Turbo selection help

[tvanlant]

Well I think I'm finally going to break down and put a larger turbo on my 87 GLHS. I've been looking at some compressor maps and it looks like the t3/t4E 46 trim is about right, but I don't know since I've only had experience using the stock turbos. I know Cordes put a 50 trim on his omni and says it works good, but looking at the maps, it looks to be the 50 trim is too large. I'm using 85% for Volumetric efficiency, 2.27 pressure ratio, and 6200 RPM for the maps. Let me know if I should change something.
Here is what I have:

2.2, A555
Ported 782 Head and manifolds
2.5" S/V and exhaust
3 bar, +40s, Mopar ChEM cal, 18 psi, fmic

What turbo would you recommend, and what kind of lag do you think I can expect?
I can't find a map for the super 70, but the super 60 looks to be too small. Any opinions appreciated.

[tryingbe]

How mcuh hp?

[Dave]

You would be fine with the 50 trim that Cordes is suggesting. I'm using a Super 50 trim with a stage 2 exhaust wheel and a stock head. The spool up is honestly comparable to a T2 Garrett. It's not bad at all. Plus those turbos can produce some very respectable numbers...

[turbovanman²]

What are you goals and HP. A super60 is a great bolt on turbo for more power and not much lag.

[tvanlant]

I really don't care what HP number I put down on the dyno. I just want a good all-around turbo to match my setup. Whats the benefit of the stage II wheel? I'd like to stay with the stage I wheel if possible becaue I already have a stage I .63 exh housing that I would like to use to save some $$. You guys don't think the 50 trim would be too lagy?
I didn't think the super 60 was much larger than the stock unit. Would it better match my setup than a hybrid?

[cordes]

I really don't care what HP number I put down on the dyno. I just want a good all-around turbo to match my setup. Whats the benefit of the stage II wheel? I'd like to stay with the stage I wheel if possible becaue I already have a stage I .63 exh housing that I would like to use to save some $$. You guys don't think the 50 trim would be too lagy?
I didn't think the super 60 was much larger than the stock unit. Would it better match my setup than a hybrid?

What are you going to be doing with the car? If you want straight line performance, I would go tfor the super 50 trim hybrid, and definatly a stg. II wheel. Otherwise, I would go for a S70 from TU.

At 18PSI or so, I think you will certainly see an advantage of going to a stg. II wheel even in a 2.2. You should be able to run 22-23PSI on pump gas with a good cal and a good IC in the car.

[tvanlant]

Well, the car is my daily driver, gets raced on the street alot, and gets raced at the track alot (all straight line of course). I see the TU super 70 is good up to 350 hp. What would be the benefit of the hybrid 50 trim over the S70?
I've already got a stage I .63 housing. Would I be hurting myself by sticking with the stage I wheel just so I could use my housing?

[cordes]

IMO the stock turbine wheel would be a restriction at 350HP for sure given that the exhaust etc. was already free flowing. I like the hybrid at 350+ for sure as it leaves a little room to grow, but also gets the job done around town.

In all reality if it is going to be a daily driver, I cant see pushing a motor that hard very consistantly and expecting things to live indefinatly. 300-325HP is about the limit of what I would want in a DD for my budget. For that I might opt for the S70 to make the installation easier and to have a slightly quicker spool.

[mo' parts]

im pretty sure with a s-60/s-70 turbo ( and prob. a couple t4 wheels in stock covers)were only looking at 3-400 rpm of spool differece between a .63 stage 1 and 2. although the max flow is a different story, lol, quite a few h.p. there.
as usual, money and hp goal is important. with these numbers we can better suggest a turbo, along with what type fmic you have.

all in all, if you want it done right, its best to purchase a new unit from one of our vendors and get the warranty

[Chris W]

Moving to a hybrid will require more modifications to be done to your vehicle. That's all great if you have the time and the money. For your application though, I recommend obtaining a Super 70 and using your .63 A/R turbine housing. The Quick Spool option is a must since you are running the 2.2 and a stick car. Think about upgrading to the 3" swingvalve in the future to enhance spool up and overall HP. Otherwise, contact me at 602-762-6678 so we can go over your options a little further.

Thanks!

Chris-TU

[tvanlant]

Alright. Thanks for the help everyone. Although I'm not afraid of the modification required to do the hybrid, I think I will go the super 70 route since I really don't plan to make it past 350 hp. What stage wheel should I go with on the S70?
As for my goal, I don't know about horsepower, but I would like to run 12.30s or so. My fmic is a treadstone (uses a spearco core).

[turbovanman²]

Either go with Chris's advice or sell the stage I turbine housing and go stage II with the .63 housing of course.

[boost geek]

You would be fine with the 50 trim that Cordes is suggesting. I'm using a Super 50 trim with a stage 2 exhaust wheel and a stock head. The spool up is honestly comparable to a T2 Garrett. It's not bad at all. Plus those turbos can produce some very respectable numbers...

Hey man, you have the turbo I want to get! Super 50 with a stage 2 wheel. Just a matter of time, I'll get one from T.U.

[Dave]

Hey man, you have the turbo I want to get! Super 50 with a stage 2 wheel. Just a matter of time, I'll get one from T.U.

It's a good turbo, man. Everybody told me without an intercooler it would be an iffy ride. IMO it's fine. It's a tad laggier than a stock T03 Garrett, anywhere from 0-6psi in a low gear it's hard to get it moving, but once past it's like trying to stop a flying dumpster!

That's just my suggestion, but a Super70 would be a great turbo for your goals. I plan to see how retarded I can go with the stock bottom end.

[2.216VTurbo]

Your modification list doesn't specify, are you goinjg to the 300 HP level with the stock LW rods that came with your S car

Long live red GLHS's

[tvanlant]

Haha, no, the LW rods and pistons met their maker along time ago. I've got TIIs and wisecos.
So the Super 70 with stageII wheel and .63 A/R it is then? Anyone disagree?

[Chris W]

Haha, no, the LW rods and pistons met their maker along time ago. I've got TIIs and wisecos.
So the Super 70 with stageII wheel and .63 A/R it is then? Anyone disagree?

Since 350HP is achievable with the stage 1 there is no need to increase your cost and lag time by going with a stage 2. If you still have extra cash left over invest it in a 3" Swingvalve.

Chris-TU

[MiniMopar]

I have a TU S70 with the quick-spool option, .63 housing, 3" SV, DP, and full 3" exhaust with an UltraFlo muffler. It has a bit more lag than the stock Garrett had on my CSX when it had the more restrictive exhaust on it (stock DP, Catco cat, 2.5" pipes to a Super Turbo muffler), but it is not bad. I just have to learn to drive it differently. It actually feels just like getting into the CSX after a long winter of driving my old 88 Shadow (2.2+Mitsu turbo). You get lazy in the feet and it takes a bit to adjust...then you remember that you don't have to shift at 4500rpm and everything is good.

The boost comes on more sanely too, not like getting kicked in the pants and lighting up the front wheels. I got full boost (18psi at the time) around 3k, IIRC (I have it set to 7psi while the Blizzaks are on), and it pulls like a raped ape to the redline and beyond. I love it.

Edit: I should add that the Daytona has a 2.2L with a triple-core IC, an FM ported intake manifold, FM ported exhaust manifold, and a ported head. It's crucial to get the airflow optimized when using a bigger turbo...this will help the lag situation. I really feel like I have a well-balanced setup for "spirited" street use. Haven't taken it to the track yet.

[tvanlant]

Did you have the stage I or the stage II wheel on the daytona?

Chris, how much more lag is there between the stage I vs II wheel? How much power is there between the two?

[turbovanman²]

From reading and what I have driven, I think the stage II would be the way to go and lag wise, not much different than stock and the big reason is we always say we only want X amount of power but then we want MORE after a few days, weeks,