is there a fix to fuel starvation?

bleunetizen · 09-18-2014, 08:06 AM

I was reading a few posts in the past about this fuel starvation and thinking 'these guys must be running so low on fuel to save weight'.

apparently it is due to the shape of fuel tank and I cant believe nissan is doing nothing to fix this issue.

is there any fix to this? is there any baffle plate or something that can be easily added? searching doenst seem to get me a clear answer other than just saying 'add more fuel and forget'

JARblue · 09-18-2014, 08:13 AM

Phunk is a forum sponsor and has a product that is probably your best solution. You want the Road Race Fuel Pump in this link CJM 370z Fuel System Products: A Brief Overview.

Your only easy option is to keep the tank full. Yes, it is a terrible design by Nissan

1st · 09-18-2014, 10:54 AM

Is there a fix to fuel starvation? PUMP GAS!

JWillis72 · 09-18-2014, 11:02 AM

Mine will do it with 3/4 tank of gas on Sebring turn 17 and CJM is really the only proven option. I just ordered mine, I'm sick of filling up after every session.

bleunetizen · 09-18-2014, 08:37 PM

how disappointing, so its not something baffle or extending the fuel pickup to the center and etc can fix?

I wonder how it looks like inside the tank hmm

Rusty · 09-18-2014, 10:29 PM

Bunch of us here have phunks kit. It flat out works.

RBfastback · 09-18-2014, 10:48 PM

Quote:

Originally Posted by Rusty

Bunch of us here have phunks kit. It flat out works.

wow, it's $1,150
I didn't expect that when I clicked the link

Rusty · 09-18-2014, 11:31 PM

Only solution to the problem.

cossie1600 · 09-19-2014, 02:06 AM

You can also just throw these puppies into the gas tank. It should buy you a few more laps

http://www.ksrfoam.com/Gas_tank_foam_.php

1slow370 · 09-19-2014, 03:46 AM

Quote:

Originally Posted by cossie1600

You can also just throw these puppies into the gas tank. It should buy you a few more laps

Gas Tank Foam- Anti Slosh Foam- Fuel Tank Foam

just remember when trying to do something like this that there are two fuel level sender arms in the tank that will need to move and cannot be obstructed by foam.

JWillis72 · 09-19-2014, 06:43 AM

Quote:

Originally Posted by bleunetizen

how disappointing, so its not something baffle or extending the fuel pickup to the center and etc can fix?

I wonder how it looks like inside the tank hmm

The problem is the saddle shape, the center is the high point. I assume they did this to lower the center of gravity and didn't push the car hard enough to find the problem. Maybe the idiot that designed the cooling system also designed the gas tank.

phunk · 09-19-2014, 06:52 AM

Its actually a pretty typical over-all fuel tank shape found in many cars. The lack of baffles combined with the non-existent displacement of the fuel pump module surge canister, and the lethargic recovery of fuel via a return venturi is why the 370z suffers starvation worse than other vehicles.

I have posted several times recommending people to attempt putting some fuel cell foam in the center of the tank. Not sure why nobody wants to try it! It wont work as well as my road race pump, but it may or may not offer considerable improvement.

_ace_ · 11-11-2014, 11:52 AM

Quote:

Originally Posted by JWillis72

The problem is the saddle shape, the center is the high point. I assume they did this to lower the center of gravity and didn't push the car hard enough to find the problem. Maybe the idiot that designed the cooling system also designed the gas tank.

I completely agree and think it's pretty sad in both cases - I burst out laughing when I read this. Maybe he did the 6MT syncro too...

JWillis72 · 11-11-2014, 12:07 PM

Mine is fixed now, I picked the car up this morning with it's new CJM fuel system installed!

Spooler · 11-11-2014, 12:11 PM

(Head in Hands)...... This reminds me of Dodge. You have to fix the stupid stuff they did to be able to really enjoy the vehicle. Nissan has not been this bad in the past. I personally hate the no return fuel systems.

09-18-2014, 08:06 AM	#1 (permalink)
bleunetizen Base Member Join Date: Jan 2014 Location: NZ Posts: 138 Drives: BMW M6, 530i, 370z Rep Power: 11	is there a fix to fuel starvation? I was reading a few posts in the past about this fuel starvation and thinking 'these guys must be running so low on fuel to save weight'. apparently it is due to the shape of fuel tank and I cant believe nissan is doing nothing to fix this issue. is there any fix to this? is there any baffle plate or something that can be easily added? searching doenst seem to get me a clear answer other than just saying 'add more fuel and forget'

09-18-2014, 08:13 AM	#2 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,449 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	Phunk is a forum sponsor and has a product that is probably your best solution. You want the Road Race Fuel Pump in this link CJM 370z Fuel System Products: A Brief Overview. Your only easy option is to keep the tank full. Yes, it is a terrible design by Nissan __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

09-18-2014, 10:54 AM	#3 (permalink)
1st A True Z Fanatic Join Date: Jul 2012 Location: I 80 Biz U.S. 50 Posts: 1,708 Drives: Platinum Z Rep Power: 1615	Is there a fix to fuel starvation? PUMP GAS! Pie likes this.

09-18-2014, 11:02 AM	#4 (permalink)
JWillis72 A True Z Fanatic Join Date: Sep 2013 Location: Fort Myers FL Posts: 2,002 Drives: 2009 370Z yellow 7AT Rep Power: 44	Mine will do it with 3/4 tank of gas on Sebring turn 17 and CJM is really the only proven option. I just ordered mine, I'm sick of filling up after every session. TerribleONE and JARblue like this.

09-18-2014, 10:29 PM	#6 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 34,851 Drives: 2011 Nismo GM 6M Rep Power: 2684436	Bunch of us here have phunks kit. It flat out works. TerribleONE and Rangerz like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

09-18-2014, 08:37 PM	#5 (permalink)
bleunetizen Base Member Join Date: Jan 2014 Location: NZ Posts: 138 Drives: BMW M6, 530i, 370z Rep Power: 11	how disappointing, so its not something baffle or extending the fuel pickup to the center and etc can fix? I wonder how it looks like inside the tank hmm

09-18-2014, 11:31 PM	#8 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 34,851 Drives: 2011 Nismo GM 6M Rep Power: 2684436	Only solution to the problem. TerribleONE likes this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

09-19-2014, 02:06 AM	#9 (permalink)
cossie1600 A True Z Fanatic Join Date: Jun 2009 Location: californee way Posts: 5,380 Drives: 370, Leaf Rep Power: 29	You can also just throw these puppies into the gas tank. It should buy you a few more laps http://www.ksrfoam.com/Gas_tank_foam_.php

09-19-2014, 06:52 AM	#12 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,654 Drives: 370 Rep Power: 944523	Its actually a pretty typical over-all fuel tank shape found in many cars. The lack of baffles combined with the non-existent displacement of the fuel pump module surge canister, and the lethargic recovery of fuel via a return venturi is why the 370z suffers starvation worse than other vehicles. I have posted several times recommending people to attempt putting some fuel cell foam in the center of the tank. Not sure why nobody wants to try it! It wont work as well as my road race pump, but it may or may not offer considerable improvement. JWillis72 likes this. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph

11-11-2014, 12:07 PM	#14 (permalink)
JWillis72 A True Z Fanatic Join Date: Sep 2013 Location: Fort Myers FL Posts: 2,002 Drives: 2009 370Z yellow 7AT Rep Power: 44	Mine is fixed now, I picked the car up this morning with it's new CJM fuel system installed! phunk and Rusty like this.

11-11-2014, 12:11 PM	#15 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,504 Drives: 2013 Nismo 370z Rep Power: 2684391	(Head in Hands)...... This reminds me of Dodge. You have to fix the stupid stuff they did to be able to really enjoy the vehicle. Nissan has not been this bad in the past. I personally hate the no return fuel systems.

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