Jump to content
SAU Community

Recommended Posts

  • Replies 48
  • Created
  • Last Reply

Top Posters In This Topic

Good idea Duncan. Maybe you should post in the intro what people should put in their questions so we can give some answers. Like with Nev above. Sorry to single you out mate but some tosser could start by saying "maybe look in a GMH parts catalogue...." or other worthless crap.

You really need to give us an idea of what you are planning to do with the engine, HP goal, car it goes into, budget etc. From about there we could just about price it up completely and tell if the machine shop is ripping you off.

its ok thanks mate.

what i want to do is jusy like rip it apart get the block cleaned and what ever else i should do u's could help in telling me what i should get done 2 the block.

then what i want is just to like rebuild it with stock new stock pistons and just shot peen the rods and upgrade all the other stuff..

i know that i need like bearings and stuff but like what else will i need to upgarde.

i dont want 2 much power was just thinking like 450hp or something like that.

the motor is going into a 180sx ive lost my licence for 6months and this is something i want to do to it.

umm yer just geting a block when i find one then then im going to pull it apart and just have it cleaned and build it up..

so if any of you's could like suggest what to do and things to get that would be great thanks to every one that can help me out...

450hp is considered not too much now-a-days? :)

Have you ever driven a 450hp car?

- Start with a set of cp pistons and spool rods, i believe Spoolup sells them at a great price

For the price you pay for NEW std pistons and shot-pinned rods, you may as well go for forged items.

Serious question:

Do you plan on using the standard bonnet or are you intending to get one fabricated?

I know the rb26 JUST fits into the bay and some nipping of the std bonnet frame is required to stop it rubbing. An rb30 block sits an inch taller, so you either have to customise engine mounts and cross-member, to lower engine, gearbox, etc. or you somehow get a new bonnet fabricated.

Having lost your license could also mean that you may be in the police "radar" when you get it back, thus being pulled over for "random" checks more often.

Just some things to consider before making the final decision to do such a huge conversion into a 180sx.

Do you plan on using the standard bonnet or are you intending to get one fabricated?

I know the rb26 JUST fits into the bay and some nipping of the std bonnet frame is required to stop it rubbing. An rb30 block sits an inch taller, so you either have to customise engine mounts and cross-member, to lower engine, gearbox, etc. or you somehow get a new bonnet fabricated.

BA XR8 bonnet bulge FTW :)

Findem on ebay in fibreglass

yer ive driving a 450hp car but that was awd gtr but yer lol..

yer i know she will be sitting bonnet will be made up i know theres no chance in getting it shut with the motor yer will get custom mounts and stuff its something that i want 2 do. im just one of them ppl that if they want to do something they will im sure theres a few ppl on here that a like that..

so ur saying forged would be better?

i didnt think getting all stock ones would be to much but it will be something ill have 2 think about..

cops pull me over coz i look 2 young 2 drive but im used 2 it when driving a import..

ive got a few noob qs regarding rb30 conversions (please dont flame me :P )

1. what is block is perferred de or det???

2. what is this vct???

3. are there any major advantages in using a 26 head instead of a 25 if only a mild build???

sorry for the noobness

all answers much apprietiated

Nick033,

The RB30 only comes in E and ET.. hence why people are doing the DET conversion. The RB30E motor is the one you want as it will have a good CR when bolting the DET head on (RB30ET block will cause a low CR).

VCT is variable cam timing.

The 26 head will always be better but the 25 will be fine for a mild build.

  • 2 weeks later...
  • 6 months later...

hey everyone. first of all love the RB30 disscussion. :)

I have an R32 gtst running rb20det with link ecu with map sensor,gtr injectors,and GT400 turbo. 200rwkw. But i want more.!!! :banana:

so ive read all the threads/PDF and decided to go with 25/30 r32 head. Im after 300rwkw.

Just wondering is it a must to get all the rods and pistons balanced along with the crank..???

if i bought spool rods and CP pistons do i still need to get them ballenced..?

will be starting the build soon. any help would be great. Thanks.

hey everyone. first of all love the RB30 disscussion. :)

I have an R32 gtst running rb20det with link ecu with map sensor,gtr injectors,and GT400 turbo. 200rwkw. But i want more.!!! :banana:

so ive read all the threads/PDF and decided to go with 25/30 r32 head. Im after 300rwkw.

Just wondering is it a must to get all the rods and pistons balanced along with the crank..???

if i bought spool rods and CP pistons do i still need to get them ballenced..?

will be starting the build soon. any help would be great. Thanks.

yes and yes - your engine builder can answer that - if your building yourself, speak to your machinist about their recommendations.

hey everyone. first of all love the RB30 disscussion. :)

I have an R32 gtst running rb20det with link ecu with map sensor,gtr injectors,and GT400 turbo. 200rwkw. But i want more.!!! :banana:

so ive read all the threads/PDF and decided to go with 25/30 r32 head. Im after 300rwkw.

Just wondering is it a must to get all the rods and pistons balanced along with the crank..???

if i bought spool rods and CP pistons do i still need to get them ballenced..?

will be starting the build soon. any help would be great. Thanks.

as a few ppl say all the up and down round and round parts should always be balanced. so yes defently the crank and standard rods. however im not 100% sure when using the spool piston rod package, but going out on a limb going to say no, but not to sure, still the crank defenitly. some one else will be able to better answer

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Have a look at that (shitty) pic I posted. You can see AN -4 braided line coming to a -4 to 1/8 BSPT adapter, into a 1/8 BSPT T piece. The Haltech pressure sender is screwed into the long arm of the sender and factory sender (pre your pic) into the T side. You can also see the cable tie holding the whole contraption in place. Is it better than mounting the sender direct to your engine fitting......yes because it removes that vibration as the engine revs out 50 times every lap and that factory sender is pretty big. Is it necessary for you......well I've got no idea, I just don't like something important failing twice so over-engineer it to the moon!
    • Yup. You can get creative and make a sort of "bracket" with cable ties. Put 2 around the sender with a third passing underneath them strapped down against the sender. Then that third one is able to be passed through some hole at right angles to the orientation of the sender. Or some variation on the theme. Yes.... ummm, with caveats? I mean, the sender is BSP and you would likely have AN stuff on the hose, so yes, there would be the adapter you mention. But the block end will either be 1/8 NPT if that thread is still OK in there, or you can drill and tap it out to 1/4 BSP or NPT and use appropriate adapter there. As it stands, your mention of 1/8 BSPT male seems... wrong for the 1/8 NPT female it has to go into. The hose will be better, because even with the bush, the mass of the sender will be "hanging" off a hard threaded connection and will add some stress/strain to that. It might fail in the future. The hose eliminates almost all such risk - but adds in several more threaded connections to leak from! It really should be tapered, but it looks very long in that photo with no taper visible. If you have it in hand you should be able to see if it tapered or not. There technically is no possibility of a mechanical seal with a parallel male in a parallel female, so it is hard to believe that it is parallel male, but weirder things have happened. Maybe it's meant to seat on some surface when screwed in on the original installation? Anyway, at that thread size, parallel in parallel, with tape and goop, will seal just fine.
    • How do you propose I cable tie this: To something securely? Is it really just a case of finding a couple of holes and ziptying it there so it never goes flying or starts dangling around, more or less? Then run a 1/8 BSP Female to [hose adapter of choice?/AN?] and then the opposing fitting at the bush-into-oil-block end? being the hose-into-realistically likely a 1/8 BSPT male) Is this going to provide any real benefit over using a stainless/steel 1/4 to 1/8 BSPT reducing bush? I am making the assumption the OEM sender is BSPT not BSPP/BSP
    • I fashioned a ramp out of a couple of pieces of 140x35 lumber, to get the bumper up slightly, and then one of these is what I use
    • I wouldn't worry about dissimilar metal corrosion, should you just buy/make a steel replacement. There will be thread tape and sealant compound between the metals. The few little spots where they touch each other will be deep inside the joint, unable to get wet. And the alloy block is much much larger than a small steel fitting, so there is plenty of "sacrificial" capacity there. Any bush you put in there will be dissimilar anyway. Either steel or brass. Maybe stainless. All of them are different to the other parts in the chain. But what I said above still applies.
×
×
  • Create New...