3.0L Hurricane Updates?

[HEMIMANN]

Turbos changed from large mass optimized for max.load only some time ago.

25 years ago, a waste gated small turbo provided a step load solution. It was a crude attempt to reduce turbo boost lag. It solved the lag, but didn't provide optimal boost curves, being a single step change.

Now days, the complicated variable vane full size turbo is used. These provide constantly variable boost controlled by electronic closed loop actuator. It fixes the issue at high cost and low durability, like most gizmos these days.

 

[Wild one]

What makes you think it's "wrung-to-within-an-inch-of-it's-life"? 500 HP for a turbo inline 6 is, well, no where near an inch of it's life. If it's built properly with forged internals, proper cooling and oiling, 500 HP is nothing.

Look at the 2JZ-GTE. People are getting 1500+ HP out of those 3.0 I6 turbo engines.

And who's to say the truck version won't be different? They could opt for an iron block, different turbo's, internals, cam profile and tuning to put out 450-475 HP and 450-475 ft/lbs, moving the torque to come on early like we'd want in a truck, while maintaining reliability.

The differance between Toyota and FCA/Stellentis ,is Toyota used to build engines that would last,FCA/Stellentis not so much,lol. If the engineers had free range to build what they wanted they could probably build a decent inline turbo 6,but by the time the bean counters get done cutting corners,i'm not so sure how much i'd trust Stellentis to build a decently long lifed high output inline turbo 6,that'll live a long life while being worked hard. Maybe i'm wrong,only time will tell,but FCA/Stellentis doesn't have a great rep at building products to live much past the warrenty period

 

[HEMIMANN]

I've forgotten all the Fiat jokes from the 70's, after they went crawling back to Italy after their disastrous foray into as N.A. market.
They made GM's Roger Smithmobiles look like gems by comparison.

Younger members have no idea how bad they are.

 

[Daily Driver44]

Primarily due to turbo lag. One big turbo has more mass, mass decreases acceleration, and decreased turbo acceleration means lengthier turbo lag as boost builds. Smaller turbos moving the same air spin up faster resulting in the same amount of boost but faster. This makes the power delivery more linear, meaning it's more predictable and you get the power "on tap" vs "ringing up the engine room".

makes total sense now. thank you!

 

[HEMIMANN]

Except all turbo wheels have rpm speed limits, known as critical speed. They come apart above this rpm.

So - the little wheels can get your boost quickly, but can't provide the full amount at high engine powers.

Hence the waste gated and variable vane technologies.

 

[ramffml]

What makes you think it's "wrung-to-within-an-inch-of-it's-life"? 500 HP for a turbo inline 6 is, well, no where near an inch of it's life. If it's built properly with forged internals, proper cooling and oiling, 500 HP is nothing.

Look at the 2JZ-GTE. People are getting 1500+ HP out of those 3.0 I6 turbo engines.

And who's to say the truck version won't be different? They could opt for an iron block, different turbo's, internals, cam profile and tuning to put out 450-475 HP and 450-475 ft/lbs, moving the torque to come on early like we'd want in a truck, while maintaining reliability.

I'm sorry but I'd never buy that contraption. Ford would love to sell me a drop dead simple big block 7.3, putting out 475 lb/ft of torque.

 

[HEMIMANN]

I'm sorry but I'd never buy that contraption. Ford would love to sell me a drop dead simple big block 7.3, putting out 475 lb/ft of torque.

But would it have MDS?

GOTTA have it for .00001+ mpg, yes?

 

[JerryETX]

But would it have MDS?

GOTTA have it for .00001+ mpg, yes?

I use the word never cautiously because that’s a long time. I’ll never buy another Ram with MDS.

 

[Mb7640]

I've forgotten all the Fiat jokes from the 70's, after they went crawling back to Italy after their disastrous foray into as N.A. market.
They made GM's Roger Smithmobiles look like gems by comparison.

Younger members have no idea how bad they are.

Fix it again tony is one lol i was born in the mid 70s

 

[Riccochet]

I'm sorry but I'd never buy that contraption. Ford would love to sell me a drop dead simple big block 7.3, putting out 475 lb/ft of torque.

Maybe you should be looking at the engine you are touting. It's plagued with issues. Cam/Lifter failures, harness failures, valve failures. It's a Ford product. It's a p.o.s. on 4 wheels.