who here has gotten rid of the stock gas tank and uses a race cell? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

ca18det · 02-14-2003, 12:34 PM

just like the topic says. i am gonna be installing a 8 gal drag cell in the trunk. just owndering who has done this. where did you run your fuel lines? under the car or through the cabin? did you use hardlines at all or all earls ss lines? what an size did you run? i'm planning on -10 for feed and -6 for rturn with a aeromotive external fuel pump and filter and aeromotive or sard fpr. just wanting to know what everyone has done. thanks

kandyflip445 · 02-14-2003, 01:43 PM

Why are you putting a racing fuel cell in? When you do it make sure to do a write-up!

ca18det · 02-14-2003, 02:40 PM

why? well because i care about weight and i care about performance. i doubt the stock lines are gonna flow enough for the hp i am going for. i will for sure do a write up though.

tnord · 02-14-2003, 03:01 PM

considering you're going to raise and move back the weight of the fuel, you'll be doing more harm than good. and btw......a fuel cell has nothing to do with the ability to deliver fuel to the motor. please........don't get a fuel cell, you have no idea what you're dealing with.

*Jeff240sx* · 02-14-2003, 03:11 PM

The stock fuel lines have flowed enough for countless 450rwhp 240sx's, and enough for Duys old 650rwhp spraying 240sx.
I don't quite know what you're talking about, but I'm with Travis on this. Don't get a fuel cell. You'll open an entire can of worms that you don't wanna deal with.
Oh yea... If you care about weight... are you gonna remove the rear seat? If so, are you gonna weld a steel plate in the open area between the seat and trunk? If not, you won't be allowed to run on tracks, because without a divider, the cockpit / trunk will be one area, and flammable materials are not allowed to be in the same area. This includes nitrous bottles and fuel cells.
-Jeff

ca18det · 02-14-2003, 03:16 PM

um i'm sorry. i think i do know what i am dealing with. i have been building cars for 3 years. i just havent done a 240 yet. i am gonna take a guess and say the stock gas tank weighs around 30 lbs and holds 12 gal. now say each gal weighs 10 lbs thats 150 lbs for gas and tank. now take a 8 gal fuel cell that weighs 10 lbs and only holds 80 worth of liquid. thats a huge weigth saving plus i can run bigger lines to and from my motor. i will need that inda flow to support 550 hp without spraying. ye si have a fully built ca18 engine with a t04r turbo. on a 60-1 it dynoed 480ish on a stock head. i have since ported it al out and added tomei 270 cams to match and hks valve springs. the car is a full track and show car.
for mounting the cell in the trunk whats wrong with putting it in the spare tire aera. its still gonna be low enough and then you have the weigh savings. all i wanted to know was should i run the lines in teh cabin(which kinda scares me incase one burst) or under the car into the engine bay. thanks

*Jeff240sx* · 02-14-2003, 03:24 PM

OK. Seeing as you're dead set on this, the stock fuel lines run under the car, on the passenger side. See if you can't fab some brackets for larger fuel lines, and follow their lead.
Now.. back to your math.
Dunno how much the tank weighs, but they hold 17.2 gallons. And each gallon of gas is not 10 pounds. Gasoline has a specific gravity of .805, so each gallon weighs 6.44 pounds. That's 110.8 pounds of fuel in a full tank. So, you can spend the $600 that someone paid for a tank that perfectly fits into the spare tire well and save a little weight on the tank, or you can just get less gas in your tank.
-Jeff

tnord · 02-14-2003, 03:25 PM

before i say anything else.........is this car driven on the street at all?

ca18det · 02-14-2003, 03:46 PM

the car isnt a dialy driver anymore. however it wont stop me from driving to and from the track or toa show or to wrok for that matter.

yes i am concearned about weight. i have no ac no p/s p/w no carpet no back seat . its fully gutted. no factory wire looms. yes i had planned on welding in a plate for the back seat area. i was also thinking about running them under teh car for safety reasons. i just wanted to basically see if anyone else has done this or not. i'm am not trying to turn this into a flame war with anyone just trying to get some insight.

tnord · 02-14-2003, 03:57 PM

alright........if this is just a track car, forgive me for jumping to conclusions. i figured you were like 95% of the rest of the board, and were basically doing it for no reason at all. i assumed you were just gonna slap it in the trunk (not in the spare tire well) like a golf bag.

the only person i know of on the board that might have a fuel cell is bbp......you might want to pm him about it. if you're going to run non-OEM lines, i would definitely do it under the car.

greaser@work · 02-14-2003, 04:10 PM

Dont try and save too much weight. if you plan to compete in an import division of drag, the weight limit was raised this year to 2400lbs for rwd 4cyl.

you WILL have to build a "firewall" of some sort if the cell is inside the passenger compartment. and you will have to run that carpet upfront if you want to stay out of pro class.

ca18det · 02-14-2003, 04:43 PM

i wont be competing in any major events. i dont live by any big tracks. just going to the local tracks and car shows. i do it for teh fun of building a car and the satisfaction of completing a car. thanks for the advice on weight though and carpet, i didnt know you had to have front carpets and be over 2400 lbs.

greaser@work · 02-14-2003, 05:11 PM

just for competition you do. meaning the big events where the big dogs play.

on the test and tune nights they dont care, unless you are doing the street challenge type setups. but for test tune, they only thing they check for or kick you out for is not haveing a helmet, or not running a cage if you are 11.99 and faster.

91CRXsiR · 02-15-2003, 12:21 AM

stock tank 30 pds
12 gall? 120 pds

FULL TANK = 150 pds

race cell 10 pds.
8 gall ? 80 pds

FULL TANK = 90 pds

now... if you were to put oh i dont know 8 GALLONS of fuel in your STOCK TANk that would be

stock tank 30 pds
8 gall 80 pds

TANK = 110 Pds
so you only save 20 pds...

so ifs its only for weight reduction i would just eat less =).. save some cash something else

or you can do it anyways its ur car

ca18det · 02-15-2003, 07:48 AM

it isnt strictly for weights savings. i also want to run bigger fuel lines for safety. one may argue that yeah the stock lines were fine for 600 hp. well tahts great but whats from saying that it wil run even better with the bigger lines. its safety and when i build a car i touch all area's. i dont do anything half assed. not my style.

91CRXsiR · 02-15-2003, 07:21 PM

ahhh i see...

how much fuel do you need for a run? is this a track car? or drag car?..

ive read that drag cars are usually on empty when they goto the track and then they fill a 1/4 tank of race fuel

ca18det · 02-16-2003, 07:39 AM

this is not a full out track or drag car. it would never see a auto x course it will see the drag strip as well as a few car shows. i will prolly drive it to work on occasion to. its just a hobby to build cars. it keeps me sane with all the drama in my life.

02-14-2003, 12:34 PM	#1
ca18det Leaky Injector Join Date: Dec 2002 Location: under my car Posts: 110 Trader Rating: (0) Feedback Score: 0 reviews	who here has gotten rid of the stock gas tank and uses a race cell? just like the topic says. i am gonna be installing a 8 gal drag cell in the trunk. just owndering who has done this. where did you run your fuel lines? under the car or through the cabin? did you use hardlines at all or all earls ss lines? what an size did you run? i'm planning on -10 for feed and -6 for rturn with a aeromotive external fuel pump and filter and aeromotive or sard fpr. just wanting to know what everyone has done. thanks

02-14-2003, 03:11 PM	#5
Jeff240sx I hate you too... Join Date: Jul 2001 Location: Tampa, FL Age: 42 Posts: 5,828 Trader Rating: (0) Rides Gallery: Jeff240sx Feedback Score: 0 reviews	The stock fuel lines have flowed enough for countless 450rwhp 240sx's, and enough for Duys old 650rwhp spraying 240sx. I don't quite know what you're talking about, but I'm with Travis on this. Don't get a fuel cell. You'll open an entire can of worms that you don't wanna deal with. Oh yea... If you care about weight... are you gonna remove the rear seat? If so, are you gonna weld a steel plate in the open area between the seat and trunk? If not, you won't be allowed to run on tracks, because without a divider, the cockpit / trunk will be one area, and flammable materials are not allowed to be in the same area. This includes nitrous bottles and fuel cells. -Jeff __________________ Whatup?

02-14-2003, 03:24 PM	#7
Jeff240sx I hate you too... Join Date: Jul 2001 Location: Tampa, FL Age: 42 Posts: 5,828 Trader Rating: (0) Rides Gallery: Jeff240sx Feedback Score: 0 reviews	OK. Seeing as you're dead set on this, the stock fuel lines run under the car, on the passenger side. See if you can't fab some brackets for larger fuel lines, and follow their lead. Now.. back to your math. Dunno how much the tank weighs, but they hold 17.2 gallons. And each gallon of gas is not 10 pounds. Gasoline has a specific gravity of .805, so each gallon weighs 6.44 pounds. That's 110.8 pounds of fuel in a full tank. So, you can spend the $600 that someone paid for a tank that perfectly fits into the spare tire well and save a little weight on the tank, or you can just get less gas in your tank. -Jeff __________________ Whatup?

02-14-2003, 01:43 PM	#2
kandyflip445 Post Whore! Join Date: Sep 2002 Location: Arden, NC Age: 40 Posts: 4,460 Trader Rating: (1) Rides Gallery: kandyflip445 Feedback Score: 1 reviews	Why are you putting a racing fuel cell in? When you do it make sure to do a write-up!

02-14-2003, 02:40 PM	#3
ca18det Leaky Injector Join Date: Dec 2002 Location: under my car Posts: 110 Trader Rating: (0) Feedback Score: 0 reviews	why? well because i care about weight and i care about performance. i doubt the stock lines are gonna flow enough for the hp i am going for. i will for sure do a write up though.

02-14-2003, 03:01 PM	#4
tnord Nissanaholic! Join Date: Dec 2001 Posts: 1,975 Trader Rating: (0) Feedback Score: 0 reviews	considering you're going to raise and move back the weight of the fuel, you'll be doing more harm than good. and btw......a fuel cell has nothing to do with the ability to deliver fuel to the motor. please........don't get a fuel cell, you have no idea what you're dealing with.

02-14-2003, 03:16 PM	#6
ca18det Leaky Injector Join Date: Dec 2002 Location: under my car Posts: 110 Trader Rating: (0) Feedback Score: 0 reviews	um i'm sorry. i think i do know what i am dealing with. i have been building cars for 3 years. i just havent done a 240 yet. i am gonna take a guess and say the stock gas tank weighs around 30 lbs and holds 12 gal. now say each gal weighs 10 lbs thats 150 lbs for gas and tank. now take a 8 gal fuel cell that weighs 10 lbs and only holds 80 worth of liquid. thats a huge weigth saving plus i can run bigger lines to and from my motor. i will need that inda flow to support 550 hp without spraying. ye si have a fully built ca18 engine with a t04r turbo. on a 60-1 it dynoed 480ish on a stock head. i have since ported it al out and added tomei 270 cams to match and hks valve springs. the car is a full track and show car. for mounting the cell in the trunk whats wrong with putting it in the spare tire aera. its still gonna be low enough and then you have the weigh savings. all i wanted to know was should i run the lines in teh cabin(which kinda scares me incase one burst) or under the car into the engine bay. thanks

02-14-2003, 03:25 PM	#8
tnord Nissanaholic! Join Date: Dec 2001 Posts: 1,975 Trader Rating: (0) Feedback Score: 0 reviews	before i say anything else.........is this car driven on the street at all?

02-14-2003, 03:46 PM	#9
ca18det Leaky Injector Join Date: Dec 2002 Location: under my car Posts: 110 Trader Rating: (0) Feedback Score: 0 reviews	the car isnt a dialy driver anymore. however it wont stop me from driving to and from the track or toa show or to wrok for that matter. yes i am concearned about weight. i have no ac no p/s p/w no carpet no back seat . its fully gutted. no factory wire looms. yes i had planned on welding in a plate for the back seat area. i was also thinking about running them under teh car for safety reasons. i just wanted to basically see if anyone else has done this or not. i'm am not trying to turn this into a flame war with anyone just trying to get some insight.

02-14-2003, 03:57 PM	#10
tnord Nissanaholic! Join Date: Dec 2001 Posts: 1,975 Trader Rating: (0) Feedback Score: 0 reviews	alright........if this is just a track car, forgive me for jumping to conclusions. i figured you were like 95% of the rest of the board, and were basically doing it for no reason at all. i assumed you were just gonna slap it in the trunk (not in the spare tire well) like a golf bag. the only person i know of on the board that might have a fuel cell is bbp......you might want to pm him about it. if you're going to run non-OEM lines, i would definitely do it under the car.

02-14-2003, 04:10 PM	#11
greaser@work Join Date: Jan 2003 Location: chesapeake VA Posts: 46 Trader Rating: (0) Feedback Score: 0 reviews	Dont try and save too much weight. if you plan to compete in an import division of drag, the weight limit was raised this year to 2400lbs for rwd 4cyl. you WILL have to build a "firewall" of some sort if the cell is inside the passenger compartment. and you will have to run that carpet upfront if you want to stay out of pro class.

02-14-2003, 04:43 PM	#12
ca18det Leaky Injector Join Date: Dec 2002 Location: under my car Posts: 110 Trader Rating: (0) Feedback Score: 0 reviews	i wont be competing in any major events. i dont live by any big tracks. just going to the local tracks and car shows. i do it for teh fun of building a car and the satisfaction of completing a car. thanks for the advice on weight though and carpet, i didnt know you had to have front carpets and be over 2400 lbs.

02-14-2003, 05:11 PM	#13
greaser@work Join Date: Jan 2003 Location: chesapeake VA Posts: 46 Trader Rating: (0) Feedback Score: 0 reviews	just for competition you do. meaning the big events where the big dogs play. on the test and tune nights they dont care, unless you are doing the street challenge type setups. but for test tune, they only thing they check for or kick you out for is not haveing a helmet, or not running a cage if you are 11.99 and faster.

02-15-2003, 12:21 AM	#14
91CRXsiR Nissanaholic! Join Date: Oct 2001 Location: City of Industry, CA [626] Age: 42 Posts: 2,092 Trader Rating: (1) Feedback Score: 1 reviews	stock tank 30 pds 12 gall? 120 pds FULL TANK = 150 pds race cell 10 pds. 8 gall ? 80 pds FULL TANK = 90 pds now... if you were to put oh i dont know 8 GALLONS of fuel in your STOCK TANk that would be stock tank 30 pds 8 gall 80 pds TANK = 110 Pds so you only save 20 pds... so ifs its only for weight reduction i would just eat less =).. save some cash something else or you can do it anyways its ur car

02-15-2003, 07:48 AM	#15
ca18det Leaky Injector Join Date: Dec 2002 Location: under my car Posts: 110 Trader Rating: (0) Feedback Score: 0 reviews	it isnt strictly for weights savings. i also want to run bigger fuel lines for safety. one may argue that yeah the stock lines were fine for 600 hp. well tahts great but whats from saying that it wil run even better with the bigger lines. its safety and when i build a car i touch all area's. i dont do anything half assed. not my style.

02-15-2003, 07:21 PM	#16
91CRXsiR Nissanaholic! Join Date: Oct 2001 Location: City of Industry, CA [626] Age: 42 Posts: 2,092 Trader Rating: (1) Feedback Score: 1 reviews	ahhh i see... how much fuel do you need for a run? is this a track car? or drag car?.. ive read that drag cars are usually on empty when they goto the track and then they fill a 1/4 tank of race fuel

02-16-2003, 07:39 AM	#17
ca18det Leaky Injector Join Date: Dec 2002 Location: under my car Posts: 110 Trader Rating: (0) Feedback Score: 0 reviews	this is not a full out track or drag car. it would never see a auto x course it will see the drag strip as well as a few car shows. i will prolly drive it to work on occasion to. its just a hobby to build cars. it keeps me sane with all the drama in my life.