BW S256 Question

[prostreetdsmx1]

i'm actually selling my 256 to go bigger but i can say that the internal is not something i liked on it. A descent external setup is ideal.

You can pick up an awesome O2 housing from SLS or punishment for a 38mm gate and be all set.

[blcknspo0ln]

Originally Posted by No_Skillz

Haha Tom. You know I'm all done with supporting mods and I'm dying for a turbo now. Plus the fact that I haven't seen my car in 3 weeks really kills me. I miss it more than my gf (just between us, m'ok?). Shoot, I might even pick up a coupla cheap turbos while I'm in China. I've been reading nonstop about these S256s but external gate is a financial hurdle, whereas I could just pick up that PTE I've been wanting for about 1 grand.

Oh btw, if you want to sell that 5031, I get first dibs, aight?

well, it's not a whether of IF I sell the turbo, it's a matter of when. I'm probably going to upgrade a little past christmas, when I treat myself either to a BW turbo or a FP setup

martin,
what was the reason for the upgrade? How much did the s256 flow for you? what are you looking to upgrade to?

[No_Skillz]

Originally Posted by prostreetdsmx1

i'm actually selling my 256 to go bigger but i can say that the internal is not something i liked on it. A descent external setup is ideal.

You can pick up an awesome O2 housing from SLS or punishment for a 38mm gate and be all set.

Would one of the cheaper re-routed O2 housings from punishment do the job? I've been hearing alot of good things about their products lately. (Oy the SLS rerouted O2 is ~$300 )

Also, anything specifically you didn't like about the internal gate setup?

Thanks for the help.

[prostreetdsmx1]

I have never used a Punishment product so i really couldn't comment on quality or performance.

SLS has made a lot of stuff for me and has always been EXCELLENT. I can say that all of the products i have purchased from SLS have been worth EVERY PENNY.

As far as the internal gate..... it just didn't do as well as the turbo could. It seemed to be a little restrictive with the internal setup.

Originally Posted by No_Skillz

Would one of the cheaper re-routed O2 housings from punishment do the job? I've been hearing alot of good things about their products lately. (Oy the SLS rerouted O2 is ~$300 )

Also, anything specifically you didn't like about the internal gate setup?

Thanks for the help.

[No_Skillz]

Are those O2 housings on your website made by SLS?

[damnslowtsi]

Hey Martin, can you expound a bit more on the internal gate issues. Usually it is either creep or inability to run desired boost due to a flapper being blown open. Yours seem to be something else. I know that external is better, just trying to get a feeling of how much internal will suck in this aplication. I 'm currently running an SCM 61 with internal and don't have much complaints. It can hold as low as 11-12 and as high as I ever needed which is around 30#s with no creep and a little spike.

[me612]

Is there anywhere that shows a picture of the difference between the Extended Tip and non extended tip BW turbos? I'm going to look at a used S362, and I only want it if it's extended tip. Any pictures out there that compare extended to non-extended?

[brute]

Martin, Steve, and wt71gas, do any of you have dyno graphs of the 256? Preferably on a DSM with the Bullseye housing. I'd like to see spool/boost holding characteristics as well as the shape of the curve.

[Steve93Talon]

Originally Posted by brute

Martin, Steve, and wt71gas, do any of you have dyno graphs of the 256? Preferably on a DSM with the Bullseye housing. I'd like to see spool/boost holding characteristics as well as the shape of the curve.

I never dyno'd the car, but on pump, I'd guesstimate 425whp based on weight and traps. On VP103 at 32psi, i'd say it was close to 500whp from the improvement in 70-90 times. Spool was very quick for a 50+lb/min turbo, as others have indicated in this thread. Boost held flat as high as I revved it but that's probably more a function of how well the gate is working since I wasn't at the point of choking the compressor yet.

I finally got my fab work done at JMFab, hoping to have it driving by the weekend:

LINK

[blcknspo0ln]

I'm guessing you're tuning with DSMLink? Mind sharing the log? thanks!

[Steve93Talon]

Originally Posted by blcknspo0ln

I'm guessing you're tuning with DSMLink? Mind sharing the log? thanks!

Yep, DSMlink. The log was like 2 days before the accident (back in May) so I'll have to try and figure out which computer it was on and then find the file. I'll post if if/when I find it.

[biglady112]

Hopefully on wednesday Josh will be able to give a solid time to back up this turbo. He is currently at 32psi guys. Entirely stock 7 bolt. Just BC280's, o-ringed head and a fresh composite head gasket. We are looking for a mid 11 second pass at altitude. But an 11.99 will do as well.

Steven

[blcknspo0ln]

Originally Posted by biglady112

Hopefully on wednesday Josh will be able to give a solid time to back up this turbo. He is currently at 32psi guys. Entirely stock 7 bolt. Just BC280's, o-ringed head and a fresh composite head gasket. We are looking for a mid 11 second pass at altitude. But an 11.99 will do as well.

Steven

Any reason why a composite HG is run, not an MLS? Especially at that boost level I would have thought MLS would have been used.

[Steve93Talon]

Originally Posted by biglady112

Entirely stock 7 bolt. Just BC280's

Stock springs?? It'll definitely be interesting to see what it runs at altitude.

[No_Skillz]

I am 90% set on internal gate, but can someone please tell me what PSI the 38mm flapper blows open at? That's basically my last concern now.

[blcknspo0ln]

Mike,
it's really dependant on the wastegate actuator. The tighter the arm is, the more boost you can hold; but I've found that the tighter the wastegate arm is, the more boost spike your'e susceptible to.

Take my advice dude and go external!

[No_Skillz]

Ok fine! I guess I'll gather my funds and eat nothing but peanut butter and jelly sandwiches with tap water for the semester. Anyone know where is best place for an oil feed line for this turbo?

[Steve93Talon]

Originally Posted by blcknspo0ln

Any reason why a composite HG is run, not an MLS? Especially at that boost level I would have thought MLS would have been used.

I've always had better luck with composite gaskets than MLS. I ran 32psi with no problem on a composite, where the MLS would start to push coolant after a few hard runs.

Originally Posted by No_Skillz

Anyone know where is best place for an oil feed line for this turbo?

The oil feed inlet on the turbo is metric and uses a crush washer to seal. I used an Autometer metric to 1/8" NPT adapter, then an 1/8" NPT to -4AN 90 deg. adapter. Here's a link to what the Autometer looks like (metric thread might be different, confirm before ordering it):

LINK

[blcknspo0ln]

Rule of thumb is generally OFH for a non-water cooled turbo and from the head on a water-cooled turbo. If you have no balance shafts, you generally want to run a restricter on the feed line.