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 Mon Nov 20, 2017 1:38 am

Underbody braces, turbos and more!

All times are UTC - 5 hours




Post new topic Reply to topic  [ 56 posts ]  Go to page Previous  1, 2, 3
Author Message
 Post subject:
PostPosted: Sat May 19, 2007 10:36 pm 
Offline

Joined: Thu Aug 23, 2001 5:35 pm
Posts: 870
Location: SINGAPORE
the 4agze rods and 75mm vitara pistons sounds like an interesting option without major modifications to the piston required. typically you use the 75mm vitara pistons to lower compression for a TC setup, but with a NA setup the 2mm longer 4agze rods and 75mm vitara pistons combo with the right head gasket thickness (or stock vitara gasket) could bring the compression back up on a NA setup.

really like the idea of having more torque. anyone has more ideas on this?

_________________
Lee, Singapore


Top
 Profile  
 
 Post subject:
PostPosted: Sun May 20, 2007 3:35 am 
Offline
Teamswift Racer
User avatar

Joined: Fri Apr 02, 2004 5:56 am
Posts: 2329
Location: Christchurch NZ, quake capital
Hmmm, the vitara pistons are lower compression because they have quite a deep dish compared to the gti pistons, 2mm is a lot, I suspect you would have to machine the top's off the vitara piston to prevent it from hitting the valves using 4agze rods.


Top
 Profile  
 
 Post subject:
PostPosted: Sun May 20, 2007 7:48 am 
Offline

Joined: Thu Aug 23, 2001 5:35 pm
Posts: 870
Location: SINGAPORE
so it's a viable option to use the 4agze rods together with the vitara pistons. 8)

the raised edge on the vitara pistons is where material can be taken off.

_________________
Lee, Singapore


Top
 Profile  
 
 Post subject:
PostPosted: Sun May 20, 2007 9:07 am 
Offline
User avatar

Joined: Mon May 27, 2002 11:47 pm
Posts: 1974
Location: San Juan, Argentina
I did the maths. Vitara pistons + these rods will lead to 8.9:1. Machining the tops will lead to even lower values.

_________________
Megasquirt tutorial --- http://caaarlo.50megs.com


Top
 Profile  
 
 Post subject:
PostPosted: Sun May 20, 2007 10:21 am 
Offline

Joined: Thu Aug 23, 2001 5:35 pm
Posts: 870
Location: SINGAPORE
Seb,

Thanks for the calculation. From your experience would there be enough clearance between the pistons and the valves? Sounds like a much better option for TC engine than a NA engine.

_________________
Lee, Singapore


Top
 Profile  
 
 Post subject:
PostPosted: Sun May 20, 2007 4:55 pm 
Offline
User avatar

Joined: Mon May 27, 2002 11:47 pm
Posts: 1974
Location: San Juan, Argentina
Yes, I guess the pistons will now protrude, and touch the head. Machining the tops becomes mandatory. I don't think it's a good option.

_________________
Megasquirt tutorial --- http://caaarlo.50megs.com


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 56 posts ]  Go to page Previous  1, 2, 3

All times are UTC - 5 hours


Who is online

Users browsing this forum: Google [Bot] and 3 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

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