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Old 11-16-2007, 05:25 PM   #1
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A Turbocharged Northstar V8 for the next 9-5?

The good folk over at Trollhattansaab.net are reporting deep rumors that Saab has been offered the chance to turbocharge the Northstar V8 for the next generation 9-5.

Typically the European commentators are aghast at the idea of such a large, wasteful thing as a V8 in a Saab.

But IMHO a turbo'ed V8 9-5 with XWD would be absolutely incredible.

Here's the link: http://www.trollhattansaab.net/archi...-question.html

Thoughts?
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Old 11-16-2007, 05:26 PM   #2
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Sweet.
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Old 11-16-2007, 05:30 PM   #3
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sounds awesome to me, and more importantly it sounds like something people would buy, assuming they can make the price right.

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Old 11-16-2007, 06:02 PM   #4
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Yes.

100%.


The northstar is a very well done motor to begin with. A turbo would only make it more so.


I wonder what wheels will be driven?

I know the NS is for FWD, but I wonder if they would change it due to platform sharing.


Can you imagine the sound?

Stare at this:


While you listen to this:
http://youtube.com/watch?v=0scF6LnhnU8
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Old 11-16-2007, 06:25 PM   #5
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Originally Posted by gregabbott View Post
Typically the European commentators are aghast at the idea of such a large, wasteful thing as a V8 in a Saab.
Clarkson will love it and that's all that REALLY matters, I think a turbo Northstar for the 9-5 and a turbo DI 3.6 for the next-gen 9-3 would be an excellent halo engine pair.

That said, I'm not really sure if a turbo port-injection northstar would be any more powerful than a turbo 3.6 DI engine, and a smaller v6 making the same power would be more traditionally saab-like.

But all bets are off if GM is seriously considering giving saab a turbo northstar that makes the same hp/liter numbers as the current saab engines do. That thing would be a monster on the order of the E60 M5's V10, the RS6's old V8, the E63 AMG's v8, or even GM's LS7.

Two words: Build it

Saab needs a halo car and this thing with XWD could redefine the brand as long as they make it handle as well as an audi. It would also allow them to build the Aero-X as a Brera-like FWD/AWD hatch with a powerplant that is as good as the concept's.
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Old 11-16-2007, 06:38 PM   #6
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Northstars are shot after 60,000 miles. Reliability ratings are sure not to go up.
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Old 11-16-2007, 07:23 PM   #7
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Northstars are shot after 60,000 miles. Reliability ratings are sure not to go up.
Amen. Northstars not only burn a ton of oil (3 quarts in less than 3k miles) but do not have a good reliability rating. They are nice, smooth engines for sure but turbocharging it would only be more unreliable.

Sure, a turbo'd 9-5 V-8 would be cool, but how would they do away with the massive turbo lag?

Now a sequential turbo Northstar V-8 powered 9-5 with rear drive/XWD and a 6 speed manual would be something to talk about.
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Old 11-16-2007, 08:50 PM   #8
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Originally Posted by kalvinr11 View Post
Amen. Northstars not only burn a ton of oil (3 quarts in less than 3k miles) but do not have a good reliability rating. They are nice, smooth engines for sure but turbocharging it would only be more unreliable.

Sure, a turbo'd 9-5 V-8 would be cool, but how would they do away with the massive turbo lag?

Now a sequential turbo Northstar V-8 powered 9-5 with rear drive/XWD and a 6 speed manual would be something to talk about.
what if it had a VGT system?
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Old 11-16-2007, 09:07 PM   #9
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Originally Posted by kalvinr11 View Post

Sure, a turbo'd 9-5 V-8 would be cool, but how would they do away with the massive turbo lag?
You're kidding. Right?


I would think that lag would be a whole f'ing ton less noticable when you have the torque of a V-8 vs a 4cyl.

But what do I know...


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Old 11-16-2007, 09:08 PM   #10
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Quote:
Originally Posted by kalvinr11 View Post
Amen. Northstars not only burn a ton of oil (3 quarts in less than 3k miles) but do not have a good reliability rating. They are nice, smooth engines for sure but turbocharging it would only be more unreliable.

Shows what I know...





*heads back to garage*
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Old 11-16-2007, 09:12 PM   #11
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i think a nicely done twin turbo v6 would be fine ?

Either way, i think Saab should still offer the 9-5 with a smaller engine choice FOR SURE (in the USA, in Europe it's a given) I would hate for them to do away with the 2.3 altogether
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Old 11-16-2007, 11:58 PM   #12
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they should just make the first turbocharged V-24 and get out front for a while. should be really smooth and have lots of torque down low.
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Old 11-17-2007, 12:21 AM   #13
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they should just make the first turbocharged V-24 and get out front for a while. should be really smooth and have lots of torque down low.
hahaaha
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Old 11-17-2007, 04:26 AM   #14
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You're kidding. Right?


I would think that lag would be a whole f'ing ton less noticable when you have the torque of a V-8 vs a 4cyl.

But what do I know...


You are correct topher, I think our friend had his thinking reversed.

Typically the larger the displacement of motor that you use, the less lag you are going to comparing turbos that are of equal size.
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Old 11-17-2007, 06:40 AM   #15
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The Northstar was really impressive....in 1992. Today, they say the 3.6 DI with its 304hp is pretty much right there with the Northstar. That shows much more advancement with the 6 and stagnation with the 8.

I think a 280hp 2.8T as the base engine and a 360hp 3.6 DI-T in Aero form, +400hp in Aero-Black/X form and AWD and 6spd would make the 9-5 a viable competitor. Make it undercut the 5 series by $5-10k as well. Walk in and get a car faster and as well handling as a BMW 550i for about $48k compared to $60k and it will be hard to ignore.
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Old 11-17-2007, 06:52 AM   #16
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it will be fun for sure. pert of me says "oh noes more GM shit" but if it's what it takes for GM to take a viable interest in Saab go for it. the one thing i will say is I hope GM doesn't to likethey did with the V6 and shoehorn it in. God that thing suks to work on.
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Old 11-17-2007, 07:58 AM   #17
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If they want to give Saab a V8, why not the LS2?
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Old 11-17-2007, 08:09 AM   #18
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Originally Posted by Mr. Unkept View Post
If they want to give Saab a V8, why not the LS2?
It makes good power, but the its kind of low tech. The N-Star at least as DOHC which it needs to compete with the German sedans. Over the past year more and more GM pushrods have been replaced by "high feature" V6's that feature VVT and V-intakes and DOHC. Eventually, the V8's are likely going to have a similar make over.
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Old 11-17-2007, 08:12 AM   #19
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Originally Posted by Jameson View Post
The Northstar was really impressive....in 1992. Today, they say the 3.6 DI with its 304hp is pretty much right there with the Northstar. That shows much more advancement with the 6 and stagnation with the 8.

I think a 280hp 2.8T as the base engine and a 360hp 3.6 DI-T in Aero form, +400hp in Aero-Black/X form and AWD and 6spd would make the 9-5 a viable competitor. Make it undercut the 5 series by $5-10k as well. Walk in and get a car faster and as well handling as a BMW 550i for about $48k compared to $60k and it will be hard to ignore.
COMPLETELY AGREE! It would be a better choice all around.



Quote:
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If they want to give Saab a V8, why not the LS2?
Also true if they wanna do a V8 why not do something that is ALREADY a beast and reliable? It's rare that you hear Clarkson crap on a car for being American V8 powered. His biggest complaint is "it's not advanced but its a hell of a hammer" with regard to this. So I think it would be fine provided all the other dynamics are sorted out.
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Old 11-17-2007, 08:34 AM   #20
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Just got off the phone with my father, he was disgusted at this idea. The engines are great for 20-30,000 miles, but after that, when they need to be replaced, (which happens, eventually), no one will rebuild them because they never sit right after the head has been off, and they knock. So, when it comes time to replace the engine (the naturally aspirated version), you're looking at $8500 at the dealer... If GM bastardizes this brand that much, I'll never buy one of these cars again.

Plus, let's think about some over-engineering for a second. Where's the Saab sense of practicality? The Northstar's starter is built into the inside of the engine.

Last edited by Les Bouquins; 11-17-2007 at 08:38 AM.
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