which rb to choose???

[Jdubruner89]

Hello guys, I'm a newbie here haha.. I jus recently purchased a 96 240sx and I'm looking to drop nd rb in it, now when I was looking at some Japanese engine depots, I saw they had a few different ones. I saw one that I haven't seen before but looks like a good engine to swap.. It's an rb25det hr34 er34 neo6??? Can someone help me out with some info on this? Please give me some opinions on which Rb I should do and what all I need.

Thanks for the help.


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Plan to spend about 4-5k on your swap if you want it done right. Not including cost of get it put in. You can get some of that money back when you sell your stock motor. I have a RB25 series I in my car. The Neo motors come from the R34 GTS-T. The difference between these and mine is the coilpacks on the Neo's have built in igniters. Plus the Neo's do not have the crappy ceramic wheel in the turbo. Meaning you can't go over 12lbs of boost without blowing your turbo. Whether you decide series I or II remember to change your oil pump, water pump and timing belt before you drop it in. If you can do the gaskets. RB's are pricey to work on but if you do it all of at once it will save you the headache later. Good luck.

[ch1873857]

wow. thats it? thats all you got moco?

Ive got a neo. yes it does have built in coilpacks but so does the s2. Rumors say that it has a slightly stronger bottom end and the oil pump issues were nearly wiped out by 2000 in the er34s meaning they have the full sized crank snouts. The neo Head is were the more noticable differences are. Solid lifters from the factory, better head flow and the cam specs are much different which is why neos are thought to have a slightly different sound than older. I would know. I dont have stock cams. other differences are obviously a slightly better turbo. r34 electronics are completely different. ECUs, Cam angle sensors, again, coils. The transmissions are a pull type disengagement. I picked up mind for 1300 without trans with splitfire coilpacks. The deals are out there and if you can snag one, do it. Newer motor, revised components. Im definitely happy.

[fliprayzin240sx]

^^^Only kicker why I didnt go Neo is parts availability. S1 and S2 have alot more aftermarket support over the Neo. I absolutely hate the over the engine intake manifold.

[ch1873857]

yeah me too. and yes your right. standalones etc etc. i put a greddy intake manifold, an s2 IACV and some rx7 550 injectors with a JGY rail. the manifolds fit if your willing to redo your fuel setup. once that was done, a lot of s1 s2 stuff bolted on and worked.

[fliprayzin240sx]

yeah me too. and yes your right. standalones etc etc. i put a greddy intake manifold, an s2 IACV and some rx7 550 injectors with a JGY rail. the manifolds fit if your willing to redo your fuel setup. once that was done, a lot of s1 s2 stuff bolted on and worked.

I thought the intake manifold flange pattern is different? I know the fuel system is different since S1/S2 is still side feed while the Neo's are top fed.

[ch1873857]

negative. perfect match. the IACVs are different. greddy manifolds are made to fit either rb25 sidefeed or rb20/26 top feed. there are two sets of bolt patterns for fuel rails. the neo uses some weird new denso style and doesnt match up at all. finding the right o rings was the most challenging part. standard honda top feeds are what you need though. i dont A LOT of research before i went down that road. if you dont believe me its in my build thread. haha

[ch1873857]

http://i1150.photobucket.com/albums/o605/Casenator90/20120525_192727.jpg

with rx7 injectors, top mount setup

http://i1150.photobucket.com/albums/o605/Casenator90/20120401_085530.jpg

with s2 side feed setup

[Jdubruner89]

Thanks guys for your inputs.. Yea im here on jersey nd theres a depot in North Jersey that's sells an rb25det hr34 er34 neo6 for 1300 long block.. And if I do get this I will be sure jus to replace what I can while it's out.. Also it still bolts up to the stocks trans or do I have to buy a different one?


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[ch1873857]

Any rb trans


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[[email protected]]

http://zilvia.net/f/engine-tech/90376-rb-faq.html

Z32 trans with RB25 bell housing and some work will work too.

RB25 Trans Mated with Z32 Trans (http://www.rbz32.com/viewtopic.php?f=2&t=57)

[BlewByYou]

http://zilvia.net/f/engine-tech/90376-rb-faq.html

Z32 trans with RB25 bell housing and some work will work too.

RB25 Trans Mated with Z32 Trans (http://www.rbz32.com/viewtopic.php?f=2&t=57)

Yes but, diff driveshaft will be needed as well as a shifter!



I thought the intake manifold flange pattern is different? I know the fuel system is different since S1/S2 is still side feed while the Neo's are top fed.

Neo has Rb26 internals, Solid lifters, bigger lift cams as well as rb26 cfm head flow. Same motor but has vvt and one turbo. I've seen 600whp on stock block neo's.. rb25 500whp easy with the right bolt on's and management system.

[ch1873857]

if a neo had rb26 internals. it would be an rb26. the rods and crank are interchangable but the pistons are completely different.

[BlewByYou]

ok better words, it has the strength of an rb26 for half the cost :p

[fullthrottle]

if a neo had rb26 internals. it would be an rb26. the rods and crank are interchangable but the pistons are completely different.

Yep. How could it have the same internals but different displacement. Although I thought it was the rods are different? If you look at rb26 rods they are a lot thicker near the piston compared to rb25. I've owned both.motors I should really know this

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[BlewByYou]

The Neo has RB26 rods and N1 oil pump, solid lifters, plus longer inlet manifold runners (for better midrange torque) and VTC, it makes it better in many ways than the RB26 and the missing 100cc

The NEO is listed factory at 280ps (276hp), which is the same as the factory listing of the GTR, but that really doesn't mean anything, because the figures were all listed so they wouldn't be higher then 280, even though the output is.


^Straight from the guys that build 1000+hp Rb's on a daily base....

[ch1873857]

do you own a neo? the rods are thicker than standard 25, like the 26. its the pistons that are different. come to think of it i think the rods are the only thing that is the same. because if you install the crank and pistons you get 26 displacement.

n1 pump. false. they only came of rb26 N1s

and sorry i'll take ITBs over longer runners any day. who honestly needs 1000hp. its a pipe dream and you talk like you are an ignorant 16 year old.

you believe everything people tell you right?

[BlewByYou]

I Dont believe anything less i see it with my own eye's. Those were just statements.
Nowhere i said the crank. RB26 RODS, sorry if you took internals to a new level lol..

Of course anyone would take an rb26 :) but the peps choice the rb neo bc its cheaper and some buy them and not even knowing there neo's.

I have a rb25, Neo, and rb26.

[BlewByYou]

do you own a neo? the rods are thicker than standard 25, like the 26. its the pistons that are different. come to think of it i think the rods are the only thing that is the same. because if you install the crank and pistons you get 26 displacement.

n1 pump. false. they only came of rb26 N1s

and sorry i'll take ITBs over longer runners any day. who honestly needs 1000hp. its a pipe dream and you talk like you are an ignorant 16 year old.

you believe everything people tell you right?

lol and your a car guy? Who wouldn't want more power?!

[ch1873857]

ok daigo.

sorry. i like usable power. i want the amount of power that makes a well balanced car.

[BlewByYou]

ok daigo.

sorry. i like usable power. i want the amount of power that makes a well balanced car.

I totally agree with you there, there is a limit but not just in drifting terms.. People use these for drag and time attack too :ughd: Some think more power im faster than anyone on the track, But it comes down to suspension setup, and a very experienced driver, etc..

[MADE]

With Apexi making PFC's again I'd get the NEO and grab an ECU, if that's the one you want. I wasn't aware the Greddy mani fitted, there is a company that specializes in RB's here in Japan and they sell a NEO specific IM as well as a Non NEO. After you get INJ you'll have all the harder to find or limited selection stuff. BTW $1300 is a deal.

[trickey1991]

Buy a RB25 , throw a 5858 on it. bam 500whp . and be done with it

[Croustibat]

Seriously guys, the only reason japanese and europeans are using these engines is:
A/ the car was sold with it
B/ we cant throw a V8 in it as there are none.

You live in V8 country, dont waste your time on these unreliable engines ... get a big V8, job done. It will cost less to swap, less to run, and will be more reliable for the same kind of power ... i'll exchange my tuned CA18DET against an ls7 anytime ....

[slideslidegnarslide]

I don't get why every one says they are unreliable? They were in stock cars that run for over 100k miles. It's all in how you build it.

[ch1873857]

Seriously guys, the only reason japanese and europeans are using these engines is:
A/ the car was sold with it
B/ we cant throw a V8 in it as there are none.

You live in V8 country, dont waste your time on these unreliable engines ... get a big V8, job done. It will cost less to swap, less to run, and will be more reliable for the same kind of power ... i'll exchange my tuned CA18DET against an ls7 anytime ....

You are by far the most ignorant mother fucker ive seen on here in awhile. Nothing you said is remotely factual. Your an idiot.

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[Croustibat]

You are by far the most ignorant mother fucker ive seen on here in awhile. Nothing you said is remotely factual. Your an idiot.

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And you are going to chill out in "ban land" for quite some time i think.

[ST34LthyN1NJ4]

Seriously guys, the only reason japanese and europeans are using these engines is:
A/ the car was sold with it
B/ we cant throw a V8 in it as there are none.

You live in V8 country, dont waste your time on these unreliable engines ... get a big V8, job done. It will cost less to swap, less to run, and will be more reliable for the same kind of power ... i'll exchange my tuned CA18DET against an ls7 anytime ....

LOL are you high? have you seen the price of a full ls swap .... not a LS7 a ls1 swap there is no way its cheaper than a rb swap and not to mention i would rather run a rb20 than a ca18det any day of the week and that is saying something... if you actually take the time to do a quality swap with any engine it will run just fine, you get what you put into it what the hell do you expect out of an engine thats been sitting in a storage yard for years and you just straight up drop it in sorry it doesnt work like that and of course its going to have problems.

[Croustibat]

LOL are you high? have you seen the price of a full ls swap .... not a LS7 a ls1 swap there is no way its cheaper than a rb swap and not to mention i would rather run a rb20 than a ca18det any day of the week and that is saying something... if you actually take the time to do a quality swap with any engine it will run just fine, you get what you put into it what the hell do you expect out of an engine thats been sitting in a storage yard for years and you just straight up drop it in sorry it doesnt work like that and of course its going to have problems.

My point exactly. What do you expect from a 20 year old turbo engine coming from another country ?

RB + shipping + various import taxes + rebuild / tuning price + gearbox every now and then... you are saying this costs less than a V8 that would give the same or more HP without being even opened ?
This is not a question to do a quality swap or not, this is a question of HP/L and how stressed an engine can be to stay reliable. Name it what you want, a tuned 2L turbo engine outputting 300/400HP will always be less reliable than an NA 3/4/5L V8 outputting the same.

BTW I have run a ca18det for some years already. Why ? Because that is the engine that comes with the car here. It gets a check / rebuild every 20.000 miles for a mere ~300WHP output, i have already been through 2 gearboxes (3rd one is on its way out too - btw rb20 gearboxes are the same, rb25 are a bit stronger), and i think even an LSx eats less fuel.

Your choices though ... my thought is you guys just want exotic "JDM" engine in your cars. That is not a problem in itself ... just say it. But from a performance / price / reliability point of view, they cant win against the engines that are already available in the US.

[ST34LthyN1NJ4]

My point exactly. What do you expect from a 20 year old turbo engine coming from another country ?

RB + shipping + various import taxes + rebuild / tuning price + gearbox every now and then... you are saying this costs less than a V8 that would give the same or more HP without being even opened ?
This is not a question to do a quality swap or not, this is a question of HP/L and how stressed an engine can be to stay reliable. Name it what you want, a tuned 2L turbo engine outputting 300/400HP will always be less reliable than an NA 3/4/5L V8 outputting the same.

BTW I have run a ca18det for some years already. Why ? Because that is the engine that comes with the car here. It gets a check / rebuild every 20.000 miles for a mere ~300WHP output, i have already been through 2 gearboxes (3rd one is on its way out too - btw rb20 gearboxes are the same, rb25 are a bit stronger), and i think even an LSx eats less fuel.

Your choices though ... my thought is you guys just want exotic "JDM" engine in your cars. That is not a problem in itself ... just say it. But from a performance / price / reliability point of view, they cant win against the engines that are already available in the US.

dont get me wrong lsx is a good motor but youre going to have the same deal with a lsx if its been sitting as well, youre going to have to put some money into it regaurdless unless it was just pulled from a running car. piecing together the swap is a pain in the ass also its like there has been a shortage of t56 trans lately atleast for a decent price . Ever since they figured they could swap the lsx into the s chassis the price for the bastards sky rocketed damn drift taxes you use to be able to grab a t56 from junk yard from for about 200 to 300.... but to answer OPs question for the price and reliability go with a rb25 S2 put the time and effort in doing the swap right the first time save yourself from head aches and ass pains later down the road. now that being said if you can get a lsx swap for a decent price and you know it has no problems i would say go with that. its all personal pref. really do you want a boosted eng. or do you want muscle not saying you cant boost a lsx series eng. but its not cheap either. bottom line is its all down to what you want, people can argue on a forum all day what eng is better but ultimately its what YOU want. also if you dont mind me asking do you have the finances and the technical experience to do a rb engine swap because honestly its not for every one there is nothing wrong with rocking what you can afford :snoop:

EDIT: also look at the FS section to see if you can find anything locally to save on the cost of shipping and tax i paid 2200 for a full rb26 swap with about everything i need to go into a s13 just look around... also have you considered 1jz/2jz

[ST34LthyN1NJ4]

also the plus side to going ls is it would be legal if your state has smog laws like california

[OrangeVirus1]

lol just toss a 4G63 in it witha GT45R and call it a day

[s13mikesr20]

Rb30 block stillen stroker kit(3.2 or 3.4 stroker Rb 25 head giant turbo dump 1000+ horse power

Only motor I think chuck Norris approves

Just a thought

If I had money to dump into a swap id build that

[OrangeVirus1]

Chuck norris approves the 4g63 the toughest 4 cyl in the world

[s13mikesr20]

Can't say its not the strongest but subject is on the six cylinders

[OrangeVirus1]

then get the most tried and true 6 cyl ever. 2JZ

[s13mikesr20]

3.4 strocker will rape a 2j

Except for cost 2j is cheaper

[OrangeVirus1]

inorder the even get a 3.4L stroker, you have to get parts from all over the globe.. not even worth it

[ch1873857]

And you are going to chill out in "ban land" for quite some time i think.

Hahahahaha ok tell that to the last 12 years worth of blasting dumbass fools on this forum. Its called house cleaning.. Blow me frenchy

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[OrangeVirus1]

Hahahahaha ok tell that to the last 12 years worth of blasting dumbass fools on this forum. Its called house cleaning.. Blow me frenchy

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if you are referring to yourself as being here for 12 years, you should go back to school. ( look at your join date )

[ch1873857]

if you are referring to yourself as being here for 12 years, you should go back to school. ( look at your join date )


With this forum..

Happy now?


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[OrangeVirus1]

With this forum..

Happy now?


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no. not at all...........

[s13mikesr20]

inorder the even get a 3.4L stroker, you have to get parts from all over the globe.. not even worth it

How many people have a Rb34?

I think its unique but ur right prepare to learn many languages

Or talk to some mad Australian folks the will build a fucking freak motor for ya

And it will make your chariot do pulls of epic magnitudes or do burn outs of untold smoke

[Croustibat]

Hahahahaha ok tell that to the last 12 years worth of blasting dumbass fools on this forum. Its called house cleaning.. Blow me frenchy

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Quoting this too for future mod reference. dont worry, you will get what you deserve :picardfp:

[ch1873857]

Quoting this too for future mod reference. dont worry, you will get what you deserve :picardfp:

Your seriously bent out of shape because i called you an idiot ? Pathetic..

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[Croustibat]

Your seriously bent out of shape because i called you an idiot ? Pathetic..

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Quoted again for the same reason.

I dont know, some people do piss me off easily, but you ... you make it so obvious that it does not. What are you ? Kingtal0n boyfriend ? You sure have a similar writing style. Anyway, your post was again flagged as innapropriate, insulting and off topic. Grow up man.

[ST34LthyN1NJ4]

Quote:

Originally Posted by ch1873857

Your seriously bent out of shape because i called you an idiot ? Pathetic..

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Quoted again for the same reason.

I dont know, some people do piss me off easily, but you ... you make it so obvious that it does not. What are you ? Kingtal0n boyfriend ? You sure have a similar writing style. Anyway, your post was again flagged as innapropriate, insulting and off topic. Grow up man.

Jesus will you two just fuck already damn.... Any ways fuck a 3.4 that would be insanely expensive shit at that point i would just source a tb48de Dubai slap a turbo on it and be done with it... Tb48de is hands down the best I-6





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[ch1873857]

I had planned on leaving this lsx - ca18 - rb argument alone but so you know why I am getting on your ass I will explain.

(1) No one cares about your CA18.
(2) This was a discussion about the differences between the different model year RB25 motors. Not CA, NOT LSx. Not your grand pappies SBC..
(3) You are from France. Please explain to me what you know about the value of our currency, our import tax laws, and standard market prices. I picked up my rb25 neo motorset for 1800 cash. From a legit importer.
(4) Your thoughts about Americans wanting "exotic" JDM motors is completely off the wall. Glad you threw that in there. Most of those type bought SR20s. No need to further explain that one..
(5) RB motors are no less reliable than your CA.. or an LS motor. Its all about how you build and take care of them.. Trust me, Ive seen more blown up LS motors than I have RB..

I'm glad you gave your opinions. Most of which should have never made it to this thread. If you didnt have anything to say about the original topic you should have kept your mouth shut. Do you see what happened after your post? MORE idiots come in talking about 4G63s and RB34s... You turned a good thread into forum garbage. You killed the discussion the moment you brought up a different motor. I'm not just a punk on here. I've been on here for a long time. I do contribute to this forum as much as I can and have never had a problem with any of the mods. The moment you treat them like mommy and daddy and run to them for everything before fighting your own battles, is the moment you look like a 12 year old boy with sand in his vagina. So.. I will be more than willing to have a conversation with any of the mods about this. So far I haven't seen anything. They should however close this thread since its officially dead..

[Croustibat]

You dont give a dime about opinions, you just wanted to insult people, which you did one more time. Not only did you insult me, but you also insulted other posters with that one.

Considering it is the 4th time i make a call to mods and you still go unpunished, i wonder who you are sleeping with to be allowed to do this, really.

BTW the time you have been on here has nothing to do with being a punk - and you said it yourself, dont put the blame on me again.

[collegekid]

Thanks guys for your inputs.. Yea im here on jersey nd theres a depot in North Jersey that's sells an rb25det hr34 er34 neo6 for 1300 long block.. And if I do get this I will be sure jus to replace what I can while it's out.. Also it still bolts up to the stocks trans or do I have to buy a different one?


Are you talking about Jdm engine Depot and JDM engine zone? I've thought about going to them but looking at reviews it looks like a lot of people get screwed by Jdm Engine Depot.

The honda guys love JDM engine ZONE

But I would just research what to look for in a Junkyard motor (that is what it really is) and check each place out in person. They are only like 1 hour away from each other I think.



EDIT: also look at the FS section to see if you can find anything locally to save on the cost of shipping and tax i paid 2200 for a full rb26 swap with about everything i need to go into a s13 just look around... also have you considered 1jz/2jz

Jesus christ a full rb26 for 2200 is a pretty sweet deal.






As far as swaps op

Rb20- my opinion is that there seems to be not as much aftermarket for these guys. Any GOOD parts place will be able to get you stuff but I think the intake manis were very expensive compared to other rb series.
I would suggest this one if you know what you would be using as far as parts and you know what the hell you are doing (meaning you know where to get parts and how to build motors and tune them)

25- this is the pretty standard choice for most people

S1 and S2 is what most people get. Just read up on each and see what deals you can find. The neo6 is good to, you can't really go wrong with either just shop around for deals I guess

rb26 if you have money to spend on a baller ass swap


1j and 2jz is good too. It's a little easier to find people to tune the jz motors around the tri state area (my opinion)

supra forums is a good place to find parts (like a us spec head etc)

Even the 1uz is good if you can find some sc400 whatever in junkyards (i did find some) people buy those long blocks for under 1,000 so thats a plus. You can use the ka trans on that. a couple people get them running for under 2 grand if they kno what they are doing.



Just make some spreadsheets on the motor swaps you like and price everything out. Keep 1000-1500 on the side for an "Oh shit" fund

[ch1873857]

You dont give a dime about opinions, you just wanted to insult people, which you did one more time. Not only did you insult me, but you also insulted other posters with that one.

Considering it is the 4th time i make a call to mods and you still go unpunished, i wonder who you are sleeping with to be allowed to do this, really.

BTW the time you have been on here has nothing to do with being a punk - and you said it yourself, dont put the blame on me again.

Your the only one crying about it. :ugh:

if a mod had to "punish" every user that insulted someone on here, they would never stop working.. Ive insulted my own friends worse that calling them an idiot.. if the word idiot is that bad then i really am sorry your that sensitive. i dont come here to insult people.. there are much worse trolls on this board for that. wheres ixifxi when you need him.. if you want to keep going at this you can PM. arguing with you is like arguing with my 4 year old nephew.. thats not an insult. thats a fact.. go on. "call" the mods.

[Croustibat]

Whatever ... you just are a nickname on the internet, one that will soon be blocked. I pity the people that have to cope with you though :(

[fliprayzin240sx]

My point exactly. What do you expect from a 20 year old turbo engine coming from another country ?

RB + shipping + various import taxes + rebuild / tuning price + gearbox every now and then... you are saying this costs less than a V8 that would give the same or more HP without being even opened ?
This is not a question to do a quality swap or not, this is a question of HP/L and how stressed an engine can be to stay reliable. Name it what you want, a tuned 2L turbo engine outputting 300/400HP will always be less reliable than an NA 3/4/5L V8 outputting the same.

BTW I have run a ca18det for some years already. Why ? Because that is the engine that comes with the car here. It gets a check / rebuild every 20.000 miles for a mere ~300WHP output, i have already been through 2 gearboxes (3rd one is on its way out too - btw rb20 gearboxes are the same, rb25 are a bit stronger), and i think even an LSx eats less fuel.

Your choices though ... my thought is you guys just want exotic "JDM" engine in your cars. That is not a problem in itself ... just say it. But from a performance / price / reliability point of view, they cant win against the engines that are already available in the US.

LSx swap isnt exactly cheap. LS1 motorsets still go for more than what you can get an RB25. It's the same amount of work (roughly) to swap them both in. Had a buddy track everything he spent on his LS swap, and he came up to a tad bit over $9k, while he did most of the job himself.