Turbo AR's Q&A..... - Ford Focus Forum, Ford Focus ST Forum
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Ford Focus Forum, Ford Focus ST Forum > Ford Focus Tech Discussions > General Forced Induction

General Forced Induction The place to chat about turbochargers, superchargers nitrous systems and custom engine fabrications.

Search This Forum | Image Search | Advanced Search    
Ford Focus Tire & Wheels FocusFanatics Merchandise

Reply
 
Thread Tools Display Modes
Old 12-25-2008, 12:43 PM   #1
03OrangeSVT
LETS TURN DIRT!!!!
 
03OrangeSVT's Avatar
 
Join Date: Feb 2005
Fan#: 19169
Location: Piketon, OH
What I Drive: MINI Cooper S TURBO

Posts: 11,906
FF Reputation: 152 03OrangeSVT Excellent Standing Member 03OrangeSVT Excellent Standing Member
Buy-Sell-Trade Rating: (5)
Exclamation Turbo AR's Q&A.....

I've been noticing when people ask about what size turbo's they need they alway ask "do I need a .50 ar or 64ar" and so on....

The AR is nothing more than the size of the exhaust houing.... not the power capabilities of the turbo itself.

When looking at how much power you want to make you need to look at PPM (air in pounds per minute of flow)... a really neat trick I've picked up on is 1 ppm is good for around 10hp (rating wise)

Example a a turbo that flows 35 PPM is capable of 350hp ... according to how they rate turbos.

After you figure out how much FLOW you need then you need to look at AR... a smaller ar (example a .50ar) will spool faster than say a larger (.86ar) BUT usually the smaller ar will peak then start to fall off powerwise, the larger ar may take a little longer to spool but it will make more top end power. Also you need to remember that the ar is also a restriction... all of your exhaust has to flow through it.


* This is just some basic info you need to think about when looking for a turbo... there are also many other factors that come into play like the ratio between the hot side wheel and the cold side wheel.*

Any questions I can help you guys with???


__________________
[B]1951 McCormick FARMALL M
2007 MINI Cooper S Turbo... new project car
1998 Chevy 3500 Ext cab, long bed, 4x4, duelly, turbo diesel
2004 Harley V-Rod.... sex on wheels
2011 Harley Electra Glide Ultra Limited
[/b]
03OrangeSVT is offline  
    Reply With Quote
Old 12-25-2008, 12:54 PM   #2
cwatson411
Focus Addict
 
cwatson411's Avatar
 
Join Date: Nov 2008
Fan#: 60321
Location: Kingston, TN
What I Drive: '03 Torador Red ZTS

Posts: 1,102
FF Reputation: 6 cwatson411 Good Standing Member
Buy-Sell-Trade Rating: (-1)
so what turbos would flow about 25-30PPM?

also, do you think that a turbo with those^ flow #s would spool relativaly early and not fall off at top end to much with an ar of about .50?
__________________
-Cory

Snoochie Boochies
cwatson411 is offline  
    Reply With Quote
Old 12-25-2008, 12:59 PM   #3
03OrangeSVT
LETS TURN DIRT!!!!
 
03OrangeSVT's Avatar
 
Join Date: Feb 2005
Fan#: 19169
Location: Piketon, OH
What I Drive: MINI Cooper S TURBO

Posts: 11,906
FF Reputation: 152 03OrangeSVT Excellent Standing Member 03OrangeSVT Excellent Standing Member
Buy-Sell-Trade Rating: (5)
I would look at turbos like the T3 super 60 or GT28r (depending on your choice of brands)

Personally I would go with a .64ar or maybe bigger... I've seen many dynos of the smaller ar and they all do the same.... they hit peak tq then immediatly start to fall off.

With a bigger ar you can hold the peak longer and when it does fall off it tends to do so at a slower rate.
__________________
[B]1951 McCormick FARMALL M
2007 MINI Cooper S Turbo... new project car
1998 Chevy 3500 Ext cab, long bed, 4x4, duelly, turbo diesel
2004 Harley V-Rod.... sex on wheels
2011 Harley Electra Glide Ultra Limited
[/b]
03OrangeSVT is offline  
    Reply With Quote
Old 12-25-2008, 03:50 PM   #4
cwatson411
Focus Addict
 
cwatson411's Avatar
 
Join Date: Nov 2008
Fan#: 60321
Location: Kingston, TN
What I Drive: '03 Torador Red ZTS

Posts: 1,102
FF Reputation: 6 cwatson411 Good Standing Member
Buy-Sell-Trade Rating: (-1)
cool, im just looking for a wider powerband

and it looks like thats the way to go
__________________
-Cory

Snoochie Boochies
cwatson411 is offline  
    Reply With Quote
Old 07-28-2009, 08:23 PM   #5
jerbear
Focus Enthusiast
 
jerbear's Avatar
 
Join Date: Dec 2006
Fan#: 42414
Location: Flor07, United States
What I Drive: BBK svt foci

Posts: 93
FF Reputation: 1 jerbear Good Standing Member
Buy-Sell-Trade Rating: (0)
What comes in Tom's DIY kit?
jerbear is offline  
    Reply With Quote
Old 07-28-2009, 09:27 PM   #6
1turbofocus
FF Affiliate
 
1turbofocus's Avatar
 
Join Date: Oct 2003
Fan#: 1123
Location: Belmont, NC
What I Drive: 2000 ZX3 / 2002 SVT Turbocharged

Posts: 21,778
FF Reputation: 153 1turbofocus Excellent Standing Member 1turbofocus Excellent Standing Member
Buy-Sell-Trade Rating: (28)
John your opening a whole can or worms you dont really want to open

There is a reason that I dont give out many specs and help people choose turbos , It took me a long time to stop doing it , you really done want to go there

Tom
__________________
Focus-Power: Your #1 Source for Ford Focus Speed, Tuning & Performance!

Customer Support
AIM: hpdyno
Email: hpdyno@aol.com
Phone: 704-249-3745
Site: focus-power.com

Elder 1turbofocus
1turbofocus is offline  
    Reply With Quote
Old 07-29-2009, 05:28 AM   #7
sporadic
Focus Addict
 
sporadic's Avatar
 
Join Date: Sep 2004
Fan#: 12724
Location: Fairmont, WV
What I Drive: 06 Sonic Blue ZX5 SES turbo

Posts: 1,263
FF Reputation: 61 sporadic Excellent Standing Member
Buy-Sell-Trade Rating: (12)
Quote:
Originally Posted by 1turbofocus View Post
John your opening a whole can or worms you dont really want to open

There is a reason that I dont give out many specs and help people choose turbos , It took me a long time to stop doing it , you really done want to go there

Tom
That's what this forum is for is it not?
__________________
2006 sonic blue zx5 GT2871r turbo.
sporadic is offline  
    Reply With Quote
Old 07-29-2009, 06:56 AM   #8
1turbofocus
FF Affiliate
 
1turbofocus's Avatar
 
Join Date: Oct 2003
Fan#: 1123
Location: Belmont, NC
What I Drive: 2000 ZX3 / 2002 SVT Turbocharged

Posts: 21,778
FF Reputation: 153 1turbofocus Excellent Standing Member 1turbofocus Excellent Standing Member
Buy-Sell-Trade Rating: (28)
No

Tom
__________________
Focus-Power: Your #1 Source for Ford Focus Speed, Tuning & Performance!

Customer Support
AIM: hpdyno
Email: hpdyno@aol.com
Phone: 704-249-3745
Site: focus-power.com

Elder 1turbofocus
1turbofocus is offline  
    Reply With Quote
Old 07-29-2009, 07:36 AM   #9
kamilk
Focus Enthusiast
 
Join Date: Oct 2006
Fan#: 40422
Location: hamilton, ont, Canada
What I Drive: boosted 2001 zx3

Posts: 80
FF Reputation: 2 kamilk Good Standing Member
Buy-Sell-Trade Rating: (0)
Quote:
Originally Posted by 1turbofocus View Post
No

Tom
WTF are you serious. tom i respect you but god damn whats the point of a forum if not to share information, help each other, and educate one another. thats how you build a community.

yea your going to get some annoying people that dont know what even a wastegate does but for the majority of people that want to learn the information should be accessable. teaching the focus community to inspire creativity and new ways of doing things.

damn your a tyrant.
__________________
boost junkie
kamilk is offline  
    Reply With Quote
Old 07-29-2009, 09:17 AM   #10
1turbofocus
FF Affiliate
 
1turbofocus's Avatar
 
Join Date: Oct 2003
Fan#: 1123
Location: Belmont, NC
What I Drive: 2000 ZX3 / 2002 SVT Turbocharged

Posts: 21,778
FF Reputation: 153 1turbofocus Excellent Standing Member 1turbofocus Excellent Standing Member
Buy-Sell-Trade Rating: (28)
Thats all well and good , To say a t3 s60 stg3 turbo is what your need for your Focus isnt something that can come from reading a forum , The Zetec isnt like most engines in how it responds to boost

Teaching people what the diff numbers are and PPM is all well and good , but what if those # dont apply to the Focus they way they do other 4 cyl engines , so you learn a lot of this stuff , buy a turbo to find out it wont make the power you wanted , many will come back here and , well you guys said if this and this was here that this turbo would make the power I wanted

There may be 5 people on here that can read a turbo graph and maybe 2-3 that actually understand what there reading

Then you get into custom turbos that with the Zetec throw a lot of sence out the window , picking a turbo isnt something your going to learn from a forum it is like tuning and something that takes years of building boosted engines on a dyno to learn what the numbers mean and do

Then you get into HP ratings and those are commercial HP ratings # and have little to do with the actual HP the turbo will make from one build to another let alone one engine to another

Tom
__________________
Focus-Power: Your #1 Source for Ford Focus Speed, Tuning & Performance!

Customer Support
AIM: hpdyno
Email: hpdyno@aol.com
Phone: 704-249-3745
Site: focus-power.com

Elder 1turbofocus
1turbofocus is offline  
    Reply With Quote
Reply

Bookmarks & Social Networks
-->
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Boosted Crew Updated ZX3_2NV General Forced Induction 66 01-26-2009 11:22 AM
For Sale: Garrett GT3071R Turbo pocus02x3 Archive 19 01-24-2009 05:05 PM
Fs Zetec Turbo Kit Boostedfoci88 Archive 58 08-22-2007 10:17 AM
Turbo noob's q 2Slow2Race General Forced Induction 6 05-09-2007 01:30 AM
Turbo Questions - maybe a sticky eventually? petik General Forced Induction 5 10-11-2004 02:17 PM


All times are GMT -5. The time now is 01:59 AM.


Copyright 2002-2014 FocusFanatics.com. All Rights Reserved : Terms of Use : Privacy Policy : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Acura TLX or Fiesta ST. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area.