Steve

Not that frame of mind at all, but please do give an example. You say pushrods have many decades of R&D behind them, but yet you also say a DOHC engine is older than a pushrod - so your point is totally mute. the latest thing on the market - dude, do you acutally know when the RB26 was first put on the street - certainly caused a few eyebrows to be raised at mount panorama in the early 90's - over a decade ago. Perhaps you are of the mind 'oh its been around for so many years it must be good' I dont believe that pushrods are all bad, just that they are behind the times - just because you were brought up on it and told pushrods are the shit doesnt make it true - all I am saying is look at what is around and get over the whole 'cubes and pushrods' it really is so passe. this sort of attitude kept cars off the street back during the turn of the century - dont be a technophobe, embrace technology and try and do things smarter. Same sort of thing with fuel injection and carbies - so many people scared of them - keep saying that you could get a 10 second car with a carby - yes, all true, but that doesnt mean its the best way to do things does it? Bottom line is that this thread was about what to do with a V6, and while it is possible to turn it into a fire breathing beast at what cost. Do you really think it would be easier to put an RB30DET in and produce 300+ kw at the treads, or try and get the stock V6 (90rwkw) performance up to that level? Even the RB30E stock made better power than that - 16 years ago.

there are alot of assumptions there - and you know what they say about assumption. I agree, horses for courses. Who assumes GM engineers are idiots? You are the first person to imply it directly or indrectly. If pushrods are such a wonderful thing, why arent they being used more? Wouldnt everyone be using them. GM and Lotus built a 5.7L 405hp (close to 300kw) DOCH engine - and how much did that cost compared to say a small block chev at the time? Or even today? I do believe economics comes into the equasion - just like the reason I have been told (yes it is hearsay, but it until I uncover evidence otherwise, I'm sticking with it) that GM replace the RB30 with a buick V6 predominately because it is so much cheaper to produce/source. Would it not be reasonable to believe that this could be the case with V8 engines too? Another thing you have to consider is that in society stigmas get attached to certain things. A guy a work told me once that he would prefer to own any v8 than any other engine. Australia has followed the US with a stigma of big is best - why do you think ford reintroduced the V8 - consumer demand. Consumers werent demanding more powerful 6 cylinders, no, they wanted v8s - end of story - the tradition of big V8s and cheap petrol still lives on. And as you say Roy, horses for courses. But they are still dinosaurs. How can you compare an engine that has millions of R&D thrown into it, produces more power with less cubes and say 'but no, my unaltered design, gas guzzling pushrod isnt a dinosaur' Xeron, you are trying to tell me that the OHC engines of 20 years ago is still alive and well today, just to be picky, they have changed a bit since then. Let me explain a bit further. I still remeber pulling down my first V8 back in 1985 - it was a 302 windsor out of an XY (1971) sedan. this is probably before some people reading this forum were born. And ford still put them in mustangs only a couple of years ago. Sure they had been 'developed' but basically the same design. Can you give me one example of a 20 year old twin overhead cam 6 cylinder engine that is basically the same design as say, and RB25?

Thinks I saw in a HPI article (or Zoom) where they said that the car has to be on the road, ie public place for a defect to be issued. Might have to check back issues.

Dude, that sounds mighty suspiscious to me. Boost pusing vavles open WTF? I dont think it would be necessary to get 2k worth done - thats just over the top. Have they given you a cost break down? Lastly, if anybody told me that they would check the results AFTER the work was done I would run a mile in the other direction. If they cant tell you up front what sort of flow they expect, and what it will cost to produce those results I just wouldnt touch them - and get it in writing.

Dude, nothing wrong with that, asl long as the coppers dont see it you'll be right.

I see what you mean about the fresh air, but really I dont think it helps the crank case, probably just helps thin the fumes when they enter the plenum. Postitive Crankcase Ventilation does not require vacuum from the plenum, nor fresh air from the intake - it is purely the removal of the gases from the crankcase. They go out all on their own due to the pressure of more gas entering the crankcase every time a cylinder fires. If you want a system that works like stock with filtration under boost, and stock type recirculation whilst at light throttle - just fit a catch can - thats what they do. I just dont understand the point you are making, it sounds to me like you are trying to re-invent the wheel:)

xeron, I dont think anybody doubts that pushrod engines can make huge horsepower - but, be realistic, they are dinosaurs - very old technology, thats all I was getting at anyways. As for rego, holden borrowed a 3L from Nissan a few years back (just before they decided to go back to dinosaour pushrods..hehehe), so I cant see how it would be a problem if you are putting a 'holden' engine in a holden?

Where does the clean air come from? PCV is to remove the blow by from the crank case, so it only takes the air (burnt gases from the pistons) out of the crank case that shouldnt be there, not put fresh air in there. As I explained in previous posts, before emissions laws, PCV just went to the rocker cover and then to atmo throught the oil filler cap, at no stage was the vacuum in the plenum used to clear the gasses, but it did have a one way valve so that air could flow from the crank case to the rocker cover only - thus I believe where the word positive comes from in PCV. Recirulating these gasses can in no way actually be good for combustion or perfromance, I am sure that companies these days wouldnt plumb these potenially harmful (to the turbo/intercooler/combustion process) back unless only to appease the greenies/govt of this world. The idea of putting all these gases through some sort of filtration before returning it for combustion, has merit IMHO.

Have a look here http://www.skylinesaustralia.com/forums/sh...&threadid=13003 there is a sticky about building your own partition. Well worth while, and easy to do - mine cost less than $20 in materials.

Hmm, and there is a air bleed screw on the AAC vavle too.

Adjustable cam gear on exhaust would help too.

Sorry to hear that Munro, thats really f#cked up - if there was only a way to get around these dick heads - perhas HPI should get a national campaign going to lobby the bloody pollies and get them to lay bloody off - this is just big brother going too far - everybody looses. Nightcrawler, I am a bit supersticious too, already came tooo close to coming unstuck this morning - note to self warm tyres thoroughly - but beers and eight ball sounds interesting:)

Magna is NA - if you plumb the rocker cover to the air filter, you would be getting forced blow by - the same stuff that gets caught in the catch can:) When I am talking about old cars, I mean the pre emission, eg pre 74 ish?

Million dollar question:) Depends on alot of things, capacity of your engine, manifold design, head design, cams, timing etc not to mention turbine AR ratio, wheel trim, exhaust back pressure - and probably a dozen plus other things. The compressor map only shows what the compressor is capable of doing at certain speeds. As Sydneykid alluded to, careful selection of turbine etc. This is why I am leaning toward a small turbine housing to start with. The other thing you could do is look at what other people are running, and taking into account all of the above - make an educated guesstamate - then be prepared to change a few things once its on if its not quite what you were expecting or after. EDIT: why do you think that performance companies like to keep their specs so secret? You are going to be up for a bit of R&D - and the more research, the less likely to need developement!

I believe the JMS R33 used an apexi rx6 turbo - there is a comparison between it and a TD06 in one of the performance mags - both fitted to the jms R33. From memory the rx6 had better midrange, but less top end. MattR has a TD06 on his R32 - it does go hard.

Greg the car goes in on wednesday fingers crossed. DennisRB30, on casual look, it appears that the plenum could draw air from the breather? Belly_up, the only problem would be the number of filter elements you would go through - and that the AFM might get dirty. In days of old, cars just had the pcv going into the rocker cover and was vented to atmosphere through the oil filler cap, with ony a vague attempt at filtration. The pcv just stops the crank case from being pressurised by blow by. Without it it would cause all sorts of problems from blowing out dipsticks to possibly blowing seals. I dont believe it would be essential to have the gasses go through the plenum - it appears more an attempt at emmissions control to me? Would love to know more about this, because if by blocking off the pcv to the plenum and forcing the gasses though the catch can, it would still comply with emissions criteria. If that means improved economy all the better. I really cant see a downside to this approach. Anyone?

So the LS1 engine will just bolt straigth up, nothing else required, wouldnt have to upgrade suspension or brakes? Plus there is the staggering economy from a LS1, and in stock form, they have huge output. This is a nissan forum, why would you go and put in a dinosaur engine that burns huge amounts of oil, has crappy fuel economy, and doesnt generate huge hp (althought torque is a different matter). Then you still have all the added expense of just about every thing else needing to be changed, new exhaust, suspension and brakes gearbox blah blah. I really dont think its all that logical.

grepin, how did BOOSTD block his hose off?

Maxx, I agree that if everybody did it, the business would go bust, but sounds like you will be doing similar? If you get things in for people and they are happy - all is good, please dont think I am trying to stop you from making a few dollars and provide a service for people, although it would be a good idea to be careful how you sell your services, as I am sure there are businesses out there that wont appreciate someone doing some freelance. It would be different if you were just trying to 'help out fellow forum members' than going into a business of your own I just wanted to point out that originally your post sounded misleading - in my eyes anyways - and I thought for anybody thinking of using your services that they should be well aware of both sides:) (thanks for your help as well nightcrawler). The offer in the last post sounds very fair that IF you get slugged by customs, THEN you will pay GST - couldnt get fairer than that:D Makes for a very good offer, ideal if people are worried about duty and tax. Once again good luck with the enterprise. Enrico, how the govt gets around it is that the first 15% is Duty, therefore on paper its not a tax, very handy use of semantics to further their own cause. Duties are designed to enable competition by the local market in theory.

I see what your saying and it is always a risk. Good to be able to make an informed choice. I did get a whole brand new HKS 3037 turbo through (retails with GCG for $5880), it got opened and inspected - not hard to work out that it is worth more than a couple of hundred dollars. On the declaration for my injectors it also had the price being 1000, but still nothing even though they opened. I just think you would have to be really really unlucky to be hit - unless you try and bring in quantity of course thats a different matter. Honestly, your chances are that small, that I will order the stuff and only charge 5% - I am that confident Were those cams for the RB20/25 or SR20, cos the 4 cylinder ones are a bit cheaper - now is definately a good time to buy with the yen being so weak:)

I got a brand new HKS turbo - customs didnt touch it. HKS CAMP customs didnt touch it. HKS wastegate customs didnt touch it. Fuel pressure regulator customs didnt touch it. Trust shift knob customs didnt touch it. I have never heard from anyone that they imported something for personal use and were hit duty or gst - car parts anyways. The only time something I ordered wasnt opened by customs is when it came from NZ Have you ever been hit duty or gst on anything from your Mum? Yes they check, but how often do they actually charge? My main point is that you say in your first post that 'when you purchase from them ....you have to pay 25%'. This is totally misleading and in fact totally wrong you should be saying you MAY pay 25% from them but you WILL pay 12.5% from me. I just think it is wrong to mislead people to profit from them.

Less than 5K

Looks perdy, that inducer is a bit on the small side though - do you know what size it is? What has made you lean toward this particular turbo out of interest?

I am having trouble understanding what the incentive to buy off you instead of greenline is. I just imported injectors no gst, no duty, you would charge an extra 12.5% - is that right?

Dumb copper??? Sounds like a top bloke, maybe he was just checking you out by asking the questions matt? If he was a dumb copper I think he wouldnt even have bothered with the tape measure, just defected you anyway:) To give you a lisence for your mods - thats GOLD. Especially on your car:p Where did this happen - might just have to loiter by the road until the same plod comes along to give one of them:D