Converting fuel rail from returnless to return type: where to get bits?

[wagonist]

I'm doing a conversion where the donor engine is a returnless fuel rail type (ie, the pressure regulator is in the fuel tank).

As I can't install the donor car's swirt pot (it's got everything in built), I need to convert the fuel rail to a return type.
On the inlet side is all good as the donor & recipient's car's inlet pipes are interchangable.

On the other end of the rail, there's something that looks like a FPR screwed into the end, but there's not anything coming off it.
ie the other end of the rail is drilled and tapped.

So, is there a FPR that can be fitted like this (if I have to get some inline pipe adaptors, there is enough room for this.

The recipient's car has a return line which is attached via a banjo bolt, but the FPR is attached via a flange, so I'm just looking for some suppliers I can take the bits to so that I can check for the necessary parts.

[cambelt]

You could use a BMW E46 style fuel filter which mounts along side the chassis and it has a FPR in the end of it , a bit longer than a Z 200 .
Single fuel line runing to engine with the supply and return from filter to the pump
Dave

[wagonist]

The inlet line has an inline threaded fitting (like a brake line) to the bottom of filter which is on the fire wall.
The outlet on the top is a banjo bolt type fitting to the fuel line on the engine.

There's no room under the car and severely doubt I could fit it into the engine bay. Interesting idea & thanks for the suggestion. Might be useful for others.

[The Witzl]

Steve,

lots of commodore guys come across this problem when fitting LS engines into older commies..... there is a product you can buy on ebay that solves the issues for you.

http://www.ebay.com.au/itm/LS1-LS2-C...item1e62501701


It's basically a fuel filter and fuel pressure regulator with return line all in one unit.
The idea is, you bolt it under the car near the fuel tank, and just use the feed line up to the engine bay.

Saves a LOT of fucking around!!

[dumbass]

problem is that corvette camaro fuel filter runs at 60 psi
just run hi press fuel hose from tank to engine fuel rail inlet

somewhere along this hose near the tank run the efi hi press pump

then somewhere between the efi fuel pump and the fuel rail inlet
fit a "t" piece and then running of this t piece run hi press hose to your fuel pressure reg

then return from yr external fuel pressure reg to the tank
it doesnt matter where u run t piece or press reg aslong as its between pump and fuel rail
and u dont need vac line

[wagonist]

ok, maybe this need a bit more info. This is for my Excel, and the donor car is an Elantra.
It is a race car that gets driven on both tarmac & dirt.
It has a plastic fuel tank under the floor under the back seat with a dedicated fitting to a metal line (that comes out of the top from the in tank fuel pump) that is continuous all the way to the firewall where it has an line screw fitting into the bottom of the existing fuel filter. The top of the fuel filter has a banjo bolt through which is the end of the fuel line with a dedicated fitting onto the end of the fuel rail.

So a couple of pointers. There's no room under the car anywhere for additional fuel pumps or filters. And there's really no spare room in the engine bay to fit something larger than the existing fuel filter.

Surely there must be available a FPR which can screw into the end of the fuel rail? There's already something there that can be unscrewed.

The other resort is to chop the end off another metal fuel rail with an FPR attached (Lantra comes to mind, the Excel rail is plastic), and weld that onto the end of the Elantra rail.

[knightrous]

Why not just buy some fuel rail extrusion, make it suit the excel injectors and bolt a FPR in the end.

http://www.efihardware.com/products/...00mm-long-4cyl
400mm extrusion for <$30.

[MR22ZZ]

Steve, have a look at JPs 2ZZ AE82 conversion. It's one of the neatest returnless to return conversions I've seen.

You can come around and try to connect mine up for practice if you want too...

[dumbass]

Y can't u just screw a brass barb fitting into end of fuel rail
Or any type of fitting
Then just fit external adjustable fuel pressure reg
Don't water yr time fitting a oem press reg as it might not be
Correct fuel press to suit yr needs
Good adj press regs sell for 200 bucks which ain't to bad
Just stay clear of Mallpassi ones

[wagonist]

This is exactly what I was thinking. Just I've got no idea where to buy the bits.
An adjustable pressure reg would be good as there's a chance it will be going forced induction at some point (not sure how I'm going to handle the fueling then)

[dumbass]

goto Motorsport connections

[thechuckster]

or a second-hand Sard FPR off ebay, mount on firewall to suit, line from rail to it as per suggestions above and then line in cabin back to tank. Add vacuum line from FPR to manifold and do skids in the forst. The sard will support boosted use.