Staffi

iTrader: (1)

Does/is anyone off here running one on there cossie?? always seems to be the 3076, was just wondering what kind of power these make and how responsive etc, i guess they make around 470-480 ish but with less lag than the 3076??

Any advice welcome.........

pa_sjo

Purely looking at the compressor maps, the 71 seems much more likely to suffer surge problems than the 76, which is probably why the latter is chosen.

NEEDFORSPEED

i have a brand new 3076 for sale if your after 1!

sbd16v

i have a 3071 on my astra if that helps

RWD_cossie_wil

iTrader: (9)

Is that the internally gated one? If so Marco Polo has one on his 3 door, very responsive and pulled very well . On positive boost by 3k easy

Staffi

iTrader: (1)

Wil, internal, or external fella, just gauging info in them tbh mate, sounds good posotive boost @ 3k though..that's what i'm after tbh, not fussed about numbers just a responsive nice turbo..

Fast Guy

All the Gtir boys seem to favour the 3071. (3076 will make more power but boosts at a slightly higher rpm) I'd have thought it'd work as well on a cossie as we're both 2L 16V. 400bhp+ is very easy on these turbos at a little over 1bar. They'll run about 450bhp quite happily.

marco polo

iTrader: (1)

pete

if your after a gt30 that makes positive boost before 3k then the one i have on mine is great

it's hard to explain but if in 1st gear and moving of it will make some kind of positive boost as little as 2k and in every gear after than then the boost is nearly striaght away

it comes in hard @ roughtly 3k then pins you to the seat ..lol..


i dont know what mine is but it's a gt30 with internal waste gate

my engine is also low comp but this turbo make the engine feel high comp

it's hard to explain really you need to be in it to see for yourself

i also have bd15 inlet cam aswell

ill try and sum it up in one go if i can

1 , normal driving it pulls like a t3.48 would do

2, about 3k it then pulls like a t4 would do


this turbo is one of the best turbos i have ever driven , it is defo the most modern turbo that really suits my normal driving around town

and when you want to to be quick the turbo is nearly on song

marco

RWD_cossie_wil

iTrader: (9)

Marco's description is spot on, pulls really well everywhere, as he says it is hard to put into words The car just felt "easy to drive" round town, then goes like a train ...

Red16

Staffi - i know you had en evo with an fpgreen, in the evo world the 3071 is less favourable than the fpgreen, they both make similar power figures but the green tends to be more responsive and make more torque.

and the externally gated 3076 will do up to 550bhp but not be quite as responsive as you've already said.

rapidcossie

dont think the 76 will make as much as 550.

Red16

which is why i said up to, there are loads making close but dont think anyone has made a genuine 550bhp on pump fuel

rapidcossie

think the most Mark Shead as seen is 530 on the dyno so prob make 500 incar in real condtions.

Staffi

iTrader: (1)

Thanks for all your replies folks, really appreciated..

Marco,

That sounds just about perfect mate, the 38 pulls well but it'sjust not a nice turbo imo, i know some will disagree with my view, but it's fooking hard work...

I was spoilt when Karl mapped my 3dr on the T34.48, that was just a hoot to drive and i do miss the response that setup gave, so i may give the 3071 a shot i think..

marco polo

iTrader: (1)

Hi pete

you are like me , no offence i dont give a fiddlers fook about what bhp turbo makes (to an extent) ,

my 3dr is my everyday road car so this turbo is good for i want ,
yes it defo drives like a t3.48 normal driving pulls exactly like that

untill you give it more stick then it kick in properly like a mule

i persoanlly i dont care what power this turbo makes i really dont ,

im over the moon and im glad

it's going to karls shortly for remapping on the 5bar /1000cc/ ect

see what it's like then


trust me pete this is the turbo you will love, it kicks harder than a t38 once it's on full boost

it is most defo the best of both worlds

thats my honest opinion

marco

Red16

Plenty of stroked Evo's on the MLR would disagree with you there

Staffi

iTrader: (1)

Marco,

I'll have to pop over for a blast mate..

I'm really swaying towards this turbo for sure mate..

Thanks for your honesty pal........

rapidcossie

We are talking about a 2litre YB are we not?

maybe Im getting confused

Staffi....do you have a 2.2 46G3 in the saf?

Red16

but why would that alter the bhp that a turbo is capable of?

if you take a t34 off a cossie and bolt it onto a skyline engine... its still a 400bhp turbo is it not?

rapidcossie

the extra power comes from the increase in capacity.

pa_sjo

Actually you may choke the engine if you put a turbo on that cant flow the air. You dont get more power because the engine has more displacement!

rapidcossie

you dont?

marco polo

iTrader: (1)

hi pete

yes mate no probs, it's not as if your miles away is it .........lol...see it first hand never mind the waffle mate about how much bhp this and that makes

it has to be live mapped but i can still give it a bit of stick as it's not quite out the fuel/air map

if it's driverbility your after then this is the baby , if your after 520+ then then go external but that will be defo lagger than the internal

all poeple thin is bhp bhp bhp they dont think about how it's going to drive on the road normal driving

people say to me what it's like off boost , i turn around and say "what off boost "it makes boost nearly striaght away

i have nothing to lie about it ,if it was shite i would tell you to stay away

marco

pa_sjo

No.. its about airflow, not displacement.. all a larger engine means is at a given manifold pressure, it flows as much as the smaller engine at less rpm. The turbo itself is still only capable of flowing a certain amount of air, a larger engine just means you get to that choke point earlier!

sbd16v

not if you put a restriction in the inlet IE: a turbo that is to small

a turbo can only supply a certain amount of air it does not matter what capacity engine you bolt it to if it can only supply air for 400bhp thats all your going to get

Jay,

iTrader: (4)

staffie told you ages ago on that t38 thread to go gt3071 wtf people buy t38s when the gt30 is that good is beyond me

Red16

Plenty of comparisons of 2lt forged and 2.3 ltr forged engines running the same turbo on the MLR, they tend to make the same bhp but at different rev's, the big difference is the torque figure... the 2.3 makes more than the 2.0 and makes it at lower rpm.

i understand this is the case in n/a tuning but i always believed the same as pa_sjo

agree'd

Staffi

iTrader: (1)

Jay,

T38 was on the car when i bought it fella, WOULDN'T of been my choice but obviously Jim liked this setup..

Staffi

iTrader: (1)

So bottom line is, the 3071 spools up like a T34 and makes holds the power better and makes a nice drivable road/track setup yes??

Quite suprised more people don't go down this route then tbh, unless i'm missing somethong, or it's just BHP numbers alot of folks are after.

I've been in an Evo with a 3076.82 on and must admit that it felt superb though tbh, again different setup etc but felt very strong and didn't notice alot of lag to be fair..unless that's cus i was shitting myself..

Any tuners have any views on the turbos mentioned??

Jay,

iTrader: (4)

get that fat wallet out staff and get it remapped you wil not be dissapointed , could even stop u selling the poor old girl to buy a evo next month oh and we get to see more pics

Staffi

iTrader: (1)

i have been quiet with the pics tbh..

Jay,

iTrader: (4)

victor meldrew voice" i dont believe it that staffi has stopped whoreing his cossie about the internet "

dont know how true it is but ive heard you can machine a .63 out and use that on a gt30 and it gets more responsive but iwonder if itll surge on big boost

Staffi

iTrader: (1)

Anymore people using, have used this turbo?? like to hear your views..

rapidcossie

Staffi IMO the reason more folk dont go for the smaller turbos are cos they will not make the head line figures.

sbd16v

i agree i haqve near on the same engine build as all the vauxhall boys going for over 500 at the moment, but ive gone for a smaller turbo so it is more drivable

rsnissan

iTrader: (9)

not used one but thats deffo my next step..............I agree about the T38 as well.

Set of blacks, a GT30 and its off to Stus

my only hold up is not having ALS for the maccy D's carpark

edited to add i will probably go for the smaller version as well. I LOVED my .48 stage 3 conversion for general hoon-ability

and miss that ALOT now i have to absolutely positively be gunning the T38 go get my grin factor back...........dont get me wrong once on boost it IS great but there is just something I cant explain for the rest of the powerband and its not that its slow as looking at the speedo does remind you you're going some!!

I guess you would only know if you had the T38 lol

Staffi

iTrader: (1)

Yeah i guess Euan, as said though for my needs, i'd rather have a nice drivable car tbh and the 38 isn't the best i've had..

I fuly appreciate folks going for bigger turbos if they're tracking/top speed running etc, but mines just a road car tbh and if i could get around 460 odd with nice early boost and good pull i'd be over the moon.. plus being on the 205 block still i might get away with it, kiss of death..

pete mcrash

iTrader: (1)

whats the spec for a cossie...............3071....3071r...3071rs......w hat size comp wheel and housing are the best to go for.......more info thanks....

CossieRich

iTrader: (1)

now my t34 has blown, i will be getting a 3071 with .82 exhaust housing. Lets see what it will do on a standard head with bd14 inlet

R5FORD

iTrader: (1)

why not go roller bearing t38? thats what im going for