fuel starvation

Rangerz · 09-10-2014, 09:54 PM

I think i am one of the 1 or 2 that had some issues Phunk spoke about. In hindsight i know i could get this done in 6 hrs or less. It is one if not the best mods you can do if you like the track or dodging cones.

Phunk helped me out via text or phone call on several occasions when i had my issues.

for the CJM RRP

Arrvaxx · 09-11-2014, 12:24 AM

Quote:

Originally Posted by Super Werty

how is it that DJTodd was able to run this track with all his power and E85 without running into this starvation issue?

is this strictly related to auto x events with super tight turns?

https://www.youtube.com/watch?v=kEEQIH0orFA

I had the issue on a track at 10 minutes/2 gallons on every right...both low speed and high. Had the issue on an autocross event with less but more of what I was expecting.

So far no one has told me my experience is abnormal on a track. :/

If anyone knows any pros please point them to this thread. I'd love to know how they deal with it because you can't tell me they race for 10 minutes then take on fuel and tires.

phunk · 09-11-2014, 02:13 AM

So far, the only other solution that has been applied is a custom fuel cell to eliminate the factory fuel tank.

Rangerz · 09-11-2014, 09:05 AM

Quote:

Originally Posted by Arrvaxx

I had the issue on a track at 10 minutes/2 gallons on every right...both low speed and high. Had the issue on an autocross event with less but more of what I was expecting.

So far no one has told me my experience is abnormal on a track. :/

If anyone knows any pros please point them to this thread. I'd love to know how they deal with it because you can't tell me they race for 10 minutes then take on fuel and tires.

I dont think what you are describing is anormal. For me if i started a session with anyrhing less than 2 dots from full i would fuel starve towards the end of the session. Track config plays a big part as well. I figured any right hander of .7 g or more was when i would get it. I would think this is compounded as far as how long it takes to start because of your setup. Your flowing fuel at a greater rate than i am.

My 2 cents...if i had invested 15 to 20k in FI i wouldnt blink a eye to solve fueling issues for another 1200 bucks and some of my time.

Arrvaxx · 09-11-2014, 09:13 AM

Thanks Rangerz. I agree and will. It's just that it wasn't on my radar. Now I have to decide to get my car reveal ready and miss early year track days or get it track ready and put off the reveal. Not sure I can swing both this winter after spending so much this year.

swiss370Z · 09-11-2014, 09:58 AM

We have a small track (test track) here in Switzerland.
New road surface and super grip Level

The yellow arrow shows the direction of travel

The red arrow indicates the point at which the "Z" starts to stutter (starvation)
(Full acceleration after the very long left curve (approximately 0.8 G-Force) and just before the braking point)

This happened to me even at half full tank
With a full tank no problem

I hope I could describe it properly

Greetings

JWillis72 · 09-11-2014, 04:09 PM

Quote:

Originally Posted by Super Werty

how is it that DJTodd was able to run this track with all his power and E85 without running into this starvation issue?

is this strictly related to auto x events with super tight turns?

https://www.youtube.com/watch?v=kEEQIH0orFA

No, Sebring turn 17 is a fast big bumpy U turn between the back and front straight that my Z is around 60 and if I don't have a full tank it hits me every time when I get in the gas. My friend was on my butt in a supercharged Z06 and its so bad he thought I jumped off the gas to brake check him without the lights. He was mad until I told him what it was.

Mitco39 · 09-11-2014, 04:22 PM

Man I wish we had tracks like that up here. I would spend soooo much time on it Id need a dedicated track car just to keep the miles down on my dailys. lol

JWillis72 · 09-11-2014, 04:37 PM

Quote:

Originally Posted by Mitco39

Man I wish we had tracks like that up here. I would spend soooo much time on it Id need a dedicated track car just to keep the miles down on my dailys. lol

Funny you say that, I just started looking for a new DD to keep the miles off my track car.

Mike · 09-11-2014, 10:54 PM

Quote:

Originally Posted by phunk

The Nissan dealer is not qualified to install this type of product! No way! Skilled performance shops only.

Not because the job is hard, but because a very high percentage of people who get jobs working on cars, have no business working on cars!

most shops aren't either, for the same reasons. best to do it slow yourself, and do it right.

09-10-2014, 09:54 PM	#31 (permalink)
Rangerz Enthusiast Member Join Date: Jun 2013 Location: Northern Utah Age: 59 Posts: 476 Drives: 2012 370 Nismo Rep Power: 12	I think i am one of the 1 or 2 that had some issues Phunk spoke about. In hindsight i know i could get this done in 6 hrs or less. It is one if not the best mods you can do if you like the track or dodging cones. Phunk helped me out via text or phone call on several occasions when i had my issues. for the CJM RRP phunk likes this. __________________ Stillen Gen III/ NST/ Fast Intentions Non-Res HFC & 12" Resonated CF TDX/ Setreb series 9 OC/ SPL upper control arms/ Whiteline front & rear swaybars/ Uprev tuned by Seb@specialtyZ/ 319HP 262TQ/ Z1 PS Cooler/ Z1 SS Premium break lines/ CJM Road Race pump/Carbotech F:XP10 R:XP8 Nismo OC DIY

09-11-2014, 02:13 AM	#33 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,668 Drives: 370 Rep Power: 974723	So far, the only other solution that has been applied is a custom fuel cell to eliminate the factory fuel tank. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph

09-11-2014, 09:13 AM	#35 (permalink)
Arrvaxx A True Z Fanatic Join Date: Jul 2013 Location: Whore Island, MN Posts: 1,243 Drives: 40th F.I. Twin Turbo Rep Power: 18	Thanks Rangerz. I agree and will. It's just that it wasn't on my radar. Now I have to decide to get my car reveal ready and miss early year track days or get it track ready and put off the reveal. Not sure I can swing both this winter after spending so much this year. Rangerz likes this. __________________ 2010 370Z 40th Anniversary (#480 born 1/19/2010) Fast Intentions Twin Turbo \| Varis Arising II \| Limited Edition Recaro Sportster \| Tuned by Specialty Z \| 604hp 525 torque @14lbs boost on 100 octane

09-11-2014, 04:22 PM	#38 (permalink)
Mitco39 A True Z Fanatic Join Date: Aug 2012 Location: Edmonton Alberta Canada Posts: 2,089 Drives: 40th 370z Rep Power: 132	Man I wish we had tracks like that up here. I would spend soooo much time on it Id need a dedicated track car just to keep the miles down on my dailys. lol __________________ 2007 Chevy Duramax - EFILive Tuned By Me 2010 40th W/ Nav - Boosted Performance - UpRev Tuned By Me The Mrs. Ride -2012 335XI N55 BMW - Cobb Tuned By Me, Built by her My Build --> http://www.the370z.com/members-370z-...39s-build.html

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