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GT30 turbo power

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Old 10-10-2007, 08:49 PM
  #81  
marco polo
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Originally Posted by PROMETHEUS
what management are you all using???
L8 with pectel
Old 10-10-2007, 08:51 PM
  #82  
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Originally Posted by radiant red
martin-reyland


Can you supply internal waste gate set up GT30's? as i have had a price a couple of months back.

Spoke to AET recently about it, they seem to think they make 500+ on the correctly specced cosworth engine according to there dyno....

they will just about , the external will make alot more no problem
Old 10-10-2007, 08:58 PM
  #83  
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Originally Posted by Dunccoss
looking at going down this road aswell, what sort off boost do you run and when do you get it come in please, as i would like to have good boost at 3 to 3500 rpm so i get a good hard pull like a t 34 /63 gives at 3500 rpm / 33 psi or would it be better than that

Hi Dunc


my gt30 is pulling hard at 3500 rpm i dont run much boost untill its live maped

ill give you the full S.P once karl ahs mapped it


for every chaseing big bhp on a GT 30 go for external version ,if not go for the internal


simple as robo chef
Old 10-10-2007, 09:04 PM
  #84  
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Do external make more torque/better spool up aswell as more power?

What controls the external wastegates? air injectors?
Old 10-10-2007, 09:08 PM
  #85  
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[quote="Paul Ripley"]Do external make more torque/better spool up aswell as more power?

What controls the external wastegates? air injectors?[/quote]

Or a boost controller
Old 10-10-2007, 09:23 PM
  #86  
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you can actually use a simple bleed valve to control them if you want to!
Old 10-10-2007, 09:26 PM
  #87  
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although air injectors or boost controller or ecu controlled solonoid much better obviously!
Old 10-10-2007, 09:42 PM
  #88  
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I have Airs so you use them
Old 10-10-2007, 09:47 PM
  #89  
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youve got the bug now then paul! bet you order manifold wastegate and turbo tomo!lol if anyones interested i got my 44mm tial wastegate and tial bov from speed clinic in america wait for it 250 for the pair delivered in whatever colour. cheap as chips and genuine. getting my motec from them too very good quick service too
Old 10-10-2007, 10:23 PM
  #90  
marco polo
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Originally Posted by Paul Ripley
Do external make more torque/better spool up aswell as more power?

What controls the external wastegates? air injectors?
Hi paul

not sure on spool up time is quicker or not

my car is going on 1000cc injectors/late escort plelume /air injectors with a 12 postion boost controller /5 bar map sensor

see with myself one of the reasons i never went external wastegate was the screamer pipe that put me off , i do alot of track days and there has been a lot of cars that have been blackd flaged for noise because of the screamer pipe

what people have done to keep the noise down they have put a silencer on it or they have brought it into the exhaust system

some people recon when you bring the screamer into the exhaust system it loses a bit of power

i cant really give a full run down of the Gt30 external because i haven't had one

i went the easyway and i am not chasing big bhp either and the GT30 internal waste gate was the one for me

it is more expensive than the external one aswell

marco
Old 10-10-2007, 10:25 PM
  #91  
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Hi paul


ill bet you will ask a thousand and one questions and still not have one
Old 10-10-2007, 10:32 PM
  #92  
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Marco have you had yours setup and put on a rolling road yet? if so is there anychance of looking at the graph?
Old 10-10-2007, 11:15 PM
  #93  
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Originally Posted by miller3
What cams are people using at the moment i have BD14 in and BD10 ex is this OK ?
Doug, i have no idea of what spec numbers the camshafts Martin has spec'd for my engine but it will be running with solid lifters etc
Old 11-10-2007, 07:25 AM
  #94  
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well this is interesting.i always thought that people steered clear of the gt range due to being fragile ?
i havent got a bloody clue on these,i know what a t3,t34 etc look like but the other week i was looking at a car that had a "gt28" on it,but it looked the same size etc as a gt30 i looked at on a car at nat day.
whats the difference?or is it all internal or is it the rear housing?
Old 11-10-2007, 08:58 AM
  #95  
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Originally Posted by Kelv
Originally Posted by Porkie
I FUCKING LOVE MY GT30 as well
Lee, for any amount of money - would you go back to the GT35?

or do you really rate it that much better now youve changed to the GT30?
I've kept the GT35 and will have it on shelf.... if I decide to go with different engine Internals and new exhaust manifoild to get the engine reving to 9k and bigger CC and with a Dog engagement box then yes would go back...

But on a Syncro 5 speed box on a 2litre YB the GT35 is the WRONG turbo....

Its WANK.

THE END.

(Unless you are a Topspeed only knobjocky of course)

The GT30 is sooooooooooooooooooooooooooooooooooooooooooooooooo oooooooooooooooooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooooooo much better its silly!

Its just a different car. Powerband is immense, third gear is STUPID on track!!! just leave it in that and drive it like a big go kart!

Ask Doug Stirling about his 4th gear trick on the road!
Old 11-10-2007, 09:05 AM
  #96  
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Finally specced mine up this week with the help of some good advice.

Im joining the gt30 crew and cant wait.....
Old 11-10-2007, 04:20 PM
  #97  
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Originally Posted by Paul Ripley
Marco have you had yours setup and put on a rolling road yet? if so is there anychance of looking at the graph?

Hi paul

i will most defo , my car is coming out of the body shop at ford

its then going to karl for live mapping , once it's live mapped i will book a rolling road session at noble and see roughtly what power i have got

karls estimation is pretty good

marco
Old 11-10-2007, 04:31 PM
  #98  
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I think it's quite funny how people think that bolting a turbo on a car will be the miracle cure for a poorly specced engine .

My old T4 engine with a proper spec made 15psi at 3150 rpm and 32psi at 3500 .

It's not JUST the turbo, the whole engine has to be matched TOTALLY.
Old 11-10-2007, 04:37 PM
  #99  
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Originally Posted by MAD matt-sab
thats what cyrils is running now in the esy cos he had after yours and runs 504 bhp and 500 lbs torque if memory serves me right.
all madevelopments and autronic of course !
not sure of exhaust housing size
but i have driven it lots of times and no turbo surge at all BUT loads of go ! its propper mad !
it feels like its trying to lift the car off the road !

go for it id say !
Yes it made 504hp and 494ftlb on a Dyno Dynamics Rolling Road but we all know these under read but does this now mean they over read

Mark
Old 11-10-2007, 04:42 PM
  #100  
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Originally Posted by Mike Rainbird
I think it's quite funny how people think that bolting a turbo on a car will be the miracle cure for a poorly specced engine .

My old T4 engine with a proper spec made 15psi at 3150 rpm and 32psi at 3500 .

It's not JUST the turbo, the whole engine has to be matched TOTALLY.
come on then mike, whats your engine spec sump to rocker cover? no secret squirrel either please
Old 11-10-2007, 04:48 PM
  #101  
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Originally Posted by Mike Rainbird
My old T4 engine with a proper spec made 15psi at 3150 rpm and 32psi at 3500 .

It's not JUST the turbo, the whole engine has to be matched TOTALLY.
Was your old engine not a 2.2 litre? If so you could have used a GT35 for more power and same response or if you had used a GT30 it would have been loads better than the T4. I understand what you are saying about the correct spec all working together but going 2.2 is hardly a cheap option.
Old 11-10-2007, 04:51 PM
  #102  
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so how do you tell the differnce's between the gt28,30,35 andare they all better externally gated?
Old 11-10-2007, 05:07 PM
  #103  
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Originally Posted by Mike Rainbird
I think it's quite funny how people think that bolting a turbo on a car will be the miracle cure for a poorly specced engine .

My old T4 engine with a proper spec made 15psi at 3150 rpm and 32psi at 3500 .

It's not JUST the turbo, the whole engine has to be matched TOTALLY.

Hi Mike

i know what your saying , but what i am saying is bolting on a gt30 with internal wastesgate on my engine is 10 times better than the t34

my engine was supposed to be an exact copy of the harvy 400+bhp engine if it is or not ill will never know untill it striped

the only thing that have changed since fitting on the GT30 is the exhaust cam

it still uses the Bd** inlet
cam shhhhhhhhhh i shouldn't have said anything


marco
Old 11-10-2007, 06:35 PM
  #104  
Dan
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Are one of these necessary then?

http://cgi.ebay.co.uk/2wd-RS-Coswort...QQcmdZViewItem
Old 11-10-2007, 06:40 PM
  #105  
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not sure about one of them Dan,but my T4 on a 2wd manifold just misses my head,infact i had to file down the little lug that the water pipe bolts on to.
Old 11-10-2007, 06:41 PM
  #106  
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Originally Posted by Dan
That item will not work, we tested w/g take offs like that years ago... unlimited boost!
Old 11-10-2007, 08:06 PM
  #107  
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Originally Posted by RWD_cossie_wil
Originally Posted by Mike Rainbird
I think it's quite funny how people think that bolting a turbo on a car will be the miracle cure for a poorly specced engine .

My old T4 engine with a proper spec made 15psi at 3150 rpm and 32psi at 3500 .

It's not JUST the turbo, the whole engine has to be matched TOTALLY.
come on then mike, whats your engine spec sump to rocker cover? no secret squirrel either please
I am always interested in other peoples engines
Old 12-10-2007, 08:55 AM
  #108  
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My old spec was Farndon 82mm crank, standard rods, accralite short compression height 92 mm pistons (2,180cc), 7.54:1 c/r, medium port Nick Waples head, T4 mar-m 247 shafted 57 trim turbo, short duration cams timed in to bring the car on boost as early as possible, which meant that although it made peak power at 7k like a normal T4 engine, it dropped like a stone after that (where normally with long duration cams it would hold on to the power). The capacity would have only made a few hundred rpm difference, the most crucial part of deciding the powerband of a turbo engine is the cam spec / timing.

If you want a FULL detailed spec of my current engine, take a look on page 1 of my resto thread .
Old 12-10-2007, 09:24 AM
  #109  
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Originally Posted by RWD_cossie_wil
come on then mike, whats your engine spec sump to rocker cover? no secret squirrel either please
well if he's converted his engine from overhead camshaft to one that now operates the valves by rockers that need covering, i would be keeping it secret squirrel
Old 12-10-2007, 10:28 AM
  #110  
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Originally Posted by foreigneRS
Originally Posted by RWD_cossie_wil
come on then mike, whats your engine spec sump to rocker cover? no secret squirrel either please
well if he's converted his engine from overhead camshaft to one that now operates the valves by rockers that need covering, i would be keeping it secret squirrel
sarcy fooker - Ok then, camshaft cover
Old 12-10-2007, 10:49 AM
  #111  
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Remember a GT30 is not just reliant on the exhaust housing size. There are a number of different sized GT30 wheels as well. I now have the largest GT30 wheel on a .64 housing for my Cosworth Subaru Engine (turbo supplied by AET). Albeit on a 2.5ltr it acheives 525bhp / 525+lbft torque on straight pump fuel, with peak torque at 1.7bar and peak power at 1.6bar boost. With you Cossie boys..... thats pussy boost!

For a bolt on internally wastegated turbo they certainly seem to deliver.
Old 12-10-2007, 02:38 PM
  #112  
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We run MAN BOOST
Old 12-10-2007, 04:45 PM
  #113  
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Originally Posted by Fagin
Remember a GT30 is not just reliant on the exhaust housing size. There are a number of different sized GT30 wheels as well. I now have the largest GT30 wheel on a .64 housing for my Cosworth Subaru Engine (turbo supplied by AET). Albeit on a 2.5ltr it acheives 525bhp / 525+lbft torque on straight pump fuel, with peak torque at 1.7bar and peak power at 1.6bar boost. With you Cossie boys..... thats pussy boost!

For a bolt on internally wastegated turbo they certainly seem to deliver.
alot of torque!
Old 12-10-2007, 05:55 PM
  #114  
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Originally Posted by martin-reyland
Originally Posted by Dan
That item will not work, we tested w/g take offs like that years ago... unlimited boost!
On a 2wd Manifold would a spacer be needed to fit a GT30 then?
Old 12-10-2007, 06:00 PM
  #115  
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Originally Posted by Dan
Originally Posted by martin-reyland
Originally Posted by Dan
That item will not work, we tested w/g take offs like that years ago... unlimited boost!
On a 2wd Manifold would a spacer be needed to fit a GT30 then?
External wastegate... Yes! I keep these in stock.
Old 12-10-2007, 06:02 PM
  #116  
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Originally Posted by Dan
Originally Posted by martin-reyland
Originally Posted by Dan
That item will not work, we tested w/g take offs like that years ago... unlimited boost!
On a 2wd Manifold would a spacer be needed to fit a GT30 then?
Yes unless you get a PJ motorsport intermediate section

Old 12-10-2007, 06:09 PM
  #117  
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Originally Posted by miller3
Originally Posted by Dan
Originally Posted by martin-reyland
Originally Posted by Dan
That item will not work, we tested w/g take offs like that years ago... unlimited boost!
On a 2wd Manifold would a spacer be needed to fit a GT30 then?
Yes unless you get a PJ motorsport intermediate section


Yes that's true, well worth having if you want to heat up your area around the air filter..
Old 12-10-2007, 06:14 PM
  #118  
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If i were you, i should take Martin's spacer. Nice piece of work, and fits like a glove!!

Without, this is the problem.
The compressor housing hits the 2WD exhaust manifold.




Solution:







Old 12-10-2007, 06:29 PM
  #119  
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Originally Posted by martin-reyland


Yes that's true, well worth having if you want to heat up your area around the air filter..
Air filter isn't going to be near it
Old 12-10-2007, 07:47 PM
  #120  
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That PJ one looks rubbish IMHO, only comes off 1 side of the twin duct, sits at 90 degrees to the airflow, I would be surprised if that could control boost properly..


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