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Everything posted by Lithium
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[Closed] Borg Warner Efr Series Turbos
Lithium replied to Lithium's topic in Engines & Forced Induction
Pretty pleased I didn't get caught in the moment and order one like I felt mighty close to doing back in around Feb, I really really like the idea of them but regardless of how hard BW have tried and how good the intent is - this isn't good from a consumer point of view. Absolutely nothing against Full-Race, or Borg Warner... seems like this is a nightmare for all involved but again from the point of view of smart buying there is no way in hell I'd recommend anyone an EFR now, the delays and reliability are well and truly below what I'd call acceptable - especially when talking something this expensive that has still yet to give results that separate themselves from anything else on the market. -
Sorry, perhaps I should have qualified that with internally gated, ra ra ra GT3071R? I had in my head the typical basic GT3071Rs tend to be between 250-270kw range with full boost around 3500rpm, I've never seen anything to hint they'd be anywhere near getting full boost under 3000rpm! Unless you are running 6psi....
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Nice work - glad that went smoothly, nice stout amount of power... definitely not a normal GT3071R Tbh without any prompting I'd have thought it was a GT3076R dyno plot, but dyno plot doesn't tell the whole story - after you've had some time to get acquianted it'll be interesting to see how you find it. Out of interest, with that 11blade wheel does the GTX3071R have the same kind of anti-surge whistle craziness the GT3076Rs do?
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Sweet! Good luck
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When do you get full boost in higher gears? I've been really interested in the difference in overall performance between a GTX3071R and a GT3076R
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OK- was wondering what you'd refer to as Simon has made 410kw on a Dynapack, which read similar to the Dynojets. DD read LOWER than most, doesn't make them more accurate - but it helps to know which scale you are talking on. Given 700-750whp on a Dyno Dynamics and 800-850hp on a Dynojet/Dynapack (difference isn't really quite THAT much, but for sake of discussion we'll roll with that) mean pretty much the same thing to all of us, thats an epic result from a turbo that size!
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Out of curiousity, what do you think of Simon's T67 results?
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/ sums up the fact you might need to open your mind a little? Turbos have been pushed beyond their ratings for fricken ages, the rating isn't some magical number when suddenly the power stops growing past that point regardless of what fuel, boost, or extra charging (ie, NOS) you throw at it... its just a number based on a few assumptions to give a rough indication of how it fits on a scale. The video I put up on this thread of a street EVO running an 8s run was using a PT6262 to make over 700whp, which if was a happy dyno result wouldn't have been doing 8s with full interior I suspect. A PT6266 is the higher flowing upgrade over the old PT6265, which is the size up from what the 8s EVO is running. Hearing 800+whp on a modded 3.4litre running 29psi doesn't shock me tbh.
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Most RBs I've done tuning have idled fine at around 14:1, including my own BEFORE putting in the Nismos. I played around with idle control speed to make it idle at similar rpm with aircon on or off and managed to keep it within the same zone and still, I'd get a lean miss at anything leaner than 13.5:1 and steady smooth idle with aircon on even up to 14.7. From memory I set my mates idle afrs to around 14:1 when he got the Nismos and I believe it idles pretty good with that.
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Thats really really interesting, I had Nismo 555cc yellow side feeds on my GTS25t and I had exactly the same idle issues, right down to the A/C. With A/C on the car would idle perfectly with around stoich AFRs but when A/C turned off (once the car was warmed up) it would lean miss even with AFRs even richer than .95λ. I'd put that to the fact that I was using a G1 GTS Link ECU which didn't support sequential injection and the lean miss was just due to poor fuel distribution, and when I sold the injectors on to GotRice? and set them up with his G4 Link we never had any issues So sorry, thats not really a good answer beyond the fact I've seen similar behaviour - good luck sorting it out and let us know what you find!
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Whoa... methanol. OK!
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Nice, what fuel?
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Crd Built +1000Hp India Skyline R33
Lithium replied to CRD's topic in Motorsport Discussion & Builds
^ + 1000,000,000! -
I actually give the Yanks a lot more credit than your typical Oz/Kiwi folks in terms of researching and choosing turbo choices based on sensible thought instead of fad - I don't know when this 70% of US drag cars using Master Power turbos came from, I'd have guessed they'd be predominantly Precision/Garrett/Borg Warner 2 years ago and argueably most years before then too. Picking an equivalent boost level won't necessarily give a fair representation, if the GT35R has more flow in it (ie, the flow of the SR20 is the power restricting factor) expecting a PT6262 to make more power could be futile.
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Actually, there is plenty of data around the world of Precision turbos giving good pump gas results and epic race gas results. Anyone reasonable and/or or with half a clue will realise they can make the numbers... I know I've probably linked this in the thread before, but . On the harshest dyno Oz has to offer, thats going to be making lots and lots of killerwhats.I am by no means saying this because I have a preference for Precision turbos either, I just hate seeing some of the inaccurate bollux spouted here - if anything I prefer ForcedPerformance's efforts at the equivalent turbos. There are a few good options out there. Lots of trolls here, I hardly bother unless I'm bored these days.
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^ Pretty sure my Garrett GT3076R had a GT3037 ID somewhere on it when I bought it, can't remember if it was on the box or the CHRA - but I found it interesting nonetheless.
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^ A lot of people don't seem to understand that often when dyno results rely on lots of boost to make numbers its often the engine/boltons combination which isn't up to it, as opposed to the turbo itself... though the element of truth to the likes of PT6262s "needing lots of boost" is that they do come into their own at really high boost levels, naturally using a decent fuel to help the engine stay happy at those boost levels. Hypothetically speaking, if a GT35R could hit 450kw on E85 and a PT6262 hit 500kw on the same engine with E85 - both on 2+bar of boost, wouldn't mean that if you ran both turbos on pump gas using 20psi you'd make 10+% more power with the PT6262.... more likely you'd make about the same.
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[Closed] Borg Warner Efr Series Turbos
Lithium replied to Lithium's topic in Engines & Forced Induction
I admire your patience, to be honest! Almost a year has gone by -
Gt35R Or Precision 6265 Ballbearing?
Lithium replied to hkssam's topic in Engines & Forced Induction
Some of these guys are running 160mph+ in street cars man... -
Place your bets? I semi-expect a graph that would be instinguishable from an equivalent GT3076R, but would like to see a slightly better all around result
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Sounds like they are both wins then, the S300SX in the pics I posted was from boostlab
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Have a look at boostlab
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Nice, good luck - look forward to hearing the results
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400kw on E85 should be easily doable with a S300SX 83/75, even through an auto imho. If you're not shy on boost and setup on E85, then depending on the dyno I'd say well more than 400kw should be doable. If you're "only" going for cracking tens with an auto Soarer and willing to go 30+psi on E85, I'd lean towards the S300SX... once you start going larger building boost against the trans might start becoming a challenge, unless you are going to use NOS.
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How much power are you guys after??? 360+kw should be well doable with the S300SX 83/75 with a good responsive and wide powerband, I'd thought that'd be sufficient for most people.