I think it should fit, they are the same engine. This would make a very nice swap. Here is the link on the engines. I wonder if GM will go to this for the cobalt SS in the future.

http://solsticegxpowners.com/forums/showthread.php?t=16

 

nope ...solstice = rwd ... Cobalt = fwd the trans will be a big issue

 

you don't have to swap the trans

 

id like to see this done

 

You would have to completely redo all of the IC piping, exhaust manifold, and intake. Possibly oil/coolant lines and wiring too. Definitely not a direct swap.

 

no im assuming the swap would cost about 8 grand easy after all the custom work is done

 

it would cost some nice cash with all the custom parts

 

Why would you want to swap a Solstice Turbo engine into a SS/SC anyway?

Both engines have there +/- but it wouldn'r be close to wrth the pain in the ass to swap.

 

just build up the engine you have and add a turbo. It would be much easier and cheaper.

 

Nice motor but I don't see it going into the SS from the factory. My gut feeling is GM will never let the Cobalt become more powerful (at least on paper) than the Saab 9-3.

 

I've posted this before, and I am going to post it here too:

I keep reading posts by people that think that the Cobalt SS or G4/G5 will get the 2.0L Turbo next year! I just wanted to post some pics for comparison, to look at the layout of the engine compared to the LSJ.

The solstice is a front-engine, RWD car. So the inline 4 is mounted facing forward. As you can see in the pics, this leaves room for the turbo hanging off the side of the engine, and the large air intake on the opposite side of the piston bank. If you look at the pictures of the LSJ mounted transversley (FWD, front engine) in the Cobalt, you will see that the turbo and intake as mounted in the Solstice would never fit in the Cobalt.

GM would need to re-design the engine to fit these into the Cobalt or G4/G5. Considering that the G4/G5 is an "interm" car until Pontiac can develop it's own vehicle suggests to me that GM would not spend the money to re-work this engine into the car, nor would they have the time considering it will be produced in a few months. In all likelihood, GM will simply make comparable trim levels to the Cobalt line such as SE/GT/GTP(or GTX), with the LSJ being the top engine. If this car is starting production in June/July, GM would need to have a fully working prototype in a month, ready for SAE certification (costly). So, I don't anticipate GM throwing this engine into the car in the near future (2007 model year).

When you consider that the Cobalt and G4/G5's competition is now primarily the 197 HP Civic Si, 168 HP Mini Cooper S, 150 HP Focus ST, 160 HP Mazda 3, and a few others we still look pretty good with 205HP. Yes, there is a 300HP Dodge Caliber SRT-4 coming, but it will be priced at about $26,000 base (well out of the $20,490 range of the SS/SC). The new Mazda 3 with the 2.3 Turbo (from the AWD Mazda 6) will likely be more expensive like the Caliber as well. So, why would GM waste a whole bunch of money to make the car faster stock, when it is already the fastest car produced in it's class?

So, could GM put this engine in the Cobalt or G4/G5? Yes. Will they for the 2007 model year? Likely not IMO. I could see this happening in 2008 if they give the car a makeover, but not really before then. It may also be possible that the Cobalt and G4 may appear as next generation models in 2009 or soon after, and then the turbo will make an appearance. So, we will see in time.

So, you can see from the photos below, just how much more compact the LSJ is. The supercharger wraps around fron nicely, out of the way. The turbo can't be mounted like in the Cobalt, because the LSJ already sits against the firewall. There is no room for the turbo on the top left of the engine bay, unless they can mount it much lower than on the Solstice. Some major work would need to be done to put this into the car.

 

The 2.0 T would actual be a very easy transition in the Cobalt . Notice the front accesory drives . The castings in the RWD and FWD block are the same . That means less the supercharger , the remaining FWD accesory drive would be a carry over . The LSJ shortblock would accept the direct injected 2.0 cylinder head , and pistons . As for the turbo plumbing , intercooler routing ect. , that part is already done too . Though changes would have to be made for the dual scroll turbo . The pic I posted is the engine bay of our europeon platform twin , the Astra VXR that is powered by 2.0 turbocharged /intercooled ecotec and a 6 speed manual trans . Theres your routing in the Cobalt SS . I will gladly eat crow if I end up being wrong , but if you guys thing the LSJ is still gonna be around in 2008 , your gonna be disappointed . If they choose to increase power with the LSJ , they would have a helluva time passing stricter emmisions regs and fuel economy standards . 50 state emmisions legality was a battle with the GMPP staged kits . Grrrrrr , I wish I could remember where I saw the article that spoke about that issue

 

From what I've heard from GM that is the Turbo set up that is suppose to replace the Supercharger set-up. Thats what I've heard after I bought the car.

 

Yeah, I agree with most of what you have said. Still, the dual scroll turbo won't fit in the manner it is attached in the Solstice RWD application. This would pose a problem that would need some work to resolve. I can't really see this in the car next year, but certainly a possibility for 2008. I highly doubt it will be making anywhere near 260 HP though. The car would loose it's market because everyone who wanted one would be unable to afford insurance on it.

As far as the Astra, that is not really a fair comparison in my opinion. The European market is vastly different than ours in this segment. Most people will not buy a petrol powered car due to the outrageous price of petrol. These vehicles appeal to a different audience than what the market for a Cobalt SS Supercharged is. So just because there is a turbo over there, doesn't mean there will be one here. Did the Astra ever have the LSJ in it?

Guess we'll see in time. My biggest issue is that they will loose all their "Cobalt SS Supercharged" branding and marketing from the last while, and that the 2.0L turbo looks to be fairly maxed out as far as power gains (already running 20 psi), so they wouldn't have much to do with it for staged upgrades, unlike the LSJ, which GM can now make a killing with. I would be highly unusual for an engine change in a car that has only been around for 2-3 years. Not unheard of, but somewhat uncommon. Also, the Cobalt SS seems to be selling realy well as they are highly sought after, and hard to come buy (at least in Canada).

Also, not to attack anyone, but I keep hearing a few people saying that the LSJ was always a temporary engine for this car. I really want to know where all you people hear this from, or where you read it, because all the information I have recieved even remotely yeilds such news.

 

No it isn't. If you want to go ahead and see if you can source the parts from that Vauxhall. I would bet that it would be next to impossible to get everything you would need here in the US. And even then you would pay so much for them that you could have had a shop build it for you cheaper. None of the GXP plumbing would work without a lot of modification.

 

Technically you can get this in here but a lot of custom fabbing would need to be done AND the turbo would need to be remote mounted towards the back. Money would need to be spent to handle several issues but it's not too far fetched as many may make it seem.

If I had the money to spend on something like this just to be unique I would but I don't. As for the motor leaning on the firewall, have you looked back there? **** there is tons of space, if there wasn't why is hahn making a turbo kit to mount BEHIND the motor?

Anyways, with the dual scroll it's slightly larger in comparison but doesn't necessaryly mean it can't fit back there.

 

Here are some issue that affect the 2.0 Turbo in a Cobalt

(Issue 1)
You might have heard the ION (also delta platform) is getting discontinued after model year 2008 (or thereabouts). Saturn *was* slated to get a virtual clone of the Vauxhall Astra (which in VXR form uses the Ecotec Turbo LNF in 240-hp tune) as its replacement. Not sure if that is still in the works because...
(Issue 2)
GM severed their ties with Subaru (we owned 20% of Fuji Heavy Industries, which in turn owned Subaru). How does that relate? The Saab 9-2x (a Suburu Impreza clone) was the sole joint venture between GM and Subaru. But now that we have no ties to Subaru, what happens to the 9-2x when it is up for redesign? Well, the rumour now is that it will actually be the Astra clone, not the ION, with the uber-turbo LNF. How does that affect the Cobalt? Well, if you've got Chevrolet (value brand) selling a Cobalt as fast as the more expensive Saab 9-2x (premium brand), then the product planners for both brands are likely to get into some in-fighting.

Food for thought.

 

I can't imagine that the brand issue is that big of a deal. I mean 99% of the popultion doesn't know that Saab and GM are one in the same. Furthermore who really cares? People that buy a Saab 9-2x aren't exactly in the Cobalt market.

 

hes got a point, saab owners are looking for a more upscale car.. not a cobalt
it sucks we don't have subaru anymore

 

i would love to see it happen

 

Anyone catch this paragraph from this post: https://www.cobaltss.net/forums//showthread.php?t=12355

Like I argued above, turbo won't fit in the FWD Cobalt or Pursuit (G5).

 

im nto sure if it could be done but im sure someone will get it done! we have to wait till 07 to find out

 

Of course you could turbo it, just not the same turbo as what the solstice uses. It won't fit in the car. I looked closesly at my LSJ yesterday, and there is no way the dual-scroll turbo can be mounted on the engine in the manner it is in the solstice.

And if we do get a turbo, it will be in 2008. That is the next scheduled facelift for the car. 2007 would be too early.