Cheap injector upgrade

[JimX]

GTR injectors should be ok, but they are usually overpriced, and you will still need to modify them from low impedance to high impedance. RX7 injectors are usually more cost effective.

[WLD747]

Is it true that a Rotary 20B - 850cc Injectors work on an rb25? Has anyone done this before as they are side feed (high impedence)?

[SLY33]

so the 13b's are not a direct replacement for the stockies?

BTW. what are the CC's for stockies on a ER34???

Just a point of interest for the 34 injectors, I know SK has tested them to be around the same as 33 injectors, but just for reference sake: from HPI #32 (Project R34 article)

"the std injectors on the RB25DET Neo engine are only 340cc/min... ...Unfortunately Nissan chose to update this engine with the skinny new plastic bosch inectors, so aftermarket options are limited."

[knore]

600hp is 447kW.

At the crank that's a damn lot.

I would imagine 660-740cc would be better but then your car idles bad.

550cc will be fine for ~450hp crank situations.

btw. where the hell are you getting these prices for the cheap RX7 injectors and rails?

My next choice is the Nismo 555cc and they are pretty much $1,000 delivered.

Any contact for the cheap injectors and rail? Hook a brutha up

T.

Where can u get a set of nismo 555cc injectors for $1000 delivered?

[WLD747]

u can get the 20b x 6 injectors for around $500.

Is it true that a Rotary 20B - 850cc Injectors work on an rb25?  Has anyone done this before as they are side feed (high impedence)?

[Steve]

wld747, do you want your car to be able to idle properly? If not, go the 850cc injectors.

these links I found pretty handy when considering injector upgrades:

http://www.ap-engineering.co.jp/el/inj_side.htm

they also have a page for top feed injectors, but cant find it at the moment, will post up later

here it is:

http://www.ap-engineering.co.jp/el/inj_top.htm

[WLD747]

thanks steve i didnt realise that with bigger injectors idle becomes stuffed.

wld747, do you want your car to be able to idle properly?  If not, go the 850cc injectors.

these links I found pretty handy when considering injector upgrades:

http://www.ap-engineering.co.jp/el/inj_side.htm

they also have a page for top feed injectors, but cant find it at the moment, will post up later

here it is:

http://www.ap-engineering.co.jp/el/inj_top.htm

[lukits01]

Has anyone tried to control bigger injectors with a SAFC??

does it work?

[WLD747]

i heard u cant control bigger injectors well on a SAFC.

Has anyone tried to control bigger injectors with a SAFC??

does it work?

[Sydneykid]

Has anyone tried to control bigger injectors with a SAFC??

does it work?

The SAFC doesn't control anything! The ECU does that, the SAFC just bends the input signals to the ECU. So the question should be ................

Has anyone tried to control bigger injectors with the standard ECU?

Yes, and it doesn't work too well, cruise and idle are the problem, as is hot start.

[BigDatto]

Interesting thread. I have had my finger on this pulse for some time now. Before this old thread was dug up, I found out about Cosmo injectors here.

http://www.nissansilvia.co.nz/tech/howtous...0Binjectors.htm

All the lowdown you guys are seeking !

[WLD747]

very interesting facts bigdatto, Thanks

Interesting thread. I have had my finger on this pulse for some time now. Before this old thread was dug up, I found out about Cosmo injectors here.

http://www.nissansilvia.co.nz/tech/howtous...0Binjectors.htm

All the lowdown you guys are seeking !

[R31 POWER]

Also for a mild and tunable upgrade could you use CA18DET inj. at 370-380cc or RB26DETT inj. at 444cc? thanks

I know the GTR injectors need the resistor pack wired in but what about the CA18det injectors? are they a direct bolt in job?

[Sydneykid]

Hi Guys does anyone know the part number of the 13B and 20B injectors? I have found a set of 550 cc injectors that are side feed supposedly from a "Mazda". The part number is OF555-425 with a batch code of A40-00. The suspicion is based on the colour, they are red'ish brown, not purple as in the Silvia guide above.

[Steve]

http://www.meggala.com/partcss.htm

part no for 13B series 5 195500-1370

[MonstaS4]

The part no. for side feed 13B/20B 550cc is 195500-2460. These are purple top and are found in the 13B-REW (series 6 RX7), not the 13BT (series 5 and below which are top feed). They are also in the 20B Cosmo. I'm told all 6 are 550cc, but only 3 are side feed. I'm trying to confirm that the 20B's have the same part no. as the 13B-REW's.

[riceline]

Hey guys.. What was found on this? does anybody have any prices at all?

Side feed 550cc injectors.

[riceline]

Hey guys... Have been looking on the net for some of the cars that use side feed injectors as well...

Found that the

WRX uses 440cc side feed Injectors

S15 uses 480cc side feed Injectors

[MonstaS4]

About $50 - $80 s/hand for the 13B-REW's.

S15's are $290 new from Nissan - I'd guess they'd drop straight in. S/hand ????

Sard 550cc with collars - less than $200 each