new fuel pump and lines

[Jimbo]

after having a few problems getting my 260z running after its winter storage I've discovered not only has my mechanical fuel pump packed in but the fuel filter before it has rust in it.
i have removed the fuel tank and its being refurbished by a company in birmingham city centre so hopefully it will cure any potential rust issues.
i am now in the process of removing the old fuel lines in favour of fitting new copper ones and have a new electric fuel pump to replace the mechanical one.
my question is how is the best way to get the shape of the old fuel line as it goes over the rear axle?
I'm planning to replace it with 8mm copper pipe as i have done on my vw as its fairly easy to bend but some of the bends are quite extreme and i think i may have to resort to using 8mm rubber hose round the twisty bits unless someone has a better idea?

my next question is I've read on here somewhere that the 260z may have been fitted with an electric fuel pump as well as the mechanical one?
I've searched the car and i can't find one however there is extra wiring by the fuel sender wiring, if there is an existing fuel pump loom and i wire my new fuel pump into it, where is it and what colour cables am i looking for?
would the existing wiring be good enough to support 10amp draw for the pump? or would it be better to run all new cables to a new relay?

regards

james

 

[toopy]

Something like this for the brake pipe

http://www.screwfix.com/p/mini-tube-bender/17898?kpid=17898&cm_mmc=Google-_-Product%20Listing%20Ads-_-Sales%20Tracking-_-sales%20tracking%20url&cm_mmc=Google-_-Shopping%20-%20Tools-_-Shopping%20-%20Tools&gclid=CN3N89P7-8sCFWQq0wod1DMDJg


My fuel pump is a Facet jobbie, fitted in the engine bay on the inner wing, i found an unused blue wire by the washer bottle, which is only live when the ignition is fully on, and i used this to feed a relay for the pump.

Something else to consider is a cut out switch for the fuel pump, i bought a used ebay one with only two wires, for an older vehicle of some description and used that.
If you give the inner wing a good thump when the pumps running, it does cut out and so far no false alarms when hitting a pothole either.

I believe other people have there fuel pumps at the rear so hopefully someone else will chime in with info

 

[richiep]

The preferred location for the fuel pump is at the rear, close to the tank. There are three threaded holes in the structural crossmember under the boot floor in front of the tank that are precisely for this purpose (on so equipped cars, the electric pump hung mounted in a splash guard fastened in that location). The pump "pushes" the fuel from this end, rather than "pulling" as it would in the engine bay (more efficient). Also, avoids any potential heat related issues affecting operation in engine bay mounted setups.

There is pump wiring to be found in the loom (although I'm talking from early/240Z perspective here), but a separate sub loom was also used for electric pump equipped cars to connect up the pump. In my car, I added a Facet Red Top at the back and run a separate, relay operated circuit attached to the battery positive and ignition at either the solenoid or coil (can't remember tbh). The circuit also incorporates an oil pressure cut-off switch attached via a T-piece to the oil pressure sender. This would cut the pump if there was a sudden loss of oil pressure (i.e. engine stops in crash situation but ignition remains on).

 

[Jimbo]

Thanks guys

 

[Jimbo]

Out of curiosity can you still get the rubber breather pipe that goes from the top of the tank to the filler pipe?
I had to cut mine as the clamp was seized on.
The internal diameter of the pipe is 16.5mm and is Cotten braided.

 

[MaximG]

Not sure the breather pipe has been available for a wile now.

 

[richiep]

It's NLA - at least in the UK (as Alan has noted, sometimes NLA items in the UK and US are nothing of the sort in Japan). I had to replace mine when I changed tanks with some generic nylon overbraided hose from eBay. It needs to be tough hose to prevent it closing up as it doubles back towards the right side of the car.

 

[Ped]

When I did the fuel pump on the 280zx I used Pirtek (Fluid Transfer Specialists) in Reading (counter service). They were very helpful in supplying marine grade fuel line which they crimped a step down connector onto for me. They have the fittings, fuel lines and hoses on the shelf. They have branches throughout the UK, so worth a call, or just take in the old lines/hoses and see what they have to match.

 

[Jimbo]

thanks again for all your help.

ive heard putting a spring inside of the pipe work at the bend can prevent the pipe kinking too.

ive ordered some fuel pipe off ebay so will see if i can get that to work or at least buy me some time till i can get a better replacement.

 

[yellowz]

What pipe are you using then?

 

[Jimbo]

ive followed richieps advice and ordered some nylon overbraid off ebay.
hopefully that will do the trick untill something better comes along

 

[richiep]

ive followed richieps advice and ordered some nylon overbraid off ebay.
hopefully that will do the trick untill something better comes along

Make sure you allow plenty of length to run the hose around in a smooth turn from left to right, otherwise it'll risk kinking at some point. I think I ended up with around a metre of hose behind the tank to do it. It's a pain the tank fitting faces away from the filler. The best solution is still to find an OE hose. Someone really needs to remanufacture them.