nvmarx

iTrader: (1)

hey guys i have a s5 n/a 13bpport i am going to build a custom throttle body/manifold for it.
i want to know if i holley pump for the lift pump to a 2l surge tank then standard fd fuel pump for the main pump would flow enough fuel to my 2x 450cc +2x 1000cc injectors or should i buy a aftermarket main pump?
all so what size fuel lines should i run?
any help would be good even if the injector sizes are off, i haven't bought any thing yet only things i have were for my carb set up holley main pump and holley FPR and 10mm fuel lines

j9fd3s

iTrader: (3)

i think that pump should be fine, and you could probably just run the 2x1000cc injectors. the P port has better BSFC than a side port

S1sevenNZ

I'm running x2 550's on my n/a half bridge now with bung'd exhaust to keep it quiet and a VL fuel pump with no surge tank, Before i had opend exhaust and x2 880's injector's. Running on stock series 1 fuel lines.

I will be looking at doing for my next set up - carter lift pump, surge tank, walbro 255 (or bosch 044), x2 ID1000 injector's. To me that seem's good enough for a n/a or small turbo set up, And i will maybe upsize the fuel lines to.

Have you started making a manifold yet ?

Eeyore

iTrader: (1)

I'm also interested to know about a suitable main fuel line for on a 12APP with a Weber. Would 3/8 be large enough or a full 1/2"? I may also want to inject the car at a later date if that makes any difference.

RXvedub

iTrader: (1)

3/8 line will support up to 400 rwhp, so you will be fine

also since you going to inject the car later use a EFI fuel pump , run a return style system with a low pressure regulator for the carby so later you will only need to swap out the fpr

Broke Mechanic

I have seen some really cool home made ITB setups on pp's, especially the 20b pp's. Where are you getting all the parts and linkages from? is there a place you can buy parts to build your own, cause some of the ones I have seen don't look like they are scavenged off old buicks. Are you doing slide or butterfly? are you running the 2 1000cc's as stand off injectors?

-Kevin

nvmarx

iTrader: (1)

hey the one i am looking at is off a arctic cat snowmobile it is a twin 50mm with 1 injector per throttle body so what i wanted to do was run standard 550cc s4 injectors there and run ether 1000cc or 850cc as the secodarys up top with a custom fuel rail spraying them into the ram tubes. do you think this is over kill? i mean im going to run a holley lift pump to surge tank then a bosch 044 10mm lines (3/8) to a reg. some one tell me if this is over kill like should i just run a bosch in tank pump 10mm lines to a reg and only use 2x 1000cc injectors will that be ok with idol and low down revs?

PUTTZ

Sup dude,

Cool to see another 13B PP fc in the build.
I owned the orange FC in NZ that had the Green Bros PP in it, all I ran was an external holley blue and 10mm fuel lines, was only IDA powered, but never ever even got close to running out of fuel.

The diff ratio will be the biggest thing thats holds you back.
We ended up using B2200 diff head in the FC housing to get a ratio of 4.8, that made a huge difference to the car and driveablity.

nvmarx

iTrader: (1)

hey bro yea i have had a yarn to you afew times on kiwirotary can you PM me the details about your diff? i just have a s5 lsd in it for now, plus i have gone with a megasquirt efi set up to its all most complete after 3 years lol

PUTTZ

https://www.rx7club.com/rotary-drag-racing-167/broken-rear-end-fc-13b-pp-all-motor-844735/

^^ bit of a write up in here on what the Greens did, any more info youd have to get in touch with them bud, not exactlt sure on all the finer details.