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2010 LGT engine pics! Turbo, manifold, TMIC


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  • 2 months later...

Here are a few pics I took while under the car today. This has to be a twin scroll turbo, there are two separate exhaust paths going into the hotside.

 

 

[ame=http://www.flickr.com/photos/rutch/4027681962/in/set-72157622433385527/]2010 Subaru Legacy GT Turbo and Manifold on Flickr - Photo Sharing!@@AMEPARAM@@http://farm4.static.flickr.com/3496/4027681962_70fa103f8c_m.jpg@@AMEPARAM@@4027681962@@AMEPARAM@@70fa103f8c[/ame]

 

[ame=http://www.flickr.com/photos/rutch/4027682600/in/set-72157622433385527/]2010 Subaru Legacy GT Exhaust Manifold on Flickr - Photo Sharing!@@AMEPARAM@@http://farm3.static.flickr.com/2707/4027682600_5a7af95195_m.jpg@@AMEPARAM@@4027682600@@AMEPARAM@@5a7af95195[/ame]

 

 

[ame=http://www.flickr.com/photos/rutch/4027684260/in/set-72157622433385527/]IHI VF54 on Flickr - Photo Sharing!@@AMEPARAM@@http://farm3.static.flickr.com/2639/4027684260_cbd809dd92_m.jpg@@AMEPARAM@@4027684260@@AMEPARAM@@cbd809dd92[/ame]

 

 

[ame=http://www.flickr.com/photos/rutch/4026930021/in/set-72157622433385527/]Oil Drain Plug on Flickr - Photo Sharing!@@AMEPARAM@@http://farm3.static.flickr.com/2435/4026930021_4d4d7ef503_m.jpg@@AMEPARAM@@4026930021@@AMEPARAM@@4d4d7ef503[/ame]

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Ususally, a twin scroll turbo has inlets beside one another... the photos show that the pipes are above one another... not side by side.

 

Therefore, I'd bet that this is a conventional single scroll turbocharger with the collector being on the (or "the") inlet to the turbine housing.

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Ususally, a twin scroll turbo has inlets beside one another... the photos show that the pipes are above one another... not next to them.

 

Therefore, I'd bet that this is a conventional single scroll turbocharger with the collector being on the inlet to the turbine housing.

 

only way to be sure is to get a pic of the turbo without the exhaust mani on it.

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Ususally, a twin scroll turbo has inlets beside one another... the photos show that the pipes are above one another... not side by side.

I dunno, looks like other IHI twin scrolls to me...

http://img185.imageshack.us/img185/4436/vf372no0.jpg

 

someone send me gaskets and I'll drop the manifold! All the bolts come off so easy while the car is new, LOL

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  • 2 weeks later...
It's not a twinscroll, btw.

 

You lie! A friend of a mechanic said he knew a guy at subaru who got a leaked service manual and it said twinscroll all over it. Its totally a twinscrew dude just look at it. :wub::spin::spin::wub:

 

Thanks for the info. Has someone dropped the headers yet?

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You lie! A friend of a mechanic said he knew a guy at subaru who got a leaked service manual and it said twinscroll all over it. Its totally a twinscrew dude just look at it. :wub::spin::spin::wub:

 

Thanks for the info. Has someone dropped the headers yet?

 

Well, I should have said - it's unlikely it's twinscroll. One, the exhaust housing doesn't look like one. Two, this:

 

http://img.photobucket.com/albums/v307/Rutch/CarPics/noscroll.jpg

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Well, I should have said - it's unlikely it's twinscroll. One, the exhaust housing doesn't look like one. Two, this:

 

http://img.photobucket.com/albums/v307/Rutch/CarPics/noscroll.jpg

 

I don't get where you are drawing your conclusion from. The gasket is maybe not the best, but where the manifold bolts to the turbo sure looks TS to me.:confused:

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Manifold is twinscroll "ready" for sure (per the diagaram), but the gasket should separate the streams all the way into the exhaust housing. If the diagram is correct and the gasket looks like this, I don't see the turbo being twinscroll.

 

Besides the exhaust housing looks single scroll to me. Perhaps they decided for universal equal length header design that can accomodate twinscroll turbos as well. Maybe JDM version comes with one? Or there will be some STI version taking advantage of it?

 

Also, note, due to the tubular construction of the header, it would be impractical/difficult to manufacture to join all four pipes into one big ass pipe. Easier to do in the turbo (cast housing). Plus the separation of the exhaust pulses as far as possible even though not all the way to the turbine is still beneficial.

 

http://car.watch.impress.co.jp/img/car/docs/169/682/lgc96.jpg

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I also realized that the separation of the pipes does not make it easy (if possible) to mount actual twinscroll turbo in this location (and this orientation). You want the inlets side-by-side not top-bottom.

 

Look at this Garrett twinscroll to see what I mean:

 

http://www.atpturbo.com/mm5/graphics/00000001/Catalog%20Images/Turbochargers/GRT-TBO-050_450-2.jpg

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I understand your points now, thanks.

 

But, remember what the turbine entry looks like on most VF series turbos? It doesn't seem big enough to encompass both of those manifold holes.

 

Looks like it does on this turbo.

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