BW S256 Question

[Steve93Talon]

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]

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]

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]

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.

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.

 

[IPT]

The oil inlet for a BW S256 is not metric. IT is a British thread pitch. IT is a 1/4" BSPT.

 

[me612]

Picked this up today for $200 used. S362 with divided T4 housing. I'll be purchasing a BE T3 housing for it.

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[damnslowtsi]

Is this one ET or not? Compressor cover is a bit different than you normally see on vendors' sites but, reguardless, it is a good deal provided it doesn't smoke and has some life in it.

 

[me612]

Yes the compressor cover is a little different then these other ones. I just figured for $200, not a bad deal either way. As for having ETT, I honestly do not know 100%. The guys I bought it from said it was, but I honestly have never looked closely at a compressor wheel before, so I don't even know what I'm looking for. I tried looking everywhere for a comparison picture, and the only one I could find is hidden within Extreme PSI's webpage

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Still, I don't know what I'm looking for. I can't find anywhere that actually points out what exactly is "extended" on these. Is it the tips at the inducer that are extended taller? Is it the tips on the ends of the exducer extended out farther? or extended taller? I just find that it's very hard to find info on these, and everywhere just seems to generically say "Borg Warner has extended the tips of the compressor wheel". I guess I need more clarification because I see a bunch of different things that I'd consider "tips".

Here is a picture though, of what my compressor wheel looks like.

 

[prostreetdsmx1]

hey folks, sorry for the delayed response. i hadn't seem the posts you guys made.

Anyway, i never really put it to the test on my car to see what the turbo will really do. the only reason i am going to something bigger is because i have decided to do some dumbshit with the car and go with one of the 300 series. they've been making SERIOUS power with those.

We are putting an EVO on the dyno real soon that should show serious serious power pump with meth.

 

[blcknspo0ln]

Please, dyno sheets! I'm on the fence about once of these bad boys or an FP turbo, help us out!

 

[me612]

Well I got the compressor cover for the above turbo looking a little nicer now Quick threw a coat of gunmetal powder coat on her, and she looks good as new!

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[prostreetdsmx1]

Please, dyno sheets! I'm on the fence about once of these bad boys or an FP turbo, help us out!

oh man i can't tell you how excited we are to finally get it on the dyno. the car has been non stop with issues such as trans/clutch and stuff but all and all it's an EXCELLENT test platform with an owner that wants the same thing the rest of us do. I will say that driving that car side by side with some of the 35R and 50trim cars we've built it definitely feels like a monster and the sounds is soooooo cool. hahahaha

It sounds like a MAC truck under acceleration, you know the hardcore high pitched whiste sound??? love that!

 

[biglady112]

Our S256 review is going to have to wait until next year.

Awder spun a bearing less than 48 hours before our track event.

Steven

 

[damnslowtsi]

Oh, that sucks.. Do you know why it was spun? Detonated a bit too much on pump?

And as far as me612's turbo, it looks like a standard (non ET) wheel, but don't feel too bad. It was a killer deal anyway if it works good. Can you shoot a pic of the turbine as well? Looks like the turbines on non ET turbos look different as well. Curvature and number of blades. May be the ET ones DO come with those low pressure drive turbines mentioned before. I want to know the answer for that very bad.

 

[me612]

I'll shoot a pic later, but back to my question, what am I looking for as far as Extended Tip? All the info I find simply just says the tips are extended, but that's it, no clarification. Are they talking about the inducer tips or exducer tips? Does extended mean they are taller, or wider? What am I looking for? What tips are extended?

 

[prostreetdsmx1]

end of the blade is extended. more flow without the weight and mass.

 

[The Shodan]

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?

BW 256 wheel on the left. Standard 50 "trim" with 74.75 exducer on the right.

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[me612]

end of the blade is extended. more flow without the weight and mass.

Again, that doesn't really specify. End of what blade, is extended which way? The end meaning the end of the exducer? And it's extended taller? or extended longer? Or the end of the blades on the inducer are taller?

By the looks of the pic that Shodan put up, it looks extended both taller at the inducer, and longer at the exducer.

 

[biglady112]

He runs E85 and methonal injection. And detonation won't cause a spun bearing last I checked. Car was tuned well. I would just have to say it was its time at this point. We won't know until we get in there. Which won't be for a while. When we find the cause we will report back. Car's oil was to the fill line. It happened while idling waiting for food I guess. Time for a built 2.0L I guess.

Steven

 

[Steve93Talon]

Again, that doesn't really specify. End of what blade, is extended which way? The end meaning the end of the exducer?

If you look at the exducer, the tip is flared out and curved. That's the extended tip.