BW S256 Question

[prostreetdsmx1]

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

[The Shodan]

Originally Posted by 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?

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

[me612]

Originally Posted by prostreetdsmx1

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]

Originally Posted by me612

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.

[me612]

Originally Posted by Steve93Talon

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

Awesome, thanks for the clarification!

[biglady112]

Diagnosis is in. Spun the number 3 rod bearing. As of right now can't see why it spun. Nothing indicates other than it was just its time. Josh did say just after he installed the turbo that the oil return line kinked itself. SO that is the only possibility right now.

It damaged the crank beyond repair. Tempered the rod beyond repair. And also damaged the crank saddle. Should have the new engine at the machine shop on monday next week after I get back from bonneville.

Steven

[93AWDTalon1]

Originally Posted by me612

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

Your turbo has the et wheel its easy to spot. When you look straight at the compressor you can't see the second set of blades were on a normal wheel you can.

et wheel

non et wheel

[T9S1i]

/\/\/\/\/\

ahhh that makes it so much clearer!

Thanks for the comparison!

[damnslowtsi]

What kind of turbo is on the bottom pic? Garrett?

[Steve93Talon]

Originally Posted by damnslowtsi

What kind of turbo is on the bottom pic? Garrett?

Looks like it's for a WRX, not sure if it's an IHI, MHI, or something else offhand though.

Some new pics of my S258 setup, I finally got the wideband and everything in and did a couple 22psi pulls last night, definitely pulls strong!

http://web.mac.com/stevestrzempek/iW...790%20TSi.html

[biglady112]

The verdict is in. I forgot to post last week before I left to go racing at the salt flats.

Awder did indeed spin the number 3 rod bearing. Tore the crank up really good and ruined the rod as well. The bearing hadn't spun to the point where it stuck to anything, just started to wear thin and scratch things up real bad. His new engine will be at the machine shop on monday.

Looks like he is going with a 1G rod and an aftermarket piston. Wish us luck and hopefully by october he can at least have it on the dyno.

Steven

[me612]

Originally Posted by 93AWDTalon1

Your turbo has the et wheel its easy to spot. When you look straight at the compressor you can't see the second set of blades were on a normal wheel you can.

Thank you for the clarrification on that!

[damnslowtsi]

If you look this way at some Holsets you can't see the second set either. You gotta take the cover off to tell for sure. I 've checked the pics that me612 posted on the previous page again and now I 'm not sure. Some of them look like it is and some like it isn't.

On the other hand a buddy of mine has a Holset and its wheel does look like it is an extended tip with the cover off. May be Holset utilized that idea and never made a big deal out of it, I dunno.

[IPT]

Originally Posted by damnslowtsi

On the other hand a buddy of mine has a Holset and its wheel does look like it is an extended tip with the cover off. May be Holset utilized that idea and never made a big deal out of it, I dunno.

Holset uses what they call Extended Back. That is were the back plate sticks out farther then the blade tips to. Where the BW units the tip extend beyond the back plate.

[dsm-onster]

Originally Posted by IPT

Holset uses what they call Extended Back. That is were the back plate sticks out farther then the blade tips to.

That is a little confusing to me. . .

Do you mean the tips of the blades in the compressor or the tips of the blades at the inducer?

Originally Posted by IPT

Where the BW units the tip extend beyond the back plate.

This confuses my sluggish brain even more. ALL blade tips at the 'BW extended tip area' extend beyond a backplate. Extended tip or not (garrett, MHI, T-netics, BW, Holset, IHI). . .

Do Holsets run extended tip tech or not? Sorry, it seams my brain cells are donating on a voluntary basis at this moment and I'm fresh out of volunteers .

[IPT]

Originally Posted by dsm-onster

That is a little confusing to me. . .

Do you mean the tips of the blades in the compressor or the tips of the blades at the inducer?

The tips of the exducer on the compressor wheel. When you look at the compressor wheel from the side. You can see the tips of the compressor wheel. On the BW units they stick out farther then the backplate of the compressor wheel (when you have the compressor wheel out of the turbo, look at the back of the wheel that is the backplate.)

Originally Posted by dsm-onster

Do Holsets run extended tip tech or not? Sorry, it seams my brain cells are donating on a voluntary basis at this moment and I'm fresh out of volunteers .

NO they call it an Extended Back Wheel.

[aero_sallee]

Figured this would help with your brain cell problem :P
Took a quick picture of my damaged 8 blade HX40 compressor. The back is ground off a bit from the excessive shaftplay, so it would stick out even more than in the photo, not sure how much more.

Link since its bigger than size allowed.
http://i6.photobucket.com/albums/y21...0compwheel.jpg

[IPT]

That is what I am trying to talk about. Thanks for the picture.

[prostreetdsmx1]

Wow oh wow....... so, we just took out the EVO with the 256 and hit it at 28psi with Meth and

I cannot wait until we can get this thing on the Dyno. It is going to make some SERIOUS power.