Jump to content
SAU Community

Recommended Posts

hey guys sold my s15 and switched to a 33 pooline for a cheap bitumen sprints car/local drift car. Chasing 270-280 skrillas on 18 or so psi. Rb25 all supporting mods with an unopened engine. I've researched as much as I could but haven't found a good comparison on whether the lag would be less on the .82 71 but achieve the same power. Already have a 44mm t smart gate welded onto stock mani FYI.

Up here in nth qld its hot as shit to and we don't seem to have on par figures with some.of the rest granted. Just seeing what people think. I'm leaning towards the 3076 in .63. Tracks are small so response is needed. Cheers

Link to comment
https://www.sau.com.au/forums/topic/449832-3076r-63-vs-3071-82/
Share on other sites

Get a 71GTX mate, regardless of what housing you run. Near enough GT76 flow, near enough or the same as GT71 spool.

Am running a GTX71 on my SR and cannot fault it. It makes 295wasps on a DD running 98 ron and it is by far the best turbo all round that I have had, period.

My personal recommendation: get a GTX3071R core without housing and a Kando 10cm T3 Vband housing. Kick ass and take names.

I like the idea of Scottys external gates mounted on the turbine housing . IW will work with a 0.82 Garrett housing and either a GT3076R or GTX3071R . People say the GTX3071 is a tad less responsive than a GT3076R and a mid trim 76R should be slightly better responding than the usual larger comp trim version .

Any of these turbos should romp in 270-280 at the bags its just that some will give slightly better transients than others .

Take your pick , cheers A .

I like the idea of Scottys external gates mounted on the turbine housing . IW will work with a 0.82 Garrett housing and either a GT3076R or GTX3071R . People say the GTX3071 is a tad less responsive than a GT3076R and a mid trim 76R should be slightly better responding than the usual larger comp trim version .

Any of these turbos should romp in 270-280 at the bags its just that some will give slightly better transients than others .

Take your pick , cheers A .

Interesting feedback re GTX3071 vs GT3076, who exactly said this?

I believe Mick_O was the fabled GTX response king around these parts, never had I heard anyone say his car was less responsive than an equivalent GT3076....

Furthermore, I can confirm that I've driven a bunch of 3076 powered SRs and none compare to the response I am getting from my GTX3071. None of those 76s were twin scroll but neither is mine. Apples and apples.

First hand experience > folklore, wouldn't you say?

The GTX3071 felt like the open GT3082 for transient response on 98ron IMO (ie bum dyno). The GT3076 felt better everywhere to me but it was TS so this may or may not have a noticeable effect. Mick's GTX was totally awesome on E85 and better than the GT3076 on 98ron.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Oh, also, forgot to add these photos I believe.
    • Thought i'd update on this. I was able to get in contact with Craig Lieberman and later on Darryl Alison (owner of Kaizo Industries). Darryl was able to help me verify that my car was in fact one of theirs and is helping me find more info on mine !
    • There's restrictor pills in the stock boost control hoses. That's how they set the amount that was bled off and hence the "high" boost setting. The usual mod in the day was to remove it and send the "high" boost setting up to about 14 psi.
    • Thanks Duncan, that's the best info I've read. Furthermore after learning about the PCM programming side controlling the factory boost solenoid, the purpose of the solenoid is to "bleed" boost when pin 25 is earthed, thus allowing spring pressure in the wastegate actuator to overcome diaphragm boost pressure, thus closing or reducing the position of the wastegate flap creating more boost as the turbo is able to spin faster. It's pretty cool to see a designated Pill to do exactly this, would have liked to have seen it with a tiny filter over the end for those moments in vacuum.  The constant bleed pill has now been removed completely from the system and solenoid boost control has been restored once again.   Case closed 😂
    • The wideband reading is meaningless if it's not running. Why are you using shitty old sidefeeds on any engine, let alone a Neo? What manifold and fuel rail are you using to achieve that? Beyond that, can't help you with AEM stuff as I've never been their ECU/CAS combo.
×
×
  • Create New...