Could it not be possible for Toyota to introduce a slightly bigger truck than the currrent double cab tundra, equip it with a proper heavy duty drivetrain & chassis with modern Hi-tech 6 cyl. turbo Diesel and get reasonable fuel mileage? The above truck should be able to haul 2.5-3.0k or tow 12-15k ? (or not?) I have noticed that all the domestic truck manuf. are putting in these huge V8 diesel's that can twist frames and "do donuts in the parking lot". THis is fine for the macho thing, but is it really required for a work truck and people who don't really care if they are the fastest from corner to corner? Where is the fuel savings with these huge motors? Am I missing something?
I was reading posts over at Tacoma Territory earlier today and they were discussing the possibility of the supposed new 4.4L Twin Turbo diesel with like 350 HP and 428 lb/ft. torque being offered in the 1/2 ton model. I really think the market would respond to this positively IF AND ONLY IF Toyota can do this for less than ~$2,000 more than a comparable gas V8 model. Right now where I live diesel is $3.25/gal. and regular unleaded is only $2.50. Neverhteless, this engine would allow the new Tundra to easily tow the 10,000 lb. target tow weight.
But I still think the 4.7(if they keep it, which, I think they should b/c it is a good engine), new 5.X, and a 4.4L TD would be an extremely competitive lineup for the 2007 1/2 ton Tundras. If Toyota comes out with a 3/4 or 1-ton later, it will require a much larger TD, but thats a given.
That said, I still think the new 5.XL V8 will need something more than VVT-I to get its MPG numbers up to compete with the new Ram HEMIs and Chevy/GMCs with DOD. I would think the DOD systems would be more reliable than a Hybrid. But the rumors are suggesting Hybrid tech. is the road Toyota is headed, but I just donno about a Hybrid "work" truck. A Toyota V8 with DOD would be VERY appealing to me, but opinions are like butt holes.........
Anyway, I guess time will tell what's in store for the Tundra next year. I am anxiously awaiting
That said, I still think the new 5.XL V8 will need something more than VVT-I to get its MPG numbers up to compete with the new Ram HEMIs and Chevy/GMCs with DOD. I would think the DOD systems would be more reliable than a Hybrid. But the rumors are suggesting Hybrid tech. is the road Toyota is headed, but I just donno about a Hybrid "work" truck. A Toyota V8 with DOD would be VERY appealing to me, but opinions are like butt holes.........
Toyota has proven they're the leaders in Hybrid technology. Although it may not help fuel economy so much, General Motors has proven it makes a great generator, with their Hybrid Silverado!
It'd be kind of cool to see a mix of technologies... A Hybrid Turbo Diesel with Displacement-On-Demand. Lol. I'd buy it!
Toyota has proven they're the leaders in Hybrid technology. Although it may not help fuel economy so much, General Motors has proven it makes a great generator, with their Hybrid Silverado!
It'd be kind of cool to see a mix of technologies... A Hybrid Turbo Diesel with Displacement-On-Demand. Lol. I'd buy it!
Oh yeah, I forgot about the benefits of getting the generator with the Hybrid system. I guess that would be a plus. I agree about the mix of technologies. Toyota could trump the competition with a VVT-I DOHC Hybrid V8 with DOD.
I'd be all over that like white on rice!.
I suppose you could add a hybrid or DOD system to a TD. It would definitely be different but it would sell.
I know what DoD (and similar technologies do) but not neccessarily how they accomplish it. Why couldn't you just not fire the injectors or spark plugs on certain cylindars, since it's all computer-controlled, anyway?
When Toyota modify VVTL-i to cylinder-deactivation like Honda modified VTEC to VCM.
Toyota can't use GM or DC's method since DoD/MDS only works on OHV with hydraulic lifters.
Very interresting about the OHV/DOD and that DOD is not possible with DOHC
How exactly does Honda's VCM work? I figured it was similar to GM/DC's DOD? What has the valves/lift timing got to do with shutting off certain cylinders? How do you miodify the VVT-I system to do that? Just curious.
I didn't think dodge had anything to do with it. Why arn't they using it in any of their products?
Yep, they are! But what else is new? lol.
LOL- I hear ya!
Im not sure why GM & Chrysler did that together. I first heard about it from my cousin thats a Engineer for Saturn.Honestly, I thought he was just making it up,because he's always trying to sound "In the know" to the point of being annoying.Anyway,I found several articles on it a months later when I searched (actually googled-LOL) back into it.
Here's the article off a GM website.It does state it's a "non-binding agreement." The website says it's for the full-size Yukon/Suburban,but from what I've heard and read its the same engine thats going in the truck.I could be way off base on that last statement,though.http://www.gm.com/company/gmability/...id_121304.html
I've heard the "alternate energy" people aren't too pleased with it because it only gets about 2 more MPG over the regular gas engine,but thats just a rumor.
P.S. I apologize for taking this further of topic.I'll get back to the 2007 Tundra now.
Very interresting about the OHV/DOD and that DOD is not possible with DOHC
How exactly does Honda's VCM work? I figured it was similar to GM/DC's DOD? What has the valves/lift timing got to do with shutting off certain cylinders? How do you miodify the VVT-I system to do that? Just curious.
It's been a while since I've checked in. Any word on a diesel 3/4 ton 8ft bed Tundra?
I ended up trading in my 2003 2500 Hemi Ram 4x4 for a 2005 2500 Cummins Ram 4x4 due to fuel cost. My hemi was getting 10mpg but now with my diesel I'm getting almost 20mpg highway and 15 city. Not bad for a 6,500lb pickup. Oh... and with 610TQ my ram NEVER downshifts on any mountain pass.
Looking forward to hearing about the 2007 Diesel Tundra.
I really think the market would respond to this positively IF AND ONLY IF Toyota can do this for less than ~$2,000 more than a comparable gas V8 model. Right now where I live diesel is $3.25/gal.
and regular unleaded is only $2.50.
Neverhteless, this engine would allow the new Tundra to easily tow the 10,000 lb. target tow weight.
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