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Go Back   ClassicBroncos.com Forums > Classifieds > For Sale - 66-77 Bronco Parts

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Old 10/05/20, 11:23 AM   #61
Mark1911
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Originally Posted by toddz69 View Post
Go back and re-read my comments in Post #18 on my thoughts regarding how much fuel I think will be left in the tank when this sender is on 'E'.

Todd Z.
Todd Z. Ok I just did some measurements the "old school" way as to exactly how many gallons will be left in the BC bronco "Sherman" tank and the 11" sender. I took the tank to the fuel station, empty of course and on a level surface. I started adding fuel until I reached 11" from the mounting position of the sender to the fuel level I put in the tank, yes your calculations as to how much fuel will be remaining when the gauge reads empty are absolutely correct! it's dead on three and a half gallons that will be remaining in the tank when the fuel gauge reads empty. But you already know that.....
Mark.
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Old 10/05/20, 11:45 AM   #62
toddz69
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Todd Z. Ok I just did some measurements the "old school" way as to exactly how many gallons will be left in the BC bronco "Sherman" tank and the 11" sender. I took the tank to the fuel station, empty of course and on a level surface. I started adding fuel until I reached 11" from the mounting position of the sender to the fuel level I put in the tank, yes your calculations as to how much fuel will be remaining when the gauge reads empty are absolutely correct! it's dead on three and a half gallons that will be remaining in the tank when the fuel gauge reads empty. But you already know that.....
Mark.
I like your methods! Always good to have some verification on what was just a quick measurement and calculation on my part. Based on what Paul wrote earlier this morning though, I'm curious at what point your gauge starts moving off of 'E'.

Todd Z.

Todd Zuercher
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Old 10/05/20, 11:49 AM   #63
Mark1911
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I like your methods! Always good to have some verification on what was just a quick measurement and calculation on my part. Based on what Paul wrote earlier this morning though, I'm curious at what point your gauge starts moving off of 'E'.

Todd Z.
Do not know as of yet, I am still in the process of making decisions and calculations before I purchase the sender and make modifications to the tank. I I am sorry I don't have more info.
Mark
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Old 10/05/20, 01:37 PM   #64
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I want everyone to be satisfied. It was designed for the 13-13.5 depth after talking with manufacturer and desire not to suck up bottom of tank junk. If there is a desire I can do a special order, thinking 13 inches long? Would need 10 people interested. They recommend at least 1 inch from bottom.
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Old 10/06/20, 06:48 AM   #65
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To clarify my measurement. I drained the tank before removing it by pumping the fuel out via the fuel pump into jerry cans. (Ha, I put the removed fuel in my empty F150).
Then I removed the tank and installed the DE sender and added exactly 5 gallons from a previously fill second jerry tank. I did not use the jerry tanks that I used for removing the fuel because a full tank is heavy and I did not measure the fuel removed. Anyway I drove 8 miles to the nearest gas station and recorded my gauge readings. it is possible that the new sender has a small degree of stickiness at the empty position, but none was detected before install?
For sure I would want a longer DE sender.
Eric, the sender should reach the bottom of the tank. The BC tank suction tube sucks from the bottom of the tank so the sender is of no consequences as to reaching the bottom of the tank.. Make it longer. Use Todd's measurements for the length and make it a 1/4 to 3/8 shorter than the distance from the square plate to the bottom of the tank
I hope this helps, PaulW
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Old 10/06/20, 07:09 AM   #66
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Mark & Todd
Remember the physics. The float in the new sender will need gas above the bottom float before moving due to the buoyancy of the float. That is why it is necessary to have the new sender as low as possible near the bottom of the tank. I like 1/4" clearance to account for possible manufacturing variations of the tank.

If either of you have the tank removed what is the measurement from the top of the square plate (including the gasket) to the bottom of the tank?
PW
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Old 10/06/20, 09:05 AM   #67
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Quote:
Originally Posted by hyghlndr View Post
I want everyone to be satisfied. It was designed for the 13-13.5 depth after talking with manufacturer and desire not to suck up bottom of tank junk. If there is a desire I can do a special order, thinking 13 inches long? Would need 10 people interested. They recommend at least 1 inch from bottom.

Id be happier with a taller sending unit range of motion. Maybe not the full 13 depth, but 12.5-.75?

That said, Im just happy to have a vague notion of how much gas I have!


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Old 10/06/20, 09:24 AM   #68
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The BC 23 gallon EFI tank I have is 14.5 from top of the plate to the bottom of the tank. What I've read is manufactures recommend anywhere from 1/2" to 1" from the bottom of the tank for the sender. I think a 14" sender would be perfect for the BC tank.
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Old 10/06/20, 05:50 PM   #69
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Old 10/06/20, 08:47 PM   #70
Mark1911
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Mark & Todd
Remember the physics. The float in the new sender will need gas above the bottom float before moving due to the buoyancy of the float. That is why it is necessary to have the new sender as low as possible near the bottom of the tank. I like 1/4" clearance to account for possible manufacturing variations of the tank.

If either of you have the tank removed what is the measurement from the top of the square plate (including the gasket) to the bottom of the tank?
PW
PW. Ok the BC tank measures 14.5 including the gasket to the bottom of the tank. I put 1.5 gal of fuel in the tank, level tank of course. And the measurement is 13 from plate gasket to the fuel level in the tank. Ill add more fuel tomorrow 1/2 gal at a time and post the measurements. Hopefully this is some sort of help. I always tend to complicate and way over think stuff.
Mark
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Old 10/06/20, 08:51 PM   #71
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Also I would think one to two gallons of reserve fuel, at the most, would be nice after the gauge reads empty. Not really a good idea to run on reserve though. But nice.
Mark.
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Old 10/09/20, 03:34 PM   #72
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Just received the sending unit and drilled the holes, I've got a WH Sherman tank and did not realize this would not reach the bottom. I too would like a longer unit if enough people are interested. Thanks, Jon
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Old 10/10/20, 12:28 AM   #73
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Put me on the list for a longer one also (BC Broncos tank).
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Old 10/15/20, 12:56 PM   #74
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I got mine (in person) the other day. Great looking sending unit. Ill hold onto it and install it the next time I drop my tank. Thanks Eric. Great job on theses.
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Old 10/23/20, 11:44 AM   #75
PDQ
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I am very interested in the "longer" version for the BC tank. Thank you

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