Sending Unit - Best Place to Buy and Questions
#1013512
06/14/11 10:20 PM
06/14/11 10:20 PM
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Joined: Jul 2003
Posts: 1,212 Canton, Ohio
Crazy68Dart
OP
pro stock
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OP
pro stock
Joined: Jul 2003
Posts: 1,212
Canton, Ohio
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I am seeing a fairly significant range of prices. Looking for a sending unit for the Dart, 1/2" pickup.
Thanks.
I see there is an offering with a 1/4" return, but only offered in 3/8". The 1/4" return would be nice as I need a 1/4" return from the pressure regulator to help fight off vapor lock.
How do you guys typically handle this? Drill the sending unit or return into the fill tube somehow? The latter seems like it might not be a great idea... hmm.
Also, 1/2" may be overkill. I would guess 3/8" could supply lots of HP.
Last edited by Crazy68Dart; 06/14/11 10:43 PM.
383, Hemi 4-Speed, AlterKtion, D60
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Re: Sending Unit - Best Place to Buy and Questions
[Re: Kern Dog]
#1013515
06/15/11 07:29 AM
06/15/11 07:29 AM
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Joined: Jul 2003
Posts: 1,212 Canton, Ohio
Crazy68Dart
OP
pro stock
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OP
pro stock
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Posts: 1,212
Canton, Ohio
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Quote:
Has the quality improved at all? I have read many times that people had exactly the same problems that I have....FULL tank, guage reads 5/8 to 3/4. Half tank, guage reads 1/4. 1/4 tank of fuel, guage rests on the E line. This is terrible.
Wow, after market piece with quality issues, there is a surprise.... not what I wanted to hear.
Anyone have any luck modifying the stock unit, removing the line, and replacing with larger?
383, Hemi 4-Speed, AlterKtion, D60
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Re: Sending Unit - Best Place to Buy and Questions
[Re: stateroadhog]
#1013518
06/15/11 11:34 AM
06/15/11 11:34 AM
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Joined: May 2005
Posts: 416 Franklin Co. Illinois
runinonmt
mopar
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mopar
Joined: May 2005
Posts: 416
Franklin Co. Illinois
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Quote:
bought mine from 521 resterations. Called and asked about calibration told me they were all checked to be accurate. Well same problem reads 3/4 when full, reads 1/2 with just 5 gals gone. Is there a fix for this?
If this continues to get worse I would suspect a sinking float. I also got mine from 521 Restorations. When I got mine I checked it myself. It was within factory spec. When finished I put in 2 1/2 Gals. of gas and drove to the station where I added 5 more. Read just under half full. Time to check up the line. A common problem is resistance or shorts in the connectors and wiring. Be sure the ground strap is properly connected to CLEAN metal. Check continuity from the sending unit wire to the back of the gauge. Also check for resistance to ground with the sender and gauge wires unhooked. A high resistance short here would make the gauge read high.The gauge cluster voltage regulator is usually either good or bad. If you'd like to reda more: http://www.allpar.com/history/mopar/electrical2.html Hope this is helpful Ron
Last edited by runinonmt; 06/15/11 11:39 AM.
In sixty-five I was seventeen and running up one-o-one
I don't know where I'm running now, I'm just running on
Jackson Browne-Running On Empty
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Re: Sending Unit - Best Place to Buy and Questions
[Re: stateroadhog]
#1013522
06/15/11 10:06 PM
06/15/11 10:06 PM
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Joined: Jul 2003
Posts: 1,212 Canton, Ohio
Crazy68Dart
OP
pro stock
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OP
pro stock
Joined: Jul 2003
Posts: 1,212
Canton, Ohio
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The issue with a fuel gauge is that they are not linear. What needs to be accurate is when it is full (at least close), but more importantly when they are empty. I think between these points anything is "fair game". http://auto.howstuffworks.com/fuel-gauge.htm
383, Hemi 4-Speed, AlterKtion, D60
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Re: Sending Unit - Best Place to Buy and Questions
[Re: Crazy68Dart]
#1013524
06/15/11 10:35 PM
06/15/11 10:35 PM
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Joined: Jan 2007
Posts: 7,664 IN
ahy
master
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master
Joined: Jan 2007
Posts: 7,664
IN
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Quote:
Quote:
Has the quality improved at all? I have read many times that people had exactly the same problems that I have....FULL tank, guage reads 5/8 to 3/4. Half tank, guage reads 1/4. 1/4 tank of fuel, guage rests on the E line. This is terrible.
Wow, after market piece with quality issues, there is a surprise.... not what I wanted to hear.
Anyone have any luck modifying the stock unit, removing the line, and replacing with larger?
The basic process for adding a larger pickup is to remove the old and drill out the hole a little undersize for the new tube. Then use a drift to enlarge the hole so it makes a small flange or raised area to grip the new tube tightly. Then solder in with a high power iron or torch. I've never done it... and don't plan to try but that is the basic approach.
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Re: Sending Unit - Best Place to Buy and Questions
[Re: Kern Dog]
#1013526
06/16/11 09:44 AM
06/16/11 09:44 AM
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Joined: Dec 2004
Posts: 5,278 San Jose, California
DennisH
Vacation
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Vacation
Joined: Dec 2004
Posts: 5,278
San Jose, California
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Quote:
Has the quality improved at all? I have read many times that people had exactly the same problems that I have....FULL tank, guage reads 5/8 to 3/4. Half tank, guage reads 1/4. 1/4 tank of fuel, guage rests on the E line. This is terrible.
Same here, new tank and unit.
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Re: Sending Unit - Best Place to Buy and Questions
[Re: DennisH ]
#1013527
06/16/11 01:53 PM
06/16/11 01:53 PM
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Joined: Jul 2003
Posts: 1,212 Canton, Ohio
Crazy68Dart
OP
pro stock
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OP
pro stock
Joined: Jul 2003
Posts: 1,212
Canton, Ohio
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Hmm, maybe I'll weld a sump to my brand new tank and use the 5/16" as the return off the original sending unit. At least I know the thing works, at least it did 9 years ago when I pulled the car apart.
383, Hemi 4-Speed, AlterKtion, D60
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Re: Sending Unit - Best Place to Buy and Questions
[Re: DennisH ]
#1013528
06/16/11 02:37 PM
06/16/11 02:37 PM
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Joined: Nov 2008
Posts: 1,565 tennessee
pushbutton
pro stock
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pro stock
Joined: Nov 2008
Posts: 1,565
tennessee
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Quote:
Quote:
Has the quality improved at all? I have read many times that people had exactly the same problems that I have....FULL tank, guage reads 5/8 to 3/4. Half tank, guage reads 1/4. 1/4 tank of fuel, guage rests on the E line. This is terrible.
Same here, new tank and unit.
Mine reads the same.
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Re: Sending Unit - Best Place to Buy and Questions
[Re: stateroadhog]
#1013531
06/16/11 08:38 PM
06/16/11 08:38 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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You've verified a good ground & I was thinking maybe a person could add a resistor in series to up the resistance to reduce voltge to shift the needle back to dead on E when the float is at the bottom of it's travel BUT w it's showing a diff reading each time I'd eyeball the windings & see what's changing/shorting as something is or there is a poor connection somewhere that is changing the ohms but you are physically moving the float/arm between tests so I'd zero in on the windings & check that the arm that slides on the windings has enough tension down on the windings or anything else that dont look kosher.
live every 24 hour block of time like it's your last day on earth
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