Hello guys,
I'm trying to keep this techincal and would appreciate any help.

I have been trying to find information on using a T3 60-1 on a B20B high comp.
I checked the flow maps and found it would well with in its effecinece range for no matter how much boost I would want to run (Being 10psi)

The real question is from expereince has anyone used one and what sort of spool up RPMS I would be looking at.

My B20b with LS manifold makes peak torque around 5500 rpms (I had it on a dyno).
My goal is to broadin that torque curve to red line if possible using force induction. I'm looking to get full spool up around 3k and would need enough breath to make it to 7,200 Red line.

When I ran the numbers it looked like the T3 60-1 would work. I was looking at using the turbo off of a 87 Thunderbird I cant remember the trim's for sure but there is two different ones, one for auto and a bigger one for manual.

Please give me any advice you can and thanks.

 

Where you make peak tourqe now isn't going to mean anything at all once you add forced induction. 10lbs with a 60-1 will make it a completly different animal. What are your actual compression numbers? High compression is a broad term. What pistons and rods? With and high compression boost setup your number 1 concern should be how good is your Tuner.

 

Apologizes, when I said B20b high comp I mean JDM B20b 9.6:1 engine.
I thought peak torque would have a relation to turbo spool, as when I'm off boost the engine would be under its own power.
I'm just trying to shoot for full torque to redline I want a nice broad powerband.

 

If you want full boost at 3000 you're going to have to look much smaller than a T3/60-1

 

I have a Saab t3 .48 but was told its to small. My goal is 250whp+ but more importantly I want torque and want it to redline

 

Fork the cash out for a name brand turbo like me. At 4lbs and redline at 5k, losing power gains at 4k, it has a lot of power UNTUNED. I'm going to guess 250-260 whp on my setup.

I know mine is a b18b1, but with your 9:2:1 compression, your engine is pretty much the same.

 

You're boosting a b20 it won't carry torque to redline without cam upgrades and even then it will still nose dive. It's a 4 cylinder engine what's the obsession with torque. They have non to begin with. 60-1 will be laggy fr that motor and the Saab turbo is way t small. Look for something like a 50 trim

 

^^
I agree

I had the 60 trim and spooled wayy late. By the time you hit full boost, it was time to shift..
My goal was 250-260hp and im using a .42/.48 super 60 and im maxxing out the turbo, but im making 255/241 with the 8.8 B20 with P8R, so figure 8.2 with HG.

If i can reach 255 with such low comp, then the super 60 will be a quick spooling for your goal, BUT if later on you want more, then the 50 trim is what i would use.

Dont look at PSI as what is determining your power goal.. your tuner will know what PSI is safe and effective for your peticular set up.

Edit: as u can see by my sig, im trying to get another block for a higher comp build.

 

The 60-1 will be very laggy on that b20. I ran one on a ls and it didn't make 10 psi until just about 5500 rpm. By 4500 rpm it only had 4 to 5 psi. Now with the extra displacement of the b20 you can bring my numbers down a few hundred rpm but still not too much.

That thunderbird turbo is a good choice for your goals. My other suggestion is a 57 trim but with thr. 48 exhaust ar. Now some people will very much disagree with the smaller exhaust housing but I've done it and was very very happy with it

 

This is the specs for the Saab turbo I have 42/.48 A/R.
There are two options of Tbird turbo, I only know the auto has an .48 A/R turbine housing which would be the same as the saab turbo right?
The manual version has a .63 exhaust side, would this be to big?

 

Retracted

 

just get a garrett 50 trim and be done with it

 

this

 

http://www.youtube.com/watch?v=LN98rXiZHWs

tuned today on 7psi

 

Only reving to 5K. Are you even in boost at all? I see no boost gauge to show the spool characteristics.

 

http://www.youtube.com/watch?v=J1kJHkQrrnM

I see full boost around 4500-5000rpm I think. Here is to ~6000rpms

 

I ran a t bird turbo on a mini me I had two years ago. it seemed to have similar spool characteristics as a ebay "57" trim but without being able to make the same power lol. if you want something quick spooling do a evo 9 16g on it with a well made manifold. it will build full boost at 2500 or so. my ls with a evo 8 16g started building boost under 2k and throttle response was instant. great for a d.d. or auto x car.

 

I think you're confusing turbos, because a Saab turbo is not a 60-1.

 

Yea they are far from the same turbo. The 60-1 is pretty close to twice the flow of that saab snail, though it might be a 60 trim I don't remember for sure. Both the saab and tbird turbos should be straight t3 and the the 60-1 is either a t3t4 hybrid like the one I have or a straight out t4. I believe they are 58 or 59mm inducers and flow 60 lbs/min

 

I looked up the specs last night,
My saab turbo is T3 .42/.48 a/r for sure.
The auto Tbird turbo I was looking at was T3 .60/.48 A/R
The Manual Tbird turbo is T3 .60/.63 A/R

From what I was reading in this thread and other sources I'm thinking the .60/.48 Tbird turbo would fit my goal. Is that sound right?

 

When I said same I was meaning the exhaust side, the auto tbird being .60/.48 and the saab one being .42/.48

 

Your getting confused here..... for starters you are ignoring wheel size and only going by total volute size of the housings.... this does not tell you much.... both of the T-bird turbos and also the saab turbo are going to be pretty small for your application... the .60/.63 t-bird turbo would be the best of those 3 options, but the wheel size is still pretty small.... ~45mm? or so....

Your best bet would be to sell all 3 (if you have them) and get a garrett 57trim for about 600 bucks new they are running I believe.... this would be the best option. However if your cheap and want to cut corners the .63/60 t-bird turbo would have a nice power band, but really 260-275whp is about all your going to get.

 

250 whp was my ultimate goal, I was just wanting to size the turbo so it would be in its effeinecy and also have a quick spool time. I get what your saying about wheel sizes. I understand now what everyone was talking about.
The other thing is I'm using a S4c Transmission so im normally around 3-3.5K rpms at a cruise and I was thinking a nice small turbo that could spool fast would give a more liner power band and great torque delivery.

 

i wouldnt use any of those turbos with an s4c on a b20. since you are always at a higher rpm get a t3t4 with a .63 exhaust housing. i understand wanting quick spool is important, but it sucks to drive around in boost all the time. with that trans and 2.0L displacement one of the smaller turbos will make a few psi even with a moderate amount of throttle. i think you are going to find the s4c will be a pain in the *** when you run out of gearing with lower rev limit of a novtec engine and/or have traction issues...

 

heres a map for a T3 super 60 .42/.48 for 350hp, 2.0L, max rev 8k, peak power 7k, max boost 4400rpms, min boost 2000 rpms.
Its a quick spool but as you can see, it falls on its *** after 6000 rpm