Im putting together a Braided SS Set up for when I turbo my 1990 NA. What do you guys do as far as the fuel rails, aftermarket or can I use the T2 rails?

 

i got s4 rails and removed the fpr and pd off them and then threaded AN fittings in the ends.

you could probably hack the ends off your s5 rails and weld some fittings on too.

 

I was thinking of getting the S4 Rails. But will the S4 Secondary bolt up to an s5 turbo manifolds

 

Yes.

A lot of people use the stock rails, cut the ends off and have AN fittings welded onto them. Or do as stated above and have the AN fittings threaded onto the S4 rails. I used KGparts rails. They have great customer service. Only issue I had with the rails was the spacers that go into the manifold and I had to play around with different types of O-rings to get them to not leak. They sell Fuel Rail "stock" as well. Buy a few feet and make your own. I couldn't imagine it being to hard at all. The SS line is a killer on your hands though! :/

 

yep. put about 2 washers under the rail as a spacer and they work fine.

 

Thanks.

 

you are probably better off welding the fittings on the ends of the rails though. they never leak and you wont have to search for the m12x1.25 and m14x1.5 fittings!

 

I have a set of S4 Rails(primary and secondary) with A/N fittings already Installed into the rails.If interested PM me.I don't need these,I am going to do my Fuel system another way.
also 88Rxna(tom) has a fuel setup with SS braided lines up for sale.Nice setup..

 

If I could go back and do it again I would have used the stock s4 secondary rail and pieced together the fittings I needed rather than buying the overpriced Rx7store kit. Only FD's need aftermarket rails. The FC stock rails are now proven to 500+ rwhp. You can get 1680cc secondary injectors that fit in the stock rails, http://www.injector.com/fuelinjector...50d1cd1ae939d7 at the bottom.

 

is there a diff between s4 turbo and s4 na rails?

thanks
bryon

 

i modded my s5 rails.

1. chop off the ends
2. clean up the end
3. insert braze in bung
4. braze it

it is pretty hard to screw up a braze. it was the first braze i ever made and it did not leak

I think i was lucky that my fitting was perfect for my application. it had a slight protrusion that fit perfectly into the fuel rail so the braze had a good place to go.
http://store.summitracing.com/partde...5&autoview=sku
i used that part and some brazing rod from home depot. I elected to braze over tig b.c i thought it would be easier to seal the joint with a braze because the brazing material is sucked into the joint kinda like soldering. If you really have no clue what you are doing take it to someone and have them weld it on. it should only be a few dollars to have it done

 

i cant find a pic of the rails after the fittings were brazed on, but here is one showing the prep

when i cut off the ends of the stock rails i tried to leave as much space as possible. I did have to cut out some crap on the inside of the rails from the fuel pressure reg and pulsation damper. it was no big deal, 15 mins with the dremel