Kurgan

Thats some pretty amazing numbers. Can you answer my questions about the available exhaust housings and A/R sizes? Looking for something undivided.

Mercury

Magnus, you should post the contents of the kit and the total cost for the kit in US dollars.

AJC13B

Mate I know what an a/r is. My turbo is a TA45 and has a 1.05 housing which is equivalant to a 1.32 in a T series turbo. Previously I had a 1.22 housing which is equivalant to a 1.52 housing in a T - series turbo. All on a 13B and I was getting boost before 5000rpm and I never took it over 8000rpm except on the track.

Some people in the US are starting to realise that lag increase is marginal when using a larger A/R but power increase is phenomanal. For a 20B, I would be looking at a 1.22 or similar housing for the street in the GT series turbos....

DiaperBoy

Ok...it isn't that laggy......but..how much does it cost?

magnus

A/R is relative to the family of exhaust housing you are talking about. Kurgan is correct.
Our first hybrid turbo for mitsubishi's utilized a .58 exhaust housing with a monstrous mitsu exhaust wheel. This combo made 525hp to the wheels on a 2.0L piston engine @ 30psi still streetable.

A/R would matter if we are comparing apples to apples. But that does not apply to this turbo, that would be apples to oranges.

Achieving the best combination is the key. Notice how I mentioned that it does not run the standard housing. I you try the standard housing on a 13B I can bet you will be very unhappy. A 20B would be a different story, but I would not speculate until I tried it, I am guessong that this particular compressor wheel would not be enough to support past 20 psi on a 20B.

The foot print is not T04, Its much larger and I use Tang divided housings. This is to aid in the spoolup, each runner is separated into the exhaust housing.

I don't think I can offer it with other housings as I don't know if they will work. I would not want to offer anything that is unproven for sale, my motto has always been to sell only the best after research has proven.

In my opinion, This turbo is very well suited to the 13B, I was thoroughly impressed from the moment we installed it 1.5 years ago. Much time has passed and plenty of information and knowledge has been gathered. Achieving adequate boost control while having extremely low backpressure, and excellent spool time was a big problem that took a very long time to solve. We have had very good results with it as a street turbo and as a race turbo. Now that I am satisfied I can offer it to others who are interested.

Time constraints have plagued me in tryin to speed up production of this kit as well as nominal interest, because people were concerned wether such a physically large turbo actualy did work in this application. People just cannot believe that it is possible. The GT series of turbo's has led people to start thinking differently about actual size and worry more about the bottom line which is real world performance.

My proposed kit will include (FD only)
1 GT42 twin ball bearing turbo
1 321 stainless header
2 Tial 35mm wastegates
1 4" downpipe
Vband clamps all around, additional ferrules and Vband for you to weld onto your midpipe
oil lines
and a water neck eliminator housing for clearance, which also helps in bleeding the cooling system.

The turbo being the biggest most expensive piece of the equation.

All preliminary pricing shows a retail of 6000 US dollars

Let the accusations, comments, praise, whatever, fly

Marco

Kurgan

Magnus, I understand why you offer the divided tang. housing on the turbo. But, with a 20B, it is nearly impossible to make a true divided manifold... I can't think of a way to do it... I'd rather run an undivided manifold on the 20B, but since they are hard to come by (for some reason) I may end up running a divided housing. Also, I'm not interested in running much more than 20psi. I MIGHT run up to 25 on AV fuel, but only on VERY rare occasions (Like when I have to show this mom in a minivan at the stoplight who's boss )

Do you know what the flow in lbs/min or CFM is of this GT42? My VERY rough calculations for my HP goals are in the 89 - 95 lbs/min range.

AJC, I wasn't knocking your intelligence, sorry you took it the wrong way. Its just that with the big footprint and exhaust housing of this turbo, the "smaller" A/R numbers really arent that small. Plus, I plan on building a street car (yeah, I'm insane) and want boost MUCH before 5000 rpm. My goal is to make in the neighborhood of 650 rwhp out of this engine.

AJC13B

Magnus - I was of the belief that the GT42 was released by Garrett this year. In fact a friend of a friend was the first person in Australia to get one earlier this year. How is it you have had one for a year and a half?

Retail on that turbo was over $4000AUD as well at the start of this year and are now worth $3700AUD as per this link: http://www.turbofast.com.au/sales.html

Go here for specs: http://www.turbofast.com.au/GTseries.html

Kurgan - Thats cool

magnus

AJC13B, You are wrong again. I don't have to tell you my sources, or wether or not you can't believe that a turbo produced by an american owned company could have appeared in america first? You may ask Crispeed who was at the IDRC Palmdale final's last year, when we were rebuiding our engine in the pits, what kind of Broken turbo he was fondelling. Please try not to turn this thread into a flame fest, or I won't bother to post on your board.

Kurgan I understand why you would want a undivided housing. But people have run divided housings on undivided manifolds with good results, so I wouldn't sweat that detail too much.

Marco

Mattias

But does it have an internal wategate??

"All turbochargers are twin ball bearing, water-cooled, and have internal wastegate"

And then are there 2 Tial 35mm wastegates in the kit?

Ges im stupid

Kurgan

Magnus, can you PM me with a price for one your large footprint GT42 turbos? Are you able to get them with a Vband exhaust flange welded to the hot side? Right now, I have a custom full 3.5" exhaust, I don't plan on upgrading it at all. Will that be large enough (looking at your 4" downpipe....). Also, can you provide a turbo flange for my manifold or tell me where to get one? If so, give me a price on that too.

Thanks a ton!

AJC13B

Mate if you want to be like that, good luck to you. I asked a pretty simple question, all you had to say was "Its been out in the US for a while".

I think its a valid question considering the GT35/40 should have been released before the GT42 (Considering it is the model before it) yet the GT35/40 seems to only be hitting the US scene now.

If you think I am flaming you and don't like it, theres the door. If you can't handle a direct question, thats not my fault.

magnus

The twinbb GT series turbos have been available through the US motorsports division of Garrett to anyone who had the money to pay their exorbitant prices, we have been using them for over 5 years on a particular team of roadracecars we tune and maintain. You had to have a motorsports team and a lot of dough to buy before, now they have made them available to everyone.


Next time you may want choose your words more carefully if you want it to sound like you are asking me a direct question, that there sounds like you are calling me out.

black99

Magnus, you guys have a website don't ya? Can I have the URL??


Edit* Nevermind I found it myself. Thanks

http://www.magnusmotorsports.com/

AJC13B

Fair enough, that wasn't too hard was it?

Fair call, it didn't come out to nice, apologies.

Kurgan

Magnus. PRICE!

SPEED_NYC

iTrader: (3)

marco, why does the inlet on paul's turbo look so much smaller than the one on jeffrey's car?

you gotta do better than $6K on the price for me, i've been talking to you about this kit for months now, i've been trying to give you $$$ for it, but it was 'never ready'

when is the next time you guys are gonna be racing in NJ?

magnus

Hey sorry guys, been busy working on some stuff.

SPEED: We're ready now :-) but that turbo your looking at in the picture in question is actually our old turbo that we didn't have much success with, then spawned the 42. That is a TV-81 comp.

AJC13B your forgiven

Price we're looking at right now is 6000 bucks, I'm working to get that price down through the use of different suppliers.

Mercury

I've started saving. What is diff does the small and large turbo manifold make? What ignition coils do you recomend?
-M

amemiya

ok that test was in 4th gear that is not saying much for it's spool time what does it do in 2nd gear is the question? I'm hoping not to get anymore lag than with my 60-1 70comp A/R/ 1.15 turbine A/R. spools at 5000 rpm with old (blown) motor. The new motor is bridge ported ( just waiting on haltech).

magnus

That roll on test was with the large exhaust housing, not manifold. Spool times are quicker on the small housing.

In first and second gear there is absoulutely no traction that is why you do a roll on test in 4th.

Mr rx-7 tt

iTrader: (5)

Is 6 grand the best you can do..?

LBMR2

ALL HAIL THE KING ! Marco you are the BIG SWINGIN DICK from the NORTH !

enfini3

no tracktion sounds like a under statment with that turbo.

Bluem

how much power can that thing put on the ground???

Mr rx-7 tt

iTrader: (5)

It seems that at 17 psi you'd be putting down about 485 rwhp..? The power doesn't seem to be substantially more than a GT 3540 or T-78....?