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3076R .63 Vs 3071 .82

Mr. Pav

By Mr. Pav,
in Engines & Forced Induction

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Mr. Pav Enthusiast

Mr. Pav

Posted
Posted

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

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GTScotT Grand Master

GTScotT

Posted
Posted

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.

discopotato03 Grand Master

discopotato03

Posted
Posted

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 .

GTScotT Grand Master

GTScotT

Posted
Posted

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?

wolverine Grand Master

wolverine

Posted
Posted

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.

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