What Is A Standard R33 S2 Fuel Pump Rated To?

[conor]

I need a new fuel pump as the car is running lean. It has some work done including a fuel reg. Was wondering can I put on a normal fuel pump. My car is running about 330hp

[GTSBoy]

330HP where? Fly or wheels?

But that's probably besides the point. Why would you buy a standard pump when you can get an 040 or Walbro in the $200 region?

[scotty nm35]

Walbro 342 - $100

Walbro 416L e85 compatible - $220

Either would need to be hard wired to the battery through a relay.

[STATUS]

after 10-15 years work halve its rated capacity...

[conor]

where would be the best place to buy one instead of online?

[Super Drager]

The one in my dads R33 couldn't hold for anything over 180rwkw or so. I wouldn't be pushing a stock r33 pump especially a 20y.o one.

[sonicz]

Just wondering what sort of fuel reg you have and how you have it set up including how your reading the pressure?

I got a nismo FPR in mine and my car keeps pinging over 9psi so I assume its running lean, unless I up the fuel pressure real high, in which case it runs like a dog below 4000rpm.

Getting a new fuel pump these days as I have the stocker in there too.

Still not sure which fuel line I need to splice to read the pressure (R33 GTST)

Edited April 27, 2013 by sonicz

[GTSBoy]

Measuring fuel pressure is easy and obvious. The pressure gauge has to go on the rail side of the reg (or in the supply line to the reg.)

[sonicz]

Measuring fuel pressure is easy and obvious. The pressure gauge has to go on the rail side of the reg (or in the supply line to the reg.)

So then the line in green here?

I don't get how a gauge can go in the "supply line to the reg" though, i.e what you said in the brackets. If you do that, aren't you measuring the fuel pressure from the pump, before the FPR, instead of after?

Any idea what size the standard nissan fuel lines pipes circled are? I already have a 100psi fuel gauge.

So something like this and two clamps would do the trick then?

http://www.ebay.com.au/itm/1-2-BILLET-ALLOY-INLINE-FUEL-PRESSURE-GAUGE-ADAPTOR-FITTING-/110769678546?pt=AU_Car_Parts_Accessories&hash=item19ca6328d2

Edited April 27, 2013 by sonicz

[GTSBoy]

The fuel pressure reg sets the pressure UPSTREAM of the reg, not downstream. There is no pressure downstream of the reg. The reg is on the outlet end of the fuel rail.

As such, the line you marked in gree is after the reg and is the wrong one. The one you marked red is the right one. You can tell, because is comes from the fuel filter.

Your fitting is OK. But just in case you were thinking of it, don't cut your fuel line. Get another piece of hose. Remove your existing line from the rail inlet, put that onto the T piece. New piece of hose from the other side of the T down to the rail.

[sonicz]

Thanks, man. I think that was the mistake I was making running it in my head. I'll follow the hoses tommorow.

You don't know the size of the standard Nissan fuel lines there so I know what size adapter to buy?

Is an adapter and a fuel gauge what most people do to read their fuel pressures?

[GTSBoy]

Put a pair of verniers onto the fuel rail inlet pipe. Get hose and T to match. It's generally about 8mm, but check first.

[boostn0199]

Std size is 5/16 which is close enough to 8mm

Edited April 27, 2013 by boostn0199