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External Wastegates VS Internal Wastegates 

 

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 Post subject: External Wastegates VS Internal Wastegates
Posted: Sat Apr 02, 2011 12:54 am 
Oompa Loompa
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Age: 31

Posts: 34

Joined: 13th Feb 2011

Ride: 1994 EF XR8

Location: Rockhampton
QLD, Australia

Hi everyone just wondering whats better, Internal Or External wastegates?

Im building a 347 stroker twin turbo for my xr8 and im still deciding what turbos to use.
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 Post subject: Re: External Wastegates VS Internal Wastegates
Posted: Sat Apr 02, 2011 9:28 pm 
Getting Side Ways
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Age: 64

Posts: 3552

Joined: 7th Nov 2004

Gallery: 4 images

Power: 482 rwkw

Location: Penrith
NSW, Australia

With TWINS an internal on each turbine will work fine..
62mm 76 trim .63 AR Precision turbo's..T3/4's...
More compact also..
Use nice big dump pipe to assist in good turbine / wastegate flow..
I can run as low as 8lb all the way to 18Lb with EBC with no issues..
270 rwkw to 480 rwkw with a turn of a dashpot inside car..

 

_________________

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.....

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 Post subject: Re: External Wastegates VS Internal Wastegates
Posted: Sun Apr 03, 2011 12:45 am 
Oompa Loompa
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Age: 31

Posts: 34

Joined: 13th Feb 2011

Ride: 1994 EF XR8

Location: Rockhampton
QLD, Australia

How are the SC61 turbos that you have on your car?
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 Post subject: Re: External Wastegates VS Internal Wastegates
Posted: Sun Apr 03, 2011 1:02 am 
Oompa Loompa
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Age: 31

Posts: 34

Joined: 13th Feb 2011

Ride: 1994 EF XR8

Location: Rockhampton
QLD, Australia

I have been looking at these turbos

http://www.pcpa.com.au/index.php?main_p ... 24e93c8e19

im making the manifolds myself and hopefully i can con my boilmaker mate into helping aswell so it wont be too much drama. I had a XR6 turbo and i had the boost set at 10psi but the boost gauge use to read at 16 psi at full boost.
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 Post subject: Re: External Wastegates VS Internal Wastegates
Posted: Sun Apr 03, 2011 10:07 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

xr8boi wrote:
How are the SC61 turbos that you have on your car?


GREAT .. Mine are speced with ballbearing centre..
On a std block I suggest smaller trim on turbine wheel to bring on boost sooner..

A "single" Master Power T70 is alittle big on 5.0 engines...
But they work very well !!! For a budget 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  
 
 
 Post subject: Re: External Wastegates VS Internal Wastegates
Posted: Sun Apr 03, 2011 10:27 pm 
Oompa Loompa
Offline

Age: 31

Posts: 34

Joined: 13th Feb 2011

Ride: 1994 EF XR8

Location: Rockhampton
QLD, Australia

Oh yeah im getting a dart block stroker from ford strokers and afr heads. Hopefully i can get some good power out of it. With this setup what turbos would you suggest?
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 Post subject: Re: External Wastegates VS Internal Wastegates
Posted: Tue Apr 05, 2011 12:32 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

$$$ GT4202 would be my choice..

A 80mm S480 Borg warner 1.10 A.R..

Depending on engine size...

 

_________________

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  
 
 
 Post subject: Re: External Wastegates VS Internal Wastegates
Posted: Tue Apr 05, 2011 12:32 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

Twins ?? Two GT3540's or T04Z with external gates..
Two Precision SC62 ??

 

_________________

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  
 
 
 Post subject: Re: External Wastegates VS Internal Wastegates
Posted: Tue Apr 05, 2011 8:10 am 
Oompa Loompa
Offline

Age: 31

Posts: 34

Joined: 13th Feb 2011

Ride: 1994 EF XR8

Location: Rockhampton
QLD, Australia

Is there an australian dealer for the Precision turbos or do i have to get them from america?
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 Post subject: Re: External Wastegates VS Internal Wastegates
Posted: Tue Apr 05, 2011 11:23 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

In nearly every quote I found I couldn't buy here even close to the price including freight..
I buy mine through VS racing ...

 

_________________

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  
 
 
 Post subject: Re: External Wastegates VS Internal Wastegates
Posted: Tue Apr 05, 2011 11:30 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

In nearly every quote I found I couldn't buy here even close to the price including freight..
I buy mine through VS racing ...

 

_________________

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  
 
 
 Post subject: Re: External Wastegates VS Internal Wastegates
Posted: Tue Apr 05, 2011 11:44 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

Vs Racing through this site...
http://www.theturboforums.com/smf/index ... c=148027.0
Strange they don't list too many Precision turbo's on there site..

 

_________________

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  
 
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