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Lithium

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Everything posted by Lithium

  1. The Tials don't perform really any different to the normal housings, they are just easier to work with, lighter and prettier so the results specifically for a Tial housing turbo aren't too relevant. A good friend of mine upgraded from a 1.06 GT3082R to a .82a/r GT3582R after feeling the lag didn't justify the end result and ended up with the same or better power EVERYWHERE, which to me indicates going to 1.06 on a GT30 is a waste of time if a GT35 can spool comparably and seems to in effect allow more efficient pumping overall. Obviously not perfectly relating to a GTX3071R, but I at least feel that if you need more than a .82a/r GT30 turbine flow then you're really stretching it with a GT30 to the point its really the wrong size for you and its eventually going to wear out its welcome. If I were running a 3.5litre V6 there is no doubt I'd be looking at a twin scroll T4 based GT35 (or equivalent) based turbo. I don't know what the people you are talking about are doing to their GT3582Rs, the only guy I know who has broken one (incidentally the same dude who upgraded from the GT3082R) did so after running ~28psi at track days over an extended period of time.... and it damaged itself after trying to maintain that boost level with what he later discovered to be a split plenum.
  2. The 1.06 will be a waste of time though imho, if you are going that big you may as well go up to a GT35 based howside with a smaller a/r turbine housing... they seem to drive nicer imho.
  3. So you have gone from a GT3076R 56T to a 52T one, everything else the same? And if so, why? Will you have before/after graphs for whatever you have done?
  4. Awesome, good luck - keen to hear results! (and dyno vids ) Do you have dyno plots from the old GT3582R for comparisons sake?
  5. Didnt forget it at all, I basically said something was clearly up and figured that people reading the post would know exactly what I was referring to by looking at the plot. Don't know if its a dodgy tune, or something is up with the motor or what - there are various possibilities... hence not being specific I am sure it could do better than that, though I had hoped the GTX3071R was going to be the most likely unit to prove its worth from the get go however remain unsold on the GTX turbos.
  6. I'd take that one with a grain of salt, something in that setup is potentially a bit dicky I suspect. Looks too laggy, even though GTX turbos seem to be laggier than the GT counterparts. Hope the owner joins the convo and gives more info.
  7. Awesome, looking forward to hearing how it goes
  8. Has it got bigger cams? On E85 I'd have thought >500whp on E85 would be a piece of piss anyway... a stock RB30/RB25 head wouldn't really gain much without some head fettling. On the flipside, with some big cams and that turbo - 20psi will justify the turbo but 600+whp would probably be the order of the day haha.
  9. OK, so to be helpful here - have you actually found any limitation with the Link? It sounds like you aren't using it to its capabilities as it is... I would normally recommend people move from things like Nistune/PowerFC etc to a Link if they want to get more motorsport orientated. If you are building a serious race car and need all the datalogging/control/whatever you can think of then really a MoTEC is the only thing I can think of which will be worth changing your setup for, and will have good support in Oz.
  10. Nice! And doing that, how does it feel compared to the GT35R? Most importantly, does it has a sweet antisurge whistle?
  11. Maybe slight gains up high if you go to a bigger a/r housing than the single entry one, big the real tangible gains are midrange and coming up onto boost - bearing in mind thats for a given boost level, so because it spools faster as well the perceived spool and response will usually be better than what the boost curve would imply... if that makes sense?
  12. Thats not too surprising then, I'd have expected the 3788R to be a few hundred RPM laggier all things being equal, and a good twin scroll manifold drags things down a few hundred rpm (also tend to help low down/ midrange torque quite a bit too - on top of boost threshold). This is one of the reasons I've considered a twin scroll GT3582R as an upgrade over my single entry GT3076R, I've said before I have a strong suspicion it'd result in a similar drive in terms of building boost but with the ability for more power pretty much everywhere. It will be interestingt to hear the power results and more importantly, how it drives - could be brutal
  13. Thats only if you overcam it for the setup, most "street" Kelfords boost midrange and top end with no noticeable loss of downlow. I think the Plazmaman manifolds seem to rely on big bites of air being taken by the engine, even stock RB25/Rb26s loose some in the lower flow areas with these kinds of manifolds. Is the volume/runner size the same for the RB20s as the RB25/26s? I'd consider using a manifold like what RIPS make which use the stock runners but with a bigger plenum volume to try and drag things back into parity with the standard "bites". I wouldn't have thought the 6boost manifold would cost anything in response, I know of people who have gone GReddy to 6boost and gained everywhere. Thats my feeling anyway, could be complete BS - but unless I was intending on building an RB20 to rev way beyond the normal RPM range I'd centre my attention on the mid/top end area.
  14. Is that including going from a single entry GT3582R to a twin scroll GT3788R? They've been around for quite a while, I think I gave up on looking for results for them over a year ago - so if there have been a bunch in the last year - that explains that. Looking forward to seeing the final tune results for this!
  15. Very interesting to hear about the GT3788Rs being that good, I had wondered (thinking the GT40 turbine was a bit overkill on the GT4088R for a "small" motor")... Look forward to hearing the final results, sounds promising! Wonder why those turbos aren't more popular, they've been around a while now.
  16. Look forward to seeing the results - good luck
  17. I only would use the 18G as a base for a compound turbo setup
  18. Seeing as this is a Kando thread, a TD06-18G + TD07 compound setup would be monsterous
  19. I'd go out on a limb here and say the first person to do a good twin scroll GTX3071R on an RB25DET will become superman until the next best thing comes along.
  20. Make up your mind, you often chastise 56trim GT3076Rs for 52trim ones - they are barely different in size. If the compressor affects response that little, 52trim GT30Rs are redundant That is all oversimplified anyway, the compressor has a lot of affect on how boost threshold is achieved - loosely speaking the exducer is responsible for accelerating the air, the inducer is responsible for drawing it in. You can actually make a more "responsive" turbo by having a larger sized exducer (fine balance between extra mass and extra "throw" off the tips which is where extended tips come into play). Same goes for Garrett GT series turbines, they are often physically smaller for the equivalent than Mitsi/Borg turbos but they use a less abrupt blade attack angle through the turbine, meaning they are more of a high speed turbo. Lighter, but don't necessarily respond as fast to low speed gases for the equivalent size... so give or take a bit a Garrett GT series turbine would be normally the equivalent in response and flow to a larger say Borg Warner one, for sake of arguement. I could go on for fricken ages, but the gist of what I'm saying is don't assume that all things are comparable just by mm measurements of a pair of wheels on different turbos.
  21. Will be very interesting to see the T67 on an RB30 - what fuel? Should be brutal!! 305rwkw on stock RB25 injectors???!!!! <edit> Spotted fuel pressure - nevermind me. I tuned an R33 running stock injectors and upgraded fuel pump that made 240rwkw the other day and have already had people remark on the stock injectors... maybe its not too shocking a number?
  22. You sre the one questioning it, look it up for yourself... compare the inducer/exducer measurements for the two turbos given by HKS and Garrett for the respective turbos
  23. No they aren't, Scott... run a different compressor wheel which don't come with any of the GT2860 Garrett combos.
  24. ^ Mines GTR runs HKS GT2530s... The Precision turbos are the ones that don't seem to do much without using ethanol or race gas, there are some decent EFR results on pump gas - even at conservative boost levels.
  25. Any unmuffled anti-surge turbo sound more or less like that. EFR9180 would sound similar but better spool and good for that power range.
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