Fuel starvation, who else?

B1nks · 04-11-2010, 07:58 PM

Quote:

Originally Posted by travisjb

this is a big priority and I'm surprised we don't have a vendor stepping up yet... four options

1. traditional external swirl pot
2. 'internal swirl pot' that was discussed here a couple mos ago
3. internal baffling
4. complete fuel system replacement, ie fuel cell, new pumps lines, etc

Option 4 may be necessary for those doing real racing or TT setups . Option 3 should be the cheapest but no idea how effective this will be when the tank gets low. I'm planning to give this a try. Basically a coffee can with holes that surrounds the fuel pump in the tank and partially resists flow away from the pump in corners. Option 2 should be the effective but more expensive and would require some engineering specific to this car.

I have plans for TT, though a full build will take some time, so I hope my only option is #4 but for #1, would it fit in my spare tire area ? I don't plan on putting a sub in so that's a possibility. I wish #3 would work and the thing with the coffee can would it resist both ways really ? What I mean is, if it kept the fuel from flowing away from the pump wouldn't it also partially resist flow to the pump as well ?

PS: Thanks for the link Valentino !

travisjb · 04-11-2010, 09:44 PM

Quote:

Originally Posted by B1nks

...if it kept the fuel from flowing away from the pump wouldn't it also partially resist flow to the pump as well ?

yes, but the idea is that there are extended periods of time between lateral loading where it could fill back up... and you could also pattern the holes so that it resists flow out more than flow in... imagine the angle of the fuel in a hard right hand corner vs straight line braking / accel

pgrmstr · 04-12-2010, 10:21 AM

I think I experienced this for the first time this weekend at an autox. Oil temps were starting off at 220 before my run, but were 245 at the end of the run. I was getting some momentary "cut outs" mid way through the course and was thinking it was limp mode, but having read this post this morning, pretty sure I was getting fuel starvation. The point of cutout was at the turn around of the course, a sweeping uphill right hander...and it cut out on two separate runs in the same place. I was running about 1/2 tank of fuel so looks like people are getting starvation even between 1/2 and 3/4 so looks like I'll need to run 3/4 to full to be safe.

That's a fair amount of extra weight to have though...

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Fuel question	MYZ	Engine & Drivetrain	7	04-04-2020 03:22 PM
Fuel Economy...WTF?	spearfish25	Nissan 370Z General Discussions	28	07-08-2009 06:05 PM
Question about air/fuel	zZSportZz	Nissan 370Z General Discussions	9	06-15-2009 04:59 PM
370Z Fuel Gauge?!?!	Temple	Exterior & Interior	47	04-24-2009 05:07 PM
Fuel Release	FERRARI	Nissan 370Z General Discussions	3	02-13-2009 11:36 AM

04-12-2010, 10:21 AM	#3 (permalink)
pgrmstr Base Member Join Date: Mar 2009 Location: PA Posts: 131 Drives: 09 BS 370z Sport 6MT Rep Power: 18	I think I experienced this for the first time this weekend at an autox. Oil temps were starting off at 220 before my run, but were 245 at the end of the run. I was getting some momentary "cut outs" mid way through the course and was thinking it was limp mode, but having read this post this morning, pretty sure I was getting fuel starvation. The point of cutout was at the turn around of the course, a sweeping uphill right hander...and it cut out on two separate runs in the same place. I was running about 1/2 tank of fuel so looks like people are getting starvation even between 1/2 and 3/4 so looks like I'll need to run 3/4 to full to be safe. That's a fair amount of extra weight to have though...