Why is the 3.6 VVT engine not more widely used .
Re: Why is the 3.6 VVT engine not more widely used .
Originally Posted by redzed
I was thinking more like $600, but still we're talking about an amount that's just a fraction of the $1,800+/car retiree health care liability.
Something else important to remember is that the $600-$800+ that pushrod engines save is manufactorer cost, not end unit price. They most likely save the consumer $1200-$2000 (what does a create northstar cost?) I imagine if the Malibu was offerend with both the 3.5L HV & 2.8L HF 90% would rather save $1600 and have the equally powered and fuel efficent HV.
Re: Why is the 3.6 VVT engine not more widely used .
Originally Posted by Z28x
I imagine if the Malibu was offerend with both the 3.5L HV & 2.8L HF 90% would rather save $1600 and have the equally powered and fuel efficent HV.
2. As a consumer, I don't care in the least about the profitability of the manufacturer.
Last edited by redzed; Oct 19, 2004 at 07:13 PM.
Re: Why is the 3.6 VVT engine not more widely used .
Originally Posted by redzed
I think there's a bigger point to be made: GM should have standardized production (for North America at least) on a single, large displacement DOHC V6. Nissan USA gets by with only the 3.5 liter DOHC VQ in passenger car applications - despite the fact that 2.0, 2.5 and 3.0 liter versions are still sold in Japan. Imagine the marketing buzz that might have been created in mainstream products if GM was actually leading the industry in power.
Why when you build pushrod V6's that get as much power? Would you want a 260 HP Nissan 3.5L or 3800 Series III that makes the same power, and is much more modifiable. Even with a blower the 3800 is cheaper than a DOHC setup.
Also, anyone that calls GM's upcoming 3.9L low tech is smoking crack. 240+ HP with variable vale timing and DoD. There will be a 270-280 HP version with 3 valve heads also.
Every automaker fights to save dimes on a car....$800 is a freaking moutain. Especially when the only major difference is perception. That is why Nisaan's quality has went to ****.
Re: Why is the 3.6 VVT engine not more widely used .
Originally Posted by redzed
The "Shortstar" was compromised from the beginning by poor engineering compromises. The beancounters nixxed variable valve timing, so the slide-rule wizards chose to go for a small bore/long stroke design for torque. Ironically, Nissan did the exact opposite with the VQ-series (big bore/short stroke with VVT). Guess which motor is still in production?
In the end, the "Shortstar" was short on horsepower, short on torque, and short on refinement. Ironically, this engine was originally slated for the Sigma-platform Cadillacs.
It wasn't a great engine, neither was the Quad 4 and neither was the Olds Diesel. The "Shortstar" was just another nail in the coffin for Olds.
In the end, the "Shortstar" was short on horsepower, short on torque, and short on refinement. Ironically, this engine was originally slated for the Sigma-platform Cadillacs.
It wasn't a great engine, neither was the Quad 4 and neither was the Olds Diesel. The "Shortstar" was just another nail in the coffin for Olds.
Re: Why is the 3.6 VVT engine not more widely used .
Originally Posted by formula79
Why when you build pushrod V6's that get as much power? Would you want a 260 HP Nissan 3.5L or 3800 Series III that makes the same power, and is much more modifiable. Even with a blower the 3800 is cheaper than a DOHC setup.
2. Nissan's VQ motor is rated at 298hp in the 2005 manual transmissioned 350Zs and Infiniti G35s. Pretty snappy.
Originally Posted by formula79
Also, anyone that calls GM's upcoming 3.9L low tech is smoking crack. 240+ HP with variable vale timing and DoD. There will be a 270-280 HP version with 3 valve heads also.
Every automaker fights to save dimes on a car....$800 is a freaking moutain. Especially when the only major difference is perception. That is why Nisaan's quality has went to ****.
Every automaker fights to save dimes on a car....$800 is a freaking moutain. Especially when the only major difference is perception. That is why Nisaan's quality has went to ****.
Re: Why is the 3.6 VVT engine not more widely used .
Originally Posted by formula79
The new HF V6 is a direct decendent of the shortstar...much like the Nissan 3.5 liter is of previous Nissan V6's.
Actually the "Shortstar" was a 90 degree V6 derived from the Northstar V8. Both the HF and HV V6s are 60 degree units, both of which descend from the lowly 2.8 liter V6 that premiered in the Chevy Citation.
Re: Why is the 3.6 VVT engine not more widely used .
Originally Posted by redzed
1. Like all 3800 V6s, the S/C is on its way out. Despite all that lovely torque, it still sounded pretty crude at full throttle.
2. Nissan's VQ motor is rated at 298hp in the 2005 manual transmissioned 350Zs and Infiniti G35s. Pretty snappy.
Yup, that Malibu Maxx is pretty close to the quality of a Lexus - especially if you parked one next to a Lexus. Still, C&D was exactly wowed by the pre-production 3.9 liter G6s, and Nissan is offering a genuine horsepower advantage in the here and now.
2. Nissan's VQ motor is rated at 298hp in the 2005 manual transmissioned 350Zs and Infiniti G35s. Pretty snappy.
Yup, that Malibu Maxx is pretty close to the quality of a Lexus - especially if you parked one next to a Lexus. Still, C&D was exactly wowed by the pre-production 3.9 liter G6s, and Nissan is offering a genuine horsepower advantage in the here and now.
Anyhow---Motor Trend said about the same thing!
Scary when they agree. Hopefully production will sort out any power deficet the pre production cars had (if that was the case)
If the 240hp 3.9L V6 can't crack the 7 second barrier (o-60mph) with an automatic I would be very disapointed.
Re: Why is the 3.6 VVT engine not more widely used .
Originally Posted by redzed
Presto wrongo...
Both the HF and HV V6s are 60 degree units, both of which descend from the lowly 2.8 liter V6 that premiered in the Chevy Citation.
Both the HF and HV V6s are 60 degree units, both of which descend from the lowly 2.8 liter V6 that premiered in the Chevy Citation.
Re: Why is the 3.6 VVT engine not more widely used .
Originally Posted by redzed
1. I think there's a bigger point to be made: GM should have standardized production (for North America at least) on a single, large displacement DOHC V6. Nissan USA gets by with only the 3.5 liter DOHC VQ in passenger car applications - despite the fact that 2.0, 2.5 and 3.0 liter versions are still sold in Japan. Imagine the marketing buzz that might have been created in mainstream products if GM was actually leading the industry in power.
2. As a consumer, I don't care in the least about the profitability of the manufacturer.
2. As a consumer, I don't care in the least about the profitability of the manufacturer.
2) Me neither, but manufacturers don't give stuff away for free, the consumer always pays in the end. To the avg. comsumer DOHC SOHC OHV mean nothing, What matters is HP and MPG.
Re: Why is the 3.6 VVT engine not more widely used .
Originally Posted by formula79
The new HF V6 is a direct decendent of the shortstar...much like the Nissan 3.5 liter is of previous Nissan V6's.
Re: Why is the 3.6 VVT engine not more widely used .
Originally Posted by formula79
Actually the linage of the engine is more like this...
3.4L DOHC V6 circa 1992 (most expensive V6 ever)>Northstar>3.5L shortstar>current 3.6L
Olds may have bore some development costs, but they are nowhere near the costs GM as a whole incurred on the initial 3.4L DOHC engine it is based on.
3.4L DOHC V6 circa 1992 (most expensive V6 ever)>Northstar>3.5L shortstar>current 3.6L
Olds may have bore some development costs, but they are nowhere near the costs GM as a whole incurred on the initial 3.4L DOHC engine it is based on.
redzed,
Compared to the competition at that time, the Shortstar was a good engine. You say its short on power, but compared to the then 222hp Maximas, the 200hp Accords, 210 (???) hp Camrys...uhm, where does it fall short???? No, it was not as torquey as a 3800, but compared to its competition its performance was quite similar. The lack of VVT hurt it a little overall, but it still compared to its peers in its respective timeframe.
I have driven, back-to-back actually, a 2000 Maxima SE and a 2001 Intrigue GLS. There were NO refinement drawbacks to the Intrigue's engine, at all. It wasn't Camry-smooth at 6,500, but compared to other engine architectures (Maxima's Nissan V6) you seem to love so much, its right in there. Have you even driven an Intrigue, or are you merely referring to your car mags again??
Last edited by Jason E; Oct 19, 2004 at 09:52 PM.
Re: Why is the 3.6 VVT engine not more widely used .
Originally Posted by teal98
How can that be? The Nissan 3.5 is a bored and stroked version of the 2001 3.0 with VVT added. The Shortstar and HF V6 don't even share the same cylinder bank angle.
Apparently I was mistaken.
Was the old 3.4L DOHC V6 60*? I remember reading it was based on the old 2.8L for the citation.
I thought the Northstar was derived from the 3.4L DOHC...which led to the shortstar...
Re: Why is the 3.6 VVT engine not more widely used .
Originally Posted by formula79
Why when you build pushrod V6's that get as much power? Would you want a 260 HP Nissan 3.5L or 3800 Series III that makes the same power, and is much more modifiable. Even with a blower the 3800 is cheaper than a DOHC setup.
Also, anyone that calls GM's upcoming 3.9L low tech is smoking crack. 240+ HP with variable vale timing and DoD. There will be a 270-280 HP version with 3 valve heads also.
Every automaker fights to save dimes on a car....$800 is a freaking moutain. Especially when the only major difference is perception. That is why Nisaan's quality has went to ****.
Also, anyone that calls GM's upcoming 3.9L low tech is smoking crack. 240+ HP with variable vale timing and DoD. There will be a 270-280 HP version with 3 valve heads also.
Every automaker fights to save dimes on a car....$800 is a freaking moutain. Especially when the only major difference is perception. That is why Nisaan's quality has went to ****.
I don't now if you've driven a VQ, but you can't possibly understand what we're talking about unless you drive one. the 3800 will seem/sound like a woodchipper to you afterwards.
i make no claims for the 3.5L or the 3.9L haven't driven one and the other isn't even out yet. from what i've read, they are respectable, smooth performers. but i can gurantee you they wouldn't have diddly **** on a VQ.
Re: Why is the 3.6 VVT engine not more widely used .
Originally Posted by formula79
Apparently I was mistaken.
Was the old 3.4L DOHC V6 60*? I remember reading it was based on the old 2.8L for the citation.
I thought the Northstar was derived from the 3.4L DOHC...which led to the shortstar...
Was the old 3.4L DOHC V6 60*? I remember reading it was based on the old 2.8L for the citation.
I thought the Northstar was derived from the 3.4L DOHC...which led to the shortstar...
3.4 DOHC = Quad 4 tech + 3.4 OHV block
BTW the 3.4 DOHC in my 97 Monte is at 75K and is smooth as silk while screaming all the way to 7K RPMs and runs like a top, just chaned out the plugs and plug wires, Intake manifold gasket, plenum gasket and a couple of vacuum lines.


