Fuel starvation, who else?

FL 4Motion

I'm of the philosophy of buy the best and buy once, so if you guys have a better design, then I'd rather wait and get that instead.

Kirkster

Just ran my car out of fuel on a long high G right hander. Had 3 dots then had the engine stutter and call it quits. Did not want to re-fire. I am guessing it vapor locked. Sitting on the side of the highway for 30 minutes waiting for the wife to bring me gas was not the most fun I have had in a while.

Keep us updated. I am definitely in for a solution.

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Powertrain Warranty voided on 5/14/2011
Mod List:GTM Supercharger,SmartTop module, Oil Cooler, GT-R Start button, Nismo Exhaust, BC Racing ER Coilovers, Backup Camara
For eastwest:

SPOHN

Yep I had this yesterday. My car was three dots past a 1/4 of a tank. I was going down hill a long right hander and had no throttle for about five seconds. Went around the next and the car shut off for about five mins before I could get it restarted. I just then limped it back. So sad.

I will buy this.

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Shamu

I had my first experience with fuel starve issues at lacuna Seca. Turn 4 and turn 10 caused the issue. I was about 6 gallons down from full tank.

I noticed www intengineering com has a universal surge tank pump. Anyone using that one?

Mike

Interesting enough for me, the only changes I have made are going from 275/35-18 Hankook R compounds to Hoosier 295/40-18s and raising the car 1/4", and at Road Atlanta, I went from getting it at 3 dots from full to 6 this weekend.

Whats up with that? I'm not driving any slower.

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NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z
Porsche: 93 968 / 23 Macan GTS / 93 968

Mike

some of the guys talked to the Nissan pro driver at Petit Lemans, and they are running a second fuel pump in the other side, I believe. I got there a little late for the details, but I do recall hearing it was a volvo pump or something.

Right now, since after today I am done until spring, I'm waiting to see CJs solution.

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NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z
Porsche: 93 968 / 23 Macan GTS / 93 968

travisjb

that's the setup i'm using... plus a 3rd fuel pump at rear of tank... plus baffling... like i've said before, it is good for getting down to ~6 gal

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2009 370Z #104
*For Sale*

travisjb

(lack of) accuracy of the fuel gauge would explain it

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2009 370Z #104
*For Sale*

Mike

speaking of which, I got these tires back in September, and they don't clear my control arms without spacers. I've been wondering for 2 months how they fit on your car and not mine, and I got your specs on my forgestars, then just yesterday I realized they aren't on my forgestars, just my 350z wheels! doh!

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NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z
Porsche: 93 968 / 23 Macan GTS / 93 968

takjak2

This is killing me at VIR

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phunk

If anything, I would say that may be a sign you are going faster. To "achieve" the problem at a higher tank level could be a sign that you are losing fuel to the drivers side of the tank worse due to a harder right turn, and the fuel system isnt recovering as quickly.

our solution not only uses the rather decent fuel surge can to prevent the engines fuel pump from momentarily starving, but it also adds another siphon to transfer fuel back to the pump side of the tank... and its quite a bit more powerful than the stock siphon... so with them both working together the recovery of the fuel to the pump side of the tank will be more than twice as quick.

the new design is like 95% done from last week. I just have to sort out this one bracket setup for installation and we are ready to build a test unit or two.

who is going to be racing continually that we can work out a testing deal with now since winter has shut down many of you guys until spring?

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SPOHN

Need some guys from FL (Travis). lol. I believe they still have track days year around down there.

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travisjb

I would offer up my car but it already has another system installed... and it'd be a good amount of work to pull the old system and test this one... e.g., my fuel tank has 'baffling' inside it now to control fluid movement, so any testing we do would not be 100% applicable to other cars

Also, when it emerges from jnaut's shop end of next week, we are already going to have a lot of changes (GTM St 2 SC) - so might be better to use a vehicle that is a bit more stock... e.g., SC changes the voltages to the fuel pump etc

If none of those are a concern and you want to work something out, I'm happy to talk. Should have 2-3 track events between now and end of Jan

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2009 370Z #104
*For Sale*

jr1

I'll be running pretty consistently in the upcoming months. Located in Norcal. Possibly running buttonwillow 12/11-12, will be driving T-hill early January. T-hill is definitely not the ideal track for testing this as there is only one turn where I consistently have starvation issues but Buttonwillow and the others around here should be good.

FL 4Motion

well crap, our car will be running at daytona this Fri and Sat, not enough heads up...