schmendog

iTrader: (10)

I have changed my plans from twins to a single and back more than I change my underwear. Decided recently I have to go with a single for budget reasons, but found a pair of used twin BW's for a great price locally, and just want to see what kind of numbers they could potentially make at 20 - 25 PSI. He has multiple housings that he's willing to put them in, options are either .83 1.00 and 1.10. Here are the specs on them:

T4
60mm compressor
83mm exducer
67.5mm turbine
76mm inducer

Going into my GTO
goals are 8.5 - 9.0 or roughly 1000 WHP
Iron 347
10.5:1
E85
241's with a valve job
cam from Martin
LS6 intake stock TB
built valve train
TH400


Any input is appreciated

99tramsamc/fia

iTrader: (2)

Plenty of turbo for 1000hp
get the .83 housing. BW's are great turbo's.
25psi will give you heads aches (aka..heads gasket issue)...LOL

schmendog

iTrader: (10)

I keep hearing how great they are, that's why if I do twins I want to stick with BW's. I just originally planned for larger ones than these, but may not be able to pass them up for the price like I said. Ideally if my stock heads with ARP studs can push more than 20 PSI I will be happy, but not surprised if I start pushing water past that.

schmendog

iTrader: (10)

Feeling pretty confident now about the condition of these units, I found out that the guy selling them rebuilds turbos for a living, and he just rebuilt them with all new seals, hardware etc.

schmendog

iTrader: (10)

Well ****, the guy sold them but has another set of S359 available with the following specs:

BW S359 T4 (59mm compressor 80mm exducer/ 67.5mm turbine 76mm inducer)

Again, available housings are .83 1.0 or 1.10 does my goal still sound possible with the small difference of 1mm on the compressor wheel? Im leaning toward the 1.0 or 1.10 housing.

dmaxvaz

iTrader: (1)

are you worried about a little lag? if not, a pair of BW S366s would be great. They have t4 exhaust housings, they are a .88 or .91 a/r, and the exhaust wheels are 74 mm. They are also priced pretty good new. the 68mm exhaust wheel on the ones you want to buy dont flow as well as the 74mm ones do, and seem to surge more..

schmendog

iTrader: (10)

Those are the pair I originally wanted, but could not make my budget work with them. Im considering these smaller used ones because they are a great deal from a guy who just rebuilt them.

schmendog

iTrader: (10)

Anyone have any real world results pushing a pair similar to these to their limits?

schmendog

iTrader: (10)

Not that anyone seems to care but I bought them lol. Hopefully they work out well... good talk.

dmaxvaz

iTrader: (1)

you get the 1.0 exh hsg on those?

schmendog

iTrader: (10)

No the .83 I hope I don't regret it but I chose the .83 based on results of a few other running similar combos on yellow bullet.

dmaxvaz

iTrader: (1)

just use some large wastegates, should be fine and get a cam spec'd for smaller turbines/exhaust hsg's

schmendog

iTrader: (10)

I've got two Tail 38mm Ill be using, plan to run 20 PSI so I think they will be good.

Wicked69

At that boost level it should be perfect.

samdogmx

iTrader: (14)

in for results.

I went with a pair of bigger bws for my next setup but Im very curious to see how these do for ya.