Geoff Raicer

iTrader: (7)

1) 660whp@31 psi on a B series - 83/75 1.10 a/r - this is all the turbine and compressor could do.

2) if you havent seen any impressive power, are you looking hard? Here is a 1000whp drag b series honda, that goes consistent 9.4s. 67mm S400SX vs 71mm S400SX



3) the gt40R compressor map is NOT complete!! they did not run it all the way up on the gas stand, so the compressor map appears to flow less. there are efficiency islands that are not completed... its more like a 72lb comp wheel - a 7blade 63mm inducer / 88mm exducer is not small.

as someone i knew over there said "BW moves at the speed of a glacier... maybe glaciers are faster". However when BW makes moves, they change the market. many will disagree with me now. there will be no disagreement in the future.

the 83/75 is definitely similar to the gt35R, but if you want a 35R with more power potential you may want to check out the turbo i am testing tomorrow on my r14 S300P 83/74, and very very different from the 83/75. not one single thing in common

Force-Fed Performance

iTrader: (46)

Exaclty the kind of post i was waiting for Geoff.

Im sure what we have working will def change some things bud. Our 2.1 shortblock is complete and head should be done at the CNC shop soon. Everything is in order and we are just patiently waiting for the right turbo setup. Keep the results coming and we are ready to get on board as soon as you let me know. Still up in the air as to what we spoke about on the billet K29 and the 67mm 400sx. Still thinking we will need something atleast 71mm but I will wait/trust you. we have built this sucker to go to 11k if need be on E85

ScorpionT

iTrader: (1)

Geoff, can you give us a little bit more information on this turbo? Ive seen photos of it and it looks very interesting. I really like the size of it compared with other S300SX models. Looks promising overall.

The billet K29? That wont make 1000hp, more like 875-900.

Geoff Raicer

iTrader: (7)

the billett K29 really isnt an ultra-performer - it just has high flow for a small package. Less efficient than the S300SX/S400SX family - in fact id put money on it that the S400SX 67mm will obliterate the K29 . BW gave us the green light on their 67mm S400SX as a production part we should start seeing them in 1-2 months - going to be really interesting for the drag racers in the 67mm class.. not going to be a spooler tho!

what info would you like to know? The turbo itself has a 61mm inducer an d 83mm exducer compressor and a pretty advanced aero 74mm turbine. The big problem here is turbine housing availability - we cant get the right a/r so have had to do some heavy machining to a CAT hsg in order to make it work. not ideal and way too labor intensive for us, but once i can get over to the dyno later this week i can give you an idea of how it compares. agree with you regarding the k29

Force-Fed Performance

iTrader: (46)

Geoff, sent you another PM. just going to go with your advice in working with us on this build since this will be our first experience with the newer BW products on evos.

ScorpionT

iTrader: (1)

Well, thats the primary info I was looking for. Any idea from BW on other housings to be produced for these? I would be interested in trying one of them out on a car Im picking up next month, but I would also need to know what a/r housings would be available to me.

Geoff Raicer

iTrader: (7)

it looks like BW will have some things up their sleeve for release in a few months, right now the only available housing would be the .80 - which works great, until 24psi

Shea561

Well that's good to hear. I'm still interested btw. The SRT is almost ready for it!

Hope spool isnt to bad

T3 Divided A/R? I hope......

Flyin EVO 2

All I know is Reichen's S400 74mm is making WAY more than it's rated for and WAY more than a Garrett GT 4202 would make at the same boost level.

Comp Turbo is offering a ball bearing conversion of any BW turbo with a trick billet chra and compressor back plate that weighs next to nothing. I'm talking to them about converting my S400 74mm. It would be expensive ($1800 with your BW turbo), but it may be the best of both worlds.

Force-Fed Performance

iTrader: (46)

o yeah, his s400 is def performing better than a 42r. dont think we will go as high as 74mm but we are leaning towards the 71mm s400 right now

Shea561

Geoff,

Any idea on how the 67mm 400sx will compare to the 300sx3 (t-4 divided .91 A/R : 4" ported shroud : 3.5" v-band turbine outlet)?

Will the 67mm 400sx be available in t3 or t4? divided twinscroll? A/R options? OR is this all still to be determined or confidential for the time being.

ScorpionT

iTrader: (1)

The S400SX runs a larger turbine wheel, and isnt available in T3 housings. Bullseye likes to put their T3 housings on BW turbos, and they are very restrictive.

Shea561

Thanks for the insight. Sorry if I came off as an air head lol. Aside from the obvious size difference I was looking more so for power rating, spool up characteristics/comparison and options.

Here's my scenario.... I'm about to have a twin scroll mani for my SRT built and I'm trying to find out what I should build the kit around (t3, t4, twin scroll, single scroll, etc.). Was looking into the Precsion 6765 or 6768 but really want a twin scroll snail and I have been using Bullseye and Borg Warner for the longest. I love them. If this new 400sx 67mm performs as good OR BETTER at the precison 67's I'd be all over it. I really want BW.

ScorpionT

iTrader: (1)

Oh, haha. No worries.


Build it around a twin scroll T4. The S400SX will spool later than a 6765 or 6768, the turbine side is rather large in comparison. If you are building for the street mostly, what FR calls the 91-79 would be plenty, as well as the 6765.

Geoff Raicer

iTrader: (7)

oops repost