boostedbox

does anyone know what the stock injector sizes are of the tC's and xB's? im doin a swap and have an AEM FIC and need the numbers to convert. please help

JSosa

tC's have 380 cc (if i remember well)
xA/xB have 180cc

Im turbo and i use celica GT-S injector which run at 330cc

paul_dezod

tC have 320CC

Tamago

bumping this to subscribe and have a third verification

fullspool

so will the celica and tc injectors bolt right in to the 04 xb. im turbo right now but im on stock injectors running 5psi its a bit on the lean side but still safe. i want to run 8psi and i need bigger injectors.

Tamago

yes, they do

paul_dezod

Tc injectors drop right onto the rail

Tamago

beware.. the stock fuel rail is very fragile.. i accidentally tweaked mine at one point.. the cups like to bend.. just be gentle with it and you'll be fine.. without a way to scale back the new injectors, you may have difficulties..

paul_dezod

Yes, same applies to the tC rail. You must be careful.

You need some form of engine management to run forced induction anyway, so just retuning it to accomodate for the larger injectors should do the trick.

vettereddie

If anyone messes up their rail, send me a PM. I have three, plus a Perrin. The OEM rails I can send out for shipping only. Definately want some way to change duty cycle though, eManage blue actually does well with the tC ones on an xB.

Tamago

what do you want for the Perrin fuel rail? (xB i assume)

vettereddie

I'll PM since this is not a classifieds post. All the rails are from the 1NZ-FE from various years 04-06, though I believe they were all from xB's. They should fit the xA fine as well. Just trying to help people out who may need a replacement OEM rail.

vettereddie

I figured I'd update this with the correct information. Figures are based off of the 2004 Scion xB factory repair manual. According to it, the factory 1NZ-FE fuel flow rate is 47-58 cm^3 / 15 sec.

Translated, this is a 188cc - 232cc size injector @ 44 - 50 psi fuel pressure. Averaged out the injector size is 210cc @ 47 psi. Most injectors are calibrated @ 43.5 psi, so they'll actually act like slightly bigger injectors on the xB.

Also, the tC rate is 76-92 cm^3 / 15 sec, or 336cc @ 47 psi average (from 2005 tC repair manual). In short:

xB - 210cc
tC - 336cc

Maguyver

Ok so I'm about to change out my stocks to a set from a tc... Does anyone know witch seal/o rings I should change and if so should they be for the tc or the xb? Thanks guys

NoKoast

I have on 08 Xb and I need to find out what the stock cc is and how many psi they are. I'm in uncharted territory with this build and we're building a concept that is all trial and error

paul_dezod

320cc if I recall.

NoKoast

Thanks. Do you happen to know how much pressure is in the rail?

paul_dezod

43-47 PSI factory ECU regulated

NoKoast

Awesome. Thank you for the info. Am I right in thinking these are 24 lb injectors?

paul_dezod

Your math is off.... 30lb injectors.