This is the housing i've got WHAT IS IT????

This is what the guy wrote who sold me this housing:
This is an escort cosworth compressor housing (just the alloy inlet side
casting) which is a direct swap with the one on the t3 ive sold
you,this has
anti lag built in i.e a variable vane setup which alters according to
revs/load

Sounds similar to what we use on jet engines ?

We use variable stator vanes (blades that dont spin but are fixed in the inlet) these alter pitch according to engine load to adjust the speed and airflow through the rotating blades to give maximum airflow all the time.
I think the new Porsches use this in their turbo's too.

Should be good if you get it working and thats actually what it is

Edited to say, I think the Porsche uses a variable turbine not compressor ?

Hi there,
So you don't think it's anything to do with throwing fuel in the turbo then, Begbie and Saint were concerned that was what i was on about when i explained i'd got anti lag housing, Hopefully things will become clearer now there's a picture they can see???

To be honest yor picture isnt very clear, can you stick up a link to a larger picture ?

Is that any better????

just host a full size image at somewhere like photobucket.com and put up a link here. Most of us use Photobucket but there are heaps of different ones

Using your sig pic is a bit too small.

How do i do this matey??? soon as you let me know, you can have the link, there are two photos in photo bucket!!

PICS OF "ANTI LAG" HOUSING http://i132.photobucket.com/albums/q27/nicdav1/DSC00388-1.jpg

http://i132.photobucket.com/albums/q27/nicdav1/DSC00389-2.jpg

dunno wht this is, haven't seen it b4

This is new to me! All the VNT turbo's I've seen have been placed on the exhaust side, not the compressor/inlet side.

I presume the same can be applied to both sides, i.e you have cut back blades to increase spool up or leave them the same to keep good boost at high revs.

What does the underside of the housing look like nick?

Chris

Nick, do you have any pictures of the inside, it doesnt look like much at the moment ?
VVT turbos have been around on diesels for quite a while but not on petrols, that looks like an old unit so Im not sure what it is ?

Check out this pic. Pretty good, and very similar to the ones of porsche vnt models.

http://images.tribe.net/tribe/upload/photo/7a0/d33/7a0d3320-0c3b-49f2-8298-b32868853342

Normal actuator for boost control on left, wastegate at top and underside one controls the vanes.

Chris

nick's turbo looks too old to have such features though.

They've been out for donkey's years!

More pics of housing!!!!
http://i132.photobucket.com/albums/q27/nicdav1/DSC00390.jpg
http://i132.photobucket.com/albums/q27/nicdav1/DSC00391.jpg
http://i132.photobucket.com/albums/q27/nicdav1/DSC00393.jpg

Looks like a dump valve to me ?


The important part that is the actual variable valves is as we though on the turbine side of the turbo so without it the part you have bought is pretty much useless

thats compressor housing of a rover tomcat turbo, and thats the bypass, pretty sure. Sure I can find some proof of that too....i'll be back.

Rich is so good..... http://www.moto-build.com/mainsite/roverturbo.html look down the page to the hybrid turbo. Nick let me help you out with the harsh truth, your mate's given you junk, looks like it came out of a bin. He know nothing about cosworths because thats off no cosworth. Go and bin it. You can fit a turbo T3/4 off a sierra cosworth, or rather a t3/4 spec with fiat type center housing. Cosworth t3 housing have larger banjo bolt fittings then the fiat.

Rich

rich

looks like an intergrated blow of valve, a guess a BOV could be called an anti lag feature in the broader sense, but it isn't anti-lag as such

I'm with Rich on this, bin it and get something decent. Sorry but I think he has clipped you. I reckon you would be way better off with a decicated BOV and a standard turbo hat

Ouch! you've been stung.

Didn't pay for the housing anyway, the guy just gave it me with the brand new turbo he sold me, So i've got the new standard housing anyway.... Just wanted to use that housing if it would have been beneficial????

no use what so ever.

Rich

Side note about VNT's

Mostly used in Diesel's, never found on petrol cars due to the heat on the vanes, causes them to break, apart from Porsche who are the first to develop it for the petrol engines

Well on that link you posted http://www.moto-build.com/mainsite/roverturbo.html
It states that with this turbo there would be less lag does'nt it??? It may look old and like it came out of a bin but if it reduces lag even in the slightest isn't it worth putting on???

nick, listen all you have is a compressor housing of some old rover. The valve is nothing more then a dump valve that recircs, you have that on the coupe as standard, thats the only thing that would attribute to reducing lag. So you already have that feature as std. Compressor housings are cheap, assign that one to the recycle bin. As for motobuild thats a hybrid of the std rover unit and feature of that hybrid. All you have is a scrap compressor housing, it has no benefit to you. Not sure why rover spec'd such a design perhaps it was simpler for them.

rich

Begbie is right.
It was tried on a R5 GTT a long while back and it just didnt work after a while.

VNTs are used by all the diesel people who get loads of torque below 2k revs now like the Vag engines, HDI engines and the like that push out a decent amount of grunt

Porsche have a way to cool the turbos down but i still dont expect them to last long to be honest

Its apparently not about the cooling solution, but using more advanced materials that can handle the heat better.

They first used it in petrol cars on the 1989 Shelby CSX-VNT

More info on:

http://en.wikipedia.org/wiki/Variable_geometry_turbocharger

On a side note, I'm sure Porsche wouldn't release it if they didn't expect it to last - a lot of Porsche turbo's are every day drivers. It would look pretty bad if they had a lot of warrenty failures...

only time will tell paddy as i cant see the owners admitting to it for a fair while or porka showing anything publicly for it. I wonder how many of those Shelbys are still working right LD

Yeah - I don't think it was supposed to be too reliable, and thats why there havn't been any high volume production petrol cars with this type of turbo until the porsche.

It would be pretty expensive for Porsche / borg warner to keep replacing them, as those cars will have at least a 3 year warenty, which will probably be extended by the owners in a lot of cases.

Its pretty easy for them to test those turbo's through a lot of cycles very quickly - I'm sure both companies know how long they will last on average, and wouldn't put them on the cars if they expect them to fail quickly... Just my opinion.