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Old 01 November 2005, 15:19   #11
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is there any benefit in fitting two filters in series? just for added safety?
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Old 01 November 2005, 15:25   #12
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filters

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Originally Posted by Hugh Jardon
is there any benefit in fitting two filters in series? just for added safety?
Every engine should have its own filter mounted, but you should always fit a primary.

You can fit a duplex system so if one filter blocks, you can quickly change over to the other with a valve.

Remeber, the more unions you fit, the more problems tou may have to solve!
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Old 01 November 2005, 15:33   #13
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Now I have always tried to keep any tank as clean as possible. Anyway I've never found much, if any dirt in my fuelfilters.
Always replaced them every 100 hours or year.

By my idea the only problem that could occur is water in the tank especialy if you use cans to fill your tank.

The Optimax has the inside filter that also gives warning when there could too much water inside the filterunit.
For me, I think that a warning is always too late and prevent is the keyword for safe use of an outboard on long distances and especialy at sea.

An extra filter mounted outside the engine can give visual indication of any water in the fuel. Once you have water in the filter, It's easy to drain water out without havin' the enginhood taken of at sea and you hanging over the engine.

So a good solution for Optimax could be a simpel but big glas waterseperator outside the engine on an easy place to drain.
Am I wrong ?
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Old 01 November 2005, 15:37   #14
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Quote:
Originally Posted by pressman
Every engine should have its own filter mounted, but you should always fit a primary.

You can fit a duplex system so if one filter blocks, you can quickly change over to the other with a valve.

Remeber, the more unions you fit, the more problems tou may have to solve!
I have always made this system with two filterunits. Never used it but could be very usefull when you are at some point that the engine stops and there is no time to change it.
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Old 01 November 2005, 15:45   #15
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Quote:
Originally Posted by pressman
Every engine should have its own filter mounted, but you should always fit a primary.

You can fit a duplex system so if one filter blocks, you can quickly change over to the other with a valve.

Remeber, the more unions you fit, the more problems tou may have to solve!
i quite like the idea of two filters with a bypass switch, might be a bit of overkill but what price safety and keeping the engine fuel tip top clean

anyone come across the best place to buy the units, filters with visable sight glasses in the uk? like the idea of the using diesel ones being cheaper....cool
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Old 01 November 2005, 15:55   #16
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filters

Quote:
Originally Posted by Hugh Jardon
i quite like the idea of two filters with a bypass switch, might be a bit of overkill but what price safety and keeping the engine fuel tip top clean

anyone come across the best place to buy the units, filters with visable sight glasses in the uk? like the idea of the using diesel ones being cheaper....cool
The racors are not cheap to buy (£130 quidish each) but, they are exellent filter units.

You can get a few different micron elements dependant on how fine you require the fuel to be filtered, you need to get the right filter to suit your max fuel flow to the engine ( plus a little extra).

It is easy to set up a duplex system, can give you a diagram if you wish.
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Old 02 November 2005, 04:53   #17
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It doesn’t pay to over filter a fuel system

Diesels and some injected petrol engines need to be well filtered because of the fine tolerances in the injection system but over filtering can cause problems and introduces ‘something else to go wrong’
Follow the manufactures recommendation they tend to know best

Water in fuel is an issue and can be avoided by keeping the tank full and filtering all the fuel before it goes into the tank, Racor make funnels with built in filters.
Equally regular checking for water in float chambers or separators will catch a problem early. Des
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Old 02 November 2005, 05:08   #18
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I'm sorry guys but you are wrong.

If you look at the Optimax manuals it clearly says you should not fit additional filters in the fuel system.

The engine has its own filters and seperators so it does not need any more externally mounted.

Chris
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Old 02 November 2005, 05:12   #19
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Quote:
Originally Posted by CJL
I'm sorry guys but you are wrong.

If you look at the Optimax manuals it clearly says you should not fit additional filters in the fuel system.

The engine has its own filters and seperators so it does not need any more externally mounted.

Chris
Chris that is the point I’m trying to make don’t over filter. If the manufacturer recommends a particular set up that is the one to go for Des
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Old 02 November 2005, 05:17   #20
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Lancing Marine do a filter/water trap with a reusable stainles element and a water drain. Clear or solid bowl. All I can tell you is mine works well. They come with a stainless mounting bracket but you have to select your union size to suit your fuel lines.

Lancing have redone their web site and it's now downloadable pdf manuals. It's all in there.


http://www.lancingmarine.com/pricedownloads.html
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