My 4DSC

I need to order a pulley from Vortech today...
I've heard some people say for 10psi you need a 3.25"...
yet others have said I need a 3.125"....
Someone help please.

Thank You.

PS: Oh yea...this pulley isn't for me...its for a "friend".

Sprint

iTrader: (10)

my 3.25 pulley gives 9 - 9.5 lbs of boost

infinitiblast

iTrader: (2)

Running that 3.25 pulley did you ahve to make any changes to your fuel system other than the ones that the stock supercharger had you change. Such as fuel injectors, maf upgrade anything like that. What do you think you 0-60 speed is?

RussMaxManiac

Yea, do not upgrade pulleys unless you upgrade the fuel pump, injectors, etc. And you are not gonna be able to find ones to fit the 5th gen for the injectors, there completely different from the 4th, and will not work. Don checked them out when we installed on Adam's 2k,

Turbo95Max

iTrader: (25)

if anything id think it would be EASIER to find injectors for the 2k cause their top feed injectors and those are more widely used. its harder to find injectors for the 4th gen, i couldnt find any 440c's so ended up going with 370cc off ythe 300ZX.

Maximamike

Not to mention a hell of a lot cheaper. You can find 550 cc top feed injectors for around $300, where side feed 550 cc injectors are around $1000

Turbo95Max

iTrader: (25)

Mikey, hell yea! the Nismo 550cc injectors are like 1600 retail. set of 6. sucks! Nissan lists the 300ZX injectors for like $230 EACH. i refrained from saying "side feed" injectors cause i was corrected about that last time, heeh, i still think its called side feed tho.

Don in Texas

iTrader: (-2)

The factory 4th Gen 239cc injectors are side feed, but that won't make top feed injectors for this application any easier to find. I would worry about re-programming the 2000/2001 ECU before I spent $1,000 on injectors. It would suck to buy those parts then not have anyone that can re-program the ECU....


Don

My 4DSC

Well I remember someone telling me (Don?) that 9-10 psi is do-able with just an intank fuel pump...That true??
I'm getting a 255lph intank fuel pump...
I planned on 10psi but if thats too much maybe i'll do slighly less...like maybe 8psi or so...
I just want to change the pulley while everythings pulled apart AGAIN cuz i threw another belt...

ANYONE with experience using different size pulleys please give me the scoop!!

Thanks.

MardiGrasMax

iTrader: (14)

Does the super charger force the injector duty cycle to max, 100%? Or does it stay around normal, 70%? You may be able to get more juice from an AFC by opening the duty cycles a bit. And I think Steve from Chicago was saying he runs about 70psi FP with his set up, I dont know how much boost he has though. So you should have a bit more room with pressure too.

Confused

iTrader: (4)

My 4DSC

OOpps...replace "I'm" with "He's"...hahahahaa

gLok

Whats the compression ratio of your engines?

SteveChicagoSC

How about your Toyota?