GPH sensor installation question

C

Carvervirgin

Member
Member
Joined
Jan 4, 2012
RO Number
32836
Messages
323
I have purchased and started to have installed a Faria fuel management system. One possible issue that we have run across is that the gas line is a 1/2 inch diameter and the sensor is 3/8th. I am concerned if the restriction may create a problem for the engine. Faria does not seem to have different sensors for different size engines. I have called them 3 times but have yet to receive a call back. Does anyone have an opinion or knowledge on this matter? Thanks
 
Should not be a problem. What size motors are you running?
 
quote:
Originally posted by Carvervirgin

Click to expand...
I would ask the manufacturer of the engine, not the fuel sensor.

I'm not an expert, but I don't believe a short restriction will hurt. If it's a large, high performance engine, I would be more concerned.
 
As long as your engine doesn't burn more GPH than the gauge and tranducer were designed for you will be fine.

If your 1/2 inch line is more than a few years old. Why don't you just get a few new 3/8 barbs and replace the whole line with 3/8?
 
My Garmin meters are also 3/8th. No problems at all.
 
Thanks for the feedback. The engines are 7.4 mercruisers, 310 hp. What type of Garmin are you running SLW?
 
CV, how is your project coming along?
 
SLW, I have been on hold waiting to get an answer on the fuel line step down issue. My fuel line is 1/2" and the sensor is 3/8th. I was afraid that the restriction would create a problem for the engine. I finally talked to Faria and to a mechanic I trust and who has installed many of these and apparently there is no issue. Also, the retailer I bought them from 3 weeks ago had a sale and the kits were 40.00 cheaper. They wouldn't credit me the difference so for $80 I sent them back and reordered 2 more. Should be here this week. One last issue was that the cable included was not long enough so now I am looking for shielded wire to extend to the fly bridge. I'll let you know when there in. Thanks for asking.
 
You should not worry about the size of the hose going to the transmitter. All transmitters have some type of small orifice which is used to measure the flow rate. This orifice will ultimately be the limiting factor on the maximum fuel flow, not the hose size.

Mike
 
When you mentioned the cable, I went to the Faria website to see how they interface to systems on the boat. Apparently, they don't. Unlike Flowscan, Garmin and Lowrance, which all have options to interface to GPS SOG data, the Faria units appear to be independent.

Powerboaters talk a lot about GPH, but without relating that to speed, it doesn't mean much. I find the economy and range calculations to be the most useful data that my metering system provides. Because of some of the questionable features (or lack thereof) that I ranted about in the other post, I have manually calculated additional data while at the helm. You could do that too of course, but since it's not too late to turn back, I recommend that you at least consider a NMEA-capable solution.
 
You must log in or register to reply here.
Back
Top