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Author Topic:   150 Sport: Adding Fuel Filter
mark9199 posted 01-03-2008 08:50 AM ET (US)   Profile for mark9199   Send Email to mark9199  
I want to install a 10 micron fuel filter and water separator on my 150 Sport. I have a 4-cycle 60-HP Mercury EFI Bigfoot (boat and engine are 2004 models). I am leaning towards the Racor 025-RAC-02. It seems to be a better fit for my size boat/engine and I like that it has a glass bowel. I was wondering if anyone has any suggestions/comments/thoughts on this, especially for the 150 Sport. If anyone happens to know what my fuel line size is, that would be helpful also, so that I can get the right size nipples without making a special trip to the boat.

Thanks and Happy New Year!

Mark

Fish Stick posted 01-03-2008 11:24 AM ET (US)     Profile for Fish Stick  Send Email to Fish Stick     
Hi Mark,

The small Racor is a good choice. I added the same filter to our 150 sport. The following is a link to a picture of the installation.

http://www.allcoast.com/gallery/view.cfm?mode=member&memberid=104452& p=7550

I had to use a plastic block to shim the filter off the transom and support the contoured casting. The flat mounting surface is on the wrong side and the flow would have been from port to starboard. This is reversed from the direction the fuel line runs now.

-Joe

Tohsgib posted 01-03-2008 02:30 PM ET (US)     Profile for Tohsgib  Send Email to Tohsgib     
Usually with above deck tanks you do not need a water separator due to the fact that 6 gal tanks do not produce condensation sitting on the deck. They do however allow rain water to get inside once older, etc. I would read your owner's manual, some EFI 4 strokes do not recomend aditional fuel filters, due to fuel flw restriction. The main reason for them is because the main tank is sitting down in the hull atop cool water with a hot sun beating on the deck above..hence the condesation. I never used one with my 70 Suzuki, just changed the $2 filter every oil change.
TRAFFICLAWYER posted 01-03-2008 08:11 PM ET (US)     Profile for TRAFFICLAWYER    
The correct Racor would be the 3240S for proper fuel flow and it mounts under the driver seat nicely, I have a 05 15' sport.
mark9199 posted 01-04-2008 09:07 AM ET (US)     Profile for mark9199  Send Email to mark9199     
Ok, looks like a differing of opinion which is good. I’m looking for all options before drilling.

I understand (and appreciate) your opinion, Tohsgib. But, when I bought my boat (new) there was water in the tank and it ended up causing a lot of aggravation before the problems were corrected. A long story that I won’t go into here. Another concern is that there is always the possibility of some water being in the gas that you buy. With that being said, I would rather play it safe and install a filter.

Joe, can you tell me how your filter keeps from rotating around the single mounting screw? Can you fill me in on the plastic shim material? Where did you find it?

I’m interested in your setup, also TrafficLawyer. I will look into that Racor model and check for mounting possibilities under the seat.

Is there any issue about mounting these filters before the primer bulb? I am also still looking for someone who can tell me what size fittings I’ll need (what size fuel line I have)?

Thanks all! I appreciate your help.

Mark

Fish Stick posted 01-04-2008 03:56 PM ET (US)     Profile for Fish Stick  Send Email to Fish Stick     
Mark,

The plastic block was just a small piece of UHMW polyethelene (I think) that was scrap at work. Maybe 2-3" long 1.5" H and about 1/2" thick.

Any starboard or cutting board type material would work fine. You could even use washers or some other material for spacing, but it just wouldn't look as clean.

I shaped the plastic by hand to fill the gap between the mounting hole and the bulk head. It is also notched to fit over the threaded portion of the casting, to help to keep the filter from rotating. I added some 5200 to glue the block to the transom as well, intending to further prevent any possible rotation.

In reality the mounting screw is probaly tight enough to prevent the filter from rotating under normal use. The fuel lines are not long enough for it to rotate into an upside down position.

I belive the 025 filter is rated for 25 gallons per hour. That is at least 5 times the amount I could ever hope to burn in one hour. Actual use averages less than 2 gph That was plenty of margin as far as I am concerned.

And yes the filter works. I have emptied water and debris from the bowl on several ocasions. It is nice to see it right there when ever you want to check. Certainly much easier than checking under the cowling.

-Joe

mark9199 posted 01-07-2008 07:57 AM ET (US)     Profile for mark9199  Send Email to mark9199     
Thanks for the reply, Joe. I am pretty sure that I'll go with the same Racor as you. I agree that the flow rating for it is easily high enough for my motor.

Thanks,
Mark

jenkinsph posted 01-08-2008 01:12 AM ET (US)     Profile for jenkinsph  Send Email to jenkinsph     
I have used a spin on fuel filter from Basspro for my 150 Sport for four years now with no problems. Replace the cartridge each spring at startup about $7.50 but do carry two spares in case I did have problems.

I think your fuel line is 5/16 but if in doubt cut an inch out of it where you intend to place the filter and take this sample with you to the store.

Steve

mark9199 posted 01-08-2008 01:28 PM ET (US)     Profile for mark9199  Send Email to mark9199     
I think the fuel line is 5/16, also, but not sure. I guess I'll verify on my next trip to the boat.

Thanks for the info, Steve.

Mark

A2J15Sport posted 01-15-2008 02:23 PM ET (US)     Profile for A2J15Sport  Send Email to A2J15Sport     
My fuel/water seperator is mounted the port side of the transom on my 1976 15' Sport.

It is a Quicksilver (Mercury) brand. It uses the spin off/on filter cartridges which are easy to find and change. I do so yearly.

Mine is used with portable tanks (OMC) fueling a 50 HP Johnson.

The unit I have has four inlet/outlet options for universal use.

I use 3/8" (ID) fuel hose that is marine rated.

Ridge Runner posted 01-18-2008 12:55 PM ET (US)     Profile for Ridge Runner  Send Email to Ridge Runner     
Mark,
If you mount the filter before the primer bulb, there is a chance that when you drain the filter the bulb will not be able to reprime the filter due to the large air bubble now the the fuel line (the bulb will stays in a collapsed state). I had that problem on my boat moving the bulb after the filter fixed the problem.
Joe
Bulldog posted 01-18-2008 05:17 PM ET (US)     Profile for Bulldog  Send Email to Bulldog     
Joe, "mount the filter before the primer bulb" was bad, so "moving the bulb after the filter fixed the problem", you have had a long week or I have, sounds the same. My primer bulbs are mounted after the filter and work fine, but I always thought it would be better after filter changes to have the primer on the tank side of the filter for the air reason............Jack
Ridge Runner posted 01-19-2008 10:56 AM ET (US)     Profile for Ridge Runner  Send Email to Ridge Runner     
Jack,
Ha..yes a long week..I had the bulb after the filter and it would airlock, moving it to the tank side fixed the problem.
Bulldog posted 01-19-2008 11:50 AM ET (US)     Profile for Bulldog  Send Email to Bulldog     
Joe, thanks! I'm planning on moving mine to between the filter and engine when I install the new filters. One for filling after filter change, and also the fuel lines come up from the floor and the primer bulbs would be set straight up and down for best performance!........Jack
Bulldog posted 01-19-2008 12:05 PM ET (US)     Profile for Bulldog  Send Email to Bulldog     
Ok Joe, now it is me!Today is my birthday, I'm 51 and apparently the mind is starting to go. I'm moving mine to where you have yours, between the filter and the tank....Jack

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