Fuel Starvation Control Product

phunk

Also... Just because I'm curious.. How many gallons would it take to fill it up when you would stop due to starvation previously?

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omm370z

me likes

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cdoxp800

Mine is about three Dots from full. How soon till others can get theres? I cannot even make it a 20 min session before fuel starve.

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2011 Brilliant Silver NISMO 370z. #: 0046.
PPE LTH | MillSpec Cats | F.I Exhaust | Akuma Intakes | Rotora 6/4 Brakes

clintfocus

bumping this

phunk

So far, everything I have is in this thread. I will have it up on the website sometime this week I believe, as I am working on a lot of cleanup and organization there. I have intentionally left out detailed descriptions but I can give you guys a little more information.

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phunk

They are technically available for shipment. There is a minor annoyance I still have to fix, and the instructions are are still crap.

Now that I have some really solid results to work with, its easier for me to feel driven to tie up the loose ends and call this project complete.

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SPOHN

Super thanks for all your hard work Charles. Been a long road and defiantly mod of the year or the hole generation of the Z34.

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phunk

Thanks for the kind words.... But I owed it to you! You and Mike did me a favor by electing to be the first paying customers to try out this product and risk kinks, so I thank you guys as well! It's looks like this is unfolding to be what you guys needed and what I wanted to build.

Now I am anxious to see how it performs in some of the other configurations it was built to support.

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Mike

Not sure if I could feel the lower weight as it got emptier or not, I did get faster as the day progressed, but thats normal when I haven't been on track in a while.

It used to vary where fuel starvation happened, as low as one dot from full exiting the carousel at Road America at worst, but for the most part, I would put in between 4 and 5 gallons after every session.

Thanks again for an awesome product!

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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

I just looked at the owners manual. Its a 19 gallon tank, but yeah, it was pretty empty! I actually thought it was 21.

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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

phunk

There was one day that I literally coasted up to the E85 pump, engine dead, out of gas. I barely had to use the brakes to stop the car and I wouldnt have been able to make it another 20 feet to a gas pump without pushing it. The car took just over 19 gallons to fill it.... so we know for sure that the product is working, well, flawlessly, to let Mike get down to an essentially empty gas tank. I cant say that its working beyond my expectations, but I try to not get too confident in unproven things until judgement day. Ive spent a lot of years specializing in fuel system design and was able to apply a lot of ideas to this product.

To run this setup with a single walbro 255 in an all motor road racing car is still the easiest test for this product. The real tests for it have yet to come... A twin turbo or supercharged car, coupled with the fuel demands of E85 running over 500rwhp on the road course is going to tax the system to its maximum potential, even beyond a 1000hp drag car going straight. To make it even harder, we could run a single Aeromotive 340lph pump in there, rather than the special Walbro 255 that is in it right now (which has a built in siphon to supply additional fuel to the can from the drivers side and increase overflow volume to aid the stock pump). If it can perform as well in that environment as it did for Mike today... I will have to just give myself a pat on the back!!

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phunk

I am at the shop today and did some examination into the issue that Mike and Spohn have run into so far. They have had a problem where when they fill the tank, the level float is getting snagged on something and stops a couple dots from full tank, and then begins to read properly once the fuel level lowers and catches up to the float.

I double checked the new location of the level float to verify that the spot we put it in allows it full swing. There is a baffle in the tank that has to be bent out of the way for this new location. I verified today that with the baffle bent out of the way, the level sensor float has full travel as its intended, and is at the proper height.

So where we went wrong on this... is that I failed to adequately describe the modification required to the baffle in order to allow full swing of the float arm with out product. Unfortunately to resolve the situation will require them to go back into the gas tank again to make an adjustment.

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phunk

I have attached a few photos to illustrate. The 2 photos showing the stock mounting (white hanger) with the level float at the max up position (notice the swing arm hitting the stop).

Also then 2 photos showing it with the new setup (disregard the beat up nature of the product, its a mock up and machine program test unit.. this crummy one will go in my own car). Notice that without the bending of the baffle that the float would hit it.

Attached Images

	new1.JPG (77.4 KB, 78 views)
	new2.JPG (85.9 KB, 68 views)
	stock1.JPG (101.0 KB, 58 views)
	stock2.JPG (85.3 KB, 69 views)

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Mike

Yep, the picture in the initial instructions looked like only the lower corner of the baffle should have been bent.

Thats what guinea pigs are for though, so we can figure out where instructions are lacking or product can be improved so when its finally released, noone else has any issues.

This kit is extremely high quality and almost a work of art. Its a shame its concealed in the gas tank.

As for me and the fuel level float hitting, its not a big deal because its just at the top of the range and because racecar. The lower range works fine, and thats all that really matters, so I'll leave mine as is.

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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

SPOHN

Well said Mike.

It is a work of art.

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