tones Posted October 22, 2010 Share Posted October 22, 2010 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. Link to comment https://www.sau.com.au/forums/topic/341446-fuel-rail/ Share on other sites More sharing options...
zebra Posted October 22, 2010 Share Posted October 22, 2010 Standard Rail will do it easy, 800cc injectors on E85 wont support 400rwkws though. Link to comment https://www.sau.com.au/forums/topic/341446-fuel-rail/#findComment-5510343 Share on other sites More sharing options...
TiTAN Posted October 22, 2010 Share Posted October 22, 2010 how far north of 400? not much? 1000cc will do it with some room to spare lots? best go with some 1600cc injectors instead. Link to comment https://www.sau.com.au/forums/topic/341446-fuel-rail/#findComment-5510579 Share on other sites More sharing options...
N1GTR Posted October 22, 2010 Share Posted October 22, 2010 I maxed 1000's at 403rwkw. Link to comment https://www.sau.com.au/forums/topic/341446-fuel-rail/#findComment-5510616 Share on other sites More sharing options...
TiTAN Posted October 22, 2010 Share Posted October 22, 2010 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? Link to comment https://www.sau.com.au/forums/topic/341446-fuel-rail/#findComment-5510955 Share on other sites More sharing options...
tones Posted October 22, 2010 Author Share Posted October 22, 2010 (edited) 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 Link to comment https://www.sau.com.au/forums/topic/341446-fuel-rail/#findComment-5510973 Share on other sites More sharing options...
N1GTR Posted October 22, 2010 Share Posted October 22, 2010 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 Link to comment https://www.sau.com.au/forums/topic/341446-fuel-rail/#findComment-5511103 Share on other sites More sharing options...
N1GTR Posted October 22, 2010 Share Posted October 22, 2010 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 Link to comment https://www.sau.com.au/forums/topic/341446-fuel-rail/#findComment-5511105 Share on other sites More sharing options...
TiTAN Posted October 22, 2010 Share Posted October 22, 2010 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) Link to comment https://www.sau.com.au/forums/topic/341446-fuel-rail/#findComment-5511168 Share on other sites More sharing options...
NYTSKY Posted October 22, 2010 Share Posted October 22, 2010 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. Link to comment https://www.sau.com.au/forums/topic/341446-fuel-rail/#findComment-5511349 Share on other sites More sharing options...
tones Posted October 22, 2010 Author Share Posted October 22, 2010 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? Link to comment https://www.sau.com.au/forums/topic/341446-fuel-rail/#findComment-5511360 Share on other sites More sharing options...
rockabilly Posted December 2, 2010 Share Posted December 2, 2010 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 Link to comment https://www.sau.com.au/forums/topic/341446-fuel-rail/#findComment-5577167 Share on other sites More sharing options...
s13_Skyline_inside Posted December 5, 2010 Share Posted December 5, 2010 you've got an rb26 rail though dont you rockabilly, im pretty sure he's got an rb25 (side feed) rail Link to comment https://www.sau.com.au/forums/topic/341446-fuel-rail/#findComment-5579339 Share on other sites More sharing options...
rockabilly Posted December 5, 2010 Share Posted December 5, 2010 ahhhhhhhhhhhhh ok .lol Link to comment https://www.sau.com.au/forums/topic/341446-fuel-rail/#findComment-5580023 Share on other sites More sharing options...
SirRacer Posted December 8, 2010 Share Posted December 8, 2010 he just said hes got a 32, so top feed rail. gtr top feed injectors fit perfectly Link to comment https://www.sau.com.au/forums/topic/341446-fuel-rail/#findComment-5583957 Share on other sites More sharing options...
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