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#985088 - Sun Nov 10 2013 09:55 AM Ohm resistance for fuel gauge / sending unit
chopperguy16 Offline
New Guy
Registered: Wed Feb 24 2010 05:07 PM
Posts: 6
Loc: Ct.
Can anyone tell me if the ohm resistance for 1960-1966 is 0-30 for the fuel gauge.
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#985120 - Sun Nov 10 2013 12:09 PM Re: Ohm resistance for fuel gauge / sending unit [Re: chopperguy16]
3B Offline
Shop Shark
Registered: Wed Nov 09 2005 12:00 PM
Posts: 4908
Loc: B. C. Canada
Hy chopperguy16, I know they changed the sender and gauge from a 0 - 30 ohms to a 0 - 90 ohms somewhere in the 1960s. Classic Industries website lists 1964 and older as 0-30 ohms, and 1966 and newer as 0-90 ohms (I guess the 1965 vehicles didn't have fuel gauges). I did try looking in the parts book to pin down the year they changed, but with all the different models, each with their own sender I just got a headache, hope that info helps some.
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#985258 - Sun Nov 10 2013 08:21 PM Re: Ohm resistance for fuel gauge / sending unit [Re: chopperguy16]
Hot Rod John Offline
Shop Shark
Registered: Thu Jul 10 2008 08:45 PM
Posts: 1364
Loc: Central Colorado
Mid year 1966 they changed to 0-90 ohms

The previous models were 0-30 ohms
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#985485 - Mon Nov 11 2013 04:37 PM Re: Ohm resistance for fuel gauge / sending unit [Re: 3B]
chopperguy16 Offline
New Guy
Registered: Wed Feb 24 2010 05:07 PM
Posts: 6
Loc: Ct.
thanks for the info 3B
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#985489 - Mon Nov 11 2013 04:39 PM Re: Ohm resistance for fuel gauge / sending unit [Re: Hot Rod John]
chopperguy16 Offline
New Guy
Registered: Wed Feb 24 2010 05:07 PM
Posts: 6
Loc: Ct.
THANKS FOR THE INFO HOT ROD
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#1007453 - Sat Feb 15 2014 11:56 AM Re: Ohm resistance for fuel gauge / sending unit [Re: chopperguy16]
mycajah Offline
New Guy
Registered: Sat Dec 19 2009 10:03 AM
Posts: 4
Loc: Texas
Hi y'all. After finding bad fuel full of sediment downstream of the fuel pump on a '66/292 that I have owned for 15 years, I yanked the tank and found a very small leak in one of the corners, and a corroded sending unit. The gage has never worked. My mechanic tells me he could etch and seal the inside. The chemicals for this are $120 but he has chemicals from another tank. I found a replacement tank at Classic Industries for $150. I am wondering if anyone has experience with sealing the inside. I did a similar operation on a hypolon inflatable raft years ago and thought it worked well. Also, is the a visible difference between the 30 and 90 ohms sending unit. The replacement sending unit on websites is described as the 0-30 ohms. Thanks for the help.
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#1007475 - Sat Feb 15 2014 02:06 PM Re: Ohm resistance for fuel gauge / sending unit [Re: chopperguy16]
bartamos Offline
Shop Shark
Registered: Thu May 26 2005 12:00 PM
Posts: 3855
Loc: AZ
If a replacement tank is only $150, that is by far better. you will "mess" around with that tank, they will mess around with it and you will never know if all leaks are fixed and if they just coated over some rust/varnish. Subtract what they will charge from $150, that's your decision number. Three different vendor websites indicate 30 Ohm up thru 66. One site says ...."and some 67". If you buy one for a 1966 and it does not work, they will take it back because you did nothing wrong as long as gauge is original or equiv.
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#1007480 - Sat Feb 15 2014 02:27 PM Re: Ohm resistance for fuel gauge / sending unit [Re: chopperguy16]
mycajah Offline
New Guy
Registered: Sat Dec 19 2009 10:03 AM
Posts: 4
Loc: Texas
Thanks for the help. Once I put the tank in my basket, it went from available to out of stock. I'll get the 30 ohm sending unit and look for a tank thru the weekend. If I don't find one, I will give the chemicals a try.
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#1007501 - Sat Feb 15 2014 04:34 PM Re: Ohm resistance for fuel gauge / sending unit [Re: chopperguy16]
bartamos Offline
Shop Shark
Registered: Thu May 26 2005 12:00 PM
Posts: 3855
Loc: AZ
There are other vendors who do have the tanks at that price. Like Classic Parts of America, a sponsor here. Shipping is about $50.
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