A rising rate fuel pressure regulator and electric fuel pump capable of over 10psi is what you need. You need to understand that a pressure difference between the fuel pressure and air pressure must be maintaned to achieve good mixtures. Take for example a N/A carby setup fuel pressure is about 3psi greater than manifold pressure ever is. So when boosting you need to increase fuel pressure accordingly to boost. 7psi boost should have about 10psi fuel pressure etc etc. i have not had any problems with the carby not holding pressure or draining the fuel bowl (i drilled the needle orrifice out to about 2.5mm and adjust the float level after of course)

As far as the hole on the 32/36 weber that is a fuel bowl vent or something and i found it best to block it off. i am running the same tubro and same carb as you and have had no problems with lean mixtures (if anything i over did the jets and it runs quite rich on secondary.)

I am running a holley blue electric pump with a malpassi r/r reg for a carb. I also modified the tank to have a 5/16" pickup and put a filter (plastic ryco one) before the pump and a Z200 after the pump.

ok mate this is heaps easy to understand now wot did u use to block off that vent?

someone on ozdat said i needed
Then use a fuel solenoid switched via a hobbs switch.
heres the link

http://ozdat.com/forum/viewtopic.php?f=27&t=19409

ive never heard of the hobbs switch and would just say that at the moment its another thing to go wrong so leave it out. get you fuel pressure sorted out and we'll see what happens

now im just chassing a fuel pump but dont have 300 bucks spare for a holley blue one has anyone got any other recomendations on wot one to get in that psi range??

Use the PROCOMP Blue!
PROCOMP BLUE

I was having fuel lean out problems as well with my blow-through supercharger. Just wasn't pushing enough pressure. I up'd my fuel line diameter to 5/16" and went with the Blue pump as well as a Mallory 4309 Regulator.
Mallory 4309

At idle with vacuum, my pressure is around 7-8 psi. When during fuel boost, it increases to 14 psi. I am currently using twin 32/36's with 115 jets on the mains and 140 jets on the secondarys. Full Boost is at 10 psi.
I fought lean out for along time and didn't want to pay the Holley pump price. The Procomp is the same as the Holley except a lot less expensive. At $59.99 its a steal and it even comes with an adjustable lighter spring to reduce the pressure to around 7 psi if you want to reduce the pressure.
Procomp has many other items. Fuel Regulators as well.

thanx man i only just got this post but had already purchassed a holy blue on the w/e cause every automotive place i went to told me holly blue was the only one in that range i needed so i got one i also have a malpassi r/r reg
so i installedthem and it seemed that it was over fueling and spluttering so i comp tested my engine piston 1,3,4 like 180psi and no.2 was 80 so decided to take my engine out and check/rebuild it wen i stripped it i noticed no marks in the piston barrel so i took the pistons out and on no.2 between the rings it was all cracked and bits missing so now my plans are a full rebuild im going to send my cam of to get reground new pistons new rings (possibly forged pistons depending on $$$) probbably double valve springs aswell also i might aswell get my sump modded to b larger and get it baffled
is there anything anyone can recomend to this build as i do not kno that much about ??

wen i get time i will have to start a project build on this engine.

talk to crow cams about a regrind they'll talk you through what you need. unless you plan on serious track work dont bother with the sump. i'll come up with more later lol

alright guys i got some news on the whole turbo thing so since changing engine to an a14 i had floating around and 1st attempt i couldnt make it run a couple of days later i did it again and now have it running then after experimenting all different ways with getting the car running and checking fuel i have now got a fuell filter b4 and after my holly fuel pump and ane of my problems was that i didnt adjust the malpassi r/r reg i (i didnt think u needed to adjust it becaus it was r/r and i never got instuctions) well after that i now have the ute running sweet now and not running out of fuel press :) im stoked
thanx for all the help guy's i appreciate it

i will stick it on the dyno over the weekend and put the figures up

andy

oh and i forgot to add the a15 used t breathe like a b**chout of the pod on top of the roker cover even b4 the tubr now with the a14 none so my guess is that the whole time iv had that a15 its had a broken piston. . . . :( but all sorted now

Good to hear you got it all working.
Did you end up blocking the breather hole on the carbie? I would have and in the past have, feed it back to ensure you maintain a equil head of pressure on the fuel when on boost, if you up the boost furture blocking it off may cause you problems in the future, just something to keep in the back of your head.

Gratz on getting the setup working properly though

Bryan