3.0 B58 vs 3.5 VR30DDTT Torque

[Seahaven]

I'm trying to understand why and how the 3.0 Supra engine produces more torque with less displacement compared to the 3.5 400Z engine. Is there a simple explanation as to how this works? I've always been under the impression that larger displacement usually produces more torque, especially when it comes to sports cars and trucks. Thanks.

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[SD_MK]

The VR30 is a 3.0... hence the "30" in the engine code. And the supra just makes more torque because it's design is overall more superior to the VR30.. the b58 also shares some similarities to the B57 Diesel motor.

 

[mokleen]

The VR30 is a 3.0... hence the "30" in the engine code. And the supra just makes more torque because it's design is overall more superior to the VR30.. the b58 also shares some similarities to the B57 Diesel motor.

ye

 

[Elektro]

barring technical differences in how the motor is actually constructed (e.g. stronger parts allowing more torque)

- over vs. under square bore/stroke
- straight six vs. vee six (straight design is balanced without additional counterweight shafts etc)
- length and geometry of manifold runners
- simply more air being pushed into engine by turbine = more power

 

[SD_MK]

It's cause the Supra comes with a 3jzgte.

 

[XtremeMaC]

You're asking very basic questions. You'd be better off watching Engineering Explained videos on YT. I'm sure the dude explained B58 recently 3 years ago

Also this


Also try

https://www.google.com/search?q=b58+vs+vr30

 

[Rocksandblues]

BMW power

 

[mokleen]

It's cause the Supra comes with a 3jzgte.

yee

 

[SupraYYJ]

BMW power

Typo. BMW Mpower.

 

[Mason]

Bee Em Double You

 

[JoeDaMechanic]

I'm trying to understand why and how the 3.0 Supra engine produces more torque with less displacement compared to the 3.5 400Z engine. Is there a simple explanation as to how this works? I've always been under the impression that larger displacement usually produces more torque, especially when it comes to sports cars and trucks. Thanks.

It must be the tires.

But as mentioned by others the displacement is the same 3L. So it's not a 3L vs 3.5L. Secondly how they get to 3L is vastly different, two motors can both have 3L but get to that displacement with a very different bore and stroke.

Vr30 bore x stroke: 86mm x 86mm so square. 10.3:1 compression ratio.
B58 bore x stroke: 82mm x 94.6mm so under square. 10.2:1 for 21+ 11.0:1 for 2020
If you had a large bore with short stroke you'd be over square.

All other things being equal an over square could fit larger valves and Rev higher but it will typically make its power at higher rpms.
An undersquare engine will have smaller valves and Rev lower but make more torque down low.
Think of a square motor as in-between those two.

Then add in a turbo to force in air and valve size doesn't matter as much.

Then there's also considerations as quality of valve train used, compression ratio, boost pressure and how the turbos are matched to the motor, and intake runner size and length.

So over simplifying it but, longer stroke and turbo(s) as they come from the factory compared to their respective motor.

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