RB30 Q&A

Discuss the RB20, RB25 and RB26 series engines.
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Chaos the Xile
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RB30 Q&A

Postby Chaos the Xile » Wed Jul 26, 2006 6:31 pm

Ok, I may be getting another RB25 Head, and had some questions or maybe someone can point me there.

I know you can use a Rb25 or Rb26 head on the Rb30 bottomend. I also know that you can use the Power FC as the engine management for that bottomend you just get the version for whatever head (being Rb25/26). What I really what to know is:

1. Transmission: RB25 i'd take it? But wasn't sure 100% And if there were any modifications that needed to be made to make it fit.

2. Mounting: Do you just get like a Top Hats Kit for the 25/or 26 to mount the motor in lets say a S13 chassis?

3. Wiring: Are there any underlaying issues with just using a RB25/S13 harness with the PWR FC RB30 combo? Or Do I need to get a new harnees fab'd?

Just some thoughts, cause I know the RB30 is gonna be big one day and just want to get a few things straight. Thanx


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a 1g terror
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Re: RB30 Q&A (Chaos the Xile)

Postby a 1g terror » Wed Jul 26, 2006 8:06 pm

everything you would need to know here.

http://www.skylinesaustralia.com/

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Chaos the Xile
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Re: RB30 Q&A (a 1g terror)

Postby Chaos the Xile » Wed Jul 26, 2006 8:29 pm

right b4 you posted this i was searching, and found a 199 page thread on Rb30's on skylines austrailia! wow i have some reading to do!Check it out!

http://www.skylinesaustralia.c...15420

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a 1g terror
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Re: RB30 Q&A (Chaos the Xile)

Postby a 1g terror » Wed Jul 26, 2006 8:33 pm

yeah i know about that thread. I had my heart set on a rb30 at one point in time. but finding a way to get a rb30 block to the US is the problem.. I just cant justafi spending a couple grand on a 150 dollar block.

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Chaos the Xile
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Re: RB30 Q&A (a 1g terror)

Postby Chaos the Xile » Thu Jul 27, 2006 7:20 am

yeah I feel the same way, and the way these guys talk, like they have them lying around like a D-Series Honda motor and nobody wants them.... One guy said he couldn't sell his for $200 so it's just sitting in his garage. I check ebay.au occasioanally and see what RB30 stuff they have. I still might buy one just to try it out.

REDLN
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Postby REDLN » Thu Jul 27, 2006 7:22 am

i don't think the mount kits it will fit it in. the block is taller then the others. so hood clearance should be a little problem. and a rb25 will bolt up to a rb30 noproblem. ask eric at e&e motorsports he is doing one. I'm going to make some mounts for mine to go in a s14. the wiring is the same just need the rb25 loom and your s13 loom and good to go.

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Re: (REDLN)

Postby 98birdls1 » Thu Jul 27, 2006 7:45 am

The RB25DE head fits no problem. The RB25DET head does not fit very well as it needs an external oil feed for the VVT. Most use the DE head and add a turbo kit.

Its not as easy you guys make it sound but good luck.

Luke

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Postby gawdzilla » Thu Jul 27, 2006 7:48 am

the only reason to do this frankenstein motor is b/c you want big power and the extra displacement. in that case, buy a 2jz. you will save money and theres plenty more stateside r&d in making the 2jz go fast. 1jz tranny > rb25 tranny, and 2jz > rb30. fits easier too.

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Re: (gawdzilla)

Postby Imissmyturbo » Thu Jul 27, 2006 9:36 am

Hmm...1jz tranny > RB25? I don't know about that. I know of some 1jz trannys that have failed with less then 500whp. They may be = to each other. But I agree with doing a 2jz over an RB30 setup. Unless you have nissan in your blood and don't like basterd cars.

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Postby norikumiin » Thu Jul 27, 2006 10:19 am

thread jack: does the RB30 gain the extra .4 liters from bore or stroke or both? /threadjack

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Postby BoostFab » Thu Jul 27, 2006 3:09 pm

i have a complete rb25de motor, and a bare head, with cams, low mile, excellent condition and perfect for the rb30det conversion. email me if interested. the motor is ready to run, or take the head off and directly fit on the rb30 block. talk about torque monster (2jzgte equivalent)

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Chaos the Xile
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Re: (BoostsFed)

Postby Chaos the Xile » Thu Jul 27, 2006 6:11 pm

Well to that 2JZ thing... ummm no. Thats what the RB26 or RB30 are for! To put that 2JZ under the floorboards. You all are Nissan Fans for a reason. And it's just wrong to put a 2JZ in a 240SX, no matter how you slice the bread. If you do that I'm putting a F22A from a S2000 in mine, lol just to be a d!ck. C'mon, if you are gonna do the 2JZ swap just a few more $$ and you could do a RB30! Plus its 1,000,000 times cooler to have a RB30 in a S13/S14 chassis!~

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Re: (Chaos the Xile)

Postby tecnic1 » Fri Jul 28, 2006 4:00 am

+1..I would put an SR in my car before I put any non nissan motors includeing ls1, jz, pratt and whitney turbofan, ect.

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Postby DanCouga » Fri Jul 28, 2006 4:57 am

Trust me, if you have even second guessed going with the RB30, don't do it. If I had to do it over again, I would probably try building a VQ hybrid over the RB hybrid. It is incredibly difficult to source parts, or atleast it has been for me. Of course that could come from the fact that I am building a RB30/26 hybrid.

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Chaos the Xile
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Re: (DanCouga)

Postby Chaos the Xile » Fri Jul 28, 2006 5:28 am

See if you want part you need to connect with someone on the Skylines Australia or Skylines Downunder Forums. There are tons and I mean Tons of people that have RB30E Blocks sitting in their garages collecting dust. The only problem is convincing them to sell you the block for dirty cheap AND have it shipped here. And the reason you are haveing so much of a problem is because of the type of head you are using. RB25DET (VVT) head and RB26DETT Heads are mort difficult to fit to the RB30 block, you should have gotten a RB25DE (non-VVT) and it's like a direct bolt on. Those are all over ebay australia and rinkya. So it dependds on your patients when it comes to this project, just think of how kick-*** this car would be once finished!

DanCouga
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Postby DanCouga » Fri Jul 28, 2006 5:40 am

I already have the RB30E block. I have it stripped down and waiting to ship it off to have it hot tanked, shot peened, resurfaced, honed, head stud holes enlarged, etc. But that doesn't do me too much good as I can't get my hands on the top half of a 26

I think I might just go back to my original idea and buy a whole 26 and then make a SOHC 2.6 liter AWD go-kart so I can justify all of these extra parts.

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Postby BoostFab » Fri Jul 28, 2006 10:17 am

turning a rb26 into sohc rb26..?!?! are you smoking... *cough*stupid*cough*

these kind of thread make me scratching head & giggles!?!

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Chaos the Xile
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Re: (BoostsFed)

Postby Chaos the Xile » Sat Jul 29, 2006 5:21 am

BoostsFed wrote:turning a rb26 into sohc rb26..?!?! are you smoking... *cough*stupid*cough*

these kind of thread make me scratching head & giggles!?!
HAHA me too I'm aiming a tomahawk cruise missile at it now

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ISL33P
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Postby ISL33P » Sat Jul 29, 2006 11:41 am

people, if you have ever had or do have problems sourcing parts for the rb30, let me know. i a maffaliated with a large parts wholesaler over here and i have access to plenty of parts at my fingertips.

i am actually picking up a block for free today, that is how easy they come about.

as for the questions.tranny will fit without a problem and harness has nothing to do with block except detonation sensor which the na rb30's don't have but the turbo rb30's do. i think they are the same as rb20/25/26 sensors, so its just a matter of taking your out and putting in the one you already have to the rb30.

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ISL33P
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Postby ISL33P » Sat Jul 29, 2006 11:43 am

ps i think this thread should be sticky.

nice easy title that would come up in a search and everyone can ask anything here.

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Chaos the Xile
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Re: (ISL33P)

Postby Chaos the Xile » Sun Jul 30, 2006 5:52 am

I agree on a sticky! This is the only RB30 Thread as far as I can see. And thanks for the heads up on part outsourcing.

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Stealth-Z
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Re: (Chaos the Xile)

Postby Stealth-Z » Sun Jul 30, 2006 7:00 am

Is there even enough interest in the RB30 to justify a sticky? Not many will stomach the shipping expense of the block in the first place.

It is not even included in the RB20DET vs RB25DET vs RB26DETT FAQ

Everyone thinks of it more of a novelty here in the U.S.

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Re: (Stealth-Z)

Postby Chaos the Xile » Sun Jul 30, 2006 8:03 am

Yeah, but think of it this way. If you look at the timeline of things, Honda, one of the first tuner cars is now the most common, ppl want to get more power and drift too now-a-days. Enter Nissan 240SX, RWD platform cheap and tons of swaps and bolt-ons to make it yours. The SR20, getting as common to the Nismo boys as the B-Seies block to Honda guys. So we move on RB20/25 and a fist full of RB26's eventually the chain is going to end somewhere and ppl are gonna want something different, VQ35, Titan V-8. Skyline Hybrid? C'mon a 3liter Skyline motor that will eat a Supra for breakfast! Eventually it will happen and fall into the chain like the rest, just wait and see! MAKE IT STICKY PLZ

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Re: (Chaos the Xile)

Postby Stealth-Z » Sun Jul 30, 2006 9:26 am

I agree with what you say. My RB30/26 build has been in the works for 2 years now. Everything is at the machine shop being balanced at this moment. Once it is complete I will share info about the build to anyone insterested.

Now I just have to get the Z together that it will be going into.

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Re: (Stealth-Z)

Postby Chaos the Xile » Sun Jul 30, 2006 5:48 pm

sweet, i wanna know more on it when u get it back.

REDLN
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Re: (Stealth-Z)

Postby REDLN » Mon Jul 31, 2006 8:19 am

i wanna see your 26/30 when you get it back. my mate just picked up another block for my 26/30 build that i've been working on for almost 4 years now. could you tell me who you had ship it to you (company). how much was it? i would like a rb30 sticky. how many of us on here are doing rb30's?

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Re: (REDLN)

Postby Chaos the Xile » Mon Jul 31, 2006 8:35 am

I will soon I just got a non-vvt RB25DE head, soon as I get the RB30 block we're in business! STICKY!!!!! C'Mon Kamin

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Re: (REDLN)

Postby Stealth-Z » Mon Jul 31, 2006 9:53 am

zerothread?id=91111At the bottom of this old thread I wrote out the expenses of who got what in terms of shipping.

This was my first time dealing with shipping a block. Since then I have learned quite a bit about the world of cargo shipping. You pay multiple shipping charges. Even if someone in Australia were to give you a block, multiple people are going to make money off the shipment.


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Re: (Stealth-Z)

Postby REDLN » Mon Jul 31, 2006 12:59 pm

yo thanks for that tid bit of info on shipping. man i'm in north carolina so my shipping will be more. my build right now is just a basic build. i'm just looking for a rb25 tranny to buy after this get's here.

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Re: (REDLN)

Postby Stealth-Z » Mon Jul 31, 2006 1:36 pm

It may not be more expensive shipping to the East Coast. I am sure container ships go direct from Australia to East Coast ports. There are alot of JDM importers in your area. I cannot picture them shipping containers cross country for their goods.


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