Lithium

But on the actual topic - it seems to need to be updated: http://www.youtube.com/watch?v=AlOjkLsAOUI Madness.

What? You can hardly compare the two - if you are going to draw any comparison, it's pretty cool to think that people would even compare a high dollar full tube frame stroker diesel blocked sequential drag box RB32DET drag car with something which was a project to build something as quick as possible for as little as possible money, as opposed to try to get a world record. It just happened to work well: http://www.gtr.co.uk/forum/106386-7s-170mph-20k-using-stock-internals-build-diary-poll.html It used an auto, the chassis was a front engined dragster which was never built to go that quick, and had a fairly basic (considering the times) engine package. The fact that the first 6s RB was built essentially on a budget is kindof awesome, naturally being a dragster that is a clear advantage in that respect - and clearly is how it was possible to go that quick without spending mega$$$,, but deciding to conclude that its the best RIPS could do throwing everything can think of at it is not exactly unbiased thinking. I'm sure with a bigger budget you'd see bigger things

Argh people really need to mention power targets when saying they want a turbo suggestion. What are your targets? If you are going for 35psi for drags I am assuming a lot, and you're going to need to run E85/C16/Q16/something which can handle the associated pressure. Please clarify

Naw chucks, you give me too much credit - as I also suspect you give yourself too much credit in regards to what you can tell about someone you have never met! I was merely suggesting that there maybe slightly better products available designed in the last 5 years than those designed 20 years ago - not that I know anything better than the ones that designed those products. Anyway, back to this build - I am ultra keen to see how it comes together... what is next?

This was discussed a page or so ago, no - all the information is not recorded on one graph. To some degree plotting where the engines expected VE against a compressor map is the easiest part of choosing a suitable turbo, if you are going to try and make the most of the whole setup. It is clearly a very important part, too - but there are plenty of serious variables to consider beyond that map which will play huge parts in terms of how well it will work. Using the logic that the compressor map has everything you need to be concerned with, and using a turbine housing with a restrictive throat is a good way of making it responsive - a GT2876R with a 0.48a/r turbine housing could be argued to be a perfect bolt on turbo for RB25s yet for some reason that isn't the case

Love it!! Nice work

Possibly poorly worded on my behalf - sorry! The main reason I was focussing on that is that it's a pretty big part of the picture when you are talking a turbo which has a 6% bigger inducer area and 20% bigger exducer area on the compressor before you even begin to look at how effective the wheels are "pound for pound" as it where. When you are just using exhaust gases to push that mass to >100,000rpm it makes way more difference to how it drives than you may give it credit for. The aerodynamics etc will have a bigger effect on the possible boost thresholds than the inertia will, but I'm talking about real world stuff - not static loading or controlled sweeps on a dyno. Anyway sorry Bobby, if this is going too far off topic for your discussion here I'll leave it till I catch up in Oz next month

Did you see where I wrote 'and other things....'? I just pointed specifically at inertia because the other things could be more subjective when comparing two turbos.

Sortof, but bushier

If there is no increase in power on a turbo car then something is wrong. If the tuner is telling you that the heads ability to flow air is fine for pump gas but not E85 then consider my eye brow raised

Awesome, looking forward to seeing the results - has potential to be pretty mighty!

What do you mean? I haven't experienced one, if that's what you mean? I would expect it to be laggier than the stock EVO turbo, which I am sure isn't a surprise. Maybe like a bigger version of what you have on your car? What power are you after if you upgraded?

The more interesting people and things I can meet and learn about the better, I am going to be in Sydney for a week leading up to WTAC next month - might have to try and swing past JEM sometime. None of us have all the answers, so always interesting to share experience where willing - I'm certainly always open minded to new ideas... as at this stage I can't see how you can't associate spool with inertia (and other things relating to turbo design), considering turbo shaft rpm comes from a mass being accelerated and that mass is drawing and pumping air - the better it is at moving air versus the amount of energy it has available to move it, the better it is going to perform overall... I would have thought. But yes, if there is an opportunity to discuss it when I am over, I'd love to... one of my favourite topics

Are you making 270kw on the stock turbo? If so, niiiiice.

Lol - I know the car now, it's running a Precision 7175... quite a far cry from 6266, I was wondering how on earth a 6266 would make 865whp - as well as be that laggy on a 3.2.

The EFR7670 won't make -5s power, just be closer than -9s to it. A 7670 won't make 600whp, even on E85 (unless it's a more generous dyno than people here are used to). Those numbers will rely on fuel as well. Same goes for EFR8374 - 700+whp only on E85.

If he gets a HTA red it will be a totally different turbo to what you were talking about though, which is more my point.

Flow wise yes, lag wise no

FP Red HTA will not respond like stock, but nothing like what GTScotT suggests

Why the :-(?

There are RB25s with that kind of power, don't know of any specifically on SAU off hand. JEM will be tuning one soon which I am expecting will make that power with change in the next few days... most people just go to RB30, which is what I was going to do - or may still do.

FP Red HTA and MAP EF3 are both very very proven. If the results are not what he expected he either expected too much, chose the wrong weapon for the job, or something needs sorting with the setup - if not a combination of the three. The old red was less of a special thing (like a journal bearing TD06/T60-1 type hybrid iirc) and doughy response is no surprise. The new HTA Red is basically 34GeeTeeTee's compressor rammed together into a DBB package suited for bolting onto an EVO

Awesome to hear, can't wait to see that thing in the flesh next month

I don't know if it's the full range, still little info on it at the moment... I am prying however, naturally You should check out the MAP EF3 if you are doing a bolt on, they are pretty mental.

Of course - I agree, however it will not happen as badly as with the -9s which it is being compared with, and are very popular