Do I need a resistor box to run them in my '00 itr?

And how do I test them?

Just plug them into the harness, but not into the fuel rail and listen for a clicking noise while trying to crank the car?

 

I had 310CC RC injectors too. (came with Greddy kit). NO resistors needed.

Just wire 'em up!

Ummm... you 'could' test them with 12V input for very short durations, see if they click, but that sounds like a recipie for burning coils in injectors (mostly because I have NEVER done it). Running them dry, you 'might' hear them.

-Chris

 

Since RC makes peak and hold and also saturated 310's, I wouldn't take this guys ^^^ advice. Sorry I can't help you with figuring out what they are but good luck!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HONDABROMANDUDE &raquo;</TD></TR><TR><TD CLASS="quote">Since RC makes peak and hold and also saturated 310's, I wouldn't take this guys ^^^ advice. Sorry I can't help you with figuring out what they are but good luck!</TD></TR></TABLE>

http://www.rceng.com/prices.htm

RC's "Popular sized injectors" have 310 Saturated (no resistor) and 270/320 CC Peak-and-Hold injectors (need resistors). I've never SEEN a 310 CC RC injector, but that don't mean crap since I really haven't seen very many injectors.

Have you seen a 310 CC peak-and-hold from RC?

But yeah, you should probably check them. An ohmmeter/multimeter would let you know for sure. Peak and hold are 2.5-3 ohms, Saturated are 12-16 ohms. Resistance != impedance, but since they're so far apart I would bet you could tell the difference.

The impedance on a coil would be slightly higher, so you might measure 10-12 ohms if they were saturated.

Good luck.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HONDABROMANDUDE &raquo;</TD></TR><TR><TD CLASS="quote">Since RC makes peak and hold and also saturated 310's, I wouldn't take this guys ^^^ advice. Sorry I can't help you with figuring out what they are but good luck!</TD></TR></TABLE>


.....well these came came with the greddy kit, so I'm assuming they're not needing resistors.

A friend of mine told me that if you go bigger than 550's, you have to have resistors.....

That's what made me start wondering about these ones.....

 

you're probably right since they came with the greddy kit. and they recently started making injectors 550 and larger that don't need a resistor box.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Black R &raquo;</TD></TR><TR><TD CLASS="quote">A friend of mine told me that if you go bigger than 550's, you have to have resistors..... </TD></TR></TABLE>

Your friend doesn't know what he's talking about.

Saturated injectors = no resistors needed (regardless of injector size)
Peak and hold injectors = resistors needed (regardless of injector size)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Reid &raquo;</TD></TR><TR><TD CLASS="quote">

Your friend doesn't know what he's talking about.

Saturated injectors = no resistors needed (regardless of injector size)
Peak and hold injectors = resistors needed (regardless of injector size)</TD></TR></TABLE>


Is there an inherent advantage that saturated has over peak and hold (or vice versa) on larger size injectors?

 

peak and hold = faster response, AFAIK, but carry larger current through them.

 

Do I need a resistor box to run them in my '00 itr?

use a VOM and find out if they are low or high impedance

 

Check the part # on the side of the RC. It should have an "s" or "p" before the size to show whether it is saturated or peak and hold.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18CXr &raquo;</TD></TR><TR><TD CLASS="quote">use an VOM and find out if they are low or high impedance</TD></TR></TABLE>




I was hoping there was a simple discernable marking set upon them by the mfr.

[edit] THANKS RODNEY! [/edit]

 

The RC saturated injectors have part numbers that start with SL2-xxx. xxx = the size of the injector in cc/min. A RC saturated 310cc/min injector would be denoted as SL2-310. The part number is engraved on the injector body in a semi-italic font.

An ohmmeter is the best way to confirm. Older RC injectors are 16 ohm, while the new ones are 12 ohm (but that might only apply to the 440cc/min or more saturated injectors).

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IN VTEC &raquo;</TD></TR><TR><TD CLASS="quote">The RC saturated injectors have part numbers that start with SL2-xxx. xxx = the size of the injector in cc/min. A RC saturated 310cc/min injector would be denoted as SL2-310. The part number is engraved on the injector body in a semi-italic font.

An ohmmeter is the best way to confirm. Older RC injectors are 16 ohm, while the new ones are 12 ohm (but that might only apply to the 440cc/min or more saturated injectors).</TD></TR></TABLE>


Ben, to the rescue again!

 

So which ones are they?

 

it doesnt really have to do with size. It has to do with whether they are Peak and Hold or Saturated. Now Yes awhile ago most injectors 550 and bigger were peak and hold, but thats not tru anymore. I can Assume yours are Saturated though

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by El Pollo Diablo &raquo;</TD></TR><TR><TD CLASS="quote">So which ones are they?</TD></TR></TABLE>


Ok, I looked at the injectors and the stamped markings on them... They have some numbers scratched into the sides of them. On the top, there's some #'s on the side of the top and on the front of the top.

Front of the top: "0722"

Side of the top: "D1720AA"

Around the midsection of the injector: "RC SL2-310"

All 4 injectors have identical markings at all points.....

Looks like these are plug and play for obd2 (except for the clips).

 

Those 310's you have Ken, should be the saturated/high impedence injectors. Should be all plug and play with obd2 cars.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ccfries &raquo;</TD></TR><TR><TD CLASS="quote">I had 310CC RC injectors too. (came with Greddy kit). NO resistors needed.

Just wire 'em up!

-Chris
</TD></TR></TABLE>


WRONG INFORMATION!!!!!!!!!!!!!!!!!!!!!!!!!

or it could be 50% of the time....

you need to find out if you have the saturated or peak and hold injectors before you just slap them in and start up the car....

you can kill your ecu if you have the wrong ones!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chad &raquo;</TD></TR><TR><TD CLASS="quote">


WRONG INFORMATION!!!!!!!!!!!!!!!!!!!!!!!!!

or it could be 50% of the time....

you need to find out if you have the saturated or peak and hold injectors before you just slap them in and start up the car....

you can kill your ecu if you have the wrong ones!!</TD></TR></TABLE>

READ JOO!

RC doesn't make a peak and hold 310CC AFAIK.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chad &raquo;</TD></TR><TR><TD CLASS="quote">WRONG INFORMATION!!!!!!!!!!!!!!!!!!!!!!!!!

or it could be 50% of the time....

you need to find out if you have the saturated or peak and hold injectors before you just slap them in and start up the car....

you can kill your ecu if you have the wrong ones!!</TD></TR></TABLE>


Well, Chris and I know each other's setups and that's why he suggested that - a little insider info that he had and others didn't; I have the same greddy turbo kit and the injectors that Greddy ships with said kit are RC 310cc saturated injectors.

Thanks for looking out for me though Chad!

 

no resistors are needed