Building A Responsive Rb30det

[bradsm87]

CHEAP - RELIABLE - FAST

You can only have 2.

So true. That's goin on my sig!

[stomper]

I'm not into blowing up engines, I'm into doing things the right way the first time. I mentioned at the start of my thread that I want a reliable engine, and where possible I want to do this bang for buck - blowing up engines seems like a bit of a waste.

gcg highflow is something I haven't heard before though. Just googled it, something about a company transforming the stock turbo so that it can take a good 260rwkw? This sounds like a very good option as the stock turbo is quite small (good for response) and using something existing will bring the costs down. Do you know of the top of your head how much something like this costs, and what they do?

As for controlling power, I don't want to say that I know what it's like because I don't. However I drove my brothers r33 stock gtst on my L's and I could begin to feel the limitations towards the end. stock rb25det's are around 125rwkw stock (correct me if I'm wrong), so that's why I'm saying I'd be happy with 200rwkw. However this is really not what I wanted to focus on, I want response not a kw figure.

Seems like people keep suggesting to stick with the 25 and not bother with the 30. This does make sense in many ways, and it might be what I end up doing. But I'm just wanting to see what other options are available in achieving a rev happy engine.

You can tell I love my rb30's Driving a 31 atm, I just hate the electronics on the thing, the block / mechanical side of it goes hard though.

For my 2 cents being someone that has had both a RB25DET and RB26/30DET in the same R33 GTST, I would suggest that you need to research more.

Its a lame excuse trying to get people's opinions on what you think will do the job, when you clearly have a small understanding about both the mechanics of a powerful engine, and or the process of building one.

I for one am always learning abou the car I have, and I couldn't for one second explain a turbo map, however I have read enough and made enough mistakes to know the difference between a highflow and a stock turbo. If you resolution is to consistently google the next word you don't understand then you are going to get ripped off or end up with something you dont want.

Linking 200 KW and 26/30 in teh same sentence just smaks of no idea!

If you want a quick boosting mid powered engine, stick with the RB25, get a FMIC and a 3076 with 0.82 housing. Upgrade injectors, ECU and fuel rail. Easy 270RWkW and fast as pants.

I have so far invested well over $20K in my 26/30 and I am plagued with a myriad of tiny issues - poor cold start, rich running, and a host of minor engineering challenges. Not to mention, the fact that i now need an uprated clutch ($1000 second hand of a fellow SAU'er), then perhaps the diff will go next, wider wheels/tyres etc. etc. etc.. It really isn't as easy as just lobbing one in and off you go.

But do us all a favour, why not start by building up both your engine/car, experience and knowldege from the ground up; before you become the next "hoon caught by the cops", or run me or my family over while you are trying to work out how to handle 260RWKW in the wet.

There is no short cut to experience!

[GTRNUR]

There is no short cut to experience!

That's the truth alright.

If you were to read everything there was to read regarding 30/26 builds on SAU you still wouldn't be armed with the necessary experience or skills to build one.

Ive lost track of how many times I've heard stories about young lads attempting to build up their cars to do impossible things, only to abandon their projects a year or 2 later. Then unable to put their car back together again, they strip their car and sell it as parts so they can pay of their bank loan and credit cards.

The only bright side to this situation where people bite off more than they can chew (car project wise), is that it keeps the forsale thread on SAU filled with new and used parts that we can pickup cheap.

[_Ryan_]

Want response? Drop an 8 in it, ITBs, and enjoy... i miss my datto

NA= response... turbo = cheaper to increase power.

[Danzzigger]

Get over the idea of having to get a built engine. It's not necessary for under 300rwkw.

Point taken. I think everyone is pretty much pointing towards it not being worth the effort since I want such lower power numbers. The only reason I was wanting this engine was because I thought a sacrifice of power could bring forth a more torque / rev happy engine, and the combination of mods I wanted to do would raise that goal.

fwiw a stock RB20 will rev harder than a 25 or 30... and you can get 200rwkw pretty easily

Yea I know it'll rev harder, won't have the torque / response when cruising that I'm after.

CHEAP - RELIABLE - FAST

You can only have 2.

lol true, I've heard this one before... just which one to sacrifice is the hard question to answer.

I for one am always learning abou the car I have, and I couldn't for one second explain a turbo map, however I have read enough and made enough mistakes to know the difference between a highflow and a stock turbo. If you resolution is to consistently google the next word you don't understand then you are going to get ripped off or end up with something you dont want.

Linking 200 KW and 26/30 in teh same sentence just smaks of no idea!

If you want a quick boosting mid powered engine, stick with the RB25, get a FMIC and a 3076 with 0.82 housing. Upgrade injectors, ECU and fuel rail. Easy 270RWkW and fast as pants.

I have so far invested well over $20K in my 26/30 and I am plagued with a myriad of tiny issues - poor cold start, rich running, and a host of minor engineering challenges. Not to mention, the fact that i now need an uprated clutch ($1000 second hand of a fellow SAU'er), then perhaps the diff will go next, wider wheels/tyres etc. etc. etc.. It really isn't as easy as just lobbing one in and off you go.

Alrighty I can see where your coming from, and I can't deny that I'm googling words a lot

Good to hear this response from someone who owns a rb30det setup. Are you really having so many problems with it? or is it the fact that your going for high power figures?

That's the truth alright.

If you were to read everything there was to read regarding 30/26 builds on SAU you still wouldn't be armed with the necessary experience or skills to build one.

Ive lost track of how many times I've heard stories about young lads attempting to build up their cars to do impossible things, only to abandon their projects a year or 2 later. Then unable to put their car back together again, they strip their car and sell it as parts so they can pay of their bank loan and credit cards.

The only bright side to this situation where people bite off more than they can chew (car project wise), is that it keeps the forsale thread on SAU filled with new and used parts that we can pickup cheap.

This is the reason I was not wanting to go right ahead and build up a 240z, it's a dream... but not achievable at this point in time, I would just screw myself over. Where as I figured if I started with the engine, I could later on transplant it into a 240z later on down the track. And I'd never get a bank loan for a car / modifications, loans are for investments.

Alrighty, everyone is pointing in the direction that it is better to modify the cars stock engine (not sure if it'll be a r33 or r34 yet), over building up an engine for the power figure I'm after. So I'd be stupid to do otherwise.

I want to thank everyone for the time and opinions as it has saved me countless days researching something which in real terms seems pointless.

I'm not sure if anyone still wants to discuss the rb30det revvy engine just for research purposes and throwing ideas around, but obviously the options there.

I want to... actually scrap that... A friend of mine ( ) would like to know what would be the most responsive setup on a rb engine, any rb engine. Would it actually consist of a rb30 setup, or would it be the rb26? Non turbo, single turbo, twin? - Just curiousity

Would buying a GTR be the best approach to getting that response I'm after?

I'm not sure if this is a easy question to answer, or more importantly understand. But which skyline is best setup for response in relation to how much power they have. For instance if the rb25det came from the factory with the same power a GTR has, would it be as responsive? Less? I know it's kind of a stupid question to ask as it's all got to do with the turbo that's behind it and how quickly it spools up. But I'm just trying to understand where I should maybe shift my focus of research towards. Because I still want a responsive car that reacts quickly. I mean if your limited to a 100kph speed limit, how much more power do you really need.

I see it more effective to have a engine that can response really well inside the speed limit without battling with lag.

Anyway I want to thank everyone again that's contributed, I'll take this under my belt and continue with my research in the now narrowed down field.

Cheers

~Danz

[rob82]

Point taken. I think everyone is pretty much pointing towards it not being worth the effort since I want such lower power numbers. The only reason I was wanting this engine was because I thought a sacrifice of power could bring forth a more torque / rev happy engine, and the combination of mods I wanted to do would raise that goal.

Yea I know it'll rev harder, won't have the torque / response when cruising that I'm after.

lol true, I've heard this one before... just which one to sacrifice is the hard question to answer.

Alrighty I can see where your coming from, and I can't deny that I'm googling words a lot

Good to hear this response from someone who owns a rb30det setup. Are you really having so many problems with it? or is it the fact that your going for high power figures?

This is the reason I was not wanting to go right ahead and build up a 240z, it's a dream... but not achievable at this point in time, I would just screw myself over. Where as I figured if I started with the engine, I could later on transplant it into a 240z later on down the track. And I'd never get a bank loan for a car / modifications, loans are for investments.

Alrighty, everyone is pointing in the direction that it is better to modify the cars stock engine (not sure if it'll be a r33 or r34 yet), over building up an engine for the power figure I'm after. So I'd be stupid to do otherwise.

I want to thank everyone for the time and opinions as it has saved me countless days researching something which in real terms seems pointless.

I'm not sure if anyone still wants to discuss the rb30det revvy engine just for research purposes and throwing ideas around, but obviously the options there.

I want to... actually scrap that... A friend of mine ( ) would like to know what would be the most responsive setup on a rb engine, any rb engine. Would it actually consist of a rb30 setup, or would it be the rb26? Non turbo, single turbo, twin? - Just curiousity

Would buying a GTR be the best approach to getting that response I'm after?

I'm not sure if this is a easy question to answer, or more importantly understand. But which skyline is best setup for response in relation to how much power they have. For instance if the rb25det came from the factory with the same power a GTR has, would it be as responsive? Less? I know it's kind of a stupid question to ask as it's all got to do with the turbo that's behind it and how quickly it spools up. But I'm just trying to understand where I should maybe shift my focus of research towards. Because I still want a responsive car that reacts quickly. I mean if your limited to a 100kph speed limit, how much more power do you really need.

I see it more effective to have a engine that can response really well inside the speed limit without battling with lag.

Anyway I want to thank everyone again that's contributed, I'll take this under my belt and continue with my research in the now narrowed down field.

Cheers

~Danz

Hmmmm you could just buy my car. RB30/26DETT 9:1comp ITB twin -5's you wont get better response for the power.

http://www.skylinesaustralia.com/forums/R3...le-t290873.html

[Danzzigger]

Hmmmm you could just buy my car. RB30/26DETT 9:1comp ITB twin -5's you wont get better response for the power.

http://www.skylinesaustralia.com/forums/R3...le-t290873.html

Yeah I actually saw your car, but im still waiting for my full license otherwise it would be definitely considered... Very nice car mate. Good luck with the sale.

[rob82]

One other though I had with this setup was to run variable volume runners by using the ITB with the butterfly cut in half and convert it to a single throttle body setup.

I actually did design some internal trumpets that halved the port diamter but never got them made up, would have been interesting tho.