GTR_JOEY

Hi all long story short, the car has been off the road for quite some time now so I want to test the serviceability of the fuel pumps. I want to do this as it will save time at the tuners as they are very busy. Basic run down of the system. Nismo pump as the lift pump to the surge tank twin Walbro 400lph's in the surge tank those 2 pumps supply fuel to a twin entry rail after running through individual in line filters then off to a sard fuel reg and through back to the surge tank There is also a return line from the surge tank to the main tank I need to check the serviceability of all 3 pumps so im just chasing a simple procedure so correct me if im wrong here The nismo intake that feeds the surge tank is under minimal pressure so i should just be able to give it 12-13 volts see how long it takes to pump out a litre of fuel. The pump is rated to 275lph though im assuming that is at a base pressure of 30 or 40psi, so in that case under no restriction it should pump even more then 275. Now for the 2 walbros, Originally what i wanted to do was place a pressure gauge between each feed line and the reg then measure the amount of flow per pump relative to the pressure. BUT the engine doesn't run so i cant apply a consistent amount of boost or vacuum to the reg so that wont work. This chart suggests that the Walbro 400 will flow 413 litres per hour @ 12 volts with no restriction but Surely to test the Walbro pumps properly i need some sort of restriction? If this is the case will the -6 lines with the inline filters give me the restriction i need to create pressure? cheers in advance

He's been there a couple of times and I wouldn't hesitate in saying he's very happy with them

D-Day!

Did you call the UK based company that sell them? They have no problems shipping to Aus

What size cat is on it?

Have seen that before.. Leaks under hard throttle only

What's the result of the work Pete, leak found?

Thanks mate

Ill pm the real good stuff then

Fek yea... Dirty ass thing

Yerp

Not many i imagine, most run quaife

Where you located?

We should definitely put that f**ker in!

Maybe a bit more then I quoted, but i dont beleive it is losing 100hp through the drive train See how it feels

Your probably around the 560-570hp mark ATM Pete 700 is absolute best case scenario

Considering that dyno also has inflated figures

Pete, I find it hard to believe that the bigger duration cams mad as much response as the smaller cams. Also find it hard to believe that the larger exhaust didn't make a difference.. Unless the Cat is now restrictive. What size was is the cat? Also can you post these "diary" results Pete?

Take it to a new tuner, drop the car and see how much more power it makes. I would NOT be surprised if the figures are fudged to make them seem similar to previous result, therefore making CRD appear not as stupid

Lol did anyone say flex tune?

Plus hose clamp obviously

Yep, liquid metal with a rubber cap from the auto store.. Job done

Don't worry, some idiot will buy them bahaha

Been saying this for sooooooo long

Car ran fine for 10 thou ks, I would have assumed that if it was incorrect installation it would have failed before then