RB FAQ - Page 40 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

smellslikerubber · 08-20-2014, 07:21 PM

also looking on other opions on where to go with the car from here? as far as motor work. what are good upgrades to start with? i want to get a good strong running motor before i go and try to drift the car. if that is what i decided to do with it

redline racer510 · 08-25-2014, 07:21 PM

Quote:

Originally Posted by smellslikerubber

s13
RB20

i have a mostly stock rb20. i just got it running strong but i still feel like it has a fuel issue. it has a walboro fuel pump and stock injectors. im looking to upgrade the fuel sytem and i want it to be top notch to where i only need to do it once. so im wondering what would be the best installs. 440cc injectors? or would something bigger be better. what would i need as far as fuel rail and lines? i also know i will need a FPR. im also started to look into the Greddy Emanage, would that be a good option as well? just looking for a good set up. i wanna make somewhere around 400hp when im done with the car. so suggetions and set up ideas are welcome

First off there are many things to consider when installing a proper fuel system. What is your HP goal and what are you going to be doing to the car. For most people with bolt-ons and moderate setups a walbro 255 will be enough to safely get you to around 450whp now if this car is going to see very high horsepower and or heavy track use you may want to look at a dual fuel pump setup and even a surge tank with dedicated power circuits,larger lines etc.You need to do more reading as this is a very simple breakdown of things and mistakes in this area can be expensive(damage engine).

smellslikerubber · 08-25-2014, 09:09 PM

i have a walboro 255 now. everything else in the fuel sytem is stock. oem injectors. i wanna make somewhere around 400hp when the car is done

redline racer510 · 08-27-2014, 08:24 AM

Quote:

Originally Posted by smellslikerubber

i have a walboro 255 now. everything else in the fuel sytem is stock. oem injectors. i wanna make somewhere around 400hp when the car is done

550cc injectors a fpr and z32 fuel filter and dont forget to have your car to have your car professionally tuned and you will be ok.

lamgee · 09-05-2014, 11:24 AM

rb20det stock
I want to replace the top intake manifold with side intake manifold and to put fmic with short piping runs just like rb26 setup. Can you guys tell me who makes quality intake and fmic?

240Z28 · 09-10-2014, 08:55 PM

I have an rb25det ecu. Would that run my rb20det?

fearlessKouki · 09-10-2014, 09:57 PM

No sell it and get a rb25 ecu!

240Z28 · 09-11-2014, 07:38 AM

So rb25 = good and rb25det = no good?

fearlessKouki · 09-11-2014, 08:45 AM

I meant get the rb20 ecu.

terrance john · 09-16-2014, 03:21 PM

can someone take a picture of a rb20 tranny and show me where the speed sensor is -.- im such a noob when it comes to this.

JTunedMotorsports · 09-22-2014, 07:05 AM

Quote:

Originally Posted by terrance john

can someone take a picture of a rb20 tranny and show me where the speed sensor is -.- im such a noob when it comes to this.

pm me your # i will text u

terrance john · 09-22-2014, 02:32 PM

Quote:

Originally Posted by JTunedMotorsports

pm me your # i will text u

pmed my man

terrance john · 09-22-2014, 02:47 PM

alright guys im going for 400hp ( yes ive read up) i just bought a holset hx35w turbo, question is does it bolt up to the stock manifold? also what type of 750 cc injectors should i run? and i am getting a z32 maf and a safc tuning setup. anything else i would need?

JTunedMotorsports · 09-23-2014, 05:55 AM

Quote:

Originally Posted by terrance john

alright guys im going for 400hp ( yes ive read up) i just bought a holset hx35w turbo, question is does it bolt up to the stock manifold? also what type of 750 cc injectors should i run? and i am getting a z32 maf and a safc tuning setup. anything else i would need?

What motor? Food for thought Im doing borg Warner EFR 7064 IWG, stock mani, 555cc RC, FPR, modded jun syle mani, aeromotive pump 340. z32 maf and rare PFC for the rb20. NEVER use a safc go PFC, rom tune or Haltech if you can get it to work for the rb20

seagrasser · 09-23-2014, 02:47 PM

HX35 will bolt up to stock exhaust manifold, but steering column and linkage get in the way (if LHD).

terrance john · 09-23-2014, 05:54 PM

Quote:

Originally Posted by JTunedMotorsports

What motor? Food for thought Im doing borg Warner EFR 7064 IWG, stock mani, 555cc RC, FPR, modded jun syle mani, aeromotive pump 340. z32 maf and rare PFC for the rb20. NEVER use a safc go PFC, rom tune or Haltech if you can get it to work for the rb20

alright my man yes its a rb20 , this is what i bought today! hx35 ( rebuild for 300 bucks 0 miles) 850cc injectors, walbro 255. next things i need is a pfc, rom tune or haltech. any recommendations on any of these and which ones i should go with? ALSO i want to get some ls truck coils would they work with the stock ecu even though the dwell time is much higher than stock? buddy of mine wants to sell his set pre wired for 200.

terrance john · 09-23-2014, 05:55 PM

Quote:

Originally Posted by seagrasser

HX35 will bolt up to stock exhaust manifold, but steering column and linkage get in the way (if LHD).

yeah its Lhd i have a modded down pipe for the steering colum and linkage + im getting a v band welded onto it.

seagrasser · 09-23-2014, 06:56 PM

OK, HX35 on a RB20 will spool fairly slow. What exhaust side is on it currently?

Check out here for another example.

http://zilvia.net/f/showthread.php?t=543836

Also, thought I said the turbo will bolt to the manifold (both T3) there is a clearance issue with the valve cover. A spacer and longer studs will give the needed .5 to 1 inch.

terrance john · 09-23-2014, 11:48 PM

Where can I get a t3 spacer from? And I might honestly upgrade to a rb25

Sent from my iPhone using Tapatalk

terrance john · 09-23-2014, 11:49 PM

Quote:

Originally Posted by seagrasser

OK, HX35 on a RB20 will spool fairly slow. What exhaust side is on it currently?

Check out here for another example.

http://zilvia.net/f/showthread.php?t=543836

Also, thought I said the turbo will bolt to the manifold (both T3) there is a clearance issue with the valve cover. A spacer and longer studs will give the needed .5 to 1 inch.

Meant to quote you but it's stock exhaust

Sent from my iPhone using Tapatalk

JTunedMotorsports · 09-24-2014, 09:08 AM

Quote:

Originally Posted by terrance john

Meant to quote you but it's stock exhaust

Sent from my iPhone using Tapatalk

Seems like you are having some issues, I could clear up most with what we have done in the past to RB cars, just pm me.

seagrasser · 09-24-2014, 09:50 AM

Quote:

Originally Posted by terrance john

Meant to quote you but it's stock exhaust

Sent from my iPhone using Tapatalk

Sorry, I wasn't clear. What size is the exhaust housing side of the HX35? Is it divided or single inlet?

There are a lot of reasons to upgrade to the RB25:
They are newer
They provide more torque
You can make some serious power
RB25 transmissions are almost bomb proof.

But, having a holset HX35 should not be your primary reason.

Here is another good thread here on Holset use. Even shows an RB25, Holset HX35, and spacer, with stock exhaust manifold

http://zilvia.net/f/showthread.php?t=429571

smoked240 · 10-19-2014, 10:59 AM

Alright I'm in need of a Rb guru. The machine shop I brought my Rb25 block to , punched out these plugs in the block to fully clean it. Now it's not any welsh plug, it's an iron plug either for oil or coolant. It goes straight through the block and there is 2 plugs, the front port is by the bottom large bolt on the water pump and between the oil pump, the back port is right above the rear main plate on the intake side.

If anyone knows where they can be sourced it would be very helpful!
My last option is to have a machine shop lathe me up two plugs but if they sell them it would make it easier. Thanks!

seagrasser · 10-19-2014, 04:21 PM

Found an old post that might help. Otherwise wait for those more experienced than me.

http://zilvia.net/f/showthread.php?t=259011

redline racer510 · 10-30-2014, 09:38 AM

Anyone have any experience with hx35 and r.s. Enthalpy tune? I have his tune for my stock setup plus no maf and it runs good, but anyone with major upgrades and his rom tune?

Beijing_Raccoon · 01-05-2015, 01:07 AM

Hey guys I'm going with an RB20 swap soon, and I have a couple of questions.
Is there a difference between using an R32 crossmember vs aftermarket mounts like the mckinney mounts?
I've heard with the mckinney mounts I need to make room for the starter.
Secondly, with a wiring specialties harness I'll be using the RB20DET ECU or the Stock automatic ECU my s13 came with?

fearlessKouki · 01-22-2015, 07:09 PM

RB25DET
I have strange idle surge problem that comes and goes. I have noticed that it will start to surge when i turn on the wipers. It was worse before but after cleaning the Idle control valve it has gotten better. It is totally random, also in order to stop the surging i would have to rev the motor a little until it no longer surges. Really annoying. Any guesses?

turbronegro · 01-24-2015, 07:58 PM

How much are RB25's with a 5speed going for these days?

seagrasser · 01-24-2015, 10:28 PM

about $2k plus or minus

smoked240 · 01-25-2015, 08:49 AM

I paid about $2500 with mount kit and 1-piece driveshaft from zero lift. That was about 6 years ago.

09-10-2014, 08:55 PM	#1176
240Z28 Zilvia Member Join Date: May 2008 Location: SoCal Age: 33 Posts: 279 Trader Rating: (5) Feedback Score: 5 reviews	I have an rb25det ecu. Would that run my rb20det? __________________ SPEED KILLS!! Drive a Honda and live forever!!

09-11-2014, 07:38 AM	#1178
240Z28 Zilvia Member Join Date: May 2008 Location: SoCal Age: 33 Posts: 279 Trader Rating: (5) Feedback Score: 5 reviews	So rb25 = good and rb25det = no good? __________________ SPEED KILLS!! Drive a Honda and live forever!!

09-23-2014, 02:47 PM	#1185
seagrasser Zilvia Member Join Date: Nov 2011 Location: Lynnwood WA Age: 46 Posts: 256 Trader Rating: (2) Feedback Score: 2 reviews	HX35 will bolt up to stock exhaust manifold, but steering column and linkage get in the way (if LHD). __________________ S14 RB25

09-23-2014, 06:56 PM	#1188
seagrasser Zilvia Member Join Date: Nov 2011 Location: Lynnwood WA Age: 46 Posts: 256 Trader Rating: (2) Feedback Score: 2 reviews	OK, HX35 on a RB20 will spool fairly slow. What exhaust side is on it currently? Check out here for another example. http://zilvia.net/f/showthread.php?t=543836 Also, thought I said the turbo will bolt to the manifold (both T3) there is a clearance issue with the valve cover. A spacer and longer studs will give the needed .5 to 1 inch. __________________ S14 RB25

10-19-2014, 10:59 AM	#1193
smoked240 Zilvia FREAK! Join Date: Jun 2010 Location: North Dakota Age: 30 Posts: 1,066 Trader Rating: (4) Feedback Score: 4 reviews	Alright I'm in need of a Rb guru. The machine shop I brought my Rb25 block to , punched out these plugs in the block to fully clean it. Now it's not any welsh plug, it's an iron plug either for oil or coolant. It goes straight through the block and there is 2 plugs, the front port is by the bottom large bolt on the water pump and between the oil pump, the back port is right above the rear main plate on the intake side. If anyone knows where they can be sourced it would be very helpful! My last option is to have a machine shop lathe me up two plugs but if they sell them it would make it easier. Thanks! __________________

08-20-2014, 07:21 PM	#1171
smellslikerubber Join Date: Jan 2014 Location: St.Louis Age: 28 Posts: 24 Trader Rating: (0) Feedback Score: 0 reviews	also looking on other opions on where to go with the car from here? as far as motor work. what are good upgrades to start with? i want to get a good strong running motor before i go and try to drift the car. if that is what i decided to do with it

08-25-2014, 09:09 PM	#1173
smellslikerubber Join Date: Jan 2014 Location: St.Louis Age: 28 Posts: 24 Trader Rating: (0) Feedback Score: 0 reviews	i have a walboro 255 now. everything else in the fuel sytem is stock. oem injectors. i wanna make somewhere around 400hp when the car is done

09-05-2014, 11:24 AM	#1175
lamgee Join Date: Aug 2014 Location: Planet Earth Posts: 18 Trader Rating: (0) Feedback Score: 0 reviews	rb20det stock I want to replace the top intake manifold with side intake manifold and to put fmic with short piping runs just like rb26 setup. Can you guys tell me who makes quality intake and fmic?

09-10-2014, 09:57 PM	#1177
fearlessKouki Zilvia Member Join Date: Oct 2010 Location: Ohio Age: 30 Posts: 278 Trader Rating: (2) Feedback Score: 2 reviews	No sell it and get a rb25 ecu!

09-11-2014, 08:45 AM	#1179
fearlessKouki Zilvia Member Join Date: Oct 2010 Location: Ohio Age: 30 Posts: 278 Trader Rating: (2) Feedback Score: 2 reviews	I meant get the rb20 ecu.

09-16-2014, 03:21 PM	#1180
terrance john Leaky Injector Join Date: Dec 2013 Location: ga. Age: 25 Posts: 51 Trader Rating: (0) Feedback Score: 0 reviews	can someone take a picture of a rb20 tranny and show me where the speed sensor is -.- im such a noob when it comes to this.

09-22-2014, 02:47 PM	#1183
terrance john Leaky Injector Join Date: Dec 2013 Location: ga. Age: 25 Posts: 51 Trader Rating: (0) Feedback Score: 0 reviews	alright guys im going for 400hp ( yes ive read up) i just bought a holset hx35w turbo, question is does it bolt up to the stock manifold? also what type of 750 cc injectors should i run? and i am getting a z32 maf and a safc tuning setup. anything else i would need?

09-23-2014, 11:48 PM	#1189
terrance john Leaky Injector Join Date: Dec 2013 Location: ga. Age: 25 Posts: 51 Trader Rating: (0) Feedback Score: 0 reviews	Where can I get a t3 spacer from? And I might honestly upgrade to a rb25 Sent from my iPhone using Tapatalk

10-19-2014, 04:21 PM	#1194
seagrasser Zilvia Member Join Date: Nov 2011 Location: Lynnwood WA Age: 46 Posts: 256 Trader Rating: (2) Feedback Score: 2 reviews	Found an old post that might help. Otherwise wait for those more experienced than me. http://zilvia.net/f/showthread.php?t=259011 __________________ S14 RB25

10-30-2014, 09:38 AM	#1195
redline racer510 Zilvia FREAK! Join Date: Dec 2007 Location: EARFF(earth for you idiots) Posts: 1,072 Trader Rating: (1) Feedback Score: 1 reviews	Anyone have any experience with hx35 and r.s. Enthalpy tune? I have his tune for my stock setup plus no maf and it runs good, but anyone with major upgrades and his rom tune? __________________ WARNING: User has a low tolerance for stupidity. Post at your own risk.

01-05-2015, 01:07 AM	#1196
Beijing_Raccoon Leaky Injector Join Date: Dec 2014 Location: 29 Palms Posts: 80 Trader Rating: (2) Feedback Score: 2 reviews	Hey guys I'm going with an RB20 swap soon, and I have a couple of questions. Is there a difference between using an R32 crossmember vs aftermarket mounts like the mckinney mounts? I've heard with the mckinney mounts I need to make room for the starter. Secondly, with a wiring specialties harness I'll be using the RB20DET ECU or the Stock automatic ECU my s13 came with?

01-22-2015, 07:09 PM	#1197
fearlessKouki Zilvia Member Join Date: Oct 2010 Location: Ohio Age: 30 Posts: 278 Trader Rating: (2) Feedback Score: 2 reviews	RB25DET I have strange idle surge problem that comes and goes. I have noticed that it will start to surge when i turn on the wipers. It was worse before but after cleaning the Idle control valve it has gotten better. It is totally random, also in order to stop the surging i would have to rev the motor a little until it no longer surges. Really annoying. Any guesses?

01-24-2015, 07:58 PM	#1198
turbronegro Zilvia Junkie Join Date: Sep 2012 Location: SoCal Age: 32 Posts: 325 Trader Rating: (0) Feedback Score: 0 reviews	How much are RB25's with a 5speed going for these days?

01-24-2015, 10:28 PM	#1199
seagrasser Zilvia Member Join Date: Nov 2011 Location: Lynnwood WA Age: 46 Posts: 256 Trader Rating: (2) Feedback Score: 2 reviews	about $2k plus or minus __________________ S14 RB25

01-25-2015, 08:49 AM	#1200
smoked240 Zilvia FREAK! Join Date: Jun 2010 Location: North Dakota Age: 30 Posts: 1,066 Trader Rating: (4) Feedback Score: 4 reviews	I paid about $2500 with mount kit and 1-piece driveshaft from zero lift. That was about 6 years ago. __________________

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