Garrett turbos

[A80Avant]

would you rate the GTX3076 0.82AR like a 600Hp turbo boosting 2Bar in it best efficiency?

got a normal 3076 with 0,82AR doing 2.2Bar at 4200rpm in third gear ....that means a GTX3582 0.82AR will do 2.2Bar at for example 4700rpm then?

thanks for the explanation

Vas,with a 3076 0.82 just reduce a gear and get full boost in any moment

I don't like to reduce gear or go above 6500rpm. That's my driving style. But I like to have the best of both worlds. With head porting, small hotsides and perhaps a tubular manifold in the future I could have a bit of everything!

sent with Nokia 5110

[Rocco]

I don't like to reduce gear or go above 6500rpm. That's my driving style. But I like to have the best of both worlds. With head porting, small hotsides and perhaps a tubular manifold in the future I could have a bit of everything!

sent with Nokia 5110

yeah,got the same,just reducing one gear i have not lag and it pulls hard till 7500Rpm / 1.8Bar

you are too lazy,you need a automatic GB

[URQguy]

We had a 2.2L make 415whp at 22psi on a Mustang dyno, but that was with a header and stock intake manifold. I want to say it was at 22psi by 3800. Mustangs are an honest 20% drivetrain, putting it at 510hp crank. That isn't quite 2 bar, but close. I bet the extra few psi would have made it a 450whp/565 crank hp turbo pretty easily. Any more then that, you start to beat up against the limits of a 30r hotside. Only way to see a true 64lb/min the gtx is capable of is going to a 1.03 hotside. That is more lag though, and most people just move up to the 35r frame turbo.

As for the stock cams, I would find some 7a cams, as they don't give much more lag. The top end is much better with them, especially with larger turbos. There isn't enough duration or lift on the turbo cams. I think people confuse the turbo choking out with the cams choking out. 7a cams have shown to make as much as 700whp, but it better happen before 6500, because the party is over after that.

[URQguy]

Yeah, and that is a good point. It is hard to quantify "spool" for every engine configuration. I get spoiled in my shop because most cars I tune are on tube headers, custom intake manifolds, 3" exhausts with no cats, e85, stock or higher compression, ect. Yes, they are 2.2L still, but VE has gone up tremendously.

[Rocco]

We had a 2.2L make 415whp at 22psi on a Mustang dyno, but that was with a header and stock intake manifold. I want to say it was at 22psi by 3800. Mustangs are an honest 20% drivetrain, putting it at 510hp crank. That isn't quite 2 bar, but close. I bet the extra few psi would have made it a 450whp/565 crank hp turbo pretty easily. Any more then that, you start to beat up against the limits of a 30r hotside. Only way to see a true 64lb/min the gtx is capable of is going to a 1.03 hotside. That is more lag though, and most people just move up to the 35r frame turbo.

As for the stock cams, I would find some 7a cams, as they don't give much more lag. The top end is much better with them, especially with larger turbos. There isn't enough duration or lift on the turbo cams. I think people confuse the turbo choking out with the cams choking out. 7a cams have shown to make as much as 700whp, but it better happen before 6500, because the party is over after that.

are you talking about GTX or GT ?
if i had known that you have a shop in Las Vegas i would have loved to visit you there the last month of July... i was in Vegas for 5 long days

[URQguy]

GTX in most reference

Yeah, I should be more involved in this forum, but it is hard to keep up with all of the forums. If anybody is in Vegas, feel free to stop by! We always have something interesting going on in here!!! Shipping is free too!!

[targus]

Yeah, and that is a good point. It is hard to quantify "spool" for every engine configuration. I get spoiled in my shop because most cars I tune are on tube headers, custom intake manifolds, 3" exhausts with no cats, e85, stock or higher compression, ect. Yes, they are 2.2L still, but VE has gone up tremendously.

How do these engines handle higher compression? (and are they audi il5 20vt)

[A80Avant]

pretty well.
mine is around 9:1 but with a modified combustion chamber and i can run very good timing without knock. High compression is good for the car to be agile and snappy when off boost as well as faster spool, but the negative is that it becomes knock prone.

[URQguy]

Pretty much. Stock compression for anything running pump, 10.5:1 for anything running e85 with the occasional pump, 11.75:1 on anything dedicated e85. 11.75:1 2.6L Talldeck engines are REALLY fun.

[afterburner]

What about compression when running only on LPG + Water/Meth injection and around 1 bar of boost?

[URQguy]

Liquid Propane Gas?

[afterburner]

Liquefied petroleum gas, but yeah, a mix of propane and butane. I'm doing a conversion from a N/A engine and wondering what compression ratio to have.

[URQguy]

Never played with LPG, but I hear it has awesome octane rating and even better when you take into account the cooling effect. I'll look into it!

[afterburner]

The cooling effect is if you use inject it in liquid form. I'm plan to inject it in vaporised form, that's why I want to use water injection.

[Ruffiano]

1 3071R sold and shipped
1 3582GTXR pending sale
1 3076r with KKK pending as well.