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hey Guys

does anyone have a carby L fuel in line or mpfi return line in their shed somewhere?

A-part wreckers says they dont really do L series stuff anymore.

and it holding up my conversion because i need a bigger return line for the EJ22

and would the standard carby fuel in line be ok for the EJ22 fuel in line right?

thanks

Rob

from memory i just beafed up the fuel lines to EFI lines and used all proper worm drive hose clamps. The standard clamps and hoses arent beafy enough.

alex

Mr Top Hat wrote: and would the standard carby fuel in line be ok for the EJ22 fuel in line right?

Yeah Rob I'm running a standard carbie fuel-in line for both the in and out lines. No issues from a fuel pressure point of view.

The extra fuel in line can be a pain in the arse to get in, I didn't cut mine down as I wanted to retain the crushed out buldge to help seal the line, so its got a massive "S" shape under the bonnet. I simply cable tied with some foam to the other fuel lines to mount it. Then did the rest as Alex said - beefed up the rubber lines and clamps to EFI rated stuff

Cheers

Bennie

oh really so all the excess fuel can happily go through the carby fuel return line, no surging?

Mr Top Hat wrote:oh really so all the excess fuel can happily go through the carby fuel return line, no surging?

A surge tank is a good idea (getting halfway up a steep hill and having the engine starve and stall can be scary), but your metal carby fuel lines will be fine. Replace existing rubber lines with EFI-rated hose.

Dane.

Mr Top Hat wrote:oh really so all the excess fuel can happily go through the carby fuel return line, no surging?

Sorry, you've miss read my last post. I'm using a fuel IN line for the return line as well - sourced from a carbie fed L series, just reshaped the end in the engine bay.

With a standard carbie return fuel line my MPFI I had a few years ago would surge under acceleration but didn't do it all the time. Had me stumped as it did it with two different engines... So I swapped the return line when the EJ went in - no issues with fuel so far, just cam belts and bearings after drowning the interior...

Worth the effort I reckon for piece of mind if you can source the stock carbie fuel IN line

Cheers

Bennie

I think i kept a few bigger fuel lines when i moved. I can check when i get back and let you know if you want bigger lines.

guyph_01 wrote:I think i kept a few bigger fuel lines when i moved. I can check when i get back and let you know if you want bigger lines.

yes please. when do you get back?

GOD wrote:A surge tank is a good idea (getting halfway up a steep hill and having the engine starve and stall can be scary), but your metal carby fuel lines will be fine. Replace existing rubber lines with EFI-rated hose.

Have you not "upsized" your fuel return line Dane? Had any issues with over pressurising of the fuel due to the return line being a restriction?

El_Freddo wrote:I also changed the fuel return line for another L series fuel to engine line &#8211]http://img514.imageshack.us/img514/2163/p8081609.jpg[/IMG]

Quoted from here

There's a comparison to the stock carbie return line and fuel in line, hence why I swapped to a fuel in line for the return

Painful job though, interior has to come out down the left hand side of the subi, you should have enough room under the dash to get it in, I just managed to do mine with the dash in!

Cheers

Bennie

i never touched my return line.

i did have overpressurising problems, but only on hot days, she did surge abit.

if you disassemble your fuel cap, drill a hole in the little metal bit and replace it youll be fine

worked for me.

alex