Future Tundra
Lexus Test Driver
Joined: Apr 2011
Posts: 8,312
Likes: 313
From: Las Vegas
Playing devil’s advocate for a moment; my Camaro is a 6.2 V-8 that’s neatly sandwiched into the engine compartment. It cools just fine. The Chevy 2500 HD also has a 6.2 V-8 that sits in what looks like the Grand Canyon of engine compartments. I can drive the Camaro all day in 105 degree heat at 75-80 mph & have a cool running engine getting 26 mpg without cylinder deactivation. I realize the Chevy 2500 HD also offers a 6.6 V-8 Duramax diesel engine, but it’s not crazy larger than the 6.2. Most of the space is wasted. They use active grill shutters to close off the engine bay during certain conditions. I’m not convinced that cooling has anything to do with a Godzilla-looking front end.
And moving a brick through the air while towing another heavy brick behind it can put a lot more load on an engine and require more cooling. That's why the HD trucks have a lot more underhood space and a lot bigger radiators. The diesels also take up a lot of space because you have turbochargers, intercoolers, and all the associated plumbing.
Joined: Feb 2001
Posts: 31,944
Likes: 2,737
From: North Carolina
Lexus Champion
Joined: Jan 2012
Posts: 16,742
Likes: 446
From: Knoxville, TN
Any truck of a decent size will have a large engine compartment just by design.
Why can't someone leak a freakin' road test??? We have earned it! I do like this truck, it's OTT but then what isn't these days.
Why can't someone leak a freakin' road test??? We have earned it! I do like this truck, it's OTT but then what isn't these days.
Lexus Fanatic
Joined: Oct 2003
Posts: 94,208
Likes: 220
From: Virginia/D.C. suburbs
I've seen lots of negative comments, though, not just on Car Chat/CL, but on other forums and Youtube as well, on the loss of the I-Force V8.
Lexus Fanatic
Joined: Nov 2011
Posts: 35,276
Likes: 305
From: ON/NY
Engineers and designers might have to verify this, one reason I suspect for those high hoods and cavernous underhood space is tho allow enough cooling air to flow around the engine to cool those big V8s making several hundred HP and ft-lbs. of torque. While the majority of engine-cooling comes s from the formal radiator/water-pump/coolant system, a significant amount also comes from air that can flow around the hot engine block. I've reviewed a couple of Nissan products in the past (not the Titan) that ran somewhat on the warm side (more than average) because the engine and other components were simply packed in too tightly under the hood, and air didn't circulate freely.
One might (?) argue, with some justification, that there are some V8s, such as those in high-performance cars, that run fine, with average underhood temperatures, without being stuck down inside of Mammoth Cave underhood. True, but those V8s are generally tuned differently from truck-powerplants, have different HP/torque-curves, and produce heat in different ways, under different conditions, than sports cars and high-performance cars.
One might (?) argue, with some justification, that there are some V8s, such as those in high-performance cars, that run fine, with average underhood temperatures, without being stuck down inside of Mammoth Cave underhood. True, but those V8s are generally tuned differently from truck-powerplants, have different HP/torque-curves, and produce heat in different ways, under different conditions, than sports cars and high-performance cars.
Last edited by Toys4RJill; Jun 23, 2021 at 06:02 PM.
Thread Starter
Racer
Joined: Oct 2016
Posts: 1,404
Likes: 215
From: Texas
A lower, sleeker & more chiseled pickup…now that’s worthy of some press, not this horrible looking Godzilla! Interesting side note: I watched a live YouTube stream last night, talking about the so-called Tundra engine “that will blow you away”. They speculated that it might be a very clean diesel! Knowing Toyota’s foolish marketing, I seriously doubt it.
Thread Starter
Racer
Joined: Oct 2016
Posts: 1,404
Likes: 215
From: Texas
Actually, the 6.2 is only in the 1500's which don't have as high of a hood. The gas engine in the 2500/3500 trucks is the new 6.6 V8 which replaces the old 6.0 V8. These are set up quite a bit differently than the engine in your Camaro. They use cast iron blocks instead of aluminum.
And moving a brick through the air while towing another heavy brick behind it can put a lot more load on an engine and require more cooling. That's why the HD trucks have a lot more underhood space and a lot bigger radiators. The diesels also take up a lot of space because you have turbochargers, intercoolers, and all the associated plumbing.
And moving a brick through the air while towing another heavy brick behind it can put a lot more load on an engine and require more cooling. That's why the HD trucks have a lot more underhood space and a lot bigger radiators. The diesels also take up a lot of space because you have turbochargers, intercoolers, and all the associated plumbing.
Lexus Fanatic
Joined: Nov 2011
Posts: 35,276
Likes: 305
From: ON/NY
Point taken, but what’s Toyota’s excuse for the brick styling, especially with going down to a V-6?! Why isn’t Toyota using their BMW co-developed straight six turbo, used in the Supra? This has a all just macho styling & nothing more. I’m a middle of the road customer. I haul stuff occasionally, I tow occasionally, I don’t off-road & I use a truck/suv like a car most of the time. Really, the only reason I bought a Lexus RX, is because there wasn’t a good looking, reliable AND economical truck on the market. There still isn’t.
Last edited by Toys4RJill; Jun 24, 2021 at 09:32 AM.
Lexus Test Driver
Joined: Mar 2020
Posts: 5,482
Likes: 88
From: N/A
Point taken, but what’s Toyota’s excuse for the brick styling, especially with going down to a V-6?! Why isn’t Toyota using their BMW co-developed straight six turbo, used in the Supra? This has a all just macho styling & nothing more. I’m a middle of the road customer. I haul stuff occasionally, I tow occasionally, I don’t off-road & I use a truck/suv like a car most of the time. Really, the only reason I bought a Lexus RX, is because there wasn’t a good looking, reliable AND economical truck on the market. There still isn’t.
good thing there are unibody "truck" options not for those who dont want a half ton, go scratch your slant nose itch there.
Pole Position
Joined: Jan 2020
Posts: 2,738
Likes: 544
From: CA
Considering the enormous numbers of 1/2 tons being sold in North America, it would be environmentally correct, and highway-safety correct, for the government to regulate, and lower, the hood height. If you want to scratch your bulldog nose itch, go buy a semi!
half ton truck is a semi truck now? Lets not get carried away here.
If you dont like the hood height, there are unibody trucks and midsize trucks as your next option. But its obvious you despise trucks.
If you dont like the hood height, there are unibody trucks and midsize trucks as your next option. But its obvious you despise trucks.
Pole Position
Joined: Jan 2020
Posts: 2,738
Likes: 544
From: CA
Flippant begets flippant.
I own a Tundra and had a Chevy 1/2-ton before that, so I don't "despise trucks." One can't hope for an evolution in truck design that addresses climate change and safety without being accused of hate? Talk about getting carried away!
I own a Tundra and had a Chevy 1/2-ton before that, so I don't "despise trucks." One can't hope for an evolution in truck design that addresses climate change and safety without being accused of hate? Talk about getting carried away!
