My New Turbo GT3076R - WG

[eazye2000]

eazy, can you hear your turbo spool? I can barely hear mine and i'm only at 12psi.

Yeah, 12psi you wont hear much. That thing is barely spinning. I hear mine start to 'whistle' after about 15psi. But I also have at least about 20" of inlet piping going to it. At 3", so it kinda quiets it down I think.

This is what I got from ATP last night. Let me know if I should go for it, or just sell this one, and get a different one.

Eric,

It would be this housing here, except custom made for your turbine wheel:

http://www.atpturbo.com/Mercha...e=HSG

You can add v-band via this:

http://www.atpturbo.com/Mercha...e=BCS

Theoretically, you would be stepping up in A/R so initial spoolup would suffer.

In reality, you will recover some if not most of that spoolup due to the engine being 2.4L and you'll have a nice turbine entry into the T3 flange.

In terms of power, you will make a whole lot more due to reduced back pressure.

[sunnys14]

I'm running a 4" intake pipe about 15" long so I was just kind of nervous and thought my turbo had seized or something.

Going with a T3 turbine, what manifold are you going to run?

[scheffler]

Hey that is a real neat turbo you got there.

But I/ KA-t want some numbers

But hey nice turbo good upgrade

[eazye2000]

But I/ KA-t want some numbers

Yeah, about that.... Sorry.. lol I can afford a 1200 dollar turbo, but can't get a dyno run.

Trying to get in on a local dyno rental. We'll see how it goes. But I wont be running this turbo I'm afraid. I wanna go T3 because it's killing my gaskets and efficiency of the turbo.

[sunnys14]

What manifold are you going to run if u go T3?

[eazye2000]

What manifold are you going to run if u go T3?

Pfffft.... T3 eBay all the way baby !!!!

I would have went with the Neukin manifold like they promised, but I haven't heard much from them in a while. Check the thread that's up about them..

I'm sure I can modify the eBay mani.. Not a problem at all. I modified my T2 mani from eBay with no ill effects. Running 25+psi with no problems as of right now with the T2 right now.

We'll see how it goes. I gotta double check on the exhaust turbine stuff, but I'll update ASAP.

[eazye2000]

So I spoke with one of my OG Gansta' buddy mods, and he says to put a 60mm wastegate on the manifold its self. Anyone have any thoughts they would like to put into this? I'm going to be shopping around for wastegates in the meantime to try and score a deal on one.But it makes sense to me. Just a little more work, and I'd like to change a few things while everything is out this time. We'll see how it goes.

But yes, input, please.

[WDRacing]

Increasing exhasut flow and reducing backpressure is the same whether done with a bigger turbine setion or a big eternal wg. Especially if you design the wg exhaust path well.

DO IT!!!!!!!!!!!!!!!

[spooled240]

Real turbo's don't spool at 2000 brah...lol. Keep the one you have and up the boost...you'll be happy.

Sigs now only apear once per thread. Saves on space and load times

my turbo get's 1-2 psi at 2000 rpm's and I have a t3/t4

If I'm correct, the turbine itself creates all the backpressure you will need so a large diameter downpipe/exhaust system would be nothing but a plus.

[nissanfanatic]

Work is accomplished across a pressure differential, in any system. You cannot use electricity unless there is a difference in potential across the load that is supposed to do work. You cannot cause a turbine to spin unless there is a difference in pressure across the inlet and outlet. The amount of work that is accomplished can be described in energy in vs energy out. In the case of a turbocharger, turbine efficiency, pressure at inlet vs pressure at outlet, and exhaust flow.

In any system, you can use the tri-fecta of energy. Pressure, flow, and resistance. Electricity is current, voltage, and resistance. Current is relative to flow, and pressure is relative to voltage.

Work cannot be accomplished without a difference in pressure/potential, and cannot be accomplished without energy input in the form of flow, heat, whatever.

[eazye2000]

Ok, can someone put what he said into something we can understand?

What I'm thinking, is that is I only use the inlet of the turbo, for spooling gasses, instead of trying to use it as the one and only outlet of gasses from the engine, I should be ok.Because right now, all the exhaust has to go through the T2 flange, regardless if it's going to spool the turbine, or go out the wastegate.If I throw on an external gate on the manifold, I will be able to utilize the T2 flange to only spool the turbo. Basically just blocking off the internal wastegate. Then let the external gate do it's job at releasing the pressure from the manifold..Yes, no? Can people understand that a little better?

Any and all input is appreciated, as long as I can understand it..

[480sx]

So your problem is you keep blowing turbo gaskets right? If this is the case, i think i told you before to check your drive pressure(aka 'turbo backpressure'). You want to be as close to 1:1 boost:drive pressure as possible. However you can go up to 1:1.5 without much stress on the turbo itself. Anything past that and your turbine is trying to 'fly' out of the housing. Destroys a turbo, blows gaskets, ect ect.

I would go with the easy route first, externally gate that thing. 44mm if you can manage it. Thats almost surely going to fix your problem.

[WDRacing]

With a T2 flange you're going to want atleast a 60mm to make the hassle of welding the flange etc onto the mani.

Eric, you've got the theory down man. Block the internal gate off, simply disconnect the actuator from the vacuum should do. Then weld on the flange and appropriate piping to locate the WG at least in the general direction of the exhaust flow. You don't want any rough transitions. The extra flow of the 60mm wg will make up for the lack there of with the T2 flange. It's simple exhaust gas scavenging...no need to get all mathmatical at all. You need to get rid of more exhaust gas because the T2 is restricting flow right? So the turbo spools up fairly quickly because of the tiny T2 housing...but once the motor reaches say 3k rpm it's starting to suffer from back pressure. So what do you do...? How about vent off more exhaust gas? Throw an additional 60mm of exhaust flow and you increase your total ability to move spent gases.



Go Now!!!!!!!!!!!!

[eazye2000]

WDRacing

Love you man.... Love you long time...

When I get back up to Bean town, I'll look into getting a wastegate. I'll let you guys know how it turns out.

and for quick reference, what filler rod can/do i use to weld stainless to mild? Is it 309L ? I don't remember...

[neverlift]

flux

it can do anything ask my o2 housing(cast cut and flipped, welded with flux) and yes I stress tested it with my hammer

[GTR PrYdE]

The only problem with that is that a Tial 60mm costs $530.

But if it's worth it to you... awesome!

[WDRacing]

The only problem with that is that a Tial 60mm costs $530.

But if it's worth it to you... awesome!

EBay 60MM FTW

Use a boost cut limiter for safety and roll on 2...

[GTR PrYdE]

Holy crap that's cheap! Yeah I guess if you used Cory's boost limiter you'd be set for pretty cheap, nice.

[Dammitboy]

and for quick reference, what filler rod can/do i use to weld stainless to mild? Is it 309L ? I don't remember...

According to Burns Stainless, "Use 309 filler rod to weld 304 to mild steel."

I got a whole list of these if you need more.

[eazye2000]

Sweet. Appreciate the welding info.

Gotta sell a few things, then I can pick up a gate. Using the boost limiter seems like good insurance. I'll update if anything changes.

My S14 project is on hold. I got a bum turbo, and I'm looking for another. so I may as well hit up the S13 and get her back on the road.

[sunnys14]

You run at the track yet?

I ran....

[eazye2000]

Nah, not run at the track yet this year. I took it to the circle track and drifted the crap out of her though.

What numbers did you come up with? I'm curious. I bet you had a hell of a last half of the track.

[sunnys14]

I'm not so sure about this setup.

I don't feel the hard boost hit till about 3500+ rpm. Even if I'm building 7psi by 3000rpm, It doesn't feel powerful at all. Maybe my wastegate is opening too early? I am getting a HKS adjustable to see if this is the problem. In 5th gear on the freeway, I can build 12psi at 3500rpm. Thats about 500 rpm more than what yours.

Top end feels great but my fastest time was only 13.3 @ 111. Outside temps that day was about 104 degrees.