Rockhound

On my old setup i a had an internally gated GT3076 with antisurge compressor housing.

On my new setup i have an externally gated GT3071 without antisurge.

I have noticed a huge difference in the sound level of the 2 turbos. The old one with antisurge sounded very loud and had a nice raw turbo sound under boost and during spool-up.

My new one you almost cant hear... Is it because of the antisurge housing? Im talking about a huge difference in sound!

Have anyone else noticed this?

CossieRich

iTrader: (1)

This is what mine sounded like on the rollers. Excuse the microphone distortion as we were only using a camera phone. GT3071 internal gate with ported shroud/anti surge housing

http://www.youtube.com/watch?v=XHliyvlhtLE

This is in the car running 390 bhp

http://www.youtube.com/watch?v=vPlna2Cd6lM

JamesH

iTrader: (21)

That sounds awesome Rich

Staffi

iTrader: (1)

Rich,

What bar was that running when it made just 390 mate??

CossieRich

iTrader: (1)

2.5/2.6 but we were restricted with the inlet and more importantly the guy who strapped it on the rollers and did the operating had no clue and was promptly sacked soon after my run!

It still runs 2.5 bar now but makes 480

Staffi

iTrader: (1)

Rich, at that 390bhp was it spooling like a T34 would???

lead_foot

iTrader: (1)

The antisurge compressor housing makes it sound awesome compared to stadnard compressor housing.

CossieRich

iTrader: (1)

Im trying to rack my brains to remember at what revs we had over 2 bar but cant sodding remember. Will have to call slim to see if he can rack his brains.

It is very responsive though for a big turbo

CossieRich

iTrader: (1)

Pete,

Over 2 bar at 4k rpm. Above video on the road is 2.2 bar

Staffi

iTrader: (1)

Yeah i remember Slim telling me it spooled like a T34.63 Rich, that's why i was so impressed for a biggish Turbo, cracking Turbo they are though...

rsmark86

iTrader: (3)

i will get a vid of mine its running gt35 with anti surg with external gate and screamer pipe, and sounds proper rude lol

-beefy-

iTrader: (6)

anyone knwo the preferred size external gate recommended for a gt30 ??


just mines going to be external gate so going to look into one


beef

ST Turbo

I use a 44mm on mine, but 38 is more then adequate...

Rockhound

I use a 44mm tial with v-band. I believe Reyland reccomends this one.

Rockhound

I know this type of housing has a really nice and loud turbosound:



But what about this type:


Anyone?

Joshy

there both ported shrouds?

they work the same way.

fitting a Grp.A. filter would make it sound a bit louder if you dont already have one

JamesH

iTrader: (21)

I'm pretty sure the second one is the one Rich has, mine is that one too. The first type tends to be used on larger turbos (GT35 etc)

CossieRich

iTrader: (1)

Yep. Mine has the holes in it

Rockhound

So does it sounds just as awesome as the other type? My old turbo had the other type, and it was a GT3076 one. It had an extreme turbo sound compared to one without anti surge.

The reason i wanna make sure is because im considering to buy a new housing with antisurge, and only the one with the holes drilled in is available for my current turbo (GT3071)

paddyrs

that sounds good rich

Liams

I've got a vid somewhere with spool up noise from the front of the car with a ported shroud gt30-71... i'l dig it out!

JamesH

iTrader: (21)

Rockhound, the vids posted are on a GT3071 with ported shroud

Rod-Tarry

What a strange reason to choose a Turbo. Dont care if mine sounds like a bucket of spanners being shaken in a bathroom . Aint got time to think let alone listen when its on boost .

ajamesc

Mine has the first type but then my gt30 is quite old now it is very loud as in turbo sound but as said who cares lol as long as it dose its job quiet or loud dont matter!

paddyrs

dose anyone know if them precision turbo's are any good?

v man

get one bought then staffi

and a nice big spec lump to go with it and then go smoke the 4i

BRAMMER

iTrader: (23)

Mine is the same as this the 0.60 housing, not built up yet so have no idea what it's going to sound like

JamesH

iTrader: (21)

Probably pretty awesome I'd imagine

BRAMMER

iTrader: (23)

Hope so James

rsmark86

iTrader: (3)

my turbo has the 70 a/r front on it and its not laggy but with the screamer pipe damn its nosiey.... but i love it