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Garrett Medium Frame Gtx Turbos

SimonR32

By SimonR32,
in Engines & Forced Induction

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Lithium Grand Master

Lithium

Posted
Posted

So you have you driven a car with a GTX3071 and Tial 1.06? :)

GT35's aren't my favourite turbo, I have heard of too many failing, even at low (less than 20psi) boost, perhaps because they are so common?

The Tials don't perform really any different to the normal housings, they are just easier to work with, lighter and prettier so the results specifically for a Tial housing turbo aren't too relevant. A good friend of mine upgraded from a 1.06 GT3082R to a .82a/r GT3582R after feeling the lag didn't justify the end result and ended up with the same or better power EVERYWHERE, which to me indicates going to 1.06 on a GT30 is a waste of time if a GT35 can spool comparably and seems to in effect allow more efficient pumping overall.

Obviously not perfectly relating to a GTX3071R, but I at least feel that if you need more than a .82a/r GT30 turbine flow then you're really stretching it with a GT30 to the point its really the wrong size for you and its eventually going to wear out its welcome.

If I were running a 3.5litre V6 there is no doubt I'd be looking at a twin scroll T4 based GT35 (or equivalent) based turbo. I don't know what the people you are talking about are doing to their GT3582Rs, the only guy I know who has broken one (incidentally the same dude who upgraded from the GT3082R) did so after running ~28psi at track days over an extended period of time.... and it damaged itself after trying to maintain that boost level with what he later discovered to be a split plenum.

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whatsisname
whatsisname

Polished up pretty good if I do say so myself [emoji4]

FineLine
FineLine

Who gives a toss how it looks if it meets the performace criteria. I hope they wax garretts arse to the point where garrett actually starts doing some real r&d and giving customers something bette

whatsisname
whatsisname

The GTX3584RS will support roughly 850-880HP on a 3.0L (maximum rpm of ~7500-8000) at a PR of about 3.1-3.3 No chance of getting 1000HP out of it, not unless it can be done at a PR of 2.75 and even th

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scotty nm35 Grand Master

scotty nm35

Posted
Posted

You might want to check out the XR6 failure rates. They are not a great turbo imo especially with the .5 comp cover which is the only one I could fit in the space I have. There is no way I can fit a twin scroll flange let alone the twin gates no matter how small I made them.

The 3082 isnt great either from the research I have done.

I would have thought the .82 GT35 rear housing would be comparable to the 1.06 GT30 in flow but its a moot point as that is the housing I have already and I literally cant buy the .82. When its back in stock I will get one sent out, hopefully they are a direct swap.

Lithium Grand Master

Lithium

Posted
Posted

I know about the XR6 failure rates, and god knows what the reason for that is - I had the idea it only started happening after some change for the BF series?

Fact of the matter is GT3582Rs have been around for a decade now, been used extensively all over the world under intense conditions and proved themselves to the point of being more or less the definitive gatekeeper of sanity for modified turbocharged cars... you know what you're going to get and you know its going to work.

OK, it can't fit so fair enough but bagging one of the most proven turbos out there realistically folly. Why can't it fit, are you stock mounting it?

You are right about the GT3082R though, not great - which is why I'm a little bewildered at Garrett virtually recreating an expensive equivalent of the concept with the GTX3076R.

scotty nm35 Grand Master

scotty nm35

Posted
Posted

I know about the XR6 failure rates, and god knows what the reason for that is - I had the idea it only started happening after some change for the BF series?

Fact of the matter is GT3582Rs have been around for a decade now, been used extensively all over the world under intense conditions and proved themselves to the point of being more or less the definitive gatekeeper of sanity for modified turbocharged cars... you know what you're going to get and you know its going to work.

OK, it can't fit so fair enough but bagging one of the most proven turbos out there realistically folly. Why can't it fit, are you stock mounting it?

You are right about the GT3082R though, not great - which is why I'm a little bewildered at Garrett virtually recreating an expensive equivalent of the concept with the GTX3076R.

I certainly wasn't bagging them out, it just doesn't seem to flow too well with the .5 front. Hopefully the Garrett engineers have sorted some of the current issues with the new range. I agree that checking the filter is an often overlooked maintenance task but it would be a lot easier to block the 1mm restrictor without it.

Here is the space constraint I am dealing with.

post-63525-0-28457200-1305697693_thumb.jpg

scotty nm35 Grand Master

scotty nm35

Posted
Posted

And put it where? Im not ditching the airbox just yet, most of the US single turbo gear has very poor manifold design unfortunately and I cant run twins due to the front shaft and steering.

The manifolds should flow well enough as HKS managed to steal them for their kit, I guess I will see soon.

-_-StRyDeR-_- Experienced

-_-StRyDeR-_-

Posted
Posted

using the new GTX turbo (3582 equivilant, .86rear) my car just pushed out 630rwhp on e85, 27psi. will post a dyno sheet today. all my mod's are in my build thread...

extreamly happy!! maxed out the baby turbo though, specially the .86 rear. however i have a huge playing field with boost since it still comes on VERY early.

as i said...will post up the dyno sheet ASAP

CJ

ShiftyTys Rising Star

ShiftyTys

Posted
Posted

Anyone ever had there back 3 cylinders turning off for a coupl mins then fixing itself. Every 45 or so mins on idle? Or after a few "blips of the throttlle"

They feel they have tried everything n that's why I am unable to comment on the gtx3076 :( it's not back yet.

They are still trying to nut it out.

Lithium Grand Master

Lithium

Posted
Posted

Sounds like a wiring issue... should start a new thread for it as there could be much discussion for that.

Nice result on the GTX3582R (??) Stryder - look forward to seeing the sheet :) Whats the spool like?

ShiftyTys Rising Star

ShiftyTys

Posted
Posted

Sounds like a wiring issue... should start a new thread for it as there could be much discussion for that.

Nice result on the GTX3582R (??) Stryder - look forward to seeing the sheet :) Whats the spool like?

Nah. All wiring completely replaced. Injectors are all getting injector pulse. Ignition is fine etc etc. It's been there over a fortnight longer than it was due. They are now trying more random and random things. Just in the hopes. They will find it. Just trying to research on my end.

;)

SAU search time :)

kristafa Proficient

kristafa

Posted
Posted

Anyone ever had there back 3 cylinders turning off for a coupl mins then fixing itself. Every 45 or so mins on idle? Or after a few "blips of the throttlle"

They feel they have tried everything n that's why I am unable to comment on the gtx3076 :( it's not back yet.

They are still trying to nut it out.

I've witnessed this happening, tucked the powerfc back into the footwell after a tune and it started happening, after a while of checking a few things it turned out re-seating the connector to the powerfc sorted it out.. it was like revving it shook the connector and made it work for a while then it worked loose again.. worth a try considering its free!

Rolls Grand Master

Rolls

Posted
Posted

Anyone ever had there back 3 cylinders turning off for a coupl mins then fixing itself. Every 45 or so mins on idle? Or after a few "blips of the throttlle"

They feel they have tried everything n that's why I am unable to comment on the gtx3076 :( it's not back yet.

They are still trying to nut it out.

A loose ECU connector will do that, I put an alarm system in mine and it kept dropping to 4-5 cylinders, undid and screwed the ECU connector back in and it came good (had to remove it for the alarm)

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