Twin Turbo Direct Injection V8

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Thread: Twin Turbo Direct Injection V8

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    Twin Turbo Direct Injection V8

    So when is it going to happen? Does anyone know anything?

    I am baffled by the deafening silence on this subject. Yeah, so GM just announced that the next gen Corvette will have a direct injected V8 option. It better! I mean isn't this the next natural step for engines. Look at power out put of the ford eco-boost! Why are people not standing outside dealerships demanding this. So GM has decided to direct inject a V8. Where is the twin turbo package? The ZR1 motor is impressive I'll admit, but direct injection + boost, now you're cooking with nitro. Can you imagine the torque? If Ford can do it with 6 cylinders, how hard could it possibly be to do it with 8. Set the general ignorance of that statement aside and admit that the point has merit. I realize that there are technical complications and much work to be done, but the principals are all the same. There's no new science to sort out or theoretical hurdle to clear, they just have to build it. Surely both GM and Ford have twin turbo charged direct injected test mules running around Detroit somewhere, or at least making music in some deep dark dyno chamber. Surely the must.....right? I would be ashamed of them if they didn't. What I want to know is does anyone have any information, any leaks or hints as to what might come?

    I can imagine that if there is a direct injected V8 corvette on the way that there is a twin-turbo'd ZR1 coming shortly there after...?

    GM: Don't let me down here.....

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    6.2 Liter LS9 Supercharged V8 MrCritical's Avatar
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    Re: Twin Turbo Direct Injection V8

    There aren't "people outside dealerships demanding this" because it's a niche market.

    Already approximately $100k, a ZR1 with a price increase (regardless of performance mods) isn't going to sell in significantly more volume, and I doubt the capacity is there to produce more volume if it did.

    Then there's the reality of accidents. Street cars (and their occupants) look really, really ugly after 100 mph crashes. We're already over 200 mph here. Roads in the U.S. are in horrible shape. So you can take your chances basically in an unsafe environment, or go to the track with your $100k+car. Then your insurance company finds out and cancels you.

    Of course technology goes forward. I am looking forward to the new engines as much as anyone. But you also remember half the EcoBoost story was fuel economy.

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    Re: Twin Turbo Direct Injection V8

    I would like twin turbos on the v8....although probably will be supercharger for packaging

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    Re: Twin Turbo Direct Injection V8

    Yea, I don't see them going away from a supercharger. Though it would be sweet to see a compound charger.


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    Re: Twin Turbo Direct Injection V8

    Reportedly the Corvette team wanted to make a DOHC 3.8 V8TT for the Z06 a few years back, to attract a different audience, but it got nixed by bean counters early on. Anyone else remember this?

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    Re: Twin Turbo Direct Injection V8

    Quote Originally Posted by JBsZ06 View Post
    I would like twin turbos on the v8....although probably will be supercharger for packaging
    Although looking at the GenV and how the DI hardware sits in the valley, it may be a challenge to fit a positive displacement blower in there and still maintain a low profile package.
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    Re: Twin Turbo Direct Injection V8

    I recently had this discussion with some vette techs and packaging the supercharger is easier than turbos for corvette even with. The direct injection running off the back of the valley and on top.

    Ls9 solution has been successful for world class beating hp.

    Direct injection and all other attributes of. The new LT1 will likely improve fuel efficiency and bump the power levels a little higher.

    For everyday drivers the hp levels are getting to be dangerously high when you go much higher ....out of the dealer network....

    I think we will see sevens(700) but that's about it and turbos aren't needed for seven hundred hp on a LT1 engine.

    With direct injection compression can be upped on a boosted engine and lag is all but diminished so your premise for free hp without parasitic drag is logical. I just don't believe corvette can properly package the turbos under hood whereas the supercharger can be packaged easily

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    Re: Twin Turbo Direct Injection V8

    I am more interested in a DSG and PDK and performance AWD technology coming to GM. Power has never been GM's problem, puting it down and controling it always has been.

    I also hope GM does not give up the V8 market to the Germans with the CTS and uses the new LT1 for a top of the range CTS Offering below the CTS V.
    an LT1 CTS with about 450 HP 445 Lb's Ft of Torque and an 8 speed DSG powertrain would be an awesome alternative to an E550
    Last edited by mchicha; 11-21-2012 at 01:37 PM.

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    You know the 4.4L twin turbo V8 at BMW makes less power than the Gen V, right? 450HP on 87 octane sounds pretty good.

    Turbos ruin the fun. Naturally aspirated is better. How would you like it if someone routed your exhaust gases back into your mouth?


    Thought so.

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    Re: Twin Turbo Direct Injection V8

    The TVS R2300 is capable of any power levels that GM desires, and after the initial testing of twin turbos with the Blue Devil program I do not believe that GM will revisit.

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    Re: Twin Turbo Direct Injection V8

    Quote Originally Posted by free_energy0 View Post
    Reportedly the Corvette team wanted to make a DOHC 3.8 V8TT for the Z06 a few years back, to attract a different audience, but it got nixed by bean counters early on. Anyone else remember this?
    I remember these rumors. It was supposed to be a small displacement (3.x l) v8 TT DOHC with high redline. But it was just a rumor. GM won't make an engine which can't share some of its architecture with "cheaper" production engine (like small block chevy). And i don't see a need for that kind of engine until there is a car, from GM, in certain price range that can justify of making such an engine. And I doubt there ever will be.
    Only car (that i can remember) that has small displacement v8 with TT and big HP (over 600 hp) is Mclaren MP4-12..and that is one very expensive car. Rumors are future quattroporte will also have 3.8 l v8 TT..but "only" with 550+ hp.. and this car will also cost a lot of money.
    Last edited by asrapid1; 11-21-2012 at 04:33 PM.

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    Re: Twin Turbo Direct Injection V8

    I would be really surprised if the next Gen GT500 did NOT have a TTDIV8. Supercharged engines just hve way too much parasitic drag.

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    Re: Twin Turbo Direct Injection V8

    Quote Originally Posted by Extreme4x4 View Post
    I would be really surprised if the next Gen GT500 did NOT have a TTDIV8. Supercharged engines just hve way too much parasitic drag.
    That can definitely be an issue, and for turbocharged engines cost and engine compartment heat can also be issues. My dream was always a 5.8 Trinity with direct injection, and twin turbochargers but the reality will probably be a 5.0 Coyote with direct injection, and twin turbos.

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    Re: Twin Turbo Direct Injection V8

    I believe Mercedes is already doing this with the E550.

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    6.2 Liter LS9 Supercharged V8 big swede's Avatar
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    Re: Twin Turbo Direct Injection V8

    Quote Originally Posted by Extreme4x4 View Post
    I would be really surprised if the next Gen GT500 did NOT have a TTDIV8. Supercharged engines just hve way too much parasitic drag.
    I tend to agree. I think the current "for track purposes only" Cobra Jet mustang is a preview to the next GT500's power plant. Turbos would also do better in EPA testing and since you don't lose a ton of hp spinning a supercharger you don't have to run nearly as much boost to hit the same hp levels. Two smaller turbos would provide GT like mileage and sick factory hp, wicked low-end torque with unlimited aftermarket potential.

    http://autos.yahoo.com/blogs/motoram...153426236.html
    Last edited by big swede; 11-24-2012 at 08:00 PM.

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