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-   -   fuel injectors (https://www.fitfreak.net/forums/fit-engine-modifications-motor-swaps-ecu-tuning/43229-fuel-injectors.html)

CamFit 06-08-2009 10:06 PM

so if u want to boost to 10 psi will the 310's that come with the t1r kit work?... or will i need 370's min or 450s for some leayway incase i deside to build the motor later.... also will the fuel pump need to be upgraded?
Im hope that 310 that come with the t1r kit will be sufficent to run 10 psi.... but better to know now before i tune than try to tune @10psi and max out the injecors..... or the fuel pump...
thanks in advance
Cam

kylerwho 06-08-2009 10:34 PM

guys are running 10psi on the t1r 310cc injectors.... i think it is almost maxing them out though.

artieman 06-08-2009 10:57 PM


Originally Posted by kylerwho (Post 671379)
guys are running 10psi on the t1r 310cc injectors.... i think it is almost maxing them out though.

thats freaky...if they are running the injectors maxxed that leaves no room for fuel corrections the ecu does for intake air temp and engine coolant temp....what im coming up with here RC Fuel Injection is saying you guys will need 400cc injectors for 200bhp (crank horsepower)

i would suggest going with something like the acura rdx injectors since they are cheap and oem reliable and 410cc

basicly go with as big of a injector as you can idle properly...my n/a 1.9 liter motor in my 2k civic si runs on 440's without issue....ive idled 1.8liter gsr motors on 1000cc injectors without issues....

go with the acura rdx injectors or get rc440 injectors....

CamFit 06-09-2009 04:51 PM

thanks for the heads up, now i have got to compair the local pricing for the rdx vs the rc440's..... anyone want to buy some 310's?
also, the fuel pump issue... intank or exernal? any suggestions? or not needed for 10 psi?
thanks in advance
Cam

Spooling 06-10-2009 01:48 PM

im still not 100% sold on the RDX injectors.. its just bugs me to use some other car's oem injectors

fuel pump should, in theory, be upgraded along with the injectors.. usually it's Walbro 255lph.. i think it's an inline fuel pump so should be simple enough

artieman 06-10-2009 02:11 PM


Originally Posted by Spooling (Post 672619)
im still not 100% sold on the RDX injectors.. its just bugs me to use some other car's oem injectors

fuel pump should, in theory, be upgraded along with the injectors.. usually it's Walbro 255lph.. i think it's an inline fuel pump so should be simple enough

plenty of peope use rdx injectors in k series setups...the oem injectors have lower failure rate then RC injectors so i dont understand why your not sold on them....

walbro 255 is an intake fuel pump...if you want inline use a bosch...i wouldnt recomend inline fuel pumps though...

CamFit 06-10-2009 05:35 PM

so 4get the inline pump.... walbro 255 is the one to go with? or mabe a bigger 1? so if in the future i build the motor i wont have to go buy it then...
also y are you not sold on internal pumps artie?
thanks in advance
cam

artieman 06-10-2009 06:01 PM


Originally Posted by CamFit (Post 672785)
so 4get the inline pump.... walbro 255 is the one to go with? or mabe a bigger 1? so if in the future i build the motor i wont have to go buy it then...
also y are you not sold on internal pumps artie?
thanks in advance
cam

the walbro 255 is plenty big enough for us...ive run built gsr turbo motors on 1000cc injectors to over 500hp with a 255hp (high pressure version of the 255) get the walbro 255hp or 255 and youll have more then enough fuel

i dont like inline pumps because its another point of failure...also if either pump fails you end up getting less fuel and going way lean and possibly doing damage...with just one pump if it fails your engine shuts off no damage...

1990hondahf 07-16-2009 01:15 AM

FYI..part # 16450-RWC-A01

$36.74 each @
Acura Parts @ AcuraOEMparts.com - Genuine Acura OEM Parts from Delray Acura

kylerwho 07-16-2009 02:33 AM

and those work on the stock l15 motor?

Polish 07-16-2009 08:09 AM

Yes, you just need to mod the stock plugs or wire in Scion plugs so they plug in.

It's what I'll be using.

1990hondahf 07-22-2009 12:54 AM

What are the stock injectors in CC's?

Polish 07-22-2009 08:20 AM

185 or 195cc depending who you ask.

Either way, VERY small.

1990hondahf 07-23-2009 01:13 PM

I guess so. I ordered the RDX one for my build....should be enough.... :)

Spooling 08-11-2009 10:57 PM

the RDX injectors don't even fit the stock fuel rail... not even close

went with 410 RC's

Fit Hybrid RS 2012 07-28-2015 01:45 PM

Sorry for bumping old thread but i have been searching if RDX 410cc will fit into fuel rail for GE8 fit?
some say they fit right in some ^^ say they dont?
i am confused.any one have a practical experience kinly help,because i need them for my turbo setup

Myxalplyx 07-28-2015 04:07 PM


Originally Posted by Fit Hybrid RS 2012 (Post 1314688)
Sorry for bumping old thread but i have been searching if RDX 410cc will fit into fuel rail for GE8 fit?
some say they fit right in some ^^ say they dont?
i am confused.any one have a practical experience kinly help,because i need them for my turbo setup



Spooling said they don't fit. That's it! Case closed! No-one responded afterwards.

Fit Hybrid RS 2012 07-28-2015 09:05 PM

but from forum post i find RSX injectors will fit out GE8 fits.and the http://www.ebay.com/itm/Honda-Civic-Acura-RSX-K20-K24-R18-RDX-410cc-Denso-Fuel-Injectors-adapters-4-/201394139955?hash=item2ee406b333&vxp=mtrinjectors listing show that they fit RSX.so they should fit.
What about http://www.ebay.com/itm/TRE-370cc-Fuel-Injectors-Fit-Honda-Turbo-B16-B18-B20-D16-D18-F22-H22-H22A-VTEC-/331543939962?hash=item4d318f0b7a&vxp=mtr ?

here from another thread it is stated that we share R18 injectors ??

kylerwho 07-28-2015 10:19 PM

I am running rdx injectors in my gd3. They literally bolted right in. I did have to change the clip and file down the pins slightly. I used Toyota sienna sidemarker clips.

This is a decent write up,
DIY: RDX Injector install - 8th Generation Honda Civic Forum

I bet they will fit in the ge8 just as easily.

I don't know why spoolin said they don't fit at all?

Fit Hybrid RS 2012 07-28-2015 11:47 PM


Originally Posted by kylerwho (Post 1314770)
I am running rdx injectors in my gd3. They literally bolted right in. I did have to change the clip and file down the pins slightly. I used Toyota sienna sidemarker clips.

This is a decent write up,
DIY: RDX Injector install - 8th Generation Honda Civic Forum

I bet they will fit in the ge8 just as easily.

I don't know why spoolin said they don't fit at all?

Yup the spoolin post was against all the evidence and other posts.and the thread you mentioned,the guy also using RDX injectors,which are being used for K20,k24 ,R18,RSX. so thats why i got confused.but now i am clear.Thanks to you.can you people tell size of our top O-ring, 11 or 14 mm?
Meanwhile the TRE responded to my email.he said to send me a pic of my Injector.


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