Fordmods Logo

TT'ing, do they have to be the same turbo? 

 

Page 1 of 2 [ 21 posts ] Go to page 1, 2  Next

 
 Post subject: TT'ing, do they have to be the same turbo?
Posted: Sun May 21, 2006 11:28 pm 
Getting Side Ways
Offline
User avatar

Posts: 1549

Joined: 27th Apr 2005

Gallery: 1 images

Ride: AU Fairmont Ghia

Location: Perth
WA, Australia

I have sold my turbo and am now thinking about going TT. The manifold will be cylinders 1-2-3 into 1 and cylinders 456 into 1. Obviously this will not be a staged setup, so my question is how important is it that the turbos are the same? It would be cheaper if i could get two similar turbos instead of two of the same but will this be detrimental somehow? I'm thinking that if they are too different then the cylinders will have different filling/scavenging characteristics causing tuning problems.
I wont be running a lot of boost just looking for an efficient system with early response
Top
 Profile  
 
 
Posted: Sun May 21, 2006 11:34 pm 
Getting Side Ways
Offline
User avatar

Age: 31

Posts: 11103

Joined: 15th Nov 2004

Ride: AU III XR8 Pursuit 250 ute

Location: Hobart
TAS, Australia

i don't think so. i'm pretty sure in one of the toyota supras they have two diffetrent turbos so one sppools up first.

 

_________________

Heaps of performance EF/L parts for sale, including supercharged VCT motor!

2002 Ford AU Series III Falcon XR8 Pursuit 250 ute - 5.6L of V8 Windsor!

Top
 Profile  
 
 
Posted: Sun May 21, 2006 11:39 pm 
Getting Side Ways
Offline
User avatar

Posts: 1549

Joined: 27th Apr 2005

Gallery: 1 images

Ride: AU Fairmont Ghia

Location: Perth
WA, Australia

twr7cx wrote:
i don't think so. i'm pretty sure in one of the toyota supras they have two diffetrent turbos so one sppools up first.



yer but that is a staged system, sharing a manifold with a valve in between
Top
 Profile  
 
 
Posted: Mon May 22, 2006 12:09 am 
Getting Side Ways
Offline
User avatar

Age: 64

Posts: 3552

Joined: 7th Nov 2004

Gallery: 4 images

Power: 482 rwkw

Location: Penrith
NSW, Australia

Unless you realy know how to set up manifold you'll run into surge issues it may blow back through the weaker turbo..

 

_________________

As in ZOOM 126 edition
331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

Top
 Profile  
 
 
Posted: Mon May 22, 2006 12:30 am 
Getting Side Ways
Offline
User avatar

Posts: 1549

Joined: 27th Apr 2005

Gallery: 1 images

Ride: AU Fairmont Ghia

Location: Perth
WA, Australia

EBXR8380 wrote:
Unless you realy know how to set up manifold you'll run into surge issues it may blow back through the weaker turbo..


even if they are two different manifolds not sharing gas flow? also the turbos wont vary much, they will both be off engines 1.8L-2L
Top
 Profile  
 
 
Posted: Mon May 22, 2006 12:55 am 
Getting Side Ways
Offline
User avatar

Age: 31

Posts: 4323

Joined: 17th Jan 2006

Ride: Soarer 2.5GT-T

Location: Cranbourne
VIC, Australia

EBXR8380 wrote:
Unless you realy know how to set up manifold you'll run into surge issues it may blow back through the weaker turbo..


Beat me to it.
If it were staged it wouldn't matter, but the way you want to do it you'll need the same turbos.
Top
 Profile  
 
 
Posted: Mon May 22, 2006 12:58 am 
Getting Side Ways
Offline
User avatar

Posts: 1549

Joined: 27th Apr 2005

Gallery: 1 images

Ride: AU Fairmont Ghia

Location: Perth
WA, Australia

soulfire wrote:
EBXR8380 wrote:
Unless you realy know how to set up manifold you'll run into surge issues it may blow back through the weaker turbo..


Beat me to it.
If it were staged it wouldn't matter, but the way you want to do it you'll need the same turbos.

do you mean blow back throught the compressor? if i set up a staged system would i need a gas control valve?
Top
 Profile  
 
 
Posted: Mon May 22, 2006 1:01 am 
Getting Side Ways
Offline

Age: 33

Posts: 868

Joined: 23rd Sep 2005

Ride: eb falcon

Location: kadina
SA, Australia

i think he's refering to the turbo compressor outlets, saying if one boosts better than the other, and the other cant cope, you will get air wanting to surge back through the inlet of the weaker one

 

_________________

EB 4L, 8.4:1, R154, GT4202r, 4in exhaust, Greenslade Engineering exhaust manifold, plenum chamber, 90mm throttle, Garrett W2A cooler, Surecam custom, autronic SM4, Bosch 120lb, Crane HI-6, LX-92, LM-1, Turbosmart Reg, 2x bosch 044, turbosmart 48 gate. 470kw+ @ 18PSI

Top
 Profile  
 
 
Posted: Mon May 22, 2006 10:29 am 
Getting Side Ways
Offline
User avatar

Posts: 1549

Joined: 27th Apr 2005

Gallery: 1 images

Ride: AU Fairmont Ghia

Location: Perth
WA, Australia

i see, i would have thought that would be more of a problem in a staged system
Top
 Profile  
 
 
Posted: Mon May 22, 2006 5:53 pm 
Getting Side Ways
Offline
User avatar

Posts: 1960

Joined: 6th Nov 2004

Gallery: 22 images

Power: 315 rwkw

Location: Under the flight path of incoming packpackers
NSW, Australia

Its best to use identicle turbos as you'll run into all sorts of tuning/setting up issues... one may come boost earlier, one may cause more gas restriction through the head... there's so many variables between turbos that it'll just be a waste of time.

Why did you decide TT? Is it a $$ thing or just for bragging rights??
Top
 Profile  
 
 
Posted: Mon May 22, 2006 6:40 pm 
Getting Side Ways
Offline

Posts: 1687

Joined: 5th Nov 2004

Gallery: 5 images

Ride: 1994 ED Ricer

Location: Perth
WA, Australia

CHEF wrote:
Why did you decide TT? Is it a $$ thing or just for bragging rights??

probably the fact there is no TT e-series in perth so he wants to be differnet?
Top
 Profile  
 
 
Posted: Mon May 22, 2006 8:23 pm 
Getting Side Ways
Offline
User avatar

Posts: 1549

Joined: 27th Apr 2005

Gallery: 1 images

Ride: AU Fairmont Ghia

Location: Perth
WA, Australia

CHEF wrote:
Its best to use identicle turbos as you'll run into all sorts of tuning/setting up issues... one may come boost earlier, one may cause more gas restriction through the head... there's so many variables between turbos that it'll just be a waste of time.

Why did you decide TT? Is it a $$ thing or just for bragging rights??


well most people consider a big single to be the best path for big power so its not a bragging thing. Im just in the market to get another turbo as i sold the old one. Dad who is fabricating the manifold would prefer to make up two smaller manifolds than a big equal length one and im not even considering log style manifolds at this stage.
$$ wise you can often pick up smaller turbos off 1.8L engines cheap because they arent and upgrade for anyone where if you go bigger suddenly the price jumps heaps. I will just have to be patient and buy two of the same typre of turbos. probably two off a forrester as these are cheap, reliable and fairly readily available.
Also two small turbos will fit under a modified heat sheild where as a bigger turbo on equal length manifold wont. I want a totally factory look even though it will be engineered. All pipes black ect.
Top
 Profile  
 
 
Posted: Tue May 23, 2006 9:43 pm 
Getting Side Ways
Offline
User avatar

Age: 64

Posts: 3552

Joined: 7th Nov 2004

Gallery: 4 images

Power: 482 rwkw

Location: Penrith
NSW, Australia

Two T28's will be fine..

 

_________________

As in ZOOM 126 edition
331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

Top
 Profile  
 
 
Posted: Wed May 24, 2006 6:49 pm 
Getting Side Ways
Offline
User avatar

Posts: 1960

Joined: 6th Nov 2004

Gallery: 22 images

Power: 315 rwkw

Location: Under the flight path of incoming packpackers
NSW, Australia

One thing to think about when buying used turbos is there 's a big chance they or it will need a rebuild. A rebuild for most turbos is a similar cost, so one big turbo rebuilt will be cheaper than 2 rebuilt turbos.
Top
 Profile  
 
 
Posted: Wed May 24, 2006 8:02 pm 
Getting Side Ways
Offline
User avatar

Posts: 1549

Joined: 27th Apr 2005

Gallery: 1 images

Ride: AU Fairmont Ghia

Location: Perth
WA, Australia

CHEF wrote:
One thing to think about when buying used turbos is there 's a big chance they or it will need a rebuild. A rebuild for most turbos is a similar cost, so one big turbo rebuilt will be cheaper than 2 rebuilt turbos.


I realise this but thanks anyway, whats involved in re-building a turbo? approx cost?
Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 2  [ 21 posts ]  Go to page 1, 2  Next

Who is online

Users browsing this forum: No registered users and 10 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Tue Dec 12, 2017 10:04 pm All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names