03-04 Cobra tank in a GT -can I do this myself?

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TonyG

Founding Member

Apr 12, 2002

200

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17

Owings Mills, MD

Oct 30, 2007

#1

• Oct 30, 2007

• #1

I'm bogging off my launch at the track (fuel sloshing around) unless I have a 1/2 tank or more. So I decided to buy a baffled 03-04 cobra tank, as well as all the evap parts.

I never dropped a fuel tank before, or installed/messed around with fuel pumps. I have dual focus pumps in there now. Is this something I can do all by myself in my driveway? Any special tools I need?

Also, is there any way this'll screw up my tunes that I have on there now?

 

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2002BLGT

Well-Known Member

Dec 18, 2003

2,945

4

59

Bedford VA

Oct 30, 2007

#2

• Oct 30, 2007

• #2

you might want to get a friend to help , especially if your tank is not almost empty , they can get heavy and ackward , you can do it yourself , but def. easier with a extra couple hands .....

 

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Scorcher2005

Member

Apr 17, 2004

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16

South Carolina

Oct 30, 2007

#3

• Oct 30, 2007

• #3

Dont know about the 4.6 tanks, but i dropped my 5.0 tank myself. Granted it was almost empty.

 

SaleenGT2001

Well-Known Member

Jul 18, 2005

2,811

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58

Four Oaks NC

Oct 30, 2007

#4

• Oct 30, 2007

• #4

cobra tank swap is VERY easy. you will need to extend one evap line. other than that it is a breeze. i did it by myself in about an hour.

 

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TonyG

Founding Member

Apr 12, 2002

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17

Owings Mills, MD

Oct 30, 2007

#5

• Oct 30, 2007

• #5

I found this write up

http://www.moddedmustangs.com/2003-2...pump-swap.html

I'll try to follow it. Hopefully he didn't leave anything out.

But one thing different is that I have dual focus pumps. Are there any special modifications that have to be made to the Cobra tank to accomodate them?

 

BennyBlown2v

New Member

Dec 9, 2004

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Carmel, INdiana

Oct 30, 2007

#6

• Oct 30, 2007

• #6

TonyG said:

I found this write up

http://www.moddedmustangs.com/2003-2...pump-swap.html

I'll try to follow it. Hopefully he didn't leave anything out.

But one thing different is that I have dual focus pumps. Are there any special modifications that have to be made to the Cobra tank to accomodate them?

Click to expand...

Nope, just use the two pumps in place of the stock two!

Dropping/swaping the tank is really, really easy, I've had my GT tank completely off before, put it back easily. Take 2-3hrs outa yer day if you really feel apprehensive about it, but its pretty straight forward.

 

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TonyG

Founding Member

Apr 12, 2002

200

0

17

Owings Mills, MD

Oct 31, 2007

#7

• Oct 31, 2007

• #7

Thanks for the encouragement.

I think I'm going to try doing it myself.

 

SaleenGT2001

Well-Known Member

Jul 18, 2005

2,811

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58

Four Oaks NC

Nov 2, 2007

#8

• Nov 2, 2007

• #8

you wont have any problems with it

 

hotmustang331

Active Member

Apr 29, 2004

2,967

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48

Bastrop,TX

Nov 2, 2007

#9

• Nov 2, 2007

• #9

Ill be doing mine this next week as well. And yes pulling the tank is pretty easy...iv just never had it totally out. Careful with the evap system though.

 

SaleenGT2001

Well-Known Member

Jul 18, 2005

2,811

4

58

Four Oaks NC

Nov 3, 2007

#10

• Nov 3, 2007

• #10

forget the evap system. just have all the codes turned off when it gets tuned.

i love being able to turn off CEL codes!!!

 

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TonyG

Founding Member

Apr 12, 2002

200

0

17

Owings Mills, MD

Nov 3, 2007

#11

• Nov 3, 2007

• #11

Well, I got it done.

I got stuck trying to disconnect the fuel line connection at the hat. It wouldn't budge so I disconnected it at the fuel filter, and left it connected at the hat. That part was a PITA.

Next, I got stuck on the new evap assembly. On the new assembly I bought, there's an electrical connector, which didn't mate up with the one coming off the car. Also, one of the vent hoses was positioned differently from the old evap unit, and wouldn't reach where it was suppose to go. So I had to use some parts from the old evap unit to get the job done.

When I was done, I put in < 1/4 and drove around. With my old tank, if I had less than 1/4 tank, I'd bog down momentarily when taking turns. But now that's a thing of the past. It felt good taking a turn, and that familar studder is now gone.

This mod will ultimately save $$$ since I no longer have to fill up with 3/4 tank of race fuel at the track. 1/3 tank will probably do.

 

hotmustang331

Active Member

Apr 29, 2004

2,967

3

48

Bastrop,TX

Nov 3, 2007

#12

• Nov 3, 2007

• #12

SaleenGT2001 said:

forget the evap system. just have all the codes turned off when it gets tuned.

i love being able to turn off CEL codes!!!

Click to expand...

Heh I am the tuner now So yea its no problem for me to turn all that crap off....and you know, I think ill do it Who needs that junk anyways.

 

SaleenGT2001

Well-Known Member

Jul 18, 2005

2,811

4

58

Four Oaks NC

Nov 3, 2007

#13

• Nov 3, 2007

• #13

hotmustang331 said:

Heh I am the tuner now So yea its no problem for me to turn all that crap off....and you know, I think ill do it Who needs that junk anyways.

Click to expand...

i dont see the point in keeping it if it isnt really necessary. i used the evap line that comes off the upper plenum to run my BOV so when it was tuned i figured it would throw a code eventually, so i just had it shut off