Subject: Fuel transfer/polishing pump
From: (LaBomba182)
Date: 11/26/03 10:29 AM Eastern

Subject: Fuel transfer/polishing pump
From: Glenn Ashmore

Glenn, are you getting any of our calls and Emails?


Got it. Call when you are "free". :-)

Capt. Bill

I guess it depend upon how the plumbing is designed whether or not
a reversing pump is necessary. My design is totally separate from the
supply/return system used by the engine and genset.

How do you protect against overfilling a tank?

Doug

"Glenn Ashmore" wrote in message
news:rE3xb.53022$xV6.495@lakeread04...
I did the reversing pump so I can select which main to draw from when
filling the day tank from the nav station. Once I get an accurate
measure of the flow rate I can calibrate a timer to transfer an exact
amount of fuel to the day tank. That should simplify fuel management.
Just set the timer, make a log entry and forget it.

I see my set up not so much as a fuel polishing system as a pre-filter.
As a practical matter, full polishing is rather rarely required.
When I do get a gunked up load I will just have set it to recirculate
and sacrifice a filter. I understand that Parker/Racor makes a
washable diesel filter but I can't find any data on it.

Doug Dotson wrote:

Sounds like a good system. I've designed mine so that a reversing
pump is not necessary, and I can switch the filter in or out. The
idea is that bypassing the filter I can transfer fuel faster if the
fuel is already clean. One poster mentioned that Raycor type filters
don;t make good polishing filters because they are surface filters and
clog up quickly. The paper towel and toilet paper types are better
for polishing. I was always thinking of using Raycors but now I have to
do some more research.

Doug

"Glenn Ashmore" wrote in message
news:nZ%wb.52966$xV6.15766@lakeread04...

Doug,

I have been through this myself. Actually you do have more of a filter
problem than a pump problem. The 500 is just to small for a practical
polishing system. You need a 1000 at a minimum.

The smallest transfer pumps (Reverso) are rated at 180 GPH at zero head
which is the max rating for the 1000. Racor says that when you get
close to the max rating the turbine can scour water out of the bowl but
you have head loss in the piping and the filter itself so the actual
flow will be somewhat below the max rating. It would take four 1000's
to keep up with a Jabsco VR050 and two to handle a Groco SP06.

While the Reverso filters can handle up to 15 PSI, Reverso incourages
upstream installation to avoid the possibilities of pressureized leakage
and slightly better filtering performance.

My system consist of 40 gal port and stbd mains and a 30 gal "day" tank.
The mains have Racor 1000s on their pickup lines and there is no
external fill for the day tank. Any fuel reaching it has to go through
a filter first. I am using the Reverso GP301 3 GPM reversable with four
check valves and two 3-way selector valves.

By changing the direction of the pump rotation I can pull from either
main tank and with one 3-way selector can route the output to any of the
three tanks. The second 3-way allows me to bypass the day tank and pull
from either of the mains should the Reverso crap out. With this
arangement I can fill the day tank with freshly filtered fuel, polish a
single tank or move fuel to the windward tank for trim. Whenever fuel
moves it gets filtered.



Doug Dotson wrote:

I am designing a fuel polishing and transfer system. My thought
is to use valves to route fuel from any tank to any tank. No
problem with that part. I want to be able to just transfer fuel
or switch in a filter to polish the fuel while transferring. Since
I can select the same tank for source and destination, I can
polish fuel in place as well. The problem comes with the selection
of a pump. I was looking at a Groco or Jabsco pump which seems
good for transfer purposes, but way exceeds the flowrate of the
filter when polishing. A Walbro fuel pump (which I have as a priming
pump now) seems like a good fit for polishing (33 GPH) but will be slow
when just transferring fuel. What happens when a 5.5 GPM pump
(Jabsco) is pushing fuel through a filter rated at 60 GPH (RACOR 500)?

Thanks!
Doug
s/v Callista




--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com





--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

I guess it depend upon how the plumbing is designed whether or not
a reversing pump is necessary. My design is totally separate from the
supply/return system used by the engine and genset.

How do you protect against overfilling a tank?

Doug

"Glenn Ashmore" wrote in message
news:rE3xb.53022$xV6.495@lakeread04...
I did the reversing pump so I can select which main to draw from when
filling the day tank from the nav station. Once I get an accurate
measure of the flow rate I can calibrate a timer to transfer an exact
amount of fuel to the day tank. That should simplify fuel management.
Just set the timer, make a log entry and forget it.

I see my set up not so much as a fuel polishing system as a pre-filter.
As a practical matter, full polishing is rather rarely required.
When I do get a gunked up load I will just have set it to recirculate
and sacrifice a filter. I understand that Parker/Racor makes a
washable diesel filter but I can't find any data on it.

Doug Dotson wrote:

Sounds like a good system. I've designed mine so that a reversing
pump is not necessary, and I can switch the filter in or out. The
idea is that bypassing the filter I can transfer fuel faster if the
fuel is already clean. One poster mentioned that Raycor type filters
don;t make good polishing filters because they are surface filters and
clog up quickly. The paper towel and toilet paper types are better
for polishing. I was always thinking of using Raycors but now I have to
do some more research.

Doug

"Glenn Ashmore" wrote in message
news:nZ%wb.52966$xV6.15766@lakeread04...

Doug,

I have been through this myself. Actually you do have more of a filter
problem than a pump problem. The 500 is just to small for a practical
polishing system. You need a 1000 at a minimum.

The smallest transfer pumps (Reverso) are rated at 180 GPH at zero head
which is the max rating for the 1000. Racor says that when you get
close to the max rating the turbine can scour water out of the bowl but
you have head loss in the piping and the filter itself so the actual
flow will be somewhat below the max rating. It would take four 1000's
to keep up with a Jabsco VR050 and two to handle a Groco SP06.

While the Reverso filters can handle up to 15 PSI, Reverso incourages
upstream installation to avoid the possibilities of pressureized leakage
and slightly better filtering performance.

My system consist of 40 gal port and stbd mains and a 30 gal "day" tank.
The mains have Racor 1000s on their pickup lines and there is no
external fill for the day tank. Any fuel reaching it has to go through
a filter first. I am using the Reverso GP301 3 GPM reversable with four
check valves and two 3-way selector valves.

By changing the direction of the pump rotation I can pull from either
main tank and with one 3-way selector can route the output to any of the
three tanks. The second 3-way allows me to bypass the day tank and pull
from either of the mains should the Reverso crap out. With this
arangement I can fill the day tank with freshly filtered fuel, polish a
single tank or move fuel to the windward tank for trim. Whenever fuel
moves it gets filtered.



Doug Dotson wrote:

I am designing a fuel polishing and transfer system. My thought
is to use valves to route fuel from any tank to any tank. No
problem with that part. I want to be able to just transfer fuel
or switch in a filter to polish the fuel while transferring. Since
I can select the same tank for source and destination, I can
polish fuel in place as well. The problem comes with the selection
of a pump. I was looking at a Groco or Jabsco pump which seems
good for transfer purposes, but way exceeds the flowrate of the
filter when polishing. A Walbro fuel pump (which I have as a priming
pump now) seems like a good fit for polishing (33 GPH) but will be slow
when just transferring fuel. What happens when a 5.5 GPM pump
(Jabsco) is pushing fuel through a filter rated at 60 GPH (RACOR 500)?

Thanks!
Doug
s/v Callista




--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com





--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

The vent on the day tank goes to the return port of the main tanks to
handle the overflow. Return from the engine goes to the day tank so if
the transfer pump craps out running the engine off of one of the mains
will gradually refill the day tank.

Doug Dotson wrote:

I guess it depend upon how the plumbing is designed whether or not
a reversing pump is necessary. My design is totally separate from the
supply/return system used by the engine and genset.

How do you protect against overfilling a tank?

Doug

"Glenn Ashmore" wrote in message
news:rE3xb.53022$xV6.495@lakeread04...

I did the reversing pump so I can select which main to draw from when
filling the day tank from the nav station. Once I get an accurate
measure of the flow rate I can calibrate a timer to transfer an exact
amount of fuel to the day tank. That should simplify fuel management.
Just set the timer, make a log entry and forget it.

I see my set up not so much as a fuel polishing system as a pre-filter.
As a practical matter, full polishing is rather rarely required.
When I do get a gunked up load I will just have set it to recirculate
and sacrifice a filter. I understand that Parker/Racor makes a
washable diesel filter but I can't find any data on it.

Doug Dotson wrote:


Sounds like a good system. I've designed mine so that a reversing
pump is not necessary, and I can switch the filter in or out. The
idea is that bypassing the filter I can transfer fuel faster if the
fuel is already clean. One poster mentioned that Raycor type filters
don;t make good polishing filters because they are surface filters and
clog up quickly. The paper towel and toilet paper types are better
for polishing. I was always thinking of using Raycors but now I have to
do some more research.

Doug

"Glenn Ashmore" wrote in message
news:nZ%wb.52966$xV6.15766@lakeread04...


Doug,

I have been through this myself. Actually you do have more of a filter
problem than a pump problem. The 500 is just to small for a practical
polishing system. You need a 1000 at a minimum.

The smallest transfer pumps (Reverso) are rated at 180 GPH at zero head
which is the max rating for the 1000. Racor says that when you get
close to the max rating the turbine can scour water out of the bowl but
you have head loss in the piping and the filter itself so the actual
flow will be somewhat below the max rating. It would take four 1000's
to keep up with a Jabsco VR050 and two to handle a Groco SP06.

While the Reverso filters can handle up to 15 PSI, Reverso incourages
upstream installation to avoid the possibilities of pressureized leakage
and slightly better filtering performance.

My system consist of 40 gal port and stbd mains and a 30 gal "day" tank.
The mains have Racor 1000s on their pickup lines and there is no
external fill for the day tank. Any fuel reaching it has to go through
a filter first. I am using the Reverso GP301 3 GPM reversable with four
check valves and two 3-way selector valves.

By changing the direction of the pump rotation I can pull from either
main tank and with one 3-way selector can route the output to any of the
three tanks. The second 3-way allows me to bypass the day tank and pull

from either of the mains should the Reverso crap out. With this

arangement I can fill the day tank with freshly filtered fuel, polish a
single tank or move fuel to the windward tank for trim. Whenever fuel
moves it gets filtered.



Doug Dotson wrote:


I am designing a fuel polishing and transfer system. My thought
is to use valves to route fuel from any tank to any tank. No
problem with that part. I want to be able to just transfer fuel
or switch in a filter to polish the fuel while transferring. Since
I can select the same tank for source and destination, I can
polish fuel in place as well. The problem comes with the selection
of a pump. I was looking at a Groco or Jabsco pump which seems
good for transfer purposes, but way exceeds the flowrate of the
filter when polishing. A Walbro fuel pump (which I have as a priming
pump now) seems like a good fit for polishing (33 GPH) but will be slow
when just transferring fuel. What happens when a 5.5 GPM pump
(Jabsco) is pushing fuel through a filter rated at 60 GPH (RACOR 500)?

Thanks!
Doug
s/v Callista




--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com




--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com





--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

The vent on the day tank goes to the return port of the main tanks to
handle the overflow. Return from the engine goes to the day tank so if
the transfer pump craps out running the engine off of one of the mains
will gradually refill the day tank.

Doug Dotson wrote:

I guess it depend upon how the plumbing is designed whether or not
a reversing pump is necessary. My design is totally separate from the
supply/return system used by the engine and genset.

How do you protect against overfilling a tank?

Doug

"Glenn Ashmore" wrote in message
news:rE3xb.53022$xV6.495@lakeread04...

I did the reversing pump so I can select which main to draw from when
filling the day tank from the nav station. Once I get an accurate
measure of the flow rate I can calibrate a timer to transfer an exact
amount of fuel to the day tank. That should simplify fuel management.
Just set the timer, make a log entry and forget it.

I see my set up not so much as a fuel polishing system as a pre-filter.
As a practical matter, full polishing is rather rarely required.
When I do get a gunked up load I will just have set it to recirculate
and sacrifice a filter. I understand that Parker/Racor makes a
washable diesel filter but I can't find any data on it.

Doug Dotson wrote:


Sounds like a good system. I've designed mine so that a reversing
pump is not necessary, and I can switch the filter in or out. The
idea is that bypassing the filter I can transfer fuel faster if the
fuel is already clean. One poster mentioned that Raycor type filters
don;t make good polishing filters because they are surface filters and
clog up quickly. The paper towel and toilet paper types are better
for polishing. I was always thinking of using Raycors but now I have to
do some more research.

Doug

"Glenn Ashmore" wrote in message
news:nZ%wb.52966$xV6.15766@lakeread04...


Doug,

I have been through this myself. Actually you do have more of a filter
problem than a pump problem. The 500 is just to small for a practical
polishing system. You need a 1000 at a minimum.

The smallest transfer pumps (Reverso) are rated at 180 GPH at zero head
which is the max rating for the 1000. Racor says that when you get
close to the max rating the turbine can scour water out of the bowl but
you have head loss in the piping and the filter itself so the actual
flow will be somewhat below the max rating. It would take four 1000's
to keep up with a Jabsco VR050 and two to handle a Groco SP06.

While the Reverso filters can handle up to 15 PSI, Reverso incourages
upstream installation to avoid the possibilities of pressureized leakage
and slightly better filtering performance.

My system consist of 40 gal port and stbd mains and a 30 gal "day" tank.
The mains have Racor 1000s on their pickup lines and there is no
external fill for the day tank. Any fuel reaching it has to go through
a filter first. I am using the Reverso GP301 3 GPM reversable with four
check valves and two 3-way selector valves.

By changing the direction of the pump rotation I can pull from either
main tank and with one 3-way selector can route the output to any of the
three tanks. The second 3-way allows me to bypass the day tank and pull

from either of the mains should the Reverso crap out. With this

arangement I can fill the day tank with freshly filtered fuel, polish a
single tank or move fuel to the windward tank for trim. Whenever fuel
moves it gets filtered.



Doug Dotson wrote:


I am designing a fuel polishing and transfer system. My thought
is to use valves to route fuel from any tank to any tank. No
problem with that part. I want to be able to just transfer fuel
or switch in a filter to polish the fuel while transferring. Since
I can select the same tank for source and destination, I can
polish fuel in place as well. The problem comes with the selection
of a pump. I was looking at a Groco or Jabsco pump which seems
good for transfer purposes, but way exceeds the flowrate of the
filter when polishing. A Walbro fuel pump (which I have as a priming
pump now) seems like a good fit for polishing (33 GPH) but will be slow
when just transferring fuel. What happens when a 5.5 GPM pump
(Jabsco) is pushing fuel through a filter rated at 60 GPH (RACOR 500)?

Thanks!
Doug
s/v Callista




--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com




--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com





--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

Can you transfer fuel between the mains? If so, how do you prevent
overflow there?

Doug

"Glenn Ashmore" wrote in message
news:278xb.53074$xV6.39166@lakeread04...
The vent on the day tank goes to the return port of the main tanks to
handle the overflow. Return from the engine goes to the day tank so if
the transfer pump craps out running the engine off of one of the mains
will gradually refill the day tank.

Doug Dotson wrote:

I guess it depend upon how the plumbing is designed whether or not
a reversing pump is necessary. My design is totally separate from the
supply/return system used by the engine and genset.

How do you protect against overfilling a tank?

Doug

"Glenn Ashmore" wrote in message
news:rE3xb.53022$xV6.495@lakeread04...

I did the reversing pump so I can select which main to draw from when
filling the day tank from the nav station. Once I get an accurate
measure of the flow rate I can calibrate a timer to transfer an exact
amount of fuel to the day tank. That should simplify fuel management.
Just set the timer, make a log entry and forget it.

I see my set up not so much as a fuel polishing system as a pre-filter.
As a practical matter, full polishing is rather rarely required.
When I do get a gunked up load I will just have set it to recirculate
and sacrifice a filter. I understand that Parker/Racor makes a
washable diesel filter but I can't find any data on it.

Doug Dotson wrote:


Sounds like a good system. I've designed mine so that a reversing
pump is not necessary, and I can switch the filter in or out. The
idea is that bypassing the filter I can transfer fuel faster if the
fuel is already clean. One poster mentioned that Raycor type filters
don;t make good polishing filters because they are surface filters and
clog up quickly. The paper towel and toilet paper types are better
for polishing. I was always thinking of using Raycors but now I have to
do some more research.

Doug

"Glenn Ashmore" wrote in message
news:nZ%wb.52966$xV6.15766@lakeread04...


Doug,

I have been through this myself. Actually you do have more of a filter
problem than a pump problem. The 500 is just to small for a practical
polishing system. You need a 1000 at a minimum.

The smallest transfer pumps (Reverso) are rated at 180 GPH at zero
head
which is the max rating for the 1000. Racor says that when you get
close to the max rating the turbine can scour water out of the bowl
but
you have head loss in the piping and the filter itself so the actual
flow will be somewhat below the max rating. It would take four 1000's
to keep up with a Jabsco VR050 and two to handle a Groco SP06.

While the Reverso filters can handle up to 15 PSI, Reverso incourages
upstream installation to avoid the possibilities of pressureized
leakage
and slightly better filtering performance.

My system consist of 40 gal port and stbd mains and a 30 gal "day"
tank.
The mains have Racor 1000s on their pickup lines and there is no
external fill for the day tank. Any fuel reaching it has to go
through
a filter first. I am using the Reverso GP301 3 GPM reversable with
four
check valves and two 3-way selector valves.

By changing the direction of the pump rotation I can pull from either
main tank and with one 3-way selector can route the output to any of
the
three tanks. The second 3-way allows me to bypass the day tank and
pull

from either of the mains should the Reverso crap out. With this

arangement I can fill the day tank with freshly filtered fuel, polish
a
single tank or move fuel to the windward tank for trim. Whenever fuel
moves it gets filtered.



Doug Dotson wrote:


I am designing a fuel polishing and transfer system. My thought
is to use valves to route fuel from any tank to any tank. No
problem with that part. I want to be able to just transfer fuel
or switch in a filter to polish the fuel while transferring. Since
I can select the same tank for source and destination, I can
polish fuel in place as well. The problem comes with the selection
of a pump. I was looking at a Groco or Jabsco pump which seems
good for transfer purposes, but way exceeds the flowrate of the
filter when polishing. A Walbro fuel pump (which I have as a priming
pump now) seems like a good fit for polishing (33 GPH) but will be
slow
when just transferring fuel. What happens when a 5.5 GPM pump
(Jabsco) is pushing fuel through a filter rated at 60 GPH (RACOR
500)?

Thanks!
Doug
s/v Callista




--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or
lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com




--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com





--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

Can you transfer fuel between the mains? If so, how do you prevent
overflow there?

Doug

"Glenn Ashmore" wrote in message
news:278xb.53074$xV6.39166@lakeread04...
The vent on the day tank goes to the return port of the main tanks to
handle the overflow. Return from the engine goes to the day tank so if
the transfer pump craps out running the engine off of one of the mains
will gradually refill the day tank.

Doug Dotson wrote:

I guess it depend upon how the plumbing is designed whether or not
a reversing pump is necessary. My design is totally separate from the
supply/return system used by the engine and genset.

How do you protect against overfilling a tank?

Doug

"Glenn Ashmore" wrote in message
news:rE3xb.53022$xV6.495@lakeread04...

I did the reversing pump so I can select which main to draw from when
filling the day tank from the nav station. Once I get an accurate
measure of the flow rate I can calibrate a timer to transfer an exact
amount of fuel to the day tank. That should simplify fuel management.
Just set the timer, make a log entry and forget it.

I see my set up not so much as a fuel polishing system as a pre-filter.
As a practical matter, full polishing is rather rarely required.
When I do get a gunked up load I will just have set it to recirculate
and sacrifice a filter. I understand that Parker/Racor makes a
washable diesel filter but I can't find any data on it.

Doug Dotson wrote:


Sounds like a good system. I've designed mine so that a reversing
pump is not necessary, and I can switch the filter in or out. The
idea is that bypassing the filter I can transfer fuel faster if the
fuel is already clean. One poster mentioned that Raycor type filters
don;t make good polishing filters because they are surface filters and
clog up quickly. The paper towel and toilet paper types are better
for polishing. I was always thinking of using Raycors but now I have to
do some more research.

Doug

"Glenn Ashmore" wrote in message
news:nZ%wb.52966$xV6.15766@lakeread04...


Doug,

I have been through this myself. Actually you do have more of a filter
problem than a pump problem. The 500 is just to small for a practical
polishing system. You need a 1000 at a minimum.

The smallest transfer pumps (Reverso) are rated at 180 GPH at zero
head
which is the max rating for the 1000. Racor says that when you get
close to the max rating the turbine can scour water out of the bowl
but
you have head loss in the piping and the filter itself so the actual
flow will be somewhat below the max rating. It would take four 1000's
to keep up with a Jabsco VR050 and two to handle a Groco SP06.

While the Reverso filters can handle up to 15 PSI, Reverso incourages
upstream installation to avoid the possibilities of pressureized
leakage
and slightly better filtering performance.

My system consist of 40 gal port and stbd mains and a 30 gal "day"
tank.
The mains have Racor 1000s on their pickup lines and there is no
external fill for the day tank. Any fuel reaching it has to go
through
a filter first. I am using the Reverso GP301 3 GPM reversable with
four
check valves and two 3-way selector valves.

By changing the direction of the pump rotation I can pull from either
main tank and with one 3-way selector can route the output to any of
the
three tanks. The second 3-way allows me to bypass the day tank and
pull

from either of the mains should the Reverso crap out. With this

arangement I can fill the day tank with freshly filtered fuel, polish
a
single tank or move fuel to the windward tank for trim. Whenever fuel
moves it gets filtered.



Doug Dotson wrote:


I am designing a fuel polishing and transfer system. My thought
is to use valves to route fuel from any tank to any tank. No
problem with that part. I want to be able to just transfer fuel
or switch in a filter to polish the fuel while transferring. Since
I can select the same tank for source and destination, I can
polish fuel in place as well. The problem comes with the selection
of a pump. I was looking at a Groco or Jabsco pump which seems
good for transfer purposes, but way exceeds the flowrate of the
filter when polishing. A Walbro fuel pump (which I have as a priming
pump now) seems like a good fit for polishing (33 GPH) but will be
slow
when just transferring fuel. What happens when a 5.5 GPM pump
(Jabsco) is pushing fuel through a filter rated at 60 GPH (RACOR
500)?

Thanks!
Doug
s/v Callista




--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or
lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com




--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com





--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

Subject: Fuel transfer/polishing pump
From: "Doug Dotson"

Unfortunately that fuel clogs up the filters. That is the entire problem.
Having clean fuel in the engine fuel system avoids the problem.


Just go up a size or two in your filters. The surface area difference between a
500 Racor and a 900 Racor is tremendous.
Many times on a boat with filter clogging problems, I have just installed a
larger filter system and the time between changes has gone back to normal with
no more clogging in heavy seas problems.

Capt. Bill

Subject: Fuel transfer/polishing pump
From: "Doug Dotson"

Unfortunately that fuel clogs up the filters. That is the entire problem.
Having clean fuel in the engine fuel system avoids the problem.


Just go up a size or two in your filters. The surface area difference between a
500 Racor and a 900 Racor is tremendous.
Many times on a boat with filter clogging problems, I have just installed a
larger filter system and the time between changes has gone back to normal with
no more clogging in heavy seas problems.

Capt. Bill

Makes sense, but there is quite alot of evidence out there that
a polishing system is a good thing to have. I can't really
increase the size of my on-engine filter. I could increase the
size of the Raycor, but at the pore sizes I run (30 micron) in it make it
necessary to change the on-engine filter regularly as well.
Bigger Raycor won't fix the problem.

Doug

"LaBomba182" wrote in message
...
Subject: Fuel transfer/polishing pump
From: "Doug Dotson"

Unfortunately that fuel clogs up the filters. That is the entire problem.
Having clean fuel in the engine fuel system avoids the problem.


Just go up a size or two in your filters. The surface area difference
between a
500 Racor and a 900 Racor is tremendous.
Many times on a boat with filter clogging problems, I have just installed
a
larger filter system and the time between changes has gone back to normal
with
no more clogging in heavy seas problems.

Capt. Bill