2nd Gen Non-Engine/Transmission Anyone Install a Flow Scan Fuel System?

[kscheffler]

Floscan Instrument Co. Inc.



My fuel gauge is starting to read off by 1/4 tank. Instead of replacing the float element based system I was thinking about installation a flow scan system that is widely used in the marine industry. I believe the above link is the system we would use for our trucks. I did a search and did not come up with any thing; someone must have done this all ready? Any thoughts; looks like they are about $1200 so this is not a cheap tank guage?

 

[KLockliear]

As you said, prevalent in the marine industry. For a less-expensive alternative, look into the Lowrance LMF-200. Same flow reading capability. Not sure how it would handle the return style system in the trucks though. It would have to measure supply and subtract return.

 

[kscheffler]

Flow Rate

Flow scan wants to know the flow rate to our engines. Does anyone know the flow rate for 350 HP?

 

[AH64ID]

My dads commercial fishing boat had one. . VERY accurate.



As far as flow rated do you have the stock fuel pump?

 

[KLockliear]

Rule of thumb is 1GPH per 10 hp. So 350hp = ~35GPH

 

[kscheffler]

I do still have my stock pump I have it located on the frame. SOme day I change to an air dog so maybe I should just tell them 75 to 150 gph and see what they recommend.

 

[AH64ID]

They have 2 setups... 0-48 gph and 30-something big.

 

[KLockliear]

You want the 0-48. Be aware though, I believe the internals of their meters may be fairly small and limit total flow. I have heard they are designed for 3/8" lines, but are 5/16" or smaller internally.

 

[AH64ID]

You want the 0-48. Be aware though, I believe the internals of their meters may be fairly small and limit total flow. I have heard they are designed for 3/8" lines, but are 5/16" or smaller internally.

I would think the 30+ is a better fit. Especially since the 0-48 is only for 1/4" adapters. . and the larger has 1" connections...

 

[BarryG]

This option sounds expensive but great. However I went a different route after several senders. I installed a capacitance type sender in my tank -no float, no moving parts. It uses the stock gauge and wiring and I think total cost to me was $65. 00 for sender, shipping and few odd wire connectors I picked up at my local auto parts store.



The company was centroid CENTROID PRODUCTS - Computerized Tank Display - Electronic Senders - capacitive fuel gauges I did not use their computank or whatever it was called as that gets expensive as well. I used just the sender. You cant use the industry standard but they will make the ones we need for no extra charge. The thread below tells /shows what I did.

https://www.turbodieselregister.com...el-sender-capacitance-type-install-notes.html



Just another option in addition to the floscan. Also in that thread it looks like isspro might have a sender option worth looking at as well.

 

[KLockliear]

I would think the 30+ is a better fit. Especially since the 0-48 is only for 1/4" adapters. . and the larger has 1" connections...

What is it you are trying to measure? At idle, the truck will be using a very small amount of fuel. Perhaps 1. 5gph... that won't even read on the 30GPH gauge. You won't get the 30-??? gauge to read until you are almost at WOT. What's the point?



The gauge setup that is designed to read 30-??? GPH is likely for very large engines, that burn a minimum of 30GPH - so at idle you don't fall off the bottom of the scale.

 

[AH64ID]

What is it you are trying to measure? At idle, the truck will be using a very small amount of fuel. Perhaps 1. 5gph... that won't even read on the 30GPH gauge. You won't get the 30-??? gauge to read until you are almost at WOT. What's the point?

The gauge setup that is designed to read 30-??? GPH is likely for very large engines, that burn a minimum of 30GPH - so at idle you don't fall off the bottom of the scale.

Its not a 1-48gph gauge and 30+ gauge, that is the size of the senders. Remember a diesel flows the same amount of fuel at idle as it does at WOT, for the most part. So they way a flow scan works is that it measures flow from the tank and flow to the tank, and the difference is what the engine used. Even the 30+ will display . 1gph. So you need a setup that measures your total flow, not your burn flow. Pumps like FASS and AD are 95 or 150gph...