Hey guys well I wanted to know what you guys would suggest for the turbo. I am looking at the Gt 3076r with b housing. However I am not sure on the a/r. Inline recommended .48 for my use. Will that be good or should I go with a .82. My goals for the car is a dead reliable daily driver. I would like maybe 380+ hp eventually. My main concern is that i like the nice down low with quick spool but don't really want the tq to taper off at the top. Would like the feel of the stock s2000s linear build in power and tq as much as possible.

 

You can't have it both ways. The smaller turbine will allow a quick spool, but eventually choke flow at high rpm. A larger turbine will take longer to spool but won't choke flow at high rpm. It's all in where you want to compromise.

Your low 380 HP goal meshes better with the 30 series. Most guys with 35 series turbos are searching for 500 hp. I would say a 3076 or 3082 would be in your future.

I would stick with a .6 or .8 AR ratio - middle ground. The extremes ie .48 and 1.06 AR ratios are not seen as frequently. Seems like they would only be useful as a bandaid to compensate for grossly mismatched turbine sizing to a given application.

Talk to a reputable shop like Inline Pro or Full Race and be very specific (and very honest) about your intended use. Then ask for references from a couple of their customers with setups similar to the one(s) they recommend to you. Odds are that those cutomers are on this board, easily contacted, and willing to share their experiences with you.

Peak HP numbers are for dyno bragging rights. You only spend a fraction of your time on the street at full load.

 

ya i talked to inline and they recommended for my use the 3076r with .48 a/r would be best. They said that for my power goals it shouldn't run out of steam up top. I think slimjim used this same setup and had good success with it. I want the car feel more like a stock s2000 where it builds power to redline and feels like it.

 

If you are looking for stock like engine response, it's not going to happen with a big turbocharger. You'd need to run low boost on a smaller turbo to mimic the stock torque curve. High boost on a small turbo will result in a torque curve even more extreme than mine in the mid-range.

My old etup: InlinePRO kit with GT3076b. 400+ rwhp. 290+ rwtq. 0.48 A/R turbine housing for an absolutely stupid mid-range punch. This turbo with a tubular manifold and a free flowing exhaust would be SICK. (I used a VERY restrictive exhaust to keep sound down).

I would not shy away from the 0.48 A/R housing. Just make sure it's what you want...

 

There will be NOTHING stock about this feeling...

From 4500 to 8500, my setup made more than 2x more torque than stock. Peak torque was ~2.3x.

Throw in a 3" single exhaust and the setup would have spooled about 500 RPM sooner, and reached closer to 430+ rwhp at my boost level (18-19 psi). Who knows what the torque peak would have been...

 

If you want torque to hold to redline but are only looking for 380who or so just use the .63 housing out back. It will keep torque flat at lower boost levels and spool very quick ( 4000 rpm full boost ) and after it spools it will be linear.

 

thanks guys for your help unforunatly i have no idea what i want lol, i have never ridden in a gt3076 car so i am not sure how it will feel. I guess what I am looking for is something that has a linear tq band so it doesn't feel like the car is loosing power up top yet has a good midrange power. Also I don;t want to deal with too aggressive of a tuning either to make power i like it to be on the conservative side to be reliable.

 

I did already buy the .48 housing gt3076r from ILP. Havent got my stuff yet tho. I talked to an experienced tuner here in Sweden and he was abit afraid about knocking (early fuel detonation) when I talked about the .48 housing.
Still Chris at ILP is recommending that one and

 

S2kswe, Not sure what your tuner meant by difficult to tune. I don't see any reasons why the tuning should be any different than with any other turbo selection. The 0.48 A/R turbo will result in a midrange that is just ridiculous. It WILL sacrifice power way up top, it's the nature of the pairing. But I achieved 400 rwhp with mine which is approximately 350 more than you need to get into trouble with the police.

The big thing is that this turbo selection is a daily driver turbo. Caught in the wrong gear? Who cares? You don't have to rev the living daylights out of the engine to get near maximum performance like with the stock engine. In that respect, adding this turbo will result in a completely different dynamic behind the wheel compared to the "must rev to 9K to beat that minivan" stock feeling.

My setup was the exact opposite of a dyno queen.

 

He is talking about restrictive turbine housing and high stock compression means higher risk for knocking. I do value a powerband that gives the best overall performance.
And since this combo also means more torque, thats also increasing the risk for knocking. Power down low = Torque, since hp=torque x rpms. (Just example of the reality not exact formula)