TeamSwift

Home of the Suzuki mini-compacts ! Your Home for all things Suzuki Swift, Geo Metro, Holden Barina, Chevy Sprint, Pontiac Firefly, and Suzuki Cultus. TeamSwift is a technical performance oriented community!
It is currently Sun Oct 22, 2017 12:59 am

Underbody braces, turbos and more!

All times are UTC - 5 hours




Post new topic Reply to topic  [ 11 posts ] 
Author Message
 Post subject: Advice on ITB setup
PostPosted: Wed Aug 08, 2007 7:29 pm 
Offline

Joined: Tue Nov 07, 2006 5:28 am
Posts: 14
Location: Arnhem
Hi guys, I wanted to make a new setup for my car.

- ITB's from a suzuki GSXR 750/1000
- Megasquirt Engine Management
- 2 Inch pressure bent exhaust system
- Magneflow Muffler

I just ran a 15,824 sec on the 1/4 mile with minor mods

- K&N filter
- Magnecor 8,5 mm wires
- Msd blaster 2 Coil
- Single Underdrivepulley

I was wondering what u guys reccomend on the ITB setup and wanted to drop the 1/4 mile time, someone said I could maybe run high 14's, what do you guys think?

_________________
15,824 sec at 86.2 MPH With only minor mods, K&N Filter, Underdrive Pulley, 8,5 mm Magnecor Wires and MSD 2 Blaster Coil


Top
 Profile  
 
 Post subject: Re: Advice on ITB setup
PostPosted: Wed Aug 22, 2007 4:50 pm 
Offline
User avatar

Joined: Mon Aug 28, 2006 5:31 am
Posts: 29
Location: Haarlem @ the Netherlands
suzuki91 wrote:
Hi guys, I wanted to make a new setup for my car.

- ITB's from a suzuki GSXR 750/1000
- Megasquirt Engine Management
- 2 Inch pressure bent exhaust system
- Magneflow Muffler

I just ran a 15,824 sec on the 1/4 mile with minor mods

- K&N filter
- Magnecor 8,5 mm wires
- Msd blaster 2 Coil
- Single Underdrivepulley

I was wondering what u guys reccomend on the ITB setup and wanted to drop the 1/4 mile time, someone said I could maybe run high 14's, what do you guys think?


Hi

What do you want exactly on the ITB's??
A filter or so?

Anyway,why take the ITB's??
Just mount some faster but not too wild cams,wich give you more NM and install a computer wich you can program (or chiptune the orginal) and you have more HP and more NM,and its cheaper. ;)

_________________
Swift GTi running @ 0.8bar
http://www.cardomain.com/ride/311033

http://www.suzimaniacs.com/phpBB2/viewt ... sc&start=0


Top
 Profile  
 
 Post subject:
PostPosted: Thu Aug 23, 2007 4:55 am 
Offline
User avatar

Joined: Fri Nov 28, 2003 4:21 pm
Posts: 593
Location: Durham, UK
Hi,

I have read in some magazine that by fitting bike quad-carbs.
It will increase performance dramatically.
They even commented that by doing so, it is like fitting aftermarket ECU without a laptop.

I think it will be same for ITBs.
It will flow more air than single TB.
If you get right setup, it will come with a throttle position sensor.
It will sticll cost a lot of money to set up thought, IMO.

I'm still building my R1 carb setup and hopefull when I finish my house, I can start again.

I think Oz had his mk1 with R1 carbs with camshaft..etc to produce 30% more power from stock.

So, it must works well!

cheers

Atchi


Top
 Profile  
 
 Post subject:
PostPosted: Fri Aug 24, 2007 6:32 am 
Offline
User avatar

Joined: Mon Aug 28, 2006 5:31 am
Posts: 29
Location: Haarlem @ the Netherlands
Quote:
think Oz had his mk1 with R1 carbs with camshaft..etc to produce 30% more power from stock.


True,but thats not only becouse of the ITB's. :wink:
The wilder/faster cams can give you allready a 20/25hp improvement.
Depend on how wild they are offcourse.

I had no HP improvement with the quad carbs.
So i am not that positive of mounting ITB's for HP improvement.

_________________
Swift GTi running @ 0.8bar
http://www.cardomain.com/ride/311033

http://www.suzimaniacs.com/phpBB2/viewt ... sc&start=0


Top
 Profile  
 
 Post subject:
PostPosted: Sun Aug 26, 2007 5:19 pm 
Offline
User avatar

Joined: Wed Jul 19, 2006 11:43 am
Posts: 227
Location: Kingston
can the Levin ITB's work on the GTi head? i've heard persons say it but i've never gotten the full details....

_________________
Image
The Greatest Drivers, The Greatest Machines, The Greatest Glory....

SUZUKI ... The Joy of Driving, The Thrill of Victory


Top
 Profile  
 
 Post subject:
PostPosted: Mon Aug 27, 2007 11:20 pm 
Offline

Joined: Fri Dec 09, 2005 7:08 am
Posts: 8
Location: Adelaide
Stanno wrote:
can the Levin ITB's work on the GTi head? i've heard persons say it but i've never gotten the full details....


They will work, but you will need to modify them quite a bit to get them to fit. The spacings are all wrong and would need to be cut and shut to make fit.


Top
 Profile  
 
 Post subject:
PostPosted: Wed Mar 19, 2008 6:33 pm 
Offline
User avatar

Joined: Thu Apr 15, 2004 12:27 am
Posts: 3052
Location: Aruba
moylee19 wrote:
Stanno wrote:
can the Levin ITB's work on the GTi head? i've heard persons say it but i've never gotten the full details....


They will work, but you will need to modify them quite a bit to get them to fit. The spacings are all wrong and would need to be cut and shut to make fit.


Might come in handy. (copy paste in address bar)

http://www.my-acoustic.com/Car/vacuum/4 ... vacuum.htm

_________________
1991-GTi: JE 75mm 11:1 pistons,Ported head, Single UD pulley (OCC),Sandros chip,Aluminium flywheel,3tech 222/365 cams, Cultus headers,Cultus IM,50mm tb,Crane cams adjustable cam gears,Apex suspension, 4.39fd GB.
1989-GTi: 3Tech 210/340 Cams,Cultus IM, B&G springs, TD04L turbo, Apexi SAFC, Suzukird UD pulley, Circuitse7en dual boost controller, AEM wideband, AEM water / meth injection kit, HKS bov.
2001-Altezza AS200: Stock.-sold
2003-EVO7 GT-A
Aruba "one happy island".


Top
 Profile  
 
 Post subject:
PostPosted: Thu Mar 20, 2008 2:52 am 
Offline
Senior Member
User avatar

Joined: Thu Feb 12, 2004 11:30 pm
Posts: 1706
Location: Rivendell
The levin itbs and manifold are a very close fit (if it is the AE101 inlet manifold) I fashioned a 25 mm plate of alloy into an adaptor, it took a little of aligning but it wasn;t an huge engineering job.

_________________
Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car.HP is how fast you hit the wall, torque is how much you push the wall out.


Top
 Profile  
 
 Post subject:
PostPosted: Thu Mar 20, 2008 3:16 am 
Offline
Teamswift Racer
User avatar

Joined: Fri Apr 02, 2004 5:56 am
Posts: 2328
Location: Christchurch NZ, quake capital
Dr.Insane wrote:
Quote:
think Oz had his mk1 with R1 carbs with camshaft..etc to produce 30% more power from stock.


True,but thats not only becouse of the ITB's. :wink:
The wilder/faster cams can give you allready a 20/25hp improvement.
Depend on how wild they are offcourse.

I had no HP improvement with the quad carbs.
So i am not that positive of mounting ITB's for HP improvement.


ITB's by themselves will make a small difference, well in my case they did, but when used WITH more aggressive cams will make a much bigger difference than cams alone, plus they sound awesome :yeahyeah not sure I would use the Levin ITB's as the smallest ones are 42mm which is a little too big for a little engine like ours, better throttle response by using something smaller like 38mm ITBs off gsxr's etc.


Top
 Profile  
 
 Post subject: Re:
PostPosted: Fri Mar 21, 2008 10:42 pm 
Offline
User avatar

Joined: Wed Jul 19, 2006 11:43 am
Posts: 227
Location: Kingston
how difficult is it to fabricate itb's usuing gsx-r carbs ?

_________________
Image
The Greatest Drivers, The Greatest Machines, The Greatest Glory....

SUZUKI ... The Joy of Driving, The Thrill of Victory


Top
 Profile  
 
 Post subject: Re: Advice on ITB setup
PostPosted: Sun Mar 23, 2008 2:42 am 
Offline
Teamswift Racer
User avatar

Joined: Fri Apr 02, 2004 5:56 am
Posts: 2328
Location: Christchurch NZ, quake capital
GSXR throttle bodies are the easiest to use, I'm using CBR900 ITB's and will probably make another set using gsxr itb's as it's easier to mount a plenum on using silicon couplers, also the gsxr itbs have the cable pulley wheel thingy on the end so you can replace it with your swift one to get the correct leverage ratio on your pedal, unlike my cbr itb's which I had to shorten the pedal to change the cable pull ratio.

The manifold it self requires a bit of work, you will need either 10 or 12mm plate alloy, either get it water cut or use a jigsaw for the outside and then die grind the port, you will need alloy tubing with an ID of 34mm and some mandrels to shape the runners as it goes from round 38/40mm ID on the itb's to 34mm oval ports on the flange/head, carefully crushing one end of the runner in a vice is ok for the flange, using a mandrel you will need to flare the other end of the runner to match the throttle body, then you can use silicon couplers and hose clamps to fit the itb's to the manifold.
When you tig the runners to the flange you will find the heat distorts the flange, it's easy enough to straighten it up using a hammer and a vice, 10mm plate warps quite a lot but is much easier to cut than 12mm.

There is a how -to on redlinegti by sk4wd on fitting gsxr itb's to a swift, it's worth a look although the only thing I suggest is make sure your plenum doesn't have any flat sides.

If it sounds too hard then I do have a very good fabricator :wink:


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 11 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: Yahoo [Bot] and 1 guest


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

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group