Anyone made top feed fuel rails for spider EA82T ?

[discopotato03]

Hi all , my Australian spec 86 RX Turbo L sedan is getting a Vipec V44 EMS and I'm looking at injector options .

It seems all the modern injectors are top feed O ring style things and its got me thinking about conversion fuel rails for top feed injectors .

 

I've searched around and found some Nissans have been converted and there is a thread somewhere in here with pics only I can't download those pics .

 

The thing I'm interested to know is how I'd go trying to mount made up rails to hold the injectors down agains fuel pressure . BTW by top feed injectors I don't mean the EV1 era things that were held down with screws like the std EA82 MPFI ones , I mean top feeds held in place by the rail .

 

On the Hybrid Z board there is a pic of an aluminium extruded rail held down on a Nissan L Series six manifold via extended small diameter bolts in the std position and a "bridge beam" across the top of the rail itself .

I don't doubt its workable but looks a bit crude . Also BTW the long skinny bolts had bushes set up crush tube style so as not to compress the injectors .

 

I prefer the idea of steel or stainless steel material because it gives the option of playing with E85 and not having corrosion issues .

 

Mods so far .

 

Rebuilt XT4 Spider EA82T/8.1 CR/porting/late MPFI NA cams/1.75 bore TWE style header/custom built Garrett GT2854R (NS111 turbine in S15 housing)/86 3 Plug ECU TB on flange modified spider plenum - TPS and linkage on std for L sides . Thermal coated piston crowns and exhaust valves .

DR AWD close ratio trans with lower L LR/turned and milled flywheel .

 

Some pics at AuSubaru.com.au .

 

Anyone done fuel rails , cheers Adrian in Australia .

[suberdave]

subarutex (i think that is his screen name) did it. he could give you more info. but i beleave it was a pain and not worth much...

[discopotato03]

It may have been his thread that had links to pics but the links didn't work .

 

From what I think he said he used threaded barb fittings in his rails to keep the hose barb style injectors .

 

I was thinking more along the lines of top feed O ring style injectors retained by the rail and not by the insulators and plates factory style .

Maybe two shortish sections of rail extrusion with brackets folded up with 90 deg bends that bolt down to the original insulator bolt pads .

The vertical bits could mount off the "square" section of the rail extrusion having drilled and tapped holes or through bolts .

I've looked at L and Spider XT manifolds/heads and there doesn't seem to be anywhere else to bolt the rails down to .

 

I'll see if I can find a link to pics of a Nissan L Series six cylinder manifold done like this , pics at Hybrid Z .

 

Cheers Adrian in Oz .

 

http://forums.hybridz.org/showthread.php?p=1021415

Edited December 2, 2009 by discopotato03