Got Boost? We know JonK does!

[Jon K]

lol - or just use a turbo/twin screw

[kyleN20]

why not do it ll at once, a small turbo, a twin screw, and a asa with a cvt on it. that fits the bill for a 1200whp super e34 doesent it?

[onewhippedpuppy]

All other BS aside, it does make sense that you could use a transmission to effectively vary the pulley side depending on the RPM. If a CVT type set-up could be made compact enough, it seems it would be ideal. You could essentially keep the rotors moving at the same angular velocity at all engine RPMs, allowing the same boost level from idle to redline.

Cool stuff, I think technology will continue to make FI more appealing, with far less compromises. Variable geometry for turbo vanes has performed much of the same task for turbos, allowing close to instant boost.

[Rustam]

All other BS aside, it does make sense that you could use a transmission to effectively vary the pulley side depending on the RPM. If a CVT type set-up could be made compact enough, it seems it would be ideal. You could essentially keep the rotors moving at the same angular velocity at all engine RPMs, allowing the same boost level from idle to redline.

Cool stuff, I think technology will continue to make FI more appealing, with far less compromises. Variable geometry for turbo vanes has performed much of the same task for turbos, allowing close to instant boost.

yes, it makes sense to do this...
But I would still prefer a bi-turbo setup.

[onewhippedpuppy]

True, there's no parasitic drag with turbos, if you can make them lag-free and package them efficiently they're tough to beat. Nice to reclaim some of that otherwise lost energy inherent to the internal combustion engine. The new 997 TT has twin turbos with the variable vane geometry, supposed to have nearly instant boost. Yeah, I'll just take one of those.

[Jon K]

Rustam - do you realize that you post 3, 4, 5+ times consecutively without someone saying a damned thing to you or does your feverish attempt of making someone look dumb distract you?

It's not even that - you also send ... 9 PMs to me... as if I am going to read the first one.



OneWhippedPuppy - a company called Holset has been making variable vane turbo chargers for a long while available on turbo trucks.

Some choose to study the material, and others - are just pretentious...

You got the quote wrong - some people choose to sit on their **** all day and read books, misunderstand the points being made, and dictate it to other people on the interweb. Other people actually build cars with applied knowledge and experience - you do not fit into the latter. Thanks for playing.

[onewhippedpuppy]

OneWhippedPuppy - a company called Holset has been making variable vane turbo chargers for a long while available on turbo trucks.

Before I got smart and went back to school, I was a diesel tech for a while at Detroit Diesel, and had the opportunity to train on their variable vane turbos. At the time Mercedes also had the technology on their big diesels, adopted from DD (Detroit Diesel is owned by Daimler Chrysler). Regardless, it's cool stuff, essentially instant boost.

[Jon K]

Before I got smart and went back to school, I was a diesel tech for a while at Detroit Diesel, and had the opportunity to train on their variable vane turbos. At the time Mercedes also had the technology on their big diesels, adopted from DD (Detroit Diesel is owned by Daimler Chrysler). Regardless, it's cool stuff, essentially instant boost.

Yea the truck we tow my friends racecar with is a F250 superduty. The thing only tuns like 4500 rpm absolute max, but makes full boost at like 1200rpm and man does it pull. Pretty sick.