Lithium

Cummins are typically Holset, which are also a good option. BW also seen on fun things like Porsche, Indy cars etc.

Perhaps ignoring my suggestion which is cheaper, will spool similar, make more power, looks bigger, sounds epic, and is from an OEM manufacturer whose proven performance and reliability history makes Kando by comparison look like a virtually unheard of knock off outfit. Oh hang on...

Nice - what did you reach? How does it feel with the 6262 on the higher boost level? How is response etc?

There is a twin turbo V8 S14 time attack car (using a 1UZFE - a bit like putting an RB25 in a Supra, but meh) using twin GTX3067R in the build at the moment in Oz apparently. That could be interesting.

Borg Warner S300SX 83-75 with .88a/r twin scroll hotside. Not that expensive a turbo in the grand scheme, look enormous, sound huge (think T51R-whistle), but will be making boost and whistling about it in the 3000rpm range and if you have your hoof in it at 4000+rpm things will start getting silly. It is more comparable with a GT3582R in terms of power/spool so it won't be a dyno queen - but at the same time make enough power to get in a LOT of trouble. Hope that helps! http://www.full-race.com/store/turbos/borgwarner-airwerks/borgwarner-s300sx-83-75-turbo.html

Just over 1000whp on a Dynojet with a PT6766 on E98. I know of other cars making equivalent or more actual power but their runs have been done on lower reading Mustang dynos so the magic 1000jp number never appeared. Even though thus wouldn't do it all dynos it is hellishly good power for the size turbo :

Awesome! How is spool?

Awesome! How is spool?

I specifically outlined when I mentioned that the trap speeds were low that the dyno doesn't always represent how a car will drive on the road, and that there could be other things at play. One way or another, the way these cars are going down the strip aren't representative of what you'd expect with that power level delivered in the manner an RB25 should be expected to be able to deliver it.

Awesome! Good luck, been really looking forward to hearing how this setup works

"Dyno can't hold the power" = third world problems of car modifying. Nice work

Ahh cool, good to know - I had partly based that number off what SAU people insisted when comparing hub dynos and otherwise but have been starting to get suspicious after seeing trap speeds of cars run on DD being much closer to cars with similar Dynapack numbers (ie, my own) but had used that partly because of avoiding angsty Aussies complaining about inflated numbers Keen to hear the results anyway, especially when you nudge the boost up!

+1 actually, I've been treating the difference between these two as ~11% (so 600hp @ hubs = 534whp/399rwkw) so will be interesting to see how close this is.

I think you underestimate the 73HTA, I doubt that compressor will be the weakest link in your setup

What fuel? If on E85 then the Precision PT6466 seems to be the man for shooting in that area - basically every result I've seen for that turbo have been exceptional "for what it is". PT6766 CEA will do it and with a bit of change and a bit more lag, Forced Performance GT3794HTA is not a Precision turbo but I reckon from what I've seen makes me think they have a compressor map more suited to RBs (and 2JZs) - a little wider flow in the 30-40psi boost range (the Precisions definitely need more boost to make these power levels), and they sound awesome. A SLIGHT (ie 100 or so rpm) bit more lag than the two Precision turbos though.

Awesome, looking forward to the results! This will be on E85?

35psi - people who don't follow these turbos very closely may get quite a shock. Killer setup, sir.

Only if it is taken fairly easily, how hard will it be pushed? That turbo I reckon would be good for 600rwkw on this kind of engine if pushed hard.

Awesome, keen to hear results! That is going to make some serious power...

Late next week is good news to me, I had assumed it was going to be a while before you got back to it Would be awesome to see what the overall finished product comes out like when its done

Ohhh I didn't know it might be that soon, I must have sensed the (hopefully) impending awesome. Lith likes this :-)

I was pretty confident that the RB26 would do it, and suspect the RB25 should be good for it too - though certainly will be interesting to know how it all comes out. It'll probably never happen to mine now (it was semi-on the cards when this thread started - hence the quick response), so would be good to enjoy vicariously!

I was trolling around and found this thread - until seeing this I couldn't specifically remember when I had recommended the HTA3076 as I normally have that kind of convo in PM and I'd never found it.... this would be why I didn't remember it, you had asked about a setup for an RB26 Fast forward a year, the project turned into an R33 GTS25t with an RB25 in it but the same power/spool target and you took the plunge on the HTA3076 - looking forward to final results, but do you know if it hit the 20psi by 4000rpm rpm target yet?

There is a reason I was asking about the 16G, not 18G...but thanks :-D I would pon the 16G and GT28R as fairly similar

It's a copy - I should have been more specific, do they have boost control issues with the internal wastegate setup? I am sure in essence the TD05-16G will offer the performance we'd be looking for if the boost does what we want it to.