Inaccurate fuel gauge almost leaves me stranded!

phunk · 06-11-2014, 02:44 PM

Well... a standard dual pump wouldnt help but our road race pump solves it completely!

There are currently no real easy fixes for it. I have suggested trying some fuel cell foam tucked into the bridge across the fuel tank. It could possibly reduce sloshing a lot. Might have a side effect of making it annoying to fill the tank, but I doubt it. We will see if anyone ever tries it.

1slow370 · 06-11-2014, 03:06 PM

Quote:

Originally Posted by Nixlimited

So basically we have to go dual pump or not turn right on the track?

Or if you are return style already you could just put in a surge tank.

Edit: gives you a good excuse to put one of these fuckers in there SWEET BABY JEEZUZ

phunk · 06-11-2014, 03:19 PM

depends on how you feel about having a container of fuel pressurized to 50+psi inside the car. ive never been a fan, which is why I made the RRP. By putting it inside the fuel tank, it is able to function effectively without building up internal pressure. external surge cans which overflow to venturi's will inherently pressurize, for if they do not, the venturi's will not work, and you will fuel starve regardless of the surge can, as the surge can itself would be starved of fuel when the in-tank module isnt sending it anything.

In other applications, the run-of-the-mill external surge can like the radium is the go-to solution. In cars with return venturi's, theres a little more thought to put into it.

RonRizz · 06-11-2014, 03:22 PM

Quote:

Originally Posted by bmarcinczyk14

I've had some issues earlier in the spring putting gas into the tank, after 1 click-off from the gas pump I usually always turn it back on till the second click to top it off. Earlier in the spring when I tried doing the the gas overflowed outta the tank onto my bumper, after only one extra fill after the fist click! I never had that problem before and it shouldn't do that after one click, I'm thinking maybe this has something to do with the fuel gauge issue.

I'm failing to see what overflowing your tank on fill-up has to do with your gauge?? Did I read that wrong?

1slow370 · 06-11-2014, 03:35 PM

Quote:

Originally Posted by phunk

depends on how you feel about having a container of fuel pressurized to 50+psi inside the car. ive never been a fan, which is why I made the RRP. By putting it inside the fuel tank, it is able to function effectively without building up internal pressure. external surge cans which overflow to venturi's will inherently pressurize, for if they do not, the venturi's will not work, and you will fuel starve regardless of the surge can, as the surge can itself would be starved of fuel when the in-tank module isnt sending it anything.

In other applications, the run-of-the-mill external surge can like the radium is the go-to solution. In cars with return venturi's, theres a little more thought to put into it.

Which is why you could use a quality can like the radium one and not worry about putting it under 10-20 psi of pressure(at worst), then mount it up front or under the car, you also don't have to worry about getting 40-50 lacerations trying to run 10 feet of line across the inside of the factory tank and bending baffles out of the way by hand. Gas hurts like hell when you get it in a cut.

A 255lph in the factory unit with the regulator replaced with a straight through fitting, with a 90 degree bulkhead on the top to feed the venturii's with no regulator to restrict it and then do an easy return setup up front like ur stage 0 or just a set of rails with new lines, return and supply from the factory pump to the radium unit, and then from the radium's supply and regulator to the rails or line adapter. it isn't hard at all and like i said if your worried about it just mount it under the car or in the front like most external surge cans are anyway

1slow370 · 06-11-2014, 03:57 PM

Or if you are just a badass you could go with the cheaper TRIPLE surge tank, get an external regulator, a 340 in the factory pump to lift to the surge tank, and then you could even put a 190lph in one spot of the surge tank and route that back to the factory unit to specifically power the venturii's so the surge tank could have a non pressure dump return line into the top of the factory pump, and then you could have 2x 455lph e85 pump in the surge tank and feed your 2500hp badazz motor.

phunk · 06-11-2014, 03:58 PM

Quote:

Originally Posted by 1slow370

Which is why you could use a quality can like the radium one and not worry about putting it under 10-20 psi of pressure(at worst), then mount it up front or under the car, you also don't have to worry about getting 40-50 lacerations trying to run 10 feet of line across the inside of the factory tank and bending baffles out of the way by hand. Gas hurts like hell when you get it in a cut.

A 255lph in the factory unit with the regulator replaced with a straight through fitting, with a 90 degree bulkhead on the top to feed the venturii's with no regulator to restrict it and then do an easy return setup up front like ur stage 0 or just a set of rails with new lines, return and supply from the factory pump to the radium unit, and then from the radium's supply and regulator to the rails or line adapter. it isn't hard at all and like i said if your worried about it just mount it under the car or in the front like most external surge cans are anyway

I personally dont want any pressurized container of fuel.

10-20 psi is not accurate. The return/venturi pressure in cars with upgraded fuel pumps is up to and over 50 psi.

For installing the RRP, there is just a couple of inches at the end of a baffle to bend. Big deal? If you are afraid of getting some little cuts on your hands, either cover the sharp edges, or dont work on cars.

I dont need a lesson from you on installing a generic surge can, its a practice that out-dates me. There are reasons you dont see them applied to these cars, ever... because the 350z crowd went through it, and its a delicate balance with its own inherit problems.

You can attack my product if you choose, by shedding tears over the installation... but it is far greater solution that has proven to eliminate the problem to the highest degree of success and has yet to show a single negative side effect or issue after installation

I am not trying to sell it anyway. If you want to do an external surge can in your 370z... be my guest... I will be here to take your calls to figure out how to solve all the problems with it like I do for the 350z guys that jump on it.

phunk · 06-11-2014, 04:01 PM

Quote:

Originally Posted by 1slow370

Or if you are just a badass you could go with the cheaper TRIPLE surge tank, get an external regulator, a 340 in the factory pump to lift to the surge tank, and then you could even put a 190lph in one spot of the surge tank and route that back to the factory unit to specifically power the venturii's so the surge tank could have a non pressure dump return line into the top of the factory pump, and then you could have 2x 455lph e85 pump in the surge tank and feed your 2500hp badazz motor.

Coulda shoulda woulda! Build it and they will come.

1slow370 · 06-11-2014, 04:22 PM

Quote:

Originally Posted by phunk

Coulda shoulda woulda! Build it and they will come.

I wasn't trying to teach you I'm just throwing it out there for others so we can have a few more options. After the drysump, manifold, exauhast, all poly mounts, suspension, radiator, oil lines and coolers, ati damper, wheels and tires, twin plate clutch and race hydraulics, and getting some body damage and a bit of interior fixed I'm going to be tapped out for mods for a good long while and this will be next on the list. Waiting to get the car's tune dialed in yet now after the 3" intakes and twin 70mm throttles, I've got an easy 15-20k in it and another 5k on the short list, and then fuel fix, and arms, and cage, and cams, and better headers, and retune again on e85, and upgrade the brakes again, and getting the race aero installed, it will be a year before I put together one of these for myself. The car is getting setup for max NA power on the factory bottom end, I don't want to say 400 but wen I got past 335 on a factory engine with a dry sump and exhaust we'll see what happens.

phunk · 06-11-2014, 04:29 PM

In a car with a build like that, I would probably consider handling an external surge can configuration as well. I just feel that the laundry list in your post with the 3 pumps in a surge can would actually work fine pending some details... but that its out of place in the average Z street car project. Its a layout description that displays you are able to think-around problems and solve it yourself, which is

, I just think that by the time someone put that in a viable "kit" it would be equally or more expensive than the way I did it, and a bit more external race-car style clutter versus my efforts to contain it all within the fuel tank... which admittedly contributes to its own downsides of annoying installation and serviceability, a common attribute of street cars.

1slow370 · 06-11-2014, 04:57 PM

Yeah I am dying because I can't post pictures or details until the parts are ready for sale as it is all one-off prototype work at this time.

phunk · 06-11-2014, 05:04 PM

dailey engineering or a new dry sump?

1slow370 · 06-11-2014, 05:24 PM

new. Had to lose the ac for the pump. It's a traditional style with lines instead of being attached to the pan so i could always relocate it, but because there are lines i can get different pumps and add or delete stages in the future. right now its a 4 stage running 11in/Hg vacuum with all peterson gear and the new R4 pump which is supposed to have less hp draw than the daileys. 2.5 gallon oil capacity, wix racing oil filter, lightweight lines, all the good ****.

Edit: when it was first put on it was running 22in/hg until they turned down the regulator to 11in/hg, so I might run more vacuum in the future for a bit more power as well. Then when the slugs wear out go with light weight rods and pistons, with low tension rings and pull out another 5%

Also thats the last little teaser I'm posting don't want to get in trouble haha

Nixlimited · 06-11-2014, 08:55 PM

Where does blowby go in a dry sump?

1slow370 · 06-12-2014, 11:03 AM

It gets sucked out with the oil, seperated in the tank, and vented through the vent can

Sent from my HTCONE using Tapatalk

06-11-2014, 02:44 PM	#16 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,655 Drives: 370 Rep Power: 944523	Well... a standard dual pump wouldnt help but our road race pump solves it completely! There are currently no real easy fixes for it. I have suggested trying some fuel cell foam tucked into the bridge across the fuel tank. It could possibly reduce sloshing a lot. Might have a side effect of making it annoying to fill the tank, but I doubt it. We will see if anyone ever tries it. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph

06-11-2014, 03:19 PM	#18 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,655 Drives: 370 Rep Power: 944523	depends on how you feel about having a container of fuel pressurized to 50+psi inside the car. ive never been a fan, which is why I made the RRP. By putting it inside the fuel tank, it is able to function effectively without building up internal pressure. external surge cans which overflow to venturi's will inherently pressurize, for if they do not, the venturi's will not work, and you will fuel starve regardless of the surge can, as the surge can itself would be starved of fuel when the in-tank module isnt sending it anything. In other applications, the run-of-the-mill external surge can like the radium is the go-to solution. In cars with return venturi's, theres a little more thought to put into it. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph Last edited by phunk; 06-11-2014 at 03:24 PM.

06-11-2014, 03:57 PM	#21 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7250	Or if you are just a badass you could go with the cheaper TRIPLE surge tank, get an external regulator, a 340 in the factory pump to lift to the surge tank, and then you could even put a 190lph in one spot of the surge tank and route that back to the factory unit to specifically power the venturii's so the surge tank could have a non pressure dump return line into the top of the factory pump, and then you could have 2x 455lph e85 pump in the surge tank and feed your 2500hp badazz motor. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

06-11-2014, 04:29 PM	#25 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,655 Drives: 370 Rep Power: 944523	In a car with a build like that, I would probably consider handling an external surge can configuration as well. I just feel that the laundry list in your post with the 3 pumps in a surge can would actually work fine pending some details... but that its out of place in the average Z street car project. Its a layout description that displays you are able to think-around problems and solve it yourself, which is , I just think that by the time someone put that in a viable "kit" it would be equally or more expensive than the way I did it, and a bit more external race-car style clutter versus my efforts to contain it all within the fuel tank... which admittedly contributes to its own downsides of annoying installation and serviceability, a common attribute of street cars. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph

06-11-2014, 04:57 PM	#26 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7250	Yeah I am dying because I can't post pictures or details until the parts are ready for sale as it is all one-off prototype work at this time. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

06-11-2014, 05:04 PM	#27 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,655 Drives: 370 Rep Power: 944523	dailey engineering or a new dry sump? __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph

06-11-2014, 05:24 PM	#28 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7250	new. Had to lose the ac for the pump. It's a traditional style with lines instead of being attached to the pan so i could always relocate it, but because there are lines i can get different pumps and add or delete stages in the future. right now its a 4 stage running 11in/Hg vacuum with all peterson gear and the new R4 pump which is supposed to have less hp draw than the daileys. 2.5 gallon oil capacity, wix racing oil filter, lightweight lines, all the good **. Edit: when it was first put on it was running 22in/hg until they turned down the regulator to 11in/hg, so I might run more vacuum in the future for a bit more power as well. Then when the slugs wear out go with light weight rods and pistons, with low tension rings and pull out another 5% Also thats the last little teaser I'm posting don't want to get in trouble haha __________________ ANSWER PRICE LIST** Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50 Last edited by 1slow370; 06-11-2014 at 05:30 PM.

06-11-2014, 08:55 PM	#29 (permalink)
Nixlimited A True Z Fanatic Join Date: Aug 2009 Location: San Diego Posts: 1,235 Drives: 15 GT-R / 11 Prius Rep Power: 25	Where does blowby go in a dry sump? __________________ Car Sold! Pleasure being a part of the Z community. New ride: 2015 GT-R - 647 WHP / 641 WTQ (e85) & 543 WHP / 519 WTQ (91)

06-12-2014, 11:03 AM	#30 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7250	It gets sucked out with the oil, seperated in the tank, and vented through the vent can Sent from my HTCONE using Tapatalk __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Stranded on the freeway twice in one month (fuel starvation)	houkouonchi	Nissan 370Z General Discussions	54	05-07-2013 04:03 PM
Fuel Gauge	jackbelot	Nissan 370Z Warranty / Scheduled Maintenance / Servicing / Repairs	2	07-26-2012 09:30 AM
Anyone have a Fuel Gauge Issue?	Z_you_Later	Nissan 370Z General Discussions	65	04-28-2012 02:45 PM
Fuel Gauge	MrZ	Nissan 370Z Warranty / Scheduled Maintenance / Servicing / Repairs	7	01-13-2012 03:12 PM
Fuel gauge... HELP!	VancouverZ34	Exterior & Interior	9	07-04-2010 04:46 AM