shorter than the engine draw tube to act as a warning on fuel level)
4. Diesel return tube ( 2-3 inches)
5. Vent
6. Fuel Fill (2/3 depth of tank to minimize foaming)
7. Aluminum tank with epoxy coat ( What type/brand of epoxy - coal tar?)
8. Inspection Hole ( 8 x 8 inches)

What type material is used for a seal on the fuel gauge and inspection hole?
Pacific Seacraft quoted me $2,400 plus crating and shipping but I have found a locate metal fabricator that is eager for the job and promises a good price.

Carl
s/v Credence II
PSC 34 #159
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Old 01-24-2009
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Quote:
Originally Posted by stevemac00 View Post
I had some pin holes in tank last year and am considering replacement.

Looking for suggestion on fiberglass or aluminum.

Looking for vendor recommendations.

I contacted PSC and they do have one for 31 but cost is $2000. Is there less expensive alternatives?

Steve PSC-31 #84
Fiberglass,polly is the way to go solved my problems more than 10 years ago
tank is stil as good as new(make sure you support this tank good
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