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TWL: Fuel System Vacuum Gauge

MW
Martin_WJ@prodigy.net
Sun, Mar 10, 2002 6:31 PM

Anyone know what happens if you put a couple of pounds of pressure on a
Racor vacuum gauge?  Does it damage it, or just not read properly for the
moment?  It's not clear to me that the Racor gauges are compound gauges.

Specifically, consider a polishing system with a depth filter, a pump with
a 2 PSI return, then Racor filters to the engines.  If the Racors are
completely clean, and the pump was running there would be a positive
pressure of up to 2psi at the gauge.  Would this damage it?

Trying to figure out what to keep and what to replace in changing things
around...

Bill Martin
Telegraph Hill

Anyone know what happens if you put a couple of pounds of pressure on a Racor vacuum gauge? Does it damage it, or just not read properly for the moment? It's not clear to me that the Racor gauges are compound gauges. Specifically, consider a polishing system with a depth filter, a pump with a 2 PSI return, then Racor filters to the engines. If the Racors are completely clean, and the pump was running there would be a positive pressure of up to 2psi at the gauge. Would this damage it? Trying to figure out what to keep and what to replace in changing things around... Bill Martin Telegraph Hill
C
captnwil@earthlink.net
Sun, Mar 10, 2002 10:40 PM
  1. The 2-psi will not harm the Racor gauge, but!

  2. All, except the primary fuel filter on the engine, should be on the
    suction side of the polishing pump?  If the filter housing develops a leak,
    you will pump diesel into the bilge if the filters are one the discharge
    side of the pump.  Unless the leak is small, you won't know it for a long
    time.  That could spell disaster.

If the filters are on the suction side of the pump, any leak in the filter
will allow air to enter.  Your engine will tell you of the problem
immediately because it will start to run in a most disturbing way.

  1. If your fuel tank is bottom feed, in most cases, there will be a
    positive head on the filter most of the time.

Good Luck!
CaptnWil

----- Original Message -----
From: "Bill Martin" Martin_WJ@prodigy.net
To: trawler-world-list@samurai.com
Sent: Sunday, March 10, 2002 1:31 PM
Subject: TWL: Fuel System Vacuum Gauge

Anyone know what happens if you put a couple of pounds of pressure on a
Racor vacuum gauge?  Does it damage it, or just not read properly for the
moment?  It's not clear to me that the Racor gauges are compound gauges.

Specifically, consider a polishing system with a depth filter, a pump with
a 2 PSI return, then Racor filters to the engines.  If the Racors are
completely clean, and the pump was running there would be a positive
pressure of up to 2psi at the gauge.  Would this damage it?

Trying to figure out what to keep and what to replace in changing things
around...

Bill Martin
Telegraph Hill

1. The 2-psi will not harm the Racor gauge, but! 2. All, except the primary fuel filter on the engine, should be on the suction side of the polishing pump? If the filter housing develops a leak, you will pump diesel into the bilge if the filters are one the discharge side of the pump. Unless the leak is small, you won't know it for a long time. That could spell disaster. If the filters are on the suction side of the pump, any leak in the filter will allow air to enter. Your engine will tell you of the problem immediately because it will start to run in a most disturbing way. 3. If your fuel tank is bottom feed, in most cases, there will be a positive head on the filter most of the time. Good Luck! CaptnWil ----- Original Message ----- From: "Bill Martin" <Martin_WJ@prodigy.net> To: <trawler-world-list@samurai.com> Sent: Sunday, March 10, 2002 1:31 PM Subject: TWL: Fuel System Vacuum Gauge > Anyone know what happens if you put a couple of pounds of pressure on a > Racor vacuum gauge? Does it damage it, or just not read properly for the > moment? It's not clear to me that the Racor gauges are compound gauges. > > Specifically, consider a polishing system with a depth filter, a pump with > a 2 PSI return, then Racor filters to the engines. If the Racors are > completely clean, and the pump was running there would be a positive > pressure of up to 2psi at the gauge. Would this damage it? > > Trying to figure out what to keep and what to replace in changing things > around... > > Bill Martin > Telegraph Hill > >
B
bk@attglobal.net
Mon, Mar 11, 2002 5:30 AM

And there folks, is proof that Cap'n Wil is alive and kickin' !! Always good
to know you are out there and keeping an eye on us Cap'n Wil !!

-----Original Message-----
From: owner-trawler-world-list@samurai.com
[mailto:owner-trawler-world-list@samurai.com]On Behalf Of Wil Andrews
Sent: Sunday, March 10, 2002 2:40 PM
To: trawler-world-list@samurai.com; Bill Martin
Subject: TWL: Re: Fuel System Vacuum Gauge

And there folks, is proof that Cap'n Wil is alive and kickin' !! Always good to know you are out there and keeping an eye on us Cap'n Wil !! -----Original Message----- From: owner-trawler-world-list@samurai.com [mailto:owner-trawler-world-list@samurai.com]On Behalf Of Wil Andrews Sent: Sunday, March 10, 2002 2:40 PM To: trawler-world-list@samurai.com; Bill Martin Subject: TWL: Re: Fuel System Vacuum Gauge
B
bk@attglobal.net
Mon, Mar 11, 2002 6:13 AM

Hi, I am in the process of planning for some interior upholstery refurb.
It's a small boat and I got sticker shock when we started to estimate nearly
50 yds... oh boy I'm glad she owes me this huge favor 'cause that means this
would be a 2.5K job on a 20k boat otherwise!! Would love suggestions for
places to shop in the BC/WA/north OR area for DIY fabric, preferably
marine-ish man-mades. I am not too specific on colors (within
boat-reason!!), prefer to cash and carry. Your suggestions appreciated,
thanks in advance! ben

Hi, I am in the process of planning for some interior upholstery refurb. It's a small boat and I got sticker shock when we started to estimate nearly 50 yds... oh boy I'm glad she owes me this huge favor 'cause that means this would be a 2.5K job on a 20k boat otherwise!! Would love suggestions for places to shop in the BC/WA/north OR area for DIY fabric, preferably marine-ish man-mades. I am not too specific on colors (within boat-reason!!), prefer to cash and carry. Your suggestions appreciated, thanks in advance! ben