Fuel Systems

[skylinekid]

hey everyone i have a couple of questions i have a r33 gtst which i will be puting a to4z onto very soon i already have internals etc etc... im just unsure of wat sorta fuel system i need to install.... i wish to make 500-550. suggestions on size of surge tank size of fuel lines wat lift pump from tank wat pump afta surge wat fuel rail to suite greddy plenum.... wat injectors.... ne help is much appreciated thnx for ur time

[johnbarry88]

hey skyline kid the standard fuel pump will be ok for a lift pump as for the surg tank 2L would be around the mark, I would go with a 044 as a main pump and 3/8 fuel line. As for the fuel rail depending on what type of injectors, you could go top feed rail either greddy or sard and 700cc+ injectors or aftermarket side feed and same injector options..

[skylinekid]

hey skyline kid the standard fuel pump will be ok for a lift pump as for the surg tank 2L would be around the mark, I would go with a 044 as a main pump and 3/8 fuel line. As for the fuel rail depending on what type of injectors, you could go top feed rail either greddy or sard and 700cc+ injectors or aftermarket side feed and same injector options..

i just dont get the bit where i run 3/8 fuel line and if i leave the standard fuel rail its got a 5/16 entry so wat is the point of have 3/8 lines to just have the volume of fuel there to use.... and i wouldnt mind running standard rail with sard 850's reckon that would do

[R31Nismoid]

nothing wrong with the stock fuel lines

everyone else uses them

[Adriano]

What TO4z are you going to run, what power do you want to make? 500-550 what?

[skylinekid]

What TO4z are you going to run, what power do you want to make? 500-550 what?

okwell i have seen quite a few ppl do this now a to4z .84ex 25p making newhere from 520 to 580......

[r33cruiser]

how about just a 044 intank pump.. good for 600hp.

[skylinekid]

how about just a 044 intank pump.. good for 600hp.

yeh but wat about surge tank bigger lines aftermarket rails bigger injectors and so forth...... i dont think just a pump will do it

[Adriano]

bigger injectors certainly, ive seen over 1000hp at the crank with 5/16 fuel lines. T04Z's, are you planning on a garrett, or HKS, and once again, 500-550what, hp at the crank, KW at the wheels etc...?

[skylinekid]

bigger injectors certainly, ive seen over 1000hp at the crank with 5/16 fuel lines. T04Z's, are you planning on a garrett, or HKS, and once again, 500-550what, hp at the crank, KW at the wheels etc...?

550hp atw.... garret t04z... hks a lil to pricey i think

[johnbarry88]

just think about it when using a 700 hp pump flowing over 280l/h through 5/16 how long do you think its gonna last? make ya fuel system flow as much power possible its the main ingredient of making a car go fast the last thing you wanna do is restict it..

[skylinekid]

just think about it when using a 700 hp pump flowing over 280l/h through 5/16 how long do you think its gonna last? make ya fuel system flow as much power possible its the main ingredient of making a car go fast the last thing you wanna do is restict it..

therefore john wat is ur suggestion i have a 3lt surge tank ordered with 3/8 outlet to hold a bosch 044 pump and i was goin to go 3/8 steel to the front and then 3/8 hose to rail but im unsure if standard rail will do the job when i decrease hose size down to 5/16... i just need guidance in the rail and injector department and where to get.... i like side feeds cuz the sit low in the manifold and arnt so obvious makes it a lil bit neater... btw i have a greddy plenum so ne suggestion on 3/8 rail injectors yeh lol help me

Edited January 10, 2008 by skylinekid

[R31Nismoid]

yeh but wat about surge tank bigger lines aftermarket rails bigger injectors and so forth...... i dont think just a pump will do it

Not many people run

Bigger rails

Fuel lines

etc etc. The stock gear is fine as posted earlier.

Hell i was still using the stock EVERYTHING right down to the fuel reg and made 369rwkw.

Plenty more have archived a lot more than i did with the same gear also

[johnbarry88]

standard fuel rail would be fine with some modifications as above yes you can use standard stuff but the question is how long and efficiant will the system last...It all comes down to how much power you wanna make and if you wanna make it reliable...old saying "speed cost money how fast do you wanna spend" or something along those lines. Sard 720cc will be good for 300rwkw + with head room don't go under 700cc!

[skylinekid]

standard fuel rail would be fine with some modifications as above yes you can use standard stuff but the question is how long and efficiant will the system last...It all comes down to how much power you wanna make and if you wanna make it reliable...old saying "speed cost money how fast do you wanna spend" or something along those lines. Sard 720cc will be good for 300rwkw + with head room don't go under 700cc!

wat modification to fuel rail would need to take place..

[2BNVS]

i did a mod to my stock fuel rail to make it twin entry, stock lines... just an 044 external and 040 internal, made 352rwkw

[skylinekid]

i did a mod to my stock fuel rail to make it twin entry, stock lines... just an 044 external and 040 internal, made 352rwkw

ok got an ideas on how to do the mod or is it a trade secret

[skylinekid]

i did a mod to my stock fuel rail to make it twin entry, stock lines... just an 044 external and 040 internal, made 352rwkw

also i might state thats im chasing up into the 410kw atw 550hp

[WHITER33GTS-T]

I am running 2 X 044 pumps from my (est. 4L) surge tank each with their own 3/8 fuel line to a custom twin feed rail and 1000cc injectors. My RB25 made 399rwkw @ 17psi using twin T3/T4 turbos.

I went big first time so i dont have to worry about upgrading the fuel system in the future.

Edited January 11, 2008 by WHITER33GTS-T

[R31Nismoid]

Stock stuff will still be fine dude, we are telling you as we've done it