Searched, Need advice

Post by **JimmyMethod** » Tue Apr 11, 2006 12:45 pm

RB30 swaps... Anyone done them? Anyone have a link to a site that has info on it?

Ozzie!'s got the hook-up in Australia, and I'm trying to decide if this is going to be possible considering it'd be my first swap, although I'd probably have help.

Post by **DanCouga** » Tue Apr 11, 2006 1:23 pm

Which part are you looking for information on? The head swap PDF is floating around with a great amount of detail. The wiring is going to depend on the head.

I am waiting to finish mine, so I will let you know which mounts to use or if you will need to have some fabricated. You will need some low sitting mounts to overcome the additional height and close the hood.

Post by **Valley** » Tue Apr 11, 2006 1:59 pm

you didn't search hard enough :-p

zerothread?id=153294

if you're going to swap a non rb car to an rb, i'd consider swapping in the rb, then after everything is ok, and running well, pull it out and do the rb30. rb25 into an s13 was my first swap. its a steep learning curve.

Post by **JimmyMethod** » Tue Apr 11, 2006 5:04 pm

Valley wrote:if you're going to swap a non rb car to an rb, i'd consider swapping in the rb, then after everything is ok, and running well, pull it out and do the rb30.

I'm sorry, but that didn't make any sense to me...Do you mean, putting in the RB30E, and after everything is running, swapping the heads for the DOHC of the RB25?

EDIT: And I saw that thread, and it didn't have any real info on swapping the RB30 into a S14.

Post by **SeVa-S13** » Tue Apr 11, 2006 6:11 pm

I think he means that getting a stock engine running perfect first helps cut down on trouble-shooting guesswork because you're not dealing with some frankenstein of an engine that very few people know anything about and have real experience with.

Post by **DanCouga** » Wed Apr 12, 2006 2:55 am

Do you want a guide from the beginning to the end? If so, you probably won't find one.

What areas are you worried about?

Post by **JimmyMethod** » Wed Apr 12, 2006 3:45 am

DanCouga wrote:Do you want a guide from the beginning to the end? If so, you probably won't find one.

What areas are you worried about?

Mainly wiring.Is there going to be an issue with mounts?

Post by **FAST-DATSUN** » Wed Apr 12, 2006 4:48 am

Wiring matches the head you chose to use (RB25/RB26) mount same as the head choice. RB25 block adapter and Our RB25 mount kit will work with the RB25 block adapters and the RB25 or Rb26 head set up..., but you can use the RB20 or RB26 block adapters and out mount kits also or another good kit...RB25 head will need the Greddy intake to insure hood clearance...

Post by **JimmyMethod** » Wed Apr 12, 2006 6:28 am

The KA transmission bolts up to all RBs, correct? I won't have to swap with the RB30 block, right?

Post by **SeVa-S13** » Wed Apr 12, 2006 6:38 am

I don't think the KA belhousing will bolt up to any RB. And if you're running an RB30DET, you must be shooting for atleast 800+whp so I don't think a KA transmission would do you much good anyway.

Post by **Joe** » Wed Apr 12, 2006 6:55 am

JimmyMethod wrote:The KA transmission bolts up to all RBs, correct? I won't have to swap with the RB30 block, right?

woha woha woha

the KA transmission bolts up to NO RB engine.

Post by **JimmyMethod** » Wed Apr 12, 2006 8:28 am

SeVa-S13 wrote:I don't think the KA belhousing will bolt up to any RB. And if you're running an RB30DET, you must be shooting for atleast 800+whp so I don't think a KA transmission would do you much good anyway.

No I'm thinking just an RB30DE. 300 hp max.

Kamin wrote:woha woha woha

the KA transmission bolts up to NO RB engine.

Err... Ok... so would it be cheaper to find an RB bellhousing and swap the KA transmission internals, or just get an RB transmission?

Post by **Valley** » Wed Apr 12, 2006 8:48 am

so you're looking at a rb30 block with an rb25de head. i am by no means an expert but from what i have read the rb25de head bolts up to the rb30 block, and if i recall you will have no oil lines to play with since its not a turbo and does not have vtc. as far as wiring, you just to rb25de wiring into and s14.

as for transmission, you will need an rb25 trans. rb30 are supposed to have decent tq, and you will probably shatter anything less on a launch.

just my .02

oh yeah, the thread i posted had all the info in it you needed, it had several links, one was a pdf file for an rb30 hybrid, and the other was to skylines downunder rb30 thread with 150+ pages of info (last time i checked)

Post by **DanCouga** » Fri Apr 14, 2006 5:40 am

You are going to have to get custom extractors(I can say that since we are talking about an Aussie engine) fabbed up. Although you could try getting a set of RB30s and modify them to fit, I probably wouldn't waste my time on that.

And if I were you, which I am, I would get a 1GGZE supercharger and slap it on there. You can find mount kits to attach it to the RB30 block on tradme.co.nz or ebay.com.au.

As far as your 300 horsepower goal. Be looking for new pistons to up compression, since the stock compression is only 9.0:1. You might want to get some new injectors too, I don't know if the DEs have smaller injectors than the DETs.

As for the transmission, I would try just using the RB30 trans.

Post by **JimmyMethod** » Sat Apr 15, 2006 8:34 pm

300 hp is the MAX I'd be running after everything's done. To start with, I'd just do the head swap on to the block and drop it in.

Extractors? Those are a kind of post combustion charger, aren't they? Don't they generally run off the drive shaft and try to create low pressure at the exhaust manifold? Explain...

Post by **DanCouga** » Sat Apr 15, 2006 10:20 pm

Extractors is just another way of saying headers.

Post by **DanCouga** » Thu Apr 27, 2006 5:10 am

so are you going to do it?

Searched, Need advice

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