Garrett Medium Frame Gtx Turbos

[Randon_I_Am]

http://cgi.ebay.com/ebaymotors/Garrett-GTX3071R-Turbo-T3-GT-internal-WG-Swingvalve-HSG-_W0QQcmdZViewItemQQhashZitem5880ad175bQQitemZ380115949403QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

So what would you turbo guru's predict this to max out at and how lazy would it be with a .82 rear?

looking at the compressor maps (which i still don't quite understand) would this made 300rwkw?

[discopotato03]

Well if the map is correct you can assume the compressor side of the TURBO should be good for ~ 540-550 Hp's worth of airflow at three bar absolute / 29.4 pounds psi gauge pressure .

This is not to say a Neo RB25 can do this because the map is only trying to show compressor end performance .

Since the flow ratings are getting towards GT3076R levels it's probably reasonable to expect it to respond like one - possibly a tad earlier but I'm only guessing .

You should probably compare that compressor map with the one of the real GT3076R 56T because while its peak efficiencies are very similar I like the 76R map . I did say recently on one of the American boards that Garrett's trend when they make higher flowing compressor wheels is to go up a family size of compressor housing because you get a larger diameter back plate/diffuser section and a larger radius volute passage . From maps I've seen this tends to widen the islands and increase the gap between them . When they are all close together I think its telling you that they are getting rapid changes in thermal efficiency over a short distance on the mass scale which to me indicates its not a wide ranging thing .

Maybe these things need a T04S housing or even one of the slightly smaller ratio GT40 ones , it means more bulk and weight and dunno if Garrett want to go there . If you've got time look at the GT4088R compressor map because they are really nice though more than you're looking for . The significant things are the small wheel trim and the larger GT40 0.72 A/R comp housing and although OT the 78 trim turbine size .

The 0.82 housing , if it really is the Garrett GT30 one , should work well but I wouldn't go looking for boost at 2000 revs . I think the go is to improve the engine itself so that it makes a bit better torque off boost and be a bit more seamless to drive .

A .

[JonnoHR31]

the max for internal gate gt30s on standard manifolds seams to be anywhere from 260-310rwkw on normal fuel. it varies a fair bit and theres no garuntee you'll see 300rwkw with that setup. the compressor side is certainly capable at higher boost levels (i suspect you'd need more than 20psi) but the exhaust side starts to get fairly restrictive at 300rwkw, mainly because of the standard manifold.

[wrxkilla]

Ill be doing a direct bolt off/on comparison between the GT35 and GTX35 in the coming months.

Waiting to see a result, as I am getting tempted to ditch the GT35 for the GTX35.

A result would be nice to look at first...

Mick

[sky30]

as above, im very keen to see back to back result in GT35 - GTX35.

Anyone?????

[Randon_I_Am]

So I've been comparing the GTX3071R compressor map with the GT3076R and they are very similar. (to my very, very limited knowledge)

But the GTX3071 wheel is smaller correct? Thus making it easier and quicker to spin up?

http://cgi.ebay.com/...sQ5fAccessories

Turbine Housing- new T3 GTinternal WG with built in swingvalve W/Turbine Housing Clamp and Bolt Kit

The turbine housing certainly looks like the garrett one. Looks like it'll flow very well anyway.

I'm very tempted to get it. Guess someone has to be the guinne pig ay...

[islade]

Hey, guys

Has anywhere in Australia got stock yet? I'm looking for a GTX3071, and prefer supporting australia

Otherwise, is ATP the best bet?

[scotty nm35]

Street to track can get them, and cheap. They quoted $1545 from Garrett Aus. and $1390 from US. Keep in mind that will have no exhaust housing.

[JustinP]

I just ordered a GTX3071R kit from Kudos Motorsports! I should have it in a week or so!!! http://www.skylinesaustralia.com/forums/public/style_emoticons/default/thumbsup.gif

Hey, guys

Has anywhere in Australia got stock yet? I'm looking for a GTX3071, and prefer supporting australia

Otherwise, is ATP the best bet?

[D_Stirls]

http://www.turbo-kits.com

quote me $1429 + postage for a GTX3071R with a 0.78A/R split pulse turbine housing. Send them an email to get a quote.

[Harey]

I just ordered a GTX3071R kit from Kudos Motorsports! I should have it in a week or so!!! http://www.skylinesaustralia.com/forums/public/style_emoticons/default/thumbsup.gif

Congratulations! Let us know how it goes!

[Lithium]

Awesome, very very keen to see how that goes on an RB25 - should be good!

Any details on the engine spec?

[snozzle]

ill have some results up for a gtx3076r fitted to a friends sr20det which used to be running a gt3082r (409hp 21psi) on wednesday night

hopefully it makes the same amount power at 19psi and comes on abit earlier - ill ask the tuner to put both turbos on the same graph if anyone wants?

[GTRPowa]

ill ask the tuner to put both turbos on the same graph if anyone wants?

Definitely. I'd be inclined to ask them to keep everything set as it was, but only tune the extra bit needed for the turbo at the same amount of pressure and get comparative readings. But that's me.

[JustinP]

Engine spec as follows:

RB25DET Neo

PFC and PFC boost controller

Full exhaust

ARC intercooler

040 fuel pump

Z32 AFM

Cooling-Pro triple core alloy radiator

I still need to buy injectors. I'm unsure whether I will get the Deatchworks or the Bosch EV14 ones.

Head will be cleaned up and checked. Unsure if I will rebuild the rest of the motor at this point, not sure if it needs it (head is already off so difficult to test, but it looks OK).

I will be replacing the water pump while its out - toying with the idea of trying an electric setup. Would also put an oil cooler in if I try that.

Awesome, very very keen to see how that goes on an RB25 - should be good!

Any details on the engine spec?

[Lithium]

Bugger... won't necessarily show the real comparison

[snozzle]

[l0WRB]

front wheel looks sexy haha

[snozzle]

Results:

SR20DET fitted with a GTX3076 .82 tuned with BP98 Fuel - 408hp @ 1.5bar

Well the GTX3076r looks to be identical to the GT3082r ! (both turbos were using the same rear housing)

Below is the Power and torque readings @ 1.5bar

The boost actually starts off at 1.4bar and creeps to 1.5bar toward redline

Thick line is Hi boost setting, Thin line Lo boost setting

It had almost the exact same power delivery

Below is a graph of both turbos

Thick line is the GT3082r which made 409hp at the same boost and 445nm of torque - Thin line is the GTX3076r - 408hp and 437nm of torque

Interesting..

Edited February 2, 2011 by snozzle

[bradsm87]

Results:

SR20DET fitted with a GTX3076 .82 tuned with BP98 Fuel - 408hp @ 1.5bar

Well the GTX3076r looks to be identical to the GT3082r ! (both turbos were using the same rear housing)

Below is the Power and torque readings @ 1.5bar

The boost actually starts off at 1.4bar and creeps to 1.5bar toward redline

Thick line is Hi boost setting, Thin line Lo boost setting

It had almost the exact same power delivery

Below is a graph of both turbos

Thick line is the GT3082r which made 409hp at the same boost and 445nm of torque - Thin line is the GTX3076r - 408hp and 437nm of torque

Interesting..

Has that been separately tuned to the same knock threshold and AFR with both turbos or just the new turbo bolted on and dynoed?