i put in a new spigot bush and gearbox yesterday then i got it running and tried to go round the block, i have the fuel pumps in parralel, i think when the high psi petrol pump kicked in the pressure killed the little pump, so i got another pump and a one way valve to protect it today, im pretty sick but so i may put it in tommorow

i heard the spool and the BOV a few times, was pretty cool

it doesnt seem to make positive boost in neutral though so its hard to check operation of fuel pumps and stuff, i havent revved it really hard but i would have thought it would still make boost without load on motor?

unless you have antilag or somethin like it the turbo wont spool up if there is no load but kewl for another A12TT

It won't make positive boost at idle. How much psi is your big pump making? It shouldn't be making too much as it's still carby.

the big pump uses 14psi, it is switched on by a hobbs pressure switch when boost hits, nad the small turned off

i think i need to get my car to my mechanic cause i really have no clue whats happening exactly, there were noises coming from exhaust hitting floor and rattling when i back off and i had three mates in the car (who helped push start a few times )

too much going on it kept just dying off i dunno if that was cause small pump was stuffed or what really

will keep ya's posted

oh and the bov was going off a lot so im no sure if its working properly or not either

It's probably best to get it to an expert to setup the fuel pressure and general tuning. You can get a malpassi fuel reg for carbys so you can get rid of the hobbs, if need be. But your mechanic will know more about his than i would.
Also what type of BOV are you running? It might be best to recirculate it at this stage.

hmm, as far as i know its a nissan silvia bov

i had a malpassi i posted a pic of

it was sold to me as a rising rate, but someone then told me it wasnt, i will post on it and then you can see and tell me maybe?

how do you mean recirculate?, basically id just block off the bov, yes?, i would prefer to not do this but if its gonna help

Yeah the BOV should only go off when you take your foot of the accelerator, when the car is idling, check that no air is coming out of the BOV, if air is, you need to pull apart your BOV and put in some washers, that way the spring is stronger and will hold the air in ya intercooler piping.

Cheers
Damo

the bov was going off a lot only when i was driving it, but i think it went off when i took my foot off the accelarator even if i didnt make positive pressure or maybe only a little boost, i thought i had to make say 7psi or something for it to go off when i take foot off acelerator

thanks for the tip though i will check that sorta stuff

The BOVs leaking then, if it's whooshing at idle,you need to increase the spring tension. Is it plumbed up correctly? When i say recirculated i mean plumbed back into the pipework