Changing fuel tank configuration... - SailNet Community

   Search Sailnet:

 forums  store  

Quick Menu
Boat Reviews  
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Hatches and Portlights
Interior And Galley
Marine Electronics
Other Items
Plumbing and Pumps
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here

Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
Old 10-14-2011
Join Date: Sep 2010
Posts: 68
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 5
micheck is on a distinguished road
Changing fuel tank configuration...

I am contemplating changing my diesel fuel tank configuration from one small tank near the engine to two larger tanks located about 20 feet away from the engine.

1: Is remote tankage OK?
2: Should I run 2 lines from the tank farm to the engine with the selection valves located near the tanks? (less money) OR
3: Should I run 4 lines from the tanks to near the engine and do the switching there? (more convenient to monitor the action)
4: Where should the filtering equipment be located?

Reply With Quote Quick reply to this message Share with Facebook
Old 10-14-2011
Senior Member
Join Date: Feb 2010
Location: Narragansett Bay
Posts: 10,582
Thanks: 45
Thanked 204 Times in 189 Posts
Rep Power: 7
Minnewaska will become famous soon enough Minnewaska will become famous soon enough
Let me first say that I like the notion of redundant fuel tanks, so I would keep everything redundant, including the lines. I don't think the distance itself matters as much as the hydrodynamics of pumping fluid up hill or creating downhill pressure. I would put cutoffs at each end, for different reasons.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Jeanneau 54DS

In the harsh marine environment, something is always in need of repair. Margaritas fix everything.
Reply With Quote Quick reply to this message Share with Facebook
Old 10-14-2011
blt2ski's Avatar
Senior Member
Join Date: May 2005
Posts: 6,838
Thanks: 0
Thanked 25 Times in 24 Posts
Rep Power: 11
blt2ski will become famous soon enough
Some will also depend upon the fuel pump you have or may need to get. While my diesel has a pump, it is generally speaking, gravity fed! ie the bottom of the tank is higher than the top of the motor. If you are set up this way currently, you may/will need to engineer a fuel pump to get the fuel from 20' away up hill to the motor!

I've toyed with going from a 7 to a 12-15 if I can get a tank to fit in the general area of where it is now. In my case, I believe doable, question is, how big and the cost vs benefit!

She drives me boat,
I drives me dinghy!
Reply With Quote Quick reply to this message Share with Facebook
Old 10-15-2011
boatpoker's Avatar
Dirt Free
Join Date: Jul 2008
Location: Toronto
Posts: 1,148
Thanks: 9
Thanked 29 Times in 28 Posts
Rep Power: 7
boatpoker is on a distinguished road
1. Adding an electric fuel pump may help and it also makes bleeding the system much faster and easier.

2. Don't forget the return lines. The fuel must be returned to the same tank it was drawn from.
Dirt People Scare me
Reply With Quote Quick reply to this message Share with Facebook
Old 10-16-2011
PorFin's Avatar
Señor Member
Join Date: Sep 2007
Posts: 1,440
Thanks: 8
Thanked 18 Times in 18 Posts
Rep Power: 8
PorFin is on a distinguished road
The manifold location is not critical -- it'll be a trade off with redundancy on one end and clutter/cost on the other, with convenience of access somewhere in the middle.

Adding a supplemental electric pump is a good idea, as BoatPoker mentioned.

In addition to the supply and return lines, don't forget that you also need to think about how your new vent lines will be run.
Reply With Quote Quick reply to this message Share with Facebook

Quick Reply

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Need a new fuel tank AlLorman Pacific Seacraft 26 09-16-2011 12:08 PM
fuel tank mike dixon Gear & Maintenance 1 11-05-2009 08:35 AM
Changing Fuel Filter- How not to do it ncapener Gear & Maintenance 7 10-11-2009 07:54 AM
Yanmar 2QM15 - Changing the Fuel Filter backcreeksailor Gear & Maintenance 15 06-04-2009 07:36 PM
11.0 Fuel tank S2 Dave S2 1 08-14-2006 10:30 PM

All times are GMT -4. The time now is 04:41 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) LLC 2000-2012

The store is owned and operated by a company independent of the forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.