Looking to turbo a snowmobile.

Heard a lot of sleds running these turbos....

http://www.aerocharger.com/technology.htm

They claim no oil feed or return...No lag..


Just wondering if any of you FI guys have heard of this before.


Also anyone running one of these on a car?

 

interesting design, but....



we all know that thats not the main cause of turbo lag.

 

Porsche is already using this turbo technology on the brand new turbo 911. Its proven technology that works extremely well..

 

But they also have variable vane, so that is a huge key to get ultimate spool time.

 

ok I know anything is possible with a deep enough pocket, but how hard and complicated is it to run this type of set up on a regular honda engine?

what is needed to operate the variable vanes?

dont know about the borg warner set up but Iam sure the older variable vane set ups such as the one used on the dodge's werent ball bearing design, when you compare the aerocharger to those turbos its got a big advantage!

 

holset has a huge line of vgt turbos that they run on there cummins diesels. They use a stepper motor. Some are available with something similar to a waste gate actuator. They move with boost to direct the vanes. When boost is low the vanes are closed and at boost they are opened. It has a threaded end on the return to make it adjustable.

 

Ive used a Garrett version of that turbo last year, the standard car ran a T2 turbo to start which had been replaced by a T25 when modified. The engine was an old 8v 1.4 so was pretty laggy with the T25 (full boost 4.5k with 7k limit), eventually the oil seals went on the T25 and i got the oportunity to try out a VNT and it was amazing. I could have full boost (20psi) by 1500rpm and it wouldnt stop pulling till redline. They have a grub screw which adjusts the resting position of the vanes, so you could have boost coming on at 1500rpm or only at 3000rpm. One problem when i had the vanes fully closed and nearly instantanious boost was boost spiking, i think the vanes are a lot less responsive than an average wastegate, running an external wastegate along side this may fix that problem. who knows.

I was thinking of trying similar with my B16 build but i wasnt sure the turbo would flow enough up top, not to mention my previous turbo seems to be as rare as rocking horse sh*t these days.

 

so it basically operates off boost itself, it needs absolutely no wiring or mechanizm to work those vanes? if so thats awesome! most sites say the vanes off these turbos are not capable of working with the heat gas engines produce, specially high rpm engines like the honda's?

 

The turbo i had used a standard actuator and the rod controled the vanes. There was talk of that over here too about the components not being suitable for petrol applications, but a turbo company over here in the UK that builds/rebuilds turbo's said the actual parts used in these were the same parts (part no's) as were used in other standard turbo's. I also didnt have a single problem running it on a petrol car. Im not sure how they would be on a honda, if you could find out how much the turbo's will flow there's your answer.

 

according to the net its actually the vanes themselves that are the problem, apparently the material is too fragile for the use in high temp engines like gas engines

what car did you use it on? whats needed to utilize this type of turbo is it just as straight forward as any other turbo set up? what was like hp,lag,mpg wise?

 

yeah they basically operate off boost. I know the vgt's on diesels don't use wg's but I don't know why you wouldn't use a wg on a gas engine. Concerning the heat issue I couldn't see that being a problem. They are used on the kkk turbos on porsche's, large freight trucks. My buddy has a holset vgt on his dsm for about a year now and it has held up just fine.

 

Please use proper terms for 'turbo lag' and 'boost threshold'. One of them is always referred to as the other.

The bearings help with one aspect while the vanes do the other.

 

I guess my question leans more towards the self contained part as oil feed and return on a sled are quite hard!! Not worried about turbo lag on a sled really!

 

Let me try to inject something called reality here.

1) They only offer 3 kits: one for an ATV, one for a snowmobile, and one for a car - of which only 700 were ever produced.
2) 2-stroke engines have lower EGT's like a diesel, and its a known fact 'our' egt temps can cook VGT tubos.
3) Their car kits are all "Coming Soon", except for the kit offered for that uber-rare collector-only car.
4) Good luck buying just the turbo from non-existant dealers. $500 for an empty mock-up turbo, are they crazy?

In my line of work, there's a term called Vaporware. It describes a product that's nothing but smoke blown up your ***. Until I can even see pricing for a aerocharger that will beat a GT22V (175hp VGT), let alone 500whp, I'm not interested. Given the data that is availible, you'll have to spend $4000 for a pair (turbos only!) to even reach 400whp.


Thank you, but I'd much rather run a twin-screw SC with a jackshaft, or even a less efficient oversized roots-style. At least the SC kits will be a reality.