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

I don't think mine is a well built marine fuel tank. But is what I have.
I'll know more when I open it up this winter an peer inside.


Let us know what you find.

Capt. Bill

Subject: Fuel transfer/polishing pump
From: "Len Krauss"

No offense -- but have you?

Yes.

They're are not solid top to bottom as you seem
to suggest.

No I didn't.

The plate bottoms, in particular, usually have tunnels.

That's my point. It takes much more aggressive agitation than "bubbling" in one
baffled area to get the fuel stirred up and moving through your "tunnels".

Capt. Bill

Subject: Fuel transfer/polishing pump
From: "Len Krauss"

No offense -- but have you?

Yes.

They're are not solid top to bottom as you seem
to suggest.

No I didn't.

The plate bottoms, in particular, usually have tunnels.

That's my point. It takes much more aggressive agitation than "bubbling" in one
baffled area to get the fuel stirred up and moving through your "tunnels".

Capt. Bill

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

They have to, and there is usually a hole through the baffles at the
lowest point of each baffle.

Have to what?

Capt. Bill

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

They have to, and there is usually a hole through the baffles at the
lowest point of each baffle.

Have to what?

Capt. Bill

Subject: Fuel transfer/polishing pump/on a mini tear
From: Brian Whatcott

On 29 Nov 2003 20:46:04 GMT, (LaBomba182) wrote:

Subject: Fuel transfer/polishing pump
From: Brian Whatcott

Ahem...you meant mineral lubricating oil, rather than
mineral fuel oil?

Yeah, that's what he means.
And check out the tolerances in a "mineral oil" lubricating pump verses the
tolerances in a "mineral oil" fuel injector pump.
Then maybe you will grasp why proper "mineral oil" fuel filtration is more
critical than "mineral oil" lubrication filtation.

Capt. Bill

You are off-beam,

Perhaps. But my point is that just because fuel oil and lubricating oil come
from the same base material does not mean that they are filtered in the same
way with the same filter materials or to the same standards with no thought as
to how they are being used.

in my not so humble view.

That makes two of us.


But then if you prefer to
be addressed as "Capt." I can suppose that your opinion is not that of
an engineer?

You'd be right.
And I believe it was engineers who assured the Captain of the Titanic that it
was unsinkable.


So, do you have opinions on brain surgery for me to grasp too?

Yes.
Try not to have it done if you can.

You have one those as well, after all!
:-)

True.
Thanks for noticing.

(no offence)

No offense taken. :-)

Capt. Bill

Subject: Fuel transfer/polishing pump/on a mini tear
From: Brian Whatcott

On 29 Nov 2003 20:46:04 GMT, (LaBomba182) wrote:

Subject: Fuel transfer/polishing pump
From: Brian Whatcott

Ahem...you meant mineral lubricating oil, rather than
mineral fuel oil?

Yeah, that's what he means.
And check out the tolerances in a "mineral oil" lubricating pump verses the
tolerances in a "mineral oil" fuel injector pump.
Then maybe you will grasp why proper "mineral oil" fuel filtration is more
critical than "mineral oil" lubrication filtation.

Capt. Bill

You are off-beam,

Perhaps. But my point is that just because fuel oil and lubricating oil come
from the same base material does not mean that they are filtered in the same
way with the same filter materials or to the same standards with no thought as
to how they are being used.

in my not so humble view.

That makes two of us.


But then if you prefer to
be addressed as "Capt." I can suppose that your opinion is not that of
an engineer?

You'd be right.
And I believe it was engineers who assured the Captain of the Titanic that it
was unsinkable.


So, do you have opinions on brain surgery for me to grasp too?

Yes.
Try not to have it done if you can.

You have one those as well, after all!
:-)

True.
Thanks for noticing.

(no offence)

No offense taken. :-)

Capt. Bill

Two kinds of water in fuel oil ..... free water (gravity drains to
lowest portion of system) water/oil emulsion (stays in the fluid as a
suspension and doesnt settle quickly.

Two kinds of water in fuel oil ..... free water (gravity drains to
lowest portion of system) water/oil emulsion (stays in the fluid as a
suspension and doesnt settle quickly.

The memo from Yanmar (via Mack Boring) didn't make any distinction
on type of filter. Just the porosity on the element. Perhaps it was a CYA
move to specify anything smaller than 30 uM.

Doug

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

Because small filters ahead of the lift pump stress the pump and cause
premature failure. No fun.


Not if you run a large enough (as in surface area) filter and change it
regularly. At 1 - 5 gph through a Racor 900 I don't see how you could over
stress a well built lift pump.


Capt. Bill