V-band Housings for EFR Turbos
 

Saw this and thought I would share, just in case it hasn't already been posted:

http://www.treadstoneperformance.com...m.phtml?nik=52

I hope these will fit the Tial v-band flanges, it would give me more turbo options in the future! It also will make the EFR turbos much shorter and easier to package I would think.

It will be a cool product, but it will add a lot of cost. They aren't going to have v band options that keep the internal wastegate, which is a nice feature of the efr.

But for the guys who already may have a complete EWG/tial vband kit, this may be a drop-in option to go BW EFR. I wouldn't necessarily want to redo my downpipe to fit the BW IWG Vband length.

My TiAL buddy says those housings are very tough to cast for some reason and they take a ton of R&D to get production ready. He's also a Garrett super-dealer so he may be biased.

May? :hustler:

In for results.

I desperately want an EFR, but dont want to drop the EWG setup...

The EFR's that we run are not getting the V-Band housings. We have called Treadstone multiple times to ask about it.

BUT IRRC Borg Warner themselves make a v band turbine for it. Only Indy car teams have them, and any questions I've asked them about it fell on deaf ears.

It seems stupid for them not to make different housing for retrofit applications available to the general public.

The turbos may be amazeballs, but the outlay for an entire new setup to suit puts them out of reach for most people.

What makes you say that? The outlay for a genuine garrett in the same relative size is between 800 and 1400, and they you still need to buy a bov and MAYBE and external wastegate and pay more for a mani and dp setup for that wastegate. The turbo itself is expensive, but that price includes a very well throughout waste gate and bpv system.

He's talking about the people who already have a well sorted EWG/Vband setup and may want to just swap out the turbo. For those people, if they want to go EFR, they have to redo their downpipe & plug their EWG port on the manifold. It's be nice to just swap & go, like you can do between Precision's vbands/tial's vbands/ATP's vband inlet T2's/Garrett's new vbands (I assume)/that treadstone piece, etc.

Now you have to outlay someone to shorten your downpipe and plug up the EWG dump if it was blended into the downpipe. Not a big deal for some but a deal breaker for others.

Ah I see what you mean. When I asked treadstone about the housing they told me that they wish they had made it in our size rather than the bigger size since they were seeing more demand for this after they did they already came out with the big housing.

If that is the case then you can only assume that unless they are idiots, they will make a smaller one and all will be right with the world.

They might be idiots, because in the same email they told me they had now plans to make one.

you just ruined my boner.

A bit of a necro, but I'm sure people will be interested.

I've just stumbled upon this and now I need July... It is probably why Treadstone stopped publicising the housings.

2012 SEMA products coming . . . . - Mazdaspeed Forums

SONOFABITCH.


Oh well. But This means the small frame turbine housing is going to be getting made in both t2 sized v-band, and T4 twin scroll. So by calling the correct people I believe you'd be able to get a twin scroll 6758 if you wanted to. Though it looks like the Vband housing is going to be external wastegate. So I'm not too broken up about it coming out like a month after I'll have my turbo in.

am I reading this right?
https://www.miataturbo.net/attachmen...ine=1367529646
IWG + v-band inlet + v-band outlet???11

I wish.

https://www.miataturbo.net/attachmen...ine=1367529848

Looks like they're gonna make me decide between IWG and V-band inlet. Or just run ALLOFIT all the time :giggle:

Obviously EWG will be more difficult if I end up fabbing my own manifold, but v-bands will be easier to deal with...

I'd rather have TSE Inconel studs and the BW IWG than v-bands and a TiAL EWG.

Bro think of all the vbands you could have. Vband e'er'thang!


(i'm a massive ricer so this appeals to me.)

That makes sense, simpler is better. And while v-band inlet is simpler than T25 flange, the IWG is simpler than an EWG (and the Borg ones are as good as an EWG).

I wonder if the v-band EWG housing is the same one Indy uses? Or that housing pictured might be an Indy one and they will also offer a v-band inlet IWG (doubtful but I can dream can't I?).

FTFY

WANT

Yeah I saw the undrilled boss for the wastegate pivot point and figured it was coming without it. But thinking about it more, that boss wouldnt be in that casting if they weren't going to drill a hole there for the IWG.

What casting are you talking about? The little bump just after the inlet is likely so you can drill/tap for EGT.

The one that was on the other side that we cant see and I had the housing flipped around in my head.

I am really hoping that the inlet for the turbine from the manifold is the same size of what Tial uses on their V-Band housing. If I could swap back and forth between the EFR and my GT2871 I would be very happy. I also would like the EFR to have the internal wastegate along with the V-Bands.

The IWG on the EFRs makes the turbine-to-downpipe part of the housing really long, which makes fitment an issue. But from the looks of the v-band housing, you might be able to just swap it straight in where your 2871 was. Except I don't remember if you are EWG or not...

I am EWG, but that does not mean I can not build a cap for that outlet. I know the stock exhaust housing is rather long on EFR with IWG, I have a lowmount manifold so I really should not have any issues fitting that. I also do not have any problems with making a new downpipe and just switching those. Really I just want to stay away from having to build a new manifold just for the EFR. Back to back testing with just a change of the turbo and downpipe would be very nice.

Right but if you don't mind keeping your EWG, I'm thinking that with that EFR v-band housing you could just do a straight swap with your GT2871 from the looks of it. I'm not sure what the coldside looks like compared to the Garrett, you might have to modify the IC piping.

Just swap it out with no mods at all. Back to back testing by removing a couple of v-bands.

after some more research.

https://www.miataturbo.net/attachmen...ine=1367598346

http://sphotos-a.xx.fbcdn.net/hphoto...53670583_n.jpg
they are doing both. wallop. the housing looks to be in similar proportion to the t25 flange, so wont be interchangable with a tial/garrett unit without the DP going too.

Lars, that would be awesome, and get us a really good look at how the two stack up


WIN!!

Wonder how much more these suckers will cost

yup! I cant tell you how happy this makes me. Lets just hope they are investment cast like the photos. I've heard too many bad stories of EFRs turning up with sand cast housings that look like a piece of shit.

The sand cast housings are a temporary solution because the early investment housings were failing QC. The final housings for all of the turbos will be investment cast.

My EWG tends to creep a bit on higher RPM's. Also from what I have read the internal gate on the EFR is amazing and better then an ewg. So if I go with an EFR for testing I would like the best of the best.

Also the making of a downpipe that does not need the EWG dump tube would be easier for me.

I think that my GT2871 will have a slightly better top end the smaller EFR, but I think that the EFR will have a better mid range. Now if I go with the slightly bigger one that Soviet is now rocking I think the top ends would be very similar, with the EFR having a better mid range. If I win the lotto or find me a sugar momma I would love to also throw a GTX of similar size on to test that also.

Let the era of low maintenance aftermarket turbocharging begin! Tune and forget.

Yeah cause those FM kits are a royal PITA, definitely not user friendly.

This takes it to the next level. I give credit to FM for a producing a simple reliable kit, but it still has two key weak points; poor Garrett IWG design and loosening hardware (when run hard).

EFR IWG + v-band solves both.

Essentially OEM reliability after a good tune. No messing around under the hood unless you want to.

+ TSE Inconel studs

TSE Inconel studs are THE solution for a four bolt turbo. Props to Andrew for bringing these to market. They work like voodoo magic.

Inconel studs + Resbond + Locking hardware = The Unholy Voodoo Trinity :firedevil:firedevil:firedevil

Atheist V-bands sidestep all the voodoo drama. :party:

How about lets not count our chicklets before they hatch eh?

Insert ridiculous 18 style rage post here.

Dann

B-b-but Internet pictures!

Insert nitrodann style bs upside down dyno plots

"lol lol haha.... nah bro I'm just kidding ... really.. "

Dann

https://www.miataturbo.net/attachmen...ine=1385876006

MotoIQ Sema Part II

My my, isn't that just a sexy little thing :naughty:

I hav been putting a few EWG's on turbo housings lately and it works AMAZINGLY. The issue with EWG on a manifold is (obviously) poor flow, usually due to crappy pipework to the EWG. I feel that a gate attached directly to a housing scroll is the way to go, ie, internal, or external but on the rear housing.

Dann

How are they holding up? I've thought about doing this but wasn't sure about longevity of it. Could you clear some of your PM's so I could ask you some more questions?

What, like this?

https://www.miataturbo.net/attachmen...ine=1386091352

Special Turbine Housing T25-EWG-44 : atpturbo.com

I had briefly considered buying Hustlers turbo and swapping the exhaust housing for something like this, but then decided it was too much complication and expense for me at this stage. Neat idea though.

Sorry to continue the derail :loser:

He probably means like this
https://www.miataturbo.net/attachmen...ine=1386092387

Yeah like the welded one Viper posted.

I've just heard that welding cast is hard and won't last forever. But I got a second turbine housing so I might just guinea pig it.

so... does anyone have these small v-band housings available??

Not yet and Full Race would be the first to carry them.

HEY GUYS

TiAL Sport - BW EFR : TiAL Sport SS v-Band Housings

AWWW YISS

No IWG, no care