gt3076 vs gt3582 ??

[mikecentola]

So I've been back and forth between which turbo that I want, and I'm still unsure as to what the best will be for what I want. Both turbos would be from Forced Performance and would be their HTA models. If I went with the 30r, I'd get a .63 A/R hot side, and if I went with the 35r, I'd go with a .82 A/R hotside.

My goals are 500whp on e85. The motor is going to be stroked (BC 91mm), sleeved and bored to 90mm, with 9:1 compression.

I guess my main question is can I do 500whp on the 30r? I know the 35r could do it, but we're building the car for drift, and I don't want it to be too laggy.

Thoughts?

[ajp11]

Comment removed so as to not offend muckman's delicate senses. Most of it is quoted below in his post. Good luck with the turbo selection mike

[Muckman]

when I had the 35r on my civic, it spooled up at about 3800 rpm

A 35r didnt spool at 3800rpm on your civic. How do I know? I have a smaller 30r turbo on a 2.0L GSR that doesn't spool until ~5500 depending on how much boost. Unless you have a 3.0L engine in that civic, 3800rpm is impossible.

which gave me an 11,000 rpm rev range at full boost.

11,000 rpm rev range at full boost? so 11k + 3,800 means you reved to 14,800rpm? Wow you must own a F1 Honda.

It was okay, but the 30r building up at about -400 rpm really helped

30r? didnt you just say you had a 35r?

Haha I have never even ridden in a car with a turbo that large.

Again, didnt you just claim you had a 35r?

either way it will be nasty

This is the only truthful statement.

Wow that is the most bullshit Ive ever seen in 1 post.

[zmainiac]

Well the question is how much boost you want to run to make the power. the 30 will get there but it will be at 30psi, whereas the 35r will make the power in the low 20's. you can always get a higher gear for the rear end if your woried about spool up and you can tune for quicker spool up also. i don't think that you want to be drifting at 7500 rpms at 30 psi for too long. anything goes wrong and your motor is done. Ceramic bb will cut the spool up 400 rpms if you can afford it. My buddies made 409 whp in the mid 20's psi wise with there sr20 with a gt28r

[ritfordprobe]

I am surprised at your exhaust housing choices. If I were you, I would do the .82 on the 30r, so that it pulls hard up top, and then a .63 on the 35r, so that it spools faster down low.

How high are you going to be revving your car out, and what sort of power do you want down low?

[ritfordprobe]

Wow that is the most bullshit Ive ever seen in 1 post.

He was making a joke, hence saying "i have never ridden in a car with a turbo that big before"

[Sileighty]

This is the only truthful statement.

Wow that is the most bullshit Ive ever seen in 1 post.

i'm pretty sure he was just being sarcastic. i thought the same thing you did the first time i read it.


here's a link to zilvia.net:

http://zilvia.net/f/tech-talk/254916...r-sr20det.html

that guy steveshadows seems to be a pretty popular tuner in socal. if you look up his posts, he has a ton of dyno graphs with a bunch of different setups.

[ajp11]

haha holy shit....it was a joke. Sarcasm is hard to send accross the internet, but damn. I thought I exagerrated enough to make it quite obvious!

[Muckman]

The guy asks a legitimate tech question and you make up a bunch of bullshit? Thats real helpful.

[Red944]

The guy asks a legitimate tech question and you make up a bunch of bullshit? Thats real helpful.

Hello, and welcome to Roclife

http://www.roclife.org/forums/showthread.php?t=90151

[ajp11]

Haha chill out man, I was simply remarking that I dont think a lot of people on here will be able to answer that from experience. Some will be able to and thats great, but many won't. If it offended mike in any way I'll of course take it down. But seriously, he asked a legit tech question, and you only posted to try and rip my sarcastic statement apart. Real helpful.

[timster]

Centola, just get a turbo large enough to suck in a fully grown Dachsund. It won't do much for performance, but it would look siqq.

[mikecentola]

I am surprised at your exhaust housing choices. If I were you, I would do the .82 on the 30r, so that it pulls hard up top, and then a .63 on the 35r, so that it spools faster down low.

How high are you going to be revving your car out, and what sort of power do you want down low?

Well I think we're going to be revving the car to 7500 max because at 8000rpm our piston speed will be 4700FPM. Remember that we'll be around 2.35L with a 91mm stroke and 90mm bore.

I need 500whp or more with a nice fat torque curve ( no, I'm not putting an Lsx in there, Brad).

i'm pretty sure he was just being sarcastic. i thought the same thing you did the first time i read it.


here's a link to zilvia.net:

http://zilvia.net/f/tech-talk/254916...r-sr20det.html

that guy steveshadows seems to be a pretty popular tuner in socal. if you look up his posts, he has a ton of dyno graphs with a bunch of different setups.

Yeah I actually came across that guy this morning when I signed up on the site. He seems to say that a 3076R will do 550whp on the very high side.

[mikecentola]

oh and no worries about the jokes. if any of you guys spent time around tm here you'd wonder how we got anything done.

[ritfordprobe]

If you have a 35r with a .82, even with a 2.3L, you will still be laggy. It is a great drag racing setup, when your shifts keep you above 5k the whole time, but for your needs, I am not so sure that will be the best.

I am not sure of 500 whp on a 30R, but that will be your best spool/power combo I think. Tons of people have great success with that, and if you look at Cory's car, he still went 10.8 with a 30R, so it definitely puts the power down. You may want to consider the .82 approach with the 30R though, but the guys at FP will be able to tell you better than I can.

On my 2.4L, with a turbo about 10 lb/min less than a 35r, I had full boost around 4k or so.

--mark

[gsxr1999]

t25 ftw.

[lkailburn]

t25 ftw.

LOLLER

i vote for the 30R with a .63 hotside and lots of boost

-Luke

[mikecentola]

What are the benefits of going with the .82 on the 30R vs .63 ?

[ritfordprobe]

Well, the .82 is going to take longer to spool, but flow a lot more up top and make more power. The .63 will spool faster, but make less up top, since it will be a restriction when you are moving a lot of air. I think since the 30R spools up significantly faster than the 35r, it would be worth the few hundred rpm in lag going with the .82 on the 30R, make more power, and still probably spool up faster than the 35r, even with a .63 AR housing on it.

Just my 2 cents. I know that when we were experimenting with different housings in like 2005, the .82 pulled SO HARD up top, compared to the .63, and with the 2.4L moving it, it was within 3-4 hundred rpm difference to full boost.

And you have to remember when doing these things, you may have more lag to get to full boost, but your power still ramps up during that whole time you are spooling.

[gsxr1999]

keep in mind, what works for drag racing may not work for drifting. i think you're going to want more mid range than top end power. i hate to suggest this, but check out what the pro drifters are using for their setups.

[mikecentola]

Well, the .82 is going to take longer to spool, but flow a lot more up top and make more power. The .63 will spool faster, but make less up top, since it will be a restriction when you are moving a lot of air. I think since the 30R spools up significantly faster than the 35r, it would be worth the few hundred rpm in lag going with the .82 on the 30R, make more power, and still probably spool up faster than the 35r, even with a .63 AR housing on it.

Just my 2 cents. I know that when we were experimenting with different housings in like 2005, the .82 pulled SO HARD up top, compared to the .63, and with the 2.4L moving it, it was within 3-4 hundred rpm difference to full boost.

And you have to remember when doing these things, you may have more lag to get to full boost, but your power still ramps up during that whole time you are spooling.

Cool. Thanks for the help, Mark. I'll go with the .82 A/R hot side and the 3076R HTA. Should be good for 500whp on the upper end.

[Brent_Strong]

You really really really should look into getting a 5.3 LS(whatever) and slapping a set of rods and pistons in it. Do a simple single turbo setup and make any sort of power you want...

No matter what you do to your 2.3L, it isn't going to have shit for torque until like 5k. Then you have to shift at 7200-7500....

[tastynoodles]

keep in mind, what works for drag racing may not work for drifting. i think you're going to want more mid range than top end power. i hate to suggest this, but check out what the pro drifters are using for their setups.

thats what i was thinking too. wouldnt it be better to have a something to spool more down low then up top?

and yes t25 ftw lulz

[mikecentola]

You really really really should look into getting a 5.3 LS(whatever) and slapping a set of rods and pistons in it. Do a simple single turbo setup and make any sort of power you want...

No matter what you do to your 2.3L, it isn't going to have shit for torque until like 5k. Then you have to shift at 7200-7500....

An LSx swapped project is definitely in our future. Maybe next year in a different chassis. For now, we'll see how this runs...

[ritfordprobe]

Cool. Thanks for the help, Mark. I'll go with the .82 A/R hot side and the 3076R HTA. Should be good for 500whp on the upper end.

Confirm with both Rick and FP, but I am pretty sure that will net you the best results for your purpose

[confused280z]

Why not see if you can get both the .63 and .82, even full price housings are pretty cheap.

An LSx swapped project is definitely in our future. Maybe next year in a different chassis. For now, we'll see how this runs...

coughs30cough

[ritfordprobe]

BTW, if you get this car done this year, we are going to have to see how they match on against each other on zee highway!

[Cavi Mike]

You really really really should look into getting a 5.3 LS(whatever) and slapping a set of rods and pistons in it. Do a simple single turbo setup and make any sort of power you want...

No matter what you do to your 2.3L, it isn't going to have shit for torque until like 5k. Then you have to shift at 7200-7500....

Way too much piping to run a single on a V8, not enough room for twin and 500whp is not a lot of horsepower for a 2.3L. It will probably be making all of its torque around 3500-4000 and will rev to 8 with ease.

[ritfordprobe]

Way too much piping to run a single on a V8, not enough room for twin and 500whp is not a lot of horsepower for a 2.3L. It will probably be making all of its torque around 3500-4000 and will rev to 8 with ease.

Actually, the LS motors are one of the easier things to turbo. The truck manifolds come with flanges ready to weld piping and a T4 or T6 flange on, turbo is right next to the water pump, so one end goes in the IC (less than a foot of charge pipe),and back out the IC (another foot or two maybe), and then the intake manifold has the TB facing forward, so it is right there, not on the side like most 4 cyl or 6 cyl cars, so it's probably less piping then most setups out there.

The only downside I see is complexity, there are not as many "buy it and run it" setups, you have to do a lot of custom stuff, so that is why most people do not do it. It really is one of the most simple setups to get all the power in the world though.

[Cavi Mike]

Maybe in an engine bay that wasn't designed for a 4-banger...