Gt45 t4 turbocharger on stock 350 tbi 5.7

[618 Syndicate]

It does work, but then came anti-lag and everyone jumped on that.

It's no different than sequential turbos. One for quick response and one for high rpm power.

I agree with everything you said. I was just pointing out that it can work.

 

[618 Syndicate]

I'm just gonna leave this here...

https://gmauthority.com/blog/2023/09/gm-considering-twincharged-engine-with-turbo-and-supercharger/amp/

 

[Hipster]

I can absolutely help you destroy a motor. I've seen me do it!

I've broke enough stuff in my life without boost. Though I could imagine boost will help you find the next weak link that much faster lol

 

[Hipster]

I'm just gonna leave this here...

https://gmauthority.com/blog/2023/09/gm-considering-twincharged-engine-with-turbo-and-supercharger/amp/

It's the last paragraph that got me, complexity , and more systems and parts to fail. Usually the trade off for more hp per ci. is less longevity but it seems quite a few oems are headed that direction including in truck offering's. Smaller displacements and forced induction.

 

[Pinger]

A boosted blower has been done by detroit. The old 2 cycle diesels had a blower, then turbo was added. It works. Sized correctly, it's ok. However, I'm no fan of the roots style blower. It takes too much power to turn them.
In my opinion, if you want boost, turbo it. Want more? Add more turbo(s).

With a turbo upstream (in series) of a blower, the blower can return work to the crank rather than draw it when the turbo provides a pressure greater than the pressure downstream of the blower.

Or, on a 4T, by running the blower at speed lower than it can provide full VE (ie, it is 'throttling' - but without the losses) the pressure differential across it will 'drive' it and it will deliver work to the crankshaft. That turns energy that would be squandered at a throttle valve into recoverable energy.

See here for more >> https://contest.techbriefs.com/2017/entries/automotive-transportation/7450

 

[Erik the Awful]

Not in current practice, and that paper fails to convince me he knows how. He's basically proposing to put an alternator on the blowoff valve.