Fuel Rail

[tones]

Just after some advice, I need to upgrade my fuel system on my 25/30. Was going to go twin 044's, surge tank, I have 800cc injectores, and was wonder what sort of power the standard r32 rb25 fuel rail will support? We're looking at 400+ rwkw, and figure I might as well make the system capable of running e85 with just an injector up grade later. Any advice is appreciated.

[zebra]

Standard Rail will do it easy, 800cc injectors on E85 wont support 400rwkws though.

[TiTAN]

how far north of 400?

not much? 1000cc will do it with some room to spare

lots? best go with some 1600cc injectors instead.

[N1GTR]

I maxed 1000's at 403rwkw.

[TiTAN]

something thats odd, hamish makes 320kw on 550cc, anthony makes 350-370 on 740cc and you make 403 on 1000cc.

out of fuel pump flow more than out of injector?

[tones]

We made 350kw with 550s but were maxed out. Not to far above 400kw. Titan and n1gtr are you talking with e85? I am aware i'll need bigger injectors with the e85 (wasn't sure how big though) but just wanted to make sure the rail holds the volume needed to support the fuel flow needed. I've heard of people doing twin feeds with return in the middle on the standard rail, is this any good? do aftermarket rails hold more volume? would that matter? I am new to these fuel setups and dont want to waste money if i can help it.

Edited October 22, 2010 by tones

[N1GTR]

something thats odd, hamish makes 320kw on 550cc, anthony makes 350-370 on 740cc and you make 403 on 1000cc.

out of fuel pump flow more than out of injector?

All rb30's?

Only change was injectors and look where it is now

[N1GTR]

We made 350kw with 550s but were maxed out. Not to far above 400kw. Titan and n1gtr are you talking with e85? I am aware i'll need bigger injectors with the e85 (wasn't sure how big though) but just wanted to make sure the rail holds the volume needed to support the fuel flow needed. I've heard of people doing twin feeds with return in the middle on the standard rail, is this any good? do aftermarket rails hold more volume? would that matter? I am new to these fuel setups and dont want to waste money if i can help it.

Yes e85

For the price of a twin entry rail I wouldn't bother to mod the stock one

[TiTAN]

All rb30's?

Only change was injectors and look where it is now

anthonys is a 30, hamish has a 25 (they are side feed, stock rail nismo injectors)

[NYTSKY]

I made 370rwkw on E85 with stock fuel rail and reg.

I would suggest changing the rail for anything over that. They are cheap as chips these days anyway.

[tones]

thanks guys, can you point me to someone who makes/sells a twin feed rail for the rb20/r32 rb25 manifold? i have also been doing some research on surge tanks, what do they use to baffle them? Who makes baffled ones? can you buy the baffle, if so where from?

[rockabilly]

weld some fittings on the end of the std rail, i have found the std rail has the largest inside volume of any aftermarket rail. i run 640 @ the hubs with 1000cc injectors on a std rail.. just my 2p worth .lol

[s13_Skyline_inside]

you've got an rb26 rail though dont you rockabilly, im pretty sure he's got an rb25 (side feed) rail

[rockabilly]

ahhhhhhhhhhhhh ok .lol

[SirRacer]

he just said hes got a 32, so top feed rail. gtr top feed injectors fit perfectly