www.neons.org

Ok so it's entirely too expensive for most Neonites...but a neat concept if you haven't read about it before...

I try not to push people to other forums for info, but it's informative and 21 pages long so I am not about to put it here... Long story short, car makes the power/torque/spool-up of a stock twin-turbo (or very small single) but with a massive top end... In other words, 20psi by 2800rpm... 310ft-lbs @ 4000rpm / 520ft-lbs @ 5000rpm... and potentially over 700rwhp (still in testing / development). I believe the gut-feeling over on SF is that they will be able to have a monster street car with a massive top-end / drag capability without needing nitrous to spool it up or having to increase displacement...etc... I bet it *could* possibly be applied to a neon...though obviously the placement would be the biggest issue.

http://www.supraforums.com/forum/showth ... p?t=527336

If this is old news for you guys, I apologize... it is an old diesel trick

Sean

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FAIL

Requiring registration for guest visit is sorta draconian.

Could this be some kind of promotion scam?

Gotta drive up those Google Ad hits.....

HEy Naperville is back... How ya been...

No Naperville is a good guy defintally not a scam thing... He probally just didnt know you needed to register to see it..

Yeah SupraForums is weird like that... Really don't care if people aren't interested enough to join the forum... I will take a few excerpts from it and copy it here. Was trying to avoid the copy'n'paste shuffle.

I'll follow this up shortly...

I grabbed a few quotes from the 21 pages of posts... It obviously jumps around a little bit...

















The below video is a HORRIBLE camera angle/mount location...



Anyways, they are still in the process of working the turbo sizing... So the full dyno graphs are not out yet, aka...R&D project, but great way to make the ultimate street car.

These types of systems are neat and definitely seem to work, but they're very complex and expensive. It seems like a single variable vane or variable nozzle turbocharger could yield similar results with much less complexity. I'm not too sure how much advancement has been made in the area of variable geometry turbos, or what kind availability there is, but it seems to be the way of the future for quick-spooling, high HP setups.

VGT is the future of performance turbocharging.

This is a pretty cool idea too......

Hi Naperville!

Just my opinion, but compound turbos are farmer-tech for a street car, unless you are running diesel.
There are so many good alternatves to running a compound setup, there's no reason to attempt it. I guess some people might think its cool, but I don't know any of those people.

VERY common in the diesel world though!!!

Long time no speak!

We'll just have to see how it performs in the long run... of course the whole thing is modeled off of the multi-turbo / insane-psi diesel configurations. Supra guys are constantly looking for a way of building cars with ultimate top-end power for drag purposes while keeping the car enjoyable on the street...without nitrous... I would assume if money & R&D is no concern, it wouldn't be that bad... Its just re-applied technology, I dunno about calling it farm tech though! hahaha... Think about those monster 200psi+ trucks! Their boost pressure exceeds the cranking psi of these motors! lol

DOHCRT -- I'm not familiar with any insane hp variable setups, then again I haven't really done the research on them... any links? I know Porsche has been implementing it, etc...but those are much more reasonable power levels, not the 300-400whp/liter levels.

Precisionneon -- Yeah that concept is interesting and has been out longer, though I haven't seen a lot of the Supra guys jump on the bandwagon honestly... Not sure why, with the cost being so low...

I think the technology is still in its infancy. Once more companies start producing them on a wider scale, the prices will come down and I imagine we will start to see them pop up in the aftermarket. I'm not sure if a VGT could have quite the range of a compound setup, but it would definitely be less complicated and weigh a whole lot less.

Diesels have no choice. They can't just rev higher to wait for the boost. They have a built in RPM limit. Once a diesel gets to about 4000RPM the piston out runs the explosion and torque takes a nose dive.

Part of the reason VGT is more popular on diesels and hardly available on gasoline setups is that EGTs are too high on gasoline. Apparently the materials used in them wouldn't last too long in a gasoline engine setup. EGT are about 150-250 *C hotter in a gasoline setup.

the same reason a 2000 ft lbs of torque truck only builds 600 hp

I have read this a lot about this and don't really by into the whole egt argumant. There are acutally quite a few guys running vgt turbos on gas engines with zero problems after several thousand miles. The future in gasonline vgt turbos is coming up with a system to easliy control the vanes in some of the current turbos available. There is a guy with a dsm locally with a holeset vgt trubo making off idle boost and 600 hp with the vanes open. Even with them open all the way making the A/R very large there is no lag because the turbo continues to spool effortlessly once in boost. He thought he would be able to control boost by opening the vanes but it did not work, the turbo "spools itself".

Ok, so the technology has been around for 20+ years now and still hasn't caught on for performance/tuner cars. I am guessing it may not be the best choice... Probably many factors... but cost & durability come to mind... I'm sure there are a handful of people in the tuner world that have them working in mild setups...but there must be a reason that all the R & D / Engineering that goes into other stuff has never caused folks to jump on this.