bapark, why not order off ebay or a internet site (if you can find a reputable one ) and buy some of the more difficult parts you need.This is not a plug but (http://www.ozeparts.com.au OR https://rsp-secure.com/Shop ) actually have some parts for datsuns 1200 utes and other miscelaneous perfoemance parts. Quite affordable too.

Here are the stock fuel pump specifications :

71-73 A12 2.4 psi (0.18 kg/cm2) 450cc/min
1974 A13 3.4 psi (0.24 kg/cm2) 450cc/min
1975 A14 3.8 psi (0.27 kg/cm2) 600cc/min
1976 A14 3.0-3.8 600cc/min

Since these all use basically the same carb, you can see the exact pressure isn't so important ... Just make sure the flow is enough.

The flow test is done at 1,000 rpm: disconnect and plug the fuel line. Start the engine, and let the fuel go into (at least) a one liter container. Turn the engine off in one minute and measure how much gasoline was pumped. Be careful ...

These are US specs, but probably the same for other countries.

Barpk chillout noone is pissed ( except bob probably! lol!)

So you are getting it!

Go the Datto said he used another setup!
hopefully he will read this and explain his version a bit further!
( I know he used low pressure fuel but when his car got to a certain boost it triggered a solenoid or something to allow for the hi pressure fuel to flow!)
So we'll wait for him to get back to us!

i like when people gets pissed off, but u people r all i have to come to, so guys b cool, i am a rookie, but not that illinformed as i look, main prob is that i have only one engine to work upon, and that car is used every day by other members of my family too, so i dont want to take much risks, but i will turbocharge my A12 that i know.
regarding fuel pumps, i have concluded that on my carby setup its not possible to get away with mechanical or non EFI electrical pump, i have to get a EFI elect. pump for 20 PSI or so. but i cant get a regulator here in PK, so what do u guys suggest i do?
can it be made in a workshop somehow?
can i build a homemade loop system around carb whose PSI can b controlled from dashboard of the car according to boost PSI?
anyother options?
barpk

No problem!

( yes thats one more tally! lol!)

Whoops, cheers for pointing that out mate.
Hopefully no one is confused.

Simon I agree with everything you said but If you look two blokes asked about fuel pumps:
1 with a NA setup ( Ernals ute!)
and Barpk who it seting up a blowthrough carbie!

Ernals ute needs a low pressure pump like you just described and I had previously!
And Barpk needs a high pressure pump
( As he will have forced induction! )
( Please try not to confused Barpk as he seems pretty confused already!)
( No offence Barpk!)

Mate if you are just running a NA setup with say a single carb, any EFI fuel pump will have too much pressure. I have this problem in my Ford ute. It runs an EFI fuel pump to a single Weber (42ml or something, downdraft). The fuel pump has so much pressure that it pushes fuel past the needle and seat and floods the car on start up, you can actually see fuel pouring down the carb when the fuel pump is on but the car is not running!

What you will need (same as me) is either a fuel pressure regulator which I think someone might have mentioned. This will bring the pressure down to something that wont push fuel into the carb.

The other option is a special Electronic Fuel Pump for a Carby car. They are avaliable at Repco or Burson's or similar places. All you have to do is connect the pipes.

I had a mate on another forum check out some info for me on Ford Fuel pumps:

Ford XF Falcon EFI Fuel Pump - 250kPa = 36Psi(?)
Ford XF Falcon Carb Pump - 48-56kPa = 7-8Psi

The carby pump was run off the engine like a 1200 one but it gives you an idea of the difference in pressures.

I might check out some prices for the electronic fuel pumps for carby cars (low pressure ones) and get one. I assume it would be cheaper for one of these than a pressure regulator and less stuffing about.

Cheers,
Simon

Barpk - When I said boosted i mean the cars me and my friends have messed with! ( They have all been tourbocharged! or we haven't bothered touching the fuel pump!)

When I said fuel press was set at 6 psi I am saying that when the car isn't running any boost pressure this is where the feul pressure has been set! ( I am basically saying that whether the car is boosted or not( meaning not turbocharged) the needle and seat can handle 6psi fuel pressure!)

The reason we set it to this much ( 6 psi )
Is so that when we run any boost pressure the fuel pressure is always going to be atleast 6 psi more than the boost psi!
( If you still don't understand go back and read all of the stuff I have written and what others have tried to explain in simpler form!
Other wise all I can say is try and see for yourself then you will work out what works and what doesn't! )

And I couldn't be bothered repeating myself as I get sick of it and I bet others do too!
( Plus I makes me seem like a ( I think I know it all! ) Wanker!

Yeah I agree but I wasn't really that bothered with the 1200 as it wasn't going to stay stock for long!

And if the limitations how much air and fuel you get! why don't you all boost your cars?
( Answer because sometimes you just cant be bothered! )