Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 06-11-2015, 20:11   #1
Registered User

Join Date: May 2011
Posts: 38
Mounting Fuel Filter Above Engine?

Hi I need to move the primary fuel filter on my boat above the height of the engine to make room gor watermaker pump. My question is will the extra height cause pressure problems?

I would be increasing height by 250mm which would be about 100mm above the cyc head.

Any thoughts?
__________________

__________________
Burge is offline   Reply With Quote
Old 06-11-2015, 20:34   #2
Moderator
 
Hudson Force's Avatar

Cruisers Forum Supporter

Join Date: Nov 2008
Location: Lived aboard & cruised for 45 years,- now on a chair in my walk-in closet.
Boat: Morgan OI 413 1973 - Aythya
Posts: 7,894
Images: 1
Re: Mounting Fuel Filter Above Engine?

I don't see any problem with a primary fuel filter above the engine; however, what is the position of your fuel tanks? I have a "downhill" run from fuel tanks to Racor Filters to engine and I think this is quite common.
__________________

__________________
Take care and joy, Aythya crew
Hudson Force is offline   Reply With Quote
Old 06-11-2015, 20:53   #3
Certifiable Refitter/Senior Wannbe
 
Wotname's Avatar

Cruisers Forum Supporter

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: Van DeStat Super Dogger 31'
Posts: 7,334
Re: Mounting Fuel Filter Above Engine?

Quote:
Originally Posted by Burge View Post
Hi I need to move the primary fuel filter on my boat above the height of the engine to make room gor watermaker pump. My question is will the extra height cause pressure problems?

I would be increasing height by 250mm which would be about 100mm above the cyc head.

Any thoughts?
No issues at all IMO.

Regardless of whether you using a mechanical lift pump or electric and whether the fuel is gavity feed or lifted from a eel tank etc, there will not be an issue by having the filter about 10 inches above the head.

Bleeding may be marginally more difficult depending on the way you bleed but apart from that all should be good!
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is offline   Reply With Quote
Old 07-11-2015, 00:05   #4
Registered User
 
Muckle Flugga's Avatar

Join Date: Apr 2008
Location: Aboard the Ocean wave
Boat: 55' sloop.
Posts: 1,426
Re: Mounting Fuel Filter Above Engine?

Quote:
Originally Posted by Burge View Post
Hi I need to move the primary fuel filter on my boat above the height of the engine to make room gor watermaker pump. My question is will the extra height cause pressure problems?

I would be increasing height by 250mm which would be about 100mm above the cyc head.

Any thoughts?
No functional issues likely. However there is a fire risk consideration. I like to have my primary fuel filters well away from the engine such that they will not feed an engine fire should that occur. However if space requires, it does.
__________________
‘Structural engineering is the art of modeling materials we do not wholly understand into shapes we cannot precisely analyse as to withstand forces we cannot properly assess in such a way that the public at large has no reason to suspect the extent of our ignorance.’
Muckle Flugga is offline   Reply With Quote
Old 07-11-2015, 11:19   #5
Registered User

Join Date: Aug 2012
Posts: 811
Re: Mounting Fuel Filter Above Engine?

Quote:
Originally Posted by Burge View Post
Hi I need to move the primary fuel filter on my boat above the height of the engine to make room gor watermaker pump. My question is will the extra height cause pressure problems?

I would be increasing height by 250mm which would be about 100mm above the cyc head.

Any thoughts?
My initial thought is that it might be harder to bleed the air out after you change elements. That is unless you have an electric pump or a outboard style priming bulb between the tank and filter. ( I've used a priming bulb for several years and the diesel doesn't affect it; some people have had problems so there must be various bulbs)


Another thing I would be cautious about, raising the filter, is its possible proximity to the engine air intake. Fuel sucked into the intake from a leak in the filter could cause a run away engine situation. If that happened you may not be able to shut down the engine. Even if that is not likely, it could happen as filters can leak.
__________________
GrahamHO is offline   Reply With Quote
Old 07-11-2015, 20:24   #6
Registered User
 
01kiwijohn's Avatar

Join Date: Mar 2014
Location: Tacoma, Washington, USA
Boat: Casacde 36
Posts: 290
Images: 1
Re: Mounting Fuel Filter Above Engine?

No problem at all
__________________
01kiwijohn is offline   Reply With Quote
Old 10-11-2015, 13:19   #7
Registered User

Join Date: Feb 2013
Location: Howth, County Dublin, Ireland
Boat: Malo 36
Posts: 3
Re: Mounting Fuel Filter Above Engine?

I have a Malo 36 with the primary fuel filter mounted higher than the engine (but outside the engine compartment itself).

There is no issue with this - other than the fact that it makes bleeding a bit more difficult. The whole system needs to be bled through the secondary, engine-mounted, filter.

The manual lift pump on my engine isn't strong enough to lift the fuel right through the system so I fitted a priming bulb between the secondary filter and the engine. It makes bleeding a very simple job.
__________________
Tuadhmumhan is offline   Reply With Quote
Old 10-11-2015, 14:40   #8
Registered User

Join Date: May 2011
Posts: 38
Re: Mounting Fuel Filter Above Engine?

Hi All,


Thanks for your comments much appreciated and I am pleased to inform that you were all right, I moved the filter yesterday and ran the engine in neutral and under load without any problems.


Thanks again


Regards Anthony
__________________
Burge is offline   Reply With Quote
Old 10-11-2015, 18:12   #9
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 17,062
Re: Mounting Fuel Filter Above Engine?

My Filter is well above the engine, maybe a foot, and a couple of feet above the top of the tank. Factory mounted it there. I removed the electric pump and had no problem at all in bleeding the dual Racor set up I installed by using the lever on the mechanical lift pump.


Sent from my iPad using Cruisers Sailing Forum
__________________
a64pilot is offline   Reply With Quote
Old 10-11-2015, 20:06   #10
Registered User
 
Snore's Avatar

Join Date: Jan 2011
Location: www.USCGMaster.com
Boat: Tartan 33
Posts: 1,881
Re: Mounting Fuel Filter Above Engine?

Ditto on the it is not problem.

I would suggest that having an electric lift pump will make bleeding the system almost a no-brainer.


Sent from my iPhone- please forgive autocorrect errors.
__________________

__________________
"Whenever...it requires a strong moral principle to prevent me from deliberately stepping into the street, and methodically knocking people's hats off- then, I account it high time to get to sea..." Ismael ---- NEW website! www.USCGMaster.com
Snore is online now   Reply With Quote
Reply

Tags
engine, fuel, fuel filter

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Unable to Power up Engine above 2800rpm dougklay Engines and Propulsion Systems 7 21-09-2014 13:19
Fuel Starvation After Upgrading Fuel Filter Snore Engines and Propulsion Systems 5 15-07-2013 06:57
Yanmar 4JH3TE Fuel Filter Sensor - Engine Does Not Start VVD Engines and Propulsion Systems 0 20-08-2011 19:10
Clogged Fuel Line or Filter from Portable Tank to Engine meggyban Engines and Propulsion Systems 11 31-08-2010 01:16
Mounting SSB/HF tuners above deck? Beausoleil Marine Electronics 24 06-09-2008 17:40



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 03:54.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.