Fuel pump question when upgrading

[vern]

So just gathering the parts for my impending mapping then realised the agro of whats involved in fitting the new pump lol

I am going to cut the hard pipes instead of the ball ache dropping of the tank down but would like to know the exact size of flexi fuel pipe needed to plumb it all back together again.

I understand theres two diameters required

 

[RsvRob]

You can remove the inspection panel and measure it yourself. Can't go wrong then.....

 

[vern]

You can remove the inspection panel and measure it yourself. Can't go wrong then.....

Yeah thats true mate, although how can i measure the internal diameter of the hard pipes if they arent exposed yet?

 

[RsvRob]

You'll be pushing the hose over the hard pipe. So it just needs to be a snug fit. Hard pipe wall thickness probably isn't even 1mm.

 

[Evomad4]

just make sure when u do cut the pipe that u dont crimp/bend the end were u r gonna put the rubber tubing onto no a few people who have done this and had problems after

 

[sponners]

Also a good idea to run the car briefly after changing the pump and then fit a new fuel filter due to any swarf that got into the system.

 

[mart1983]

don't cut the pipes m8...

 

[vern]

don't cut the pipes m8...

Ive seen all the pro's and cons of doing it this way, there is no issue if its done correctly ie sealed propperly then fuel filter changed after swop over.

Lots of cars have rubber fuel lines in and out ect.

 

[supamario666]

Cutting the pipe's is like running metal on metal for brakes!

 

[vern]

Cutting the pipe's is like running metal on metal for brakes!

So you argue the point that if correct sized fuel pipe is used along with decent jubilee clips this is going to be an issue?

Im sorry but if done well it would be fine, once again many cars use pressurised rubber fuel lines in and out of tanks aswell as into the engine so i think comparing this method to running around on shot brakes is a little scare mongering :whistling:

 

[RsvRob]

What pipes do you fit when you run an external fuel pump, ie. Bosch inline???

 

[Simon@NTS]

Are the cut pipes going to be swaged?

 

[Simon@NTS]

What pipes do you fit when you run an external fuel pump, ie. Bosch inline???

Those use swaged or barbed fitting but I'd prefer pressure crimped fittings

 

[vern]

Are the cut pipes going to be swaged?

If i can borrow a tool to do so i will.

 

[Simon@NTS]

A brake swaging tool would do I'd doubt you'd get it in as a restricted space, IMO spend an extra couple of hours and drop the tank, the tank don't even need to come fully off!

 

[vern]

A brake swaging tool would do I'd doubt you'd get it in as a restricted space, IMO spend an extra couple of hours and drop the tank, the tank don't even need to come fully off!

Thanks pal appreciate the advice, will have a proper look over the tank ect then.

 

[Simon@NTS]

My pipes have been cut and I'm not impressed, I've suffered a fuel leak so had to double clip, then I changed the fuel pump and because I couldn't get the pump in correctly I split the feed pipe took 2 hours to change as I double clipped it. I may as well dropped the tank, to add I didn't cut the pipes was already done but have seen some right f c k ups