Disappointing RR results.....NOT!!
17 December 2003, 02:35 PM
#121
Former Sponsor
iTrader: (4)
Join Date: Jan 2001
Location: ECU Mapping - www.JollyGreenMonster.co.uk
Posts: 16,548
Likes: 0
Received 2 Likes
on
2 Posts
Harvey,
Looks more like you were deliberately trying to spark it all off again when I do believe you said you prefered it when everyone was quiet?!
I am not trying to start anything by the way, and this is not the place if I was. I am just saying what I see.
Very well done on your 415bhp Alan
JGM
[Edited by Jolly Green Monster - 12/17/2003 4:22:41 PM]
Looks more like you were deliberately trying to spark it all off again when I do believe you said you prefered it when everyone was quiet?!
I am not trying to start anything by the way, and this is not the place if I was. I am just saying what I see.
Very well done on your 415bhp Alan
JGM
[Edited by Jolly Green Monster - 12/17/2003 4:22:41 PM]
17 December 2003, 04:40 PM
#125
Subaru Tuning Specialist
Join Date: Jun 2002
Location: 7.74 @179 mph 1/4 mile - road legal
Posts: 6,654
Likes: 0
Received 1 Like
on
1 Post
Lets all put angry faces on 
.... I mean a power thread wouldn't be a 'real' power thread unless it was corrupted and locked 
[Edited by Andy.F - 12/17/2003 4:42:26 PM]
.... I mean a power thread wouldn't be a 'real' power thread unless it was corrupted and locked [Edited by Andy.F - 12/17/2003 4:42:26 PM]
17 December 2003, 07:26 PM
#128
Scooby Regular
Join Date: Aug 1999
Posts: 1,561
Likes: 0
Received 0 Likes
on
0 Posts
hi alan
the ported shroud will not actually change teh top end at all, as the top end is obviously governed by the flow rate of compressor/engine/cams, etc
what it will allow you to do is pull in the boost earlier and more aggressive with out the surge that we got couple of times. i have got a similar design on my turbo as you know and that is why i can get 2bar boost by 3600-3700k ( 5th gear) and still manange over 500bhp.
sam
the ported shroud will not actually change teh top end at all, as the top end is obviously governed by the flow rate of compressor/engine/cams, etc
what it will allow you to do is pull in the boost earlier and more aggressive with out the surge that we got couple of times. i have got a similar design on my turbo as you know and that is why i can get 2bar boost by 3600-3700k ( 5th gear) and still manange over 500bhp.
sam
17 December 2003, 07:45 PM
#129
Subaru Tuning Specialist
Join Date: Jun 2002
Location: 7.74 @179 mph 1/4 mile - road legal
Posts: 6,654
Likes: 0
Received 1 Like
on
1 Post
Sam
A ported shroud can also increase the maximum flow capacity of a compressor. The secondary feed between vanes effectively increases the compressor inlet area.
Andy
A ported shroud can also increase the maximum flow capacity of a compressor. The secondary feed between vanes effectively increases the compressor inlet area.
Andy
17 December 2003, 07:52 PM
#130
Scooby Regular
Join Date: Aug 1999
Posts: 1,561
Likes: 0
Received 0 Likes
on
0 Posts
are you saying it will increase the a/r ?
i am not sure about this, however it is nothing that i would diss until we actually try it.
the ported shroud as you know is somehting that has been around of years, HKS, garrett etc have been using them for a while now. however, they never really quote any increase in top end power with it.
i have got a ported shroud on mine, and compared to my previous turbo i get no surge at all, i can do 120mph holding part throttle doing a 1bar if i wish to do so.
i am not sure about this, however it is nothing that i would diss until we actually try it.
the ported shroud as you know is somehting that has been around of years, HKS, garrett etc have been using them for a while now. however, they never really quote any increase in top end power with it.
i have got a ported shroud on mine, and compared to my previous turbo i get no surge at all, i can do 120mph holding part throttle doing a 1bar if i wish to do so.
17 December 2003, 07:56 PM
#131
Subaru Tuning Specialist
Join Date: Jun 2002
Location: 7.74 @179 mph 1/4 mile - road legal
Posts: 6,654
Likes: 0
Received 1 Like
on
1 Post
Yes, at high flow it has the effect of increasing a/r ratio but at low flows the air flows the other way (out the ports) which makes the compressor perform as if it has a smaller a/r ratio. ie it can efficiently add more pressure for the same rotational speed.
Andy
Andy
17 December 2003, 10:02 PM
#137
At a pure guess, I would say they welded a 3" tube on the outside of the normal inlet, and slotted the normal inlet in 3 arcs.
At least that's what I might suggest.
Paul
At least that's what I might suggest.
Paul
17 December 2003, 11:30 PM
#139
Scooby Regular
Join Date: Nov 2001
Location: Leeds - It was 562.4bhp@28psi on Optimax, How much closer to 600 with race fuel and a bigger turbo?
Posts: 15,239
Likes: 0
Received 1 Like
on
1 Post
well I know how I did my last hybrid.. (not my own) and that brings full boost (20psi) in at 2200rpm on a 2ltr.
David
David
17 December 2003, 11:35 PM
#140
Scooby Regular
Join Date: May 1999
Location: SSO2003 2nd, SSO2005 1st, SSO2006 2nd, TACC Rd4 5th 4wd: In my car ;-)
Posts: 2,637
Likes: 0
Received 0 Likes
on
0 Posts
Paul,
It's much easier to start with the TD06 75mm inlet cover. Then it just needs machining, no sleeving, or welding.
Mark.
It's much easier to start with the TD06 75mm inlet cover. Then it just needs machining, no sleeving, or welding.
Mark.
17 December 2003, 11:50 PM
#141
Scooby Regular
Join Date: Nov 2001
Location: Leeds - It was 562.4bhp@28psi on Optimax, How much closer to 600 with race fuel and a bigger turbo?
Posts: 15,239
Likes: 0
Received 1 Like
on
1 Post
but mine is a small turbo with nos and one dont give a **** owner..
(see scoobyshootout)
Legacy with oh so many mods now..
ask steve mc. what pistons
(see scoobyshootout)
Legacy with oh so many mods now..
ask steve mc. what pistons
18 December 2003, 12:02 AM
#142
If you have the larger cover to hand then it's machineable I suppose. Thinking about it, the smaller cover doesn't have the blades far enough out to be able to cut in from the outside to create the slots.
They = scottish mafia
Paul
They = scottish mafia
Paul
18 December 2003, 01:03 AM
#143
Scooby Regular
Join Date: Aug 1999
Posts: 1,561
Likes: 0
Received 0 Likes
on
0 Posts
some of you scooby guys really crack me up , most of you just love an excuse to show that you are in the know .
http://www.kansaiss.co.jp/parts/kgm03031.htm
here is what a ported shroud should look like, but they can vary a little bit but you get the idea.
it is not a secret mod as a lot of people may want you to belive
, most of you just love an excuse to show that you are in the know . http://www.kansaiss.co.jp/parts/kgm03031.htm
here is what a ported shroud should look like, but they can vary a little bit but you get the idea.
it is not a secret mod as a lot of people may want you to belive
18 December 2003, 07:38 PM
#145
Scooby Regular
Join Date: Nov 2001
Location: Leeds - It was 562.4bhp@28psi on Optimax, How much closer to 600 with race fuel and a bigger turbo?
Posts: 15,239
Likes: 0
Received 1 Like
on
1 Post
Sam, Your right..
I have one on my turbo, in fact I have since I purchased the turbo way back
If you look at the Garrett GT40 covers (the ones as used by volvo) then you will see that the shroud is actually cast as part of the compressor cover.
David
I have one on my turbo, in fact I have since I purchased the turbo way back
If you look at the Garrett GT40 covers (the ones as used by volvo) then you will see that the shroud is actually cast as part of the compressor cover.
David
18 December 2003, 08:25 PM
#146
Scooby Regular
Join Date: Jul 2002
Location: Under your bonnet
Posts: 9,173
Likes: 0
Received 0 Likes
on
0 Posts
I'm not in the know, please enlighten, as that link to evo piccys doesn't really show much actual detail. only the surface of the hole / slot.
Is it something I could machine ? (spare housing assumed)
does the inlet pipe fit over the whole lot including the holes / slots?
If so how does it attatch on that evo pic ? it looks from here that the clamp area for the inlet pipe is inside the area of the vents ?
Andy
Is it something I could machine ? (spare housing assumed)
does the inlet pipe fit over the whole lot including the holes / slots?
If so how does it attatch on that evo pic ? it looks from here that the clamp area for the inlet pipe is inside the area of the vents ?
Andy
18 December 2003, 09:50 PM
#147
Subaru Tuning Specialist
Join Date: Jun 2002
Location: 7.74 @179 mph 1/4 mile - road legal
Posts: 6,654
Likes: 0
Received 1 Like
on
1 Post
It's much easier to start with the TD06 75mm inlet cover. Then it just needs machining, no sleeving, or welding.
Thinking about it, the smaller cover doesn't have the blades far enough out to be able to cut in from the outside to create the slots.
here is what a ported shroud should look like
some of you scooby guys really crack me up , most of you just love an excuse to show that you are in the know...... it is not a secret mod as a lot of people may want you to belive
Alan G, John B, John H, Harvey, Jonny Gav, SG72 - You have seen my turbo have you not ?
Alan - I'm free 1st - 7th Jan if you want to try this compressor casing.... or are you on hol ?
Andy
(in the know) [Edited by Andy.F - 12/18/2003 9:52:14 PM]