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 5Likes
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3
Post By bobcowan
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1
Post By twobjshelbys
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1
Post By bobcowan
04-27-2023, 02:41 PM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,453
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Neutral
Fuel Level Sender
It works!
As we all know, the fuel level sender is not that great. It's OK, and it works; in it's own way. But we all know it could be better.
A couple of weeks ago, someone posted on the FB group about this new Holley IR sender. Looked like the perfect thing, so I ordered one from Summit Racing. They said it was B/O until the end of May, But I received it in about a week.
Installation is pretty straight forward. It only took me about an hour. The stock sending unit has two wires - ground and gauge. The new one also needs power. I pulled that from the electric fuel pump next door.
I cut the pigtail off the original sender, and used that for the new one. Made it a simple plug in.
The bolt pattern is an exact match, and uses the same thread pitch for the new longer screws.
I still need to mess with the calibration a bit, but it works prefectly. Nice a smooth, appears to be pretty accurate. We'll see how it goes on the next road trip. 🙂
At some point, I want to change the gauges to something better. All I will need to do is recalibrate the sender.
I'm pretty happy about this. 🙂
__________________
.boB "Iron Man"
NASA Rocky Mountain TTU #42
www.RacingtheExocet.com
BDR #1642 - Supercharged Coyote, 6 speed Auto
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04-27-2023, 04:03 PM
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CC Member
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Join Date: Jan 2009
Location: Las Vegas,
NV
Cobra Make, Engine: Shelby CSX4005LA, Roush 427IR
Posts: 5,619
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Not Ranked
No fair. I always thought the mental calibration process for the fuel gauge was part of the Cobra fraternity hazing. 
__________________
Cheers,
Tony
CSX4005LA
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04-28-2023, 05:56 AM
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CC Member
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Join Date: Sep 2020
Posts: 84
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Not Ranked
Just ordered one. Thanks for sharing!
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04-28-2023, 08:03 AM
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CC Member
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Join Date: Feb 2006
Location: Gilroy,
CA
Cobra Make, Engine: SPF 2291, Whipple Blown & Injected 4V ModMotor
Posts: 2,740
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Not Ranked
Thanks for being the test case, Bob.
I had been looking at that sender for a couple of weeks now, mired in indecision. When you did your gauge calibration, were you calibrating for Nisonger/Smith gauges or some other gauge?
Thx,
__________________
Help them do what they would have done if they had known what they could do.
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04-30-2023, 07:14 PM
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CC Member
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Join Date: Oct 2022
Location: Perth Australia,
WA
Cobra Make, Engine: BDR 4.6 LTR 3V FRPP HOTROD CRATE ENGINE
Posts: 44
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Not Ranked
Will these sender units be a direct/ easy fit to the plastic fuel tanks?
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05-07-2023, 04:50 PM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,453
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Not Ranked
Quote:
Originally Posted by Highway 89
Will these sender units be a direct/ easy fit to the plastic fuel tanks?
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IDK. I've never seen a plastic tank. I don't know what the sender looks like for those. If it has 5 screws holding it in place, it is probably the same bolt pattern.
__________________
.boB "Iron Man"
NASA Rocky Mountain TTU #42
www.RacingtheExocet.com
BDR #1642 - Supercharged Coyote, 6 speed Auto
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05-07-2023, 07:10 PM
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CC Member
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Join Date: Oct 2022
Location: Perth Australia,
WA
Cobra Make, Engine: BDR 4.6 LTR 3V FRPP HOTROD CRATE ENGINE
Posts: 44
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Not Ranked
That sounds promising, the unit in the plastic tanks have a 5 bolt pattern as well
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05-08-2023, 11:32 AM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,453
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Looks like it should work. I would buy it, and then if it doesn't fit you can return it.
__________________
.boB "Iron Man"
NASA Rocky Mountain TTU #42
www.RacingtheExocet.com
BDR #1642 - Supercharged Coyote, 6 speed Auto
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05-09-2023, 07:02 AM
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CC Member
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Join Date: Oct 2022
Location: Perth Australia,
WA
Cobra Make, Engine: BDR 4.6 LTR 3V FRPP HOTROD CRATE ENGINE
Posts: 44
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Not Ranked
I will be getting one of those for sure, they're only available in the US so I will wait till I have decided on if I get a ali tank and new fuel pump, thanks again
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05-19-2023, 04:39 AM
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CC Member
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Join Date: Nov 2022
Location: Scottsdale,
AZ
Cobra Make, Engine: Superformance-Port fuel injected 427 stroker.
Posts: 78
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Not Ranked
Mine will be here this weekend.
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2003 SPF 351W/427 stroker with port fuel injection. Royal Blue and Polished 17's.
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07-07-2023, 08:31 AM
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CC Member
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Join Date: Jul 2012
Location: Rockaway Twsp,
NJ
Cobra Make, Engine: Backdraft - Coyote
Posts: 60
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Not Ranked
Bob, I see you have an access panel in the trunk floor to get to the pump. Mine doesn't. Did that come stock with the car, or did you retrofit it? Maybe the year of the vehicle has something to do with it? Mine is either a 2011 or 2012. Thanks.
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07-09-2023, 03:26 PM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,453
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The access panel was installed at the factory. My car is a 2016.
__________________
.boB "Iron Man"
NASA Rocky Mountain TTU #42
www.RacingtheExocet.com
BDR #1642 - Supercharged Coyote, 6 speed Auto
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03-14-2025, 08:14 PM
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CC Member
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Join Date: Mar 2025
Location: Gadsden,
AL
Cobra Make, Engine: Backdraft BDR RT4
Posts: 12
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Not Ranked
Resurrecting an old thread.
I'm hoping Bob will see this post and reply. I have a 2021 bdr rt4 with the bdr autometer type gauges. Once my fuel gauge gets close to around a half tank then for no reason it drops to empty, between full and half it seems to be fairly accurate.
So Bob how did this Holley lidar fuel tank sensor work out for you? Was it easy to calibrate etc etc?
Thanks in advance as I'm looking at replacing my fuel tank sender!
Todd
__________________
Backdraft BDR RT4 427 Number 2172
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03-16-2025, 10:35 AM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,453
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Yes, it is still working well. Initial programming was pretty easy, just follow the instructions.
After the initial install, I fiddled with the programming a bit to get it just where I wanted it.
Be sure to use thread sealer on the mounting bolts, or you will get a leak.
__________________
.boB "Iron Man"
NASA Rocky Mountain TTU #42
www.RacingtheExocet.com
BDR #1642 - Supercharged Coyote, 6 speed Auto
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03-16-2025, 12:55 PM
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CC Member
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Join Date: Mar 2025
Location: Gadsden,
AL
Cobra Make, Engine: Backdraft BDR RT4
Posts: 12
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Not Ranked
Quote:
Originally Posted by bobcowan
Yes, it is still working well. Initial programming was pretty easy, just follow the instructions.
After the initial install, I fiddled with the programming a bit to get it just where I wanted it.
Be sure to use thread sealer on the mounting bolts, or you will get a leak.
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Great and thank you for the reply Bob, I just ordered me one.
These forums are awesome.
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Backdraft BDR RT4 427 Number 2172
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