|
|
|
|
|||||
|
||||||
(no email)
Date: Wed Jun 28 2006 - 09:18:52 EDT
Thanks for all the replies. Before I changed the filters, the port engine
was running rough with the vacuum gauge bouncing around in the yellow area.
After dropping in the 2 micron, engine fired up immediately and ran very
smooth with a steady gauge in the white. Obviously, a clean 2 micron does
not restrict fuel flow to the Lehman 225. However, it may require changing
more often than a 10 micron, but at around $10 a piece, that does not
present much of issue if it helps to keep the fuel cleaner and delays the
need for changing the on-engine filters, which are a pain to replace.
Thanks again
Greg Steckel
M/V Different Drummer
President 35 Sundeck
www.chesapeaketrawlering.com
www.fmyc.org
----- Original Message -----
From: Brent Hodges
To:
Sent: Wednesday, June 28, 2006 8:52 AM
Subject: T&T: Lehman return rate, was Fuel Filter Size for Racor 900
From: "Keith" <>
Since my Lehman 135 uses about 3 gallons per hour, with very little
return,
I seem to be fine with
> two micron filters there. (endsnip)
Not that it makes much difference, especially with a 90 gal / hour filter,
but thought I'd relay a conversation I had with Bob Smith when I took his
diesel course at a T-Fest. I was trying to figure out how to put a fuel
flow
meter on my boat without spending $1500 for the diesel models, when you
can
buy the gas models for not much over $100. I had what I thought was a
brilliant idea to simply T the return line back into the line going to the
fuel pump, then put the simple fuel flow meter back behind the T. I had
actually seen an older Grand Banks with the 120's that apparently had
always
been plumbed that way with the return T'd back in (minus the fuel flow
meter) and it obviously had been working. When I ask Bob about doing this
he
warned not to. He said that the reputation of minute fuel return was
earned
by the 120's, but that the newer generation engines like the 135's had a
significantly larger fuel return than the 120's. I assume, and didn't ask,
that it was because of the different type of injector pump. He told me
that
if I did the "T thing" on my 135's that it "might" induce too much air and
/
or turbulance in the incoming fuel and cause me problems.
Anyway, like I said the Racor 900's, of even the 500's like I have are so
much overkill for such a small engine like the Lehmans that running the 2
micron filters would hardly be a problem.
Brent Hodges
"Friendship"
43 Albin with SP135's
_______________________________________________
http://lists.samurai.com/mailman/listinfo/trawlers-and-trawlering
To unsubscribe send email to
with the word
UNSUBSCRIBE and nothing else in the subject or body of the message.
Trawlers & Trawlering and T&T are trademarks of Water World
Productions. Unauthorized use is prohibited.
_______________________________________________
http://lists.samurai.com/mailman/listinfo/trawlers-and-trawlering
To unsubscribe send email to
with the word
UNSUBSCRIBE and nothing else in the subject or body of the message.
Trawlers & Trawlering and T&T are trademarks of Water World
Productions. Unauthorized use is prohibited.
|