New twins being released

[pavo335]

lmfao i was looking for this thread earlier.

I have been following that topic here and elsewhere. forget the vishnu crap this has quality written all over it. super keen to see the final product.

Steve I think the big single would be much more difficult to get into a RHD car, these chaps are looking for a log mani which should free up more room than the fftec mani.

Well my fat little fingers are crossed, and i'm trying to be a very good boy so santas fills my stockings this year

[flinchy]

I had a read of the whole thread on the other forum. It seems 100% legit to me, he's much more actively engaged with the community than a certain company that is making n52 headers an allegedly trying FI.

It's going to be interesting seeing people go massive twins and trying for 50% more peak power than current.. Extremely exciting times in the n54 world soon

[1q2w3e4r]

Think Kenny's been banging on for about 2 years about turbos. A big single beats two smaller ones in this type of application (peak power/drag racing).

[JB4-335]

Originally Posted by 1q2w3e4r

Think Kenny's been banging on for about 2 years about turbos. A big single beats two smaller ones in this type of application (peak power/drag racing).

Yeh I heard Kenny was jumping all over these new twins.

[MrBlonde]

Originally Posted by 1q2w3e4r

Think Kenny's been banging on for about 2 years about turbos. A big single beats two smaller ones in this type of application (peak power/drag racing).

Hee hee, yep Benny, I'm always a big believer in a big single over smaller twins. For all but circuit racing it's a better setup in my opinion.

[flinchy]

Originally Posted by MrBlonde

Hee hee, yep Benny, I'm always a big believer in a big single over smaller twins. For all but circuit racing it's a better setup in my opinion.

What about daily?

And what about the plan for these stage 3 twins to have a few options (apparently even big enough options to make stupid power levels?

Just curious to see what your thoughts are?

Also, drifting would favour response over outright power no?

Pretty much leaves the strip as the big single dominant area?

[1q2w3e4r]

You would just use the RB or twin setup

Not sure how much reliability people think you are going to get when you increase trap speed to 120+ mph on a car that traps 105 ish stock.

[Justin@ADVAN Performance]

Originally Posted by Drawn05

http://www.e90post.com/forums/showthread.php?t=746897

I take it these stage 3 upgraded twins will most likely not fit our RHD? Would there be enough space with our steering column.

Definitely keen buy myself some for Christmas!!

Hey mate,

as you would know I follow these kind of developments very closely.

I hate to rain on everyones parade but it's highly unlikely that the "stage 3" upgrade will work on our RHD vehicles.

I have had a good look at what little space there is to work with, in lieu of the steering column etc. and to say that it's tight, is an understatement.

I was dreaming about installing GT2860R-5's on my car over 6 months ago.

However whilst "young" Chris did the OE turbo R&R on Clinton's 135i, he did a mock up of a twin -5 install (as there were a couple of used 2860's in the engine room) and the steering column really is a huge obstacle, that the US guys such as Vargas Turbo do not have to overcome.

I am not saying unequivocally that it's impossible, but as Chris has told me on a number of occasions it would only be remotely possible, if you did a high mount and low mount set up, even that would be messy as hell.

[pavo335]

Originally Posted by Justin@ADVAN Performance

Hey mate,

as you would know I follow these kind of developments very closely.

I hate to rain on everyones parade but it's highly unlikely that the "stage 3" upgrade will work on our RHD vehicles.

I have had a good look at what little space there is to work with, in lieu of the steering column etc. and to say that it's tight, is an understatement.

I was dreaming about installing GT2860R-5's on my car over 6 months ago.

However whilst "young" Chris did the OE turbo R&R on Clinton's 135i, he did a mock up of a twin -5 install (as there were a couple of used 2860's in the engine room) and the steering column really is a huge obstacle, that the US guys such as Vargas Turbo do not have to overcome.

I am not saying unequivocally that it's impossible, but as Chris has told me on a number of occasions it would only be remotely possible, if you did a high mount and low mount set up, even that would be messy as hell.

Justin was that with a log style manifold or assuming an equal length manifold?

[Drawn05]

Do we know what is the largest turbo size that can fit in the space, for twins? There must be a turbo that offers a decent gain for the cost. Is it worth discussing the situation with someone at Garrett etc. to get their perspective?

A big single is obviously a definite solution to the problem, but that isnt going to row everybody's boat.

[MrBlonde]

Originally Posted by pavo335

Justin was that with a log style manifold or assuming an equal length manifold?

Equal length is overrated for turbo applications. It's rarely an option given space limitations.

[MrBlonde]

Originally Posted by Drawn05

Do we know what is the largest turbo size that can fit in the space, for twins? There must be a turbo that offers a decent gain for the cost. Is it worth discussing the situation with someone at Garrett etc. to get their perspective?

A big single is obviously a definite solution to the problem, but that isnt going to row everybody's boat.

When we say "big" here we're talking about GTX30R or GTX35R. Those are not large turbos.

[JB4-335]

Originally Posted by MrBlonde

When we say "big" here we're talking about GTX30R or GTX35R. Those are not large turbos.

+1 Those turbo's are still puppy's but still a great turbo.

[flinchy]

Originally Posted by MrBlonde

When we say "big" here we're talking about GTX30R or GTX35R. Those are not large turbos.

Would that not be a bit excessive?

Or are they a relatively normal size?

(<is still learning about turbos)

But a quick google of the gtx30r in various single configurations making 500whp on evo's and sti's sounds pretty sizeable?

[MrBlonde]

Originally Posted by JB4135

+1 Those turbo's are still puppy's but still a great turbo.

Edwin totally, I think they are the absolute best turbo choices for an inline 6 engine around 3 litres (street cars or street/strip fun cars). A great balance of response and power potential. You can select from some hotside choices to tailor to what you want.

[Justin@ADVAN Performance]

Originally Posted by pavo335

Justin was that with a log style manifold or assuming an equal length manifold?

Hey Pavo,

that was based on an exhaust manifold with equal length runners.

I know there are many that will say the gains are not worth the added complication, however Chris is simply not prepared to do a log manifold.

According to him there is a right way and an easy way of doing an exhaust manifold and for Chris, a log manifold is most definitely the latter.

We had a long chat on Saturday regarding the merits, of a true equal length "long runner" manifold on a big single application, based on that I am of the belief that attempting to do "upped" twins on a RHD N54, will be fraught with complications and will require many compromises.

[sparoz]

Kenny, Justin, how much can the chasis handle though on a track even with upgraded suspension? Surely, anything much higher than 350rwkw would be too much? If anything I just want a solution to tune it so that it will run 350kw to 7200 without meth, and RB seems to be able to do that?

[Justin@ADVAN Performance]

Originally Posted by Drawn05

Do we know what is the largest turbo size that can fit in the space, for twins? There must be a turbo that offers a decent gain for the cost. Is it worth discussing the situation with someone at Garrett etc. to get their perspective?

A big single is obviously a definite solution to the problem, but that isnt going to row everybody's boat.

Hi Steve,

the GTX2863R's that "Vargas Turbo" have proposed for their "Stage 3" kit are capable of making big power, on paper somewhere between 800-950 engine horsepower.

Of course they could have opted for slightly smaller GTX2860R, however once you step up into the GT28 range of Garrett turbochargers, the physical dimensions of the turbocharger is just so much larger than the little TD03's we have grown accustomed to seeing.

As I have said previously, the yanks do not have to build their turbo choice and manifold design around the space constraints, associated with our RHD steering column.

Something else worth considering too, is that the turbine wheel on the individual GTX2863R is not being driven by the exhaust gas pressure of a 3.0 litre engine.

As such the spool speed and responsiveness of a single GTX3582R may not be too dissimilar, to a twin GTX2860/63 setup.

[Justin@ADVAN Performance]

Originally Posted by sparoz

Kenny, Justin, how much can the chasis handle though on a track even with upgraded suspension? Surely, anything much higher than 350rwkw would be too much? If anything I just want a solution to tune it so that it will run 350kw to 7200 without meth, and RB seems to be able to do that?

Hey mate,

you would not see 350 rwkW without Methanol injection on RB's.

If you prepared to run E85 and had fitted a very efficient intercooler, perhaps you would see close to 350 rwkW.

Your point about over powering the chassis is valid, however with a properly sorted suspension and R888's perhaps 400 at the wheels could be put to the ground.

That being said I suspect those that are chasing big dyno numbers in the US, are doing so mostly for 1/4 mile racing, rolling race & airstrip events etc.

[flinchy]

thread revival time!

they (Vargas) just started up the first stg 3 car successfully

not too long to wait for a tune!

stage 2 still a tad away