And you guys thought kevins turbo was big...

Well, this is what my buddy is or at least was going to use on his camaro untill he found a manifold setup for running twins
http://i35.photobucket.com/albums/d161/BoosTSi/100_4531.jpg
http://i35.photobucket.com/albums/d161/BoosTSi/100_4530.jpg
http://i35.photobucket.com/albums/d161/BoosTSi/100_4529.jpg
http://i35.photobucket.com/albums/d161/BoosTSi/100_4528.jpg
Here is the link for ebay
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1,1&item=8066556240&sspagename=STRK%3AMESE%3AIT

That's a monster!!! I think i'll buy it :p

I've actually never seen a turbo that big that was internally gated

It would probably take two maybe three weeks to spool even on a stroker.

:eek7: Holy hell that is one massive fuckin turbo! What is that?

Actually if it's the same GT42R on the highest hp Evo VIII, is spools at 3,800 rpm (2.4 stroker). Wonder what it would spool at on a Camaro? I've seen that turbo on a couple DSMs too.

its a gt42r with a hot side ar of 1.01. I could actually fit my fist inside of the exhaust outlet and all 5 fingers in the compressor inlet and I have big hands. the vband of the exhaust is 4" and the vband for the air outlet is 3". Its honestly the biggest turbo that I've ever seen in real life. It has a twin scroll exhaust housing to. It dwarfs the turbos that you find on motors like the duramax and powerstroke. Oh and it weighs in at just over 40lbs. Oh and that can is a full sized spray paint can that barley covers the compressor wheel:)

I don't think that can spool at 3800 even on a stroker. A 35R on a stroker hits 25 psi at 37-3800. My T67, which is a little smaller, reached 29 psi at ~4800 rpm or so. With a 1.01 hotside it would probably never spool on a 2.0 or 2.4 :D That's a big housing, but just right for a high displacement motor.

The Internal seemed odd to me too, but when you think about it, this turbo will still run relatively low boost, since the V8s have 2-3 times the motor we do. And the 1.01 hotside will flow so damn much the exhaust manifold pressure should remain relatively low, reducing the tendency for the internal to blow open.

AMS runs these turbos, you can see them on thier site (www.amsperformance.com), and Shearer makes manifolds for them. Pretty sweet.

OK well heres an interesting question and I know we aren't V8 guys but most of us know turbos pretty well. Hes thinking about selling this turbo and running two smaller ones and he wanted to know what I thought he should run. Looking at compressor maps and such a LS1 needs ~65lbs/min of air flow to keeps its volumetric efficiency or whatever and since he will be running a 383 I figure he'll need ~80lbs/min to reach his goal of 900whp. What two turbos can accomplish this task with good spool up low price and preferably a t4 flange (he can always get an adapter plate) At first I was thinking a pair of super 60s but after looking at the maps they wont put out quite enough at 70lbs/min for the pair. Then I though a pair of 20gs would be cool but they are so damn expensive.

I don't think 80 lbs will be quite enough to do 900 whp. The problem with two turbos at this level is getting something in a T4 frame that isn't too big (~120 lbs combined). Not that being too big is a bad thing entirely, but it will unecessarily increase lag. For example, two 50 trims would flow 100 lbs/min. You would still want relatively large turbine housings, but I'm not familiar enough with T4 housings to make a recomendation. Even with half of a 383 to spool up the turbo, that's half of 6.2 liters, or 3.1 per side. 50% more displacement per turbo than we run in our DSMs. So that's much more exhaust flow to get rid of, and no need to use restrictive housings to spool it up. Not sure what turbos to use exactly, but this is the line of thinking you want to use when making the selection.

Here is what a GT42-Non-R looks like on a Dsm Manny.. Minus the fact it's in a Dodge Colt.

http://thelotspot.com/images/jp/Colt06/DSC00154-1.JPG
http://thelotspot.com/images/jp/Colt06/DSC00159-1.JPG
http://thelotspot.com/images/jp/Colt06/DSC00161-1.JPG
http://thelotspot.com/images/jp/Colt06/DSC00162-1.JPG

I don't think 80 lbs will be quite enough to do 900 whp. The problem with two turbos at this level is getting something in a T4 frame that isn't too big (~120 lbs combined). Not that being too big is a bad thing entirely, but it will unecessarily increase lag. For example, two 50 trims would flow 100 lbs/min. You would still want relatively large turbine housings, but I'm not familiar enough with T4 housings to make a recomendation. Even with half of a 383 to spool up the turbo, that's half of 6.2 liters, or 3.1 per side. 50% more displacement per turbo than we run in our DSMs. So that's much more exhaust flow to get rid of, and no need to use restrictive housings to spool it up. Not sure what turbos to use exactly, but this is the line of thinking you want to use when making the selection.
That being said, do you think it would be better to run two smaller or just the one big one?

I don't want to jack your thread, but I am having the same discussion with the guy that owns the pinto I posted pics of a while back. He wants to run two smaller ones, and I argued that since he has sooooo much displacement (650+ci don't recall exactly) that one would be a better set up. clicky and scroll down (http://www.nolimitmotorsport.com/precision-turbo/turbos.html?Mid-Large) He wants to run two of either the pt-88 or 91 (still up in the air about his power goals). I say the pt-106 would be a simpler solution, and it would get him over the 2400 hp like he wants. I am interested to hear what you think about 2 v. 1 setup Kevin.

I'm not sure which I think is better. I think it really comes down to what your definition of "better" is, and I should also mention I have never had the pleasure of setting up a turbo on a large displacement motor. But I'll think out loud for a bit anyway.

Two turbos can make packaging easier in some cases. Running exhaust piping from two cylinder banks to one turbo can be cumbersome in cramped engine bays. It is nice to be able to use "normal" sized turbos as well, instead of some of these 40 pound monsters. If you are using divided housings however, and want to keep the cylinder pairing intact, you end up using two WGs per turbo, like the AMS kits and most other. WIth two turbos, you're running 4 wastegates. That adds a lot of plumbing and cost.

Single turbo is simpler in many ways. Fewer WGs, fewer moving parts to fail, etc. Plumbing can be more cumbersome, but many poeple pull it off just fine. There is sometimes some concern about the exhaust gasses from the further cylinder bank cooling or losing velocity before reaching the turbo, reducing efficiency, but again poeple are very successful with single turbo setup. Many cars that came from the factory with two turbos end up being converted to single turbo, and that says something.

Lag can be made similar with either setup by properly sizing the turbos. On a really huge motor I would be concered about a single turbine housings ability to exhaust all that displacement effectively. Two turbos may let you run more combined turbine housing size increasing VE. Some of those huge turbos seem like they would be up to the task though. It's not very often I even look at turbos that big... Some of the measurements are just insane :D It's all way beyond my personal experience level, so I can't offer any specifics, and there are no airflow values given so you have to go by advertised max power capacity. It is interesting to note that the turbos are all roughly the same price, so going single saves over 2 grand just in the turbo itself. But of course, anyone looking to make 2400 hp should have a pretty big budget or plenty of disposable income.

It is interesting to note that the turbos are all roughly the same price, so going single saves over 2 grand just in the turbo itself. But of course, anyone looking to make 2400 hp should have a pretty big budget or plenty of disposable income.
Difference in price noted by me. He doesn't care. His money >my money :( There is 100k tied up in that car already, the intake mani alone cost more than my gst. I also thought it was odd that there were no flow maps or numbers of any kind other than horsepower :disappoin (2400+ is kind of a broad range). Thanks for the input as usual.

I wish I could be of more help, but turbos this size are just too far out of my experience range :)

Unless I'm wrong about the turbo being the same one as the one on the highest HP Evo VIII tuned by AMS, they say it should spool by 4,800-4,900 rpm on the street in third gear. Oh and I guess it's a 2.3 liter, no nitrous, andC16. And it's making 903 corrected whp. I think they're trying to get more out of it too right now with cams or something.

(AMS) "The power on the dyno shows full boost just after the 5000 rpm mark but a car always spools quicker on the street then our dyno because of the load difference. Martin is positive it will spool quicker then 5000 on the street.

As far as spool is concerned I am dynoing the car in 3rd gear which will spool a car roughly 300-400 rpm slower on the dyno than it does on the street. We are hitting 30psi by around 5200rpm on the dyno pulls which tells me we'll be hitting full boost at roughly 4800-4900rpm on the street."

http://forums.evolutionm.net/showthread.php?t=174464&page=1&pp=15
http://forums.evolutionm.net/showthread.php?t=181137&page=1&pp=15

vid: http://video.google.com/videoplay?docid=-4871797787757063596&q=ams+evo

http://video.google.com/videoplay?docid=-1874425278109384693&q=ams+evo

IIRC the gt42 on the evo has an exhaust ar of .82 or something, this one is a 1.01 and therefor it slightly bigger

FNA man. 2400 hp? GT42R? Theres a shit ton of big numbers floating around here guys. Definately an interesting thread to read.

That is extremely quick spool for that turbo, I have to say I am surprised. The big variable is the turbine housing/wheel I guess, and those specs we will probably never know. :) That is the same rpm you get full boost at on a T67 with O trim/.82, and on an FP3575 I hear (bolt on T67).

Hey Pr! My bud has a 95 z28 camaro that he is also going to stroke to 383. I told him about that turbo and your friend's plan. He wanted me to ask you how much he wants for that turbo.

Here are two mustangs with turbos. Just in referance to the V8 question. You can tell their size in the videos for the most part

This first one is a single turbo stang 1100 hp
http://inductionweb.com/UndrPrsr2.mpg

And this one is a twin turbo saleen s281 912 hp

http://media.putfile.com/turbostang263

THe second one took a sec to load.

Hey Pr! My bud has a 95 z28 camaro that he is also going to stroke to 383. I told him about that turbo and your friend's plan. He wanted me to ask you how much he wants for that turbo.
I think he got offered a grand for it but they guy wont have the money for a month or something

I think he got offered a grand for it but they guy wont have the money for a month or something

Wow, a grand. I'll tell him about it tomorrow, but I seriously doubts he wants to drop a grand on a turbo. Thanks

Wow, a grand. I seriously doubts he wants to drop a grand on a turbo.

This makes me laugh, considering what poeple will gladly spend a grand on... :) A good turbo starts at a grand, and goes up from there.

Wow, a grand. I'll tell him about it tomorrow, but I seriously doubts he wants to drop a grand on a turbo. Thanks
Well considering its brand new and from a vendor its $1500+ I'd say thats a hell of a deal

Yeah it seems to be a good deal. But he has alot of stuff to do to the car before he turbos it.