rb20det questions - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

l adam l · 01-31-2014, 12:51 AM

i've done some research on my rb... itll run fine then to a certain point it will run like **** it kinda sounds like a boxer engine its misfiring so much...its the ignitor chip which i plan on changing to a j30? chip. is that the best one to use? or which one is the best? also what injectors are interchangeable with the rb20?

Sileighty_85 · 01-31-2014, 01:03 AM

As far as RB20's go Electronically not much is really plug an play from other Engines.

You can use an RB25/Z32/J30 ignitor but have to repin and use the new ignitor plugs

same goes for the Injectors they are RB20 specific for OEM plug and play (unless it was a R32 RB25DE)

l adam l · 01-31-2014, 01:09 AM

so you could use rb25, z32, etc injectors if you were to get the harness for it to repin it?

...nvm i think you answered this already. thanks!

l adam l · 01-31-2014, 02:31 AM

i plan on running e85 in the future...would 750cc injectors work? i am only wanting 400ishwhp out of this car...i know i need more than just injectors, i need some type of engine management, just seeing if anyone else has used these on e85 before? i've searched and found nothing...if someone has already answered this post a link please!

DRD · 02-02-2014, 12:34 PM

I had a what sounds like a similar misfire issue. I traced it back to poor grounding of the ignitor. Once those grounds were making a solid connection, I never had another coil pack issue, and never changed the ignitor. My old RB20 setup made 400whp on e85 at 20psi. It was super fun, but extremely laggy. I do not recommend running the same T04E turbo. At that hp/boost level I was maxxing out my walbro 255lph fuel pump. I ran 1000cc modified KA24E injectors, as these were a direct bolt in to the stock fuel rail. High impedance/top feed. For an ecu I ran Apex'i Power FC that was modded for an RB20.

dyno:

engine:

in car video:
e85incar.wmv - YouTube

DRD · 02-02-2014, 12:47 PM

sorry, just going to dump this here for anyone searching in the future, as I remember it took me forever to find:

RB20DET base ignition map:

and RB20DET ecu pin out diagram

l adam l · 04-04-2014, 02:01 AM

bad grounding on ignitor? just ran grounds to something else or rewired them and back in same spot?

Con-city_s13 · 04-16-2014, 12:03 PM

KA24E injectors are identical to stock rb20 injectors.
I have one on my rb20.

l adam l · 04-17-2014, 12:54 AM

That's a good tip. Thanks

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01-31-2014, 12:51 AM	#1
l adam l Zilvia Member Join Date: Feb 2009 Location: Murfeesboro, TN Age: 32 Posts: 254 Trader Rating: (0) Feedback Score: 0 reviews	rb20det questions i've done some research on my rb... itll run fine then to a certain point it will run like **** it kinda sounds like a boxer engine its misfiring so much...its the ignitor chip which i plan on changing to a j30? chip. is that the best one to use? or which one is the best? also what injectors are interchangeable with the rb20?

01-31-2014, 01:03 AM	#2
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	As far as RB20's go Electronically not much is really plug an play from other Engines. You can use an RB25/Z32/J30 ignitor but have to repin and use the new ignitor plugs same goes for the Injectors they are RB20 specific for OEM plug and play (unless it was a R32 RB25DE) __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

01-31-2014, 01:09 AM	#3
l adam l Zilvia Member Join Date: Feb 2009 Location: Murfeesboro, TN Age: 32 Posts: 254 Trader Rating: (0) Feedback Score: 0 reviews	so you could use rb25, z32, etc injectors if you were to get the harness for it to repin it? ...nvm i think you answered this already. thanks! Last edited by l adam l; 01-31-2014 at 01:13 AM.. Reason: idk

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01-31-2014, 02:31 AM	#4
l adam l Zilvia Member Join Date: Feb 2009 Location: Murfeesboro, TN Age: 32 Posts: 254 Trader Rating: (0) Feedback Score: 0 reviews	i plan on running e85 in the future...would 750cc injectors work? i am only wanting 400ishwhp out of this car...i know i need more than just injectors, i need some type of engine management, just seeing if anyone else has used these on e85 before? i've searched and found nothing...if someone has already answered this post a link please!

02-02-2014, 12:34 PM	#5
DRD Join Date: Aug 2007 Location: phoenix Posts: 9 Trader Rating: (1) Feedback Score: 1 reviews	I had a what sounds like a similar misfire issue. I traced it back to poor grounding of the ignitor. Once those grounds were making a solid connection, I never had another coil pack issue, and never changed the ignitor. My old RB20 setup made 400whp on e85 at 20psi. It was super fun, but extremely laggy. I do not recommend running the same T04E turbo. At that hp/boost level I was maxxing out my walbro 255lph fuel pump. I ran 1000cc modified KA24E injectors, as these were a direct bolt in to the stock fuel rail. High impedance/top feed. For an ecu I ran Apex'i Power FC that was modded for an RB20. dyno: engine: in car video: e85incar.wmv - YouTube

02-02-2014, 12:47 PM	#6
DRD Join Date: Aug 2007 Location: phoenix Posts: 9 Trader Rating: (1) Feedback Score: 1 reviews	sorry, just going to dump this here for anyone searching in the future, as I remember it took me forever to find: RB20DET base ignition map: and RB20DET ecu pin out diagram

04-04-2014, 02:01 AM	#7
l adam l Zilvia Member Join Date: Feb 2009 Location: Murfeesboro, TN Age: 32 Posts: 254 Trader Rating: (0) Feedback Score: 0 reviews	bad grounding on ignitor? just ran grounds to something else or rewired them and back in same spot?

04-16-2014, 12:03 PM	#8
Con-city_s13 Join Date: Jan 2012 Location: Concord, NC Posts: 43 Trader Rating: (0) Feedback Score: 0 reviews	KA24E injectors are identical to stock rb20 injectors. I have one on my rb20.