racor vacuum gauge in a remote installation? - SailNet Community

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  #1  
Old 04-02-2008
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racor vacuum gauge in a remote installation?

I have fuel contamination problems and as a pat of the fix I have installed a racor vacuum gauge on top of the filter. I plan to install a parallel racor and at that time move the guage so that it can show vacuum from either guage.

I was thinking that it would be nice to know if your filter vacuum is climbing WHILE you are motoring at the helm. Currently you must occasionally pull up a floorboard and view the guage near the filter in the bilge.

My question is, can you install a racor vacuum gauge on a long hose, far away from the filter? Say 15 feet away? Would I need a special hose, check valves or any other exotic equipment?

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Old 04-02-2008
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Generally straight forward.

Go to designatedengineer.com - he's got all the stuff, good on-line advice and sells on ebay. Even got him on the phone.

I've bought a vac gauge set up from him but not yet installed at my helm station.
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No, it won't matter how far away.
Have you though of running a pressurised fuel system?
I fitted a 5 psi Stewart Warner pump, between tank and Racor, and it is serving me well. The last one lasted at least 15 years.
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I have dual filters and a vacuum gauge mounted about 10 feet away where I can see it from the helm. No problem.
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A pressurized fuel system means that you won't have to bleed the engine, but will run the risk of a fuel leak. However, fuel leaks with diesel fuel are relatively safe to deal with, due to the fuel's higher ignition temperature and lower volatility.
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Quote:
Originally Posted by Rockter View Post
No, it won't matter how far away.
Have you though of running a pressurised fuel system?
I fitted a 5 psi Stewart Warner pump, between tank and Racor, and it is serving me well. The last one lasted at least 15 years.
I have not considered running a pressurized fuel system.... Now I am.... What I had in mind was putting an electric fuel pump between the racor and the engine mounted filter in PARALLEL (with valves to select) so that I could use it for instant engine bleeding. I was going to mount it between filters to protect it from future diesel contamination. I hadn't yet done research on what type of pump to run. Thanks for the suggestion for the Stweart Warner, I'll look into that.

Would I be able to continue to run this electric pump with the engine off as a kind of fuel polishing system? Would it flow through the engine and through the return or would it stop at the high pressure pump?

Thanks for the advice! Now, back to the bilge......

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Med...

The pump has a shut-off on it when the pressure reaches 5 psi. With motor off, there is the occasional "rat-tat" from it as it recovers the 5 psi. When the motor is running it is an intermittent "rat-tat-tat.... rat-tat-tat".

They are not expensive, at about $80. I bought two of them.

I fitted the pump to a "fuel platform" that has the Racor filter on it too. Both come away for maintainence.



There is a fire risk, but I got fed up tracing air leaks on an older motor. I have not had a motor stop for about 12 years now.
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Old 04-03-2008
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Would not a buzzer at the helm accomplish the same thing? It can't be more difficult to rig than a low-oil-pressure alarm. Just calibrate it for whatever you consider to be excessive suck, and otherwise ignore it, unless you are trying to diagnose something.
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Quote:
Originally Posted by Valiente View Post
Would not a buzzer at the helm accomplish the same thing? It can't be more difficult to rig than a low-oil-pressure alarm. Just calibrate it for whatever you consider to be excessive suck, and otherwise ignore it, unless you are trying to diagnose something.
Nothing beats having the visual displays - you want to catch it before it happens not after the fact....IMHO
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Under power, unless the buzzer is really loud and obnoxious, it may not be heard.
Quote:
Originally Posted by Valiente View Post
Would not a buzzer at the helm accomplish the same thing? It can't be more difficult to rig than a low-oil-pressure alarm. Just calibrate it for whatever you consider to be excessive suck, and otherwise ignore it, unless you are trying to diagnose something.
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